Sunday, March 31, 2019

Team PNG plant seedlings to mark Games countdown - The National

Team PNG plant seedlings to mark Games countdown  The National

By ISAAC LIRI Team Papua New Guinea began their 100-day countdown to the Pacific Games in Samoa by planting 100 mangrove seedlings at Gabagaba ...



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Bullet Train to ride, but govt includes riders - DNA India

Bullet Train to ride, but govt includes riders  DNA India

Bullet Train to ride, but govt includes riders - The project requires coastal clearance for a 21.91-km section of the 508.17-km length of the train's proposed route ...



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March 31, 2019 – PBS NewsHour Weekend full episode - PBS NewsHour

March 31, 2019 – PBS NewsHour Weekend full episode  PBS NewsHour

On this edition for Sunday, March 31, a Customs and Border Patrol agent staffing crunch intensifies as more migrants arrive, what the northward push of Florida's ...



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Climate change pushes Florida's mangroves north - PBS NewsHour

Climate change pushes Florida's mangroves north  PBS NewsHour

Mangroves are prevalent in tropical south Florida, but the plants have been moving farther north as climate change makes freezing weather less common.



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Kellogg WK Foundation Trust Decreased Its Holding in Kellogg Co (K) by $33.35 Million; Abraxas Pete (AXAS) Market Value Declined While Mangrove Partners Has Boosted Its Holding - The Moveefy

Kellogg WK Foundation Trust Decreased Its Holding in Kellogg Co (K) by $33.35 Million; Abraxas Pete (AXAS) Market Value Declined While Mangrove Partners Has Boosted Its Holding  The Moveefy

Kellogg W K Foundation Trust decreased its stake in Kellogg Co (K) by 0.89% based on its latest 2018Q4 regulatory filing with the SEC. Kellogg W K Foundation ...



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Shoker Investment Counsel Has Lifted Stake in Duke Energy New (DUK) as Stock Value Rose; Tesla (Put) (TSLA) Shareholder Mangrove Partners Trimmed Stake - The Hi New Ulm

Shoker Investment Counsel Has Lifted Stake in Duke Energy New (DUK) as Stock Value Rose; Tesla (Put) (TSLA) Shareholder Mangrove Partners Trimmed Stake  The Hi New Ulm

Shoker Investment Counsel Inc increased its stake in Duke Energy Corp New (DUK) by 94.57% based on its latest 2018Q4 regulatory filing with the SEC.



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As Tesla (Put) (TSLA) Market Value Declined, Holder Mangrove Partners Has Cut Position; Zoetis (ZTS) Holder Dsm Capital Partners Has Trimmed Position by $36.23 Million - The FinReviewer

As Tesla (Put) (TSLA) Market Value Declined, Holder Mangrove Partners Has Cut Position; Zoetis (ZTS) Holder Dsm Capital Partners Has Trimmed Position by $36.23 Million  The FinReviewer

Mangrove Partners decreased its stake in Tesla Inc (Put) (TSLA) by 65.16% based on its latest 2018Q4 regulatory filing with the SEC. Mangrove Partners sold ...



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Mangrove Partners Upped Its Virtus Invt Partners (VRTS) Position by $11.44 Million; Valuation Rose; Weibo (WB) Holder Dsm Capital Partners Has Increased Holding - The FinHeadLines

Mangrove Partners Upped Its Virtus Invt Partners (VRTS) Position by $11.44 Million; Valuation Rose; Weibo (WB) Holder Dsm Capital Partners Has Increased Holding  The FinHeadLines

Mangrove Partners increased its stake in Virtus Invt Partners Inc (VRTS) by 95.99% based on its latest 2018Q4 regulatory filing with the SEC. Mangrove Partners ...



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Mangrove Partners Has Upped Its Fly Leasing LTD (FLY) Position by $5.61 Million; Market Value Declined; Marsico Capital Management Has Decreased Take (TTWO) Stake by $1.22 Million - The FinExaminer

Mangrove Partners Has Upped Its Fly Leasing LTD (FLY) Position by $5.61 Million; Market Value Declined; Marsico Capital Management Has Decreased Take (TTWO) Stake by $1.22 Million  The FinExaminer

Mangrove Partners increased its stake in Fly Leasing Ltd (FLY) by 92.67% based on its latest 2018Q4 regulatory filing with the SEC. Mangrove Partners bought ...



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Why Flamingos Are Flocking To Mumbai - NPR Illinois | 91.9 UIS

Why Flamingos Are Flocking To Mumbai  NPR Illinois | 91.9 UIS

LULU GARCIA-NAVARRO, HOST: Every year about this time, flamingos flock to Mumbai to feed - 40- to 50,000 of them. RAHUL KHOT: Flamingo is, you know, ...



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What’s happening Sunday in the north valley - Chico Enterprise-Record

What’s happening Sunday in the north valley  Chico Enterprise-Record

Chico Seed Orchard: 7 a.m.-7 p.m. Pedestrian gate open seven days a week. Drive-thru gate closed weekends. One-mile self-guiding nature trail meanders ...



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Sunset Kayaking Adventure To Purple Island & Explore Mangrove - ILoveQatar.net

Sunset Kayaking Adventure To Purple Island & Explore Mangrove  ILoveQatar.net

Embrace Qatar's heritage by traveling the North Qatar, passing thru Al Khor and enjoying the eco-tourist activity to the Mangroves of Al Thahkira with kayaking ...



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NewsBytes 2019 #5 - U Mobile 5G initiative, Maxis eKelas, Connected Mangroves & Operation ShadowHammer - TechNave

NewsBytes 2019 #5 - U Mobile 5G initiative, Maxis eKelas, Connected Mangroves & Operation ShadowHammer  TechNave

What a hectic week, as we mentioned from our previous Newsbytes, there were several new smartphones launches over the past two weeks and the biggest ...



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Shareholders demand more information on 'rushed' TransAlta investment - The Globe and Mail

Shareholders demand more information on 'rushed' TransAlta investment  The Globe and Mail

The renewed opposition follows Monday's announcement by TransAlta that it had agreed to a $750-million investment from Brookfield Renewable Partners to ...



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Analysts See $1.73 EPS for BOK Financial (BOKF); Mangrove Partners Has Boosted Its Virtus Invt Partners (VRTS) Holding - The FinHeadLines

Analysts See $1.73 EPS for BOK Financial (BOKF); Mangrove Partners Has Boosted Its Virtus Invt Partners (VRTS) Holding  The FinHeadLines

Analysts expect BOK Financial Corporation (NASDAQ:BOKF) to report $1.73 EPS on April, 24.They anticipate $0.12 EPS change or 7.45% from last quarter's ...



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Mangrove and Bluescape Ask: Is the Brookfield Investment in the Best Interest of all TransAlta Shareholders? - PRNewswire

Mangrove and Bluescape Ask: Is the Brookfield Investment in the Best Interest of all TransAlta Shareholders?  PRNewswire

NEW YORK and DALLAS, March 29, 2019 /PRNewswire/ - A group led by Mangrove Partners ("Mangrove") and Bluescape Energy Partners ("Bluescape"), ...



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Indonesia church group tackles menace to mangroves - UCA News

Indonesia church group tackles menace to mangroves  UCA News

A coalition of church and environment advocacy groups have called for action to be taken against a salt company they accuse of illegally destroying more than ...



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Boys found after going missing in croc-infested mangroves - Yahoo7 News

Boys found after going missing in croc-infested mangroves  Yahoo7 News

Two boys who fled from police after allegedly stealing a car have been found after they were last seen in crocodile-infested mangroves in the early hours of ...



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Sabah villagers struggle to save dwindling mangroves - Free Malaysia Today

Sabah villagers struggle to save dwindling mangroves  Free Malaysia Today

KOTA KINABALU: At the Telaga river in Pitas, in the northern region of Sabah, villagers are fighting to save a once thriving mangrove forest which they say is ...



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Save Batu Maung mangrove swamp, govt urged - Nation - The Star Online

Save Batu Maung mangrove swamp, govt urged - Nation  The Star Online

GEORGE TOWN: The government has been urged to come up with plans to protect a mangrove swamp in Batu Maung that has withstood the test of time and is ...



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Austin, Bullen 2019 student research award winners named - University of Florida

Austin, Bullen 2019 student research award winners named  University of Florida

The Florida Museum of Natural History recently announced the winners of the 2019 Austin Award and Bullen Award for student research and significant ...



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Mangroves and seagrasses are key nurseries in coastal habitats: Findings will help resource managers with difficult conservation decisions - Science Daily

Mangroves and seagrasses are key nurseries in coastal habitats: Findings will help resource managers with difficult conservation decisions  Science Daily

Comprehensive analysis suggests that mangroves and seagrasses provide the greatest value as 'nurseries' for young fishes and invertebrates, providing key ...



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State issues licences after lifting mangrove logging ban - The Star, Kenya

State issues licences after lifting mangrove logging ban  The Star, Kenya

Loggers happy, say restriction broke marriages and increased poverty levels.



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Climate change imperils Sundarbans tiger habitats - Mongabay-India

Climate change imperils Sundarbans tiger habitats  Mongabay-India

Royal Bengal tigers in the Bangladesh Sundarbans could be wiped off by 2070 due to a combination of climate change and sea level rise. By 2050, researchers ...



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Residents file PIL on damage to mangroves due to road project - Business Standard

Residents file PIL on damage to mangroves due to road project  Business Standard

A group of city residents moved the Bombay High Court Friday, highlighting a potential threat to mangroves in suburban Versova from the proposed construction ...



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'Protectors of the coast' — what the northward march of mangroves means for fishing, flooding and carbon - PBS NewsHour

'Protectors of the coast' — what the northward march of mangroves means for fishing, flooding and carbon  PBS NewsHour

Ranges of mangroves have naturally waxed and waned over the years, influenced by the weather, but with climate change has come a crucial reduction in crop- ...



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Friday, March 29, 2019

Sea Shepherd Statement regarding the events in the Vaquita habitat on March 28th, 2019

EN ESPANOL {link to scroll down to Spanish version}

On the morning of March 28th, 2019, Sea Shepherd ships were conducting routine patrols in the Upper Gulf of California, Mexico, when an illegal totoaba gillnet was identified. While following the protocol of retrieving the illegal net, a skiff headed towards the M/V Sharpie at full speed.

The skiff approached the Sea Shepherd vessel and started to aggressively retrieve the illegal totoaba net that Sea Shepherd was engaged in confiscating with Mexican authorities on board.

Sea Shepherd’s M/V Sharpie immediately notified the Mexican Navy. The poachers started to transfer endangered totoaba fish from the net into their skiff.

The poachers managed to remove the net despite orders from Navy personnel advising them to leave the area. As the M/V Sharpie found itself free from the totoaba net, the Captain immediately maneuvered to vacate the area and avoid further confrontation. The poachers started following the Sea Shepherd vessel and harassing it, aggressively circling around the M/V Sharpie several times. The Sea Shepherd Captain then started to perform evasive anti-piracy maneuvers. The skiff ceased harassing the Sea Shepherd vessel. A high-speed Navy interceptor vessel arrived on the scene.

Sea Shepherd confirmed using Unmanned Aerial Vehicle that there were totoaba fish inside the skiff and the net in question was an illegal totoaba gillnet. All facts were promptly relayed to relevant Mexican Authorities. Upon confirming that the individuals were not fishermen but poachers committing criminal activities, the Navy Interceptor vessel pursued the skiff.

Sea Shepherd condemns the violence caused by the presence of organized totoaba trafficking in the Upper Gulf of California. Sea Shepherd acknowledges the legal and artisanal fishing community in their desire to restore peace and security in the region. Sea Shepherd vessels in the area are safe and will continue to work closely with the Government of Mexico in its effort to protect the vaquita refuge, restore law and order and save the vaquita porpoise from extinction.

Sea Shepherd Conservation Society is a marine conservation organization founded in 1977 by Captain Paul Watson working to protect marine wildlife and habitat. In Mexico, in order to prevent the extinction of the critically endangered vaquita porpoise, Sea Shepherd works with Mexican Authorities to remove illegal fishing gear from the Vaquita Refuge in the Upper Gulf of California. Sea Shepherd hosts authorities from various Mexican government agencies, such as the Navy and the Federal Police on its vessels. Sea Shepherd reports illegal activities to the

Mexican Navy. Sea Shepherd’s work consists of locating and removing illegal fishing gear and reporting suspicious activities to the Mexican Authorities.


SPANISH

Declaración de Sea Shepherd sobre los eventos en el hábitat de la vaquita marina el 28 de marzo de 2019

En la mañana del 28 de marzo de 2019, los barcos de Sea Shepherd estaban realizando patrullas rutinarias en el alto Golfo de California, México, cuando se identificó una red de enmalle ilegal de totoaba. Mientras seguía el protocolo de recuperación de la red ilegal, una panga se dirigió hacia el M / V Sharpie a toda velocidad.

El esquife se acercó al barco de Sea Shepherd y comenzó a recuperar agresivamente la red ilegal de totoaba que Sea Shepherd estaba confiscando con las autoridades mexicanas a bordo.

El M / V Sharpie de Sea Shepherd notificó inmediatamente a la Armada de México. Los cazadores furtivos comenzaron a transferir peces de totoaba en peligro de extinción desde la red a su bote.

Los cazadores furtivos lograron eliminar la red a pesar de las órdenes del personal de la Armada que les aconsejó abandonar el área. Cuando el M / V Sharpie se encontró libre de la red de totoaba, el Capitán maniobró de inmediato para abandonar el área y evitar una mayor confrontación. Los cazadores furtivos comenzaron a seguir el barco de Sea Shepherd y lo hostigaron, dando vueltas agresivas alrededor del M / V Sharpie varias veces. El capitán de Sea Shepherd comenzó a realizar maniobras evasivas contra la situación de piratería. El esquife dejó de acosar a la nave de Sea Shepherd. Un buque interceptor de la Marina de alta velocidad llegó a la escena.

Sea Shepherd confirmó usando un Vehículo Aéreo No Tripulado que había peces de totoaba dentro del bote y la red en cuestión era una red de enmalle ilegal de totoaba. Todos los hechos fueron transmitidos sin demora a las autoridades mexicanas pertinentes. Al confirmar que los individuos no eran pescadores, sino cazadores furtivos que cometían actividades criminales, el buque Interceptor de la Marina persiguió el esquife.

Sea Shepherd condena las situaciones de violencia desencadenadas por la presencia del tráfico organizado de totoaba en el Alto Golfo de California. Sea Shepherd reconoce a la comunidad pesquera legal y artesanal en su deseo de restablecer la paz y la seguridad en la región. Los barcos de Sea Shepherd en la zona están a salvo y continuarán trabajando estrechamente con el Gobierno de México en su esfuerzo por proteger el refugio de las vaquitas y salvar a la marsopa Vaquita de la extinción.

Sea Shepherd Conservation Society es una organización de conservación marina fundada en 1977 por el Capitán Paul Watson que trabaja para proteger la vida silvestre y los hábitats marinos. En México, para evitar la extinción de la marsopa vaquita en peligro crítico, Sea

Shepherd trabaja con las autoridades mexicanas para eliminar los artes de pesca ilegales del Refugio Vaquita en el Alto Golfo de California. Sea Shepherd recibe a autoridades de varias agencias gubernamentales mexicanas abordo, como la Armada y la Policía Federal. El trabajo de Sea Shepherd consiste en ubicar y retirar artes de pesca ilegales para proteger a la vaquita marina así como denunciar y reportar actividades sospechosas a las autoridades mexicanas.



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Thursday, March 28, 2019

Dozens Of Nonnative Marine Species Have Invaded The Galapagos Islands - NPR

Dozens Of Nonnative Marine Species Have Invaded The Galapagos Islands  NPR

The number of alien species, likely brought by ship traffic, stunned scientists. And they suspect that the foothold of such creatures may have been ...



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March 29 fishing report from Byron Stout - NBC2 News

March 29 fishing report from Byron Stout  NBC2 News

Snook experts have been seeing some really big fish that didn't get that way by biting everything thrown their way. Offshore reports have been pretty much so-so.



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Garrison Bradford & Associates Has Lifted Tjx Cos (TJX) Stake; Mangrove Partners Has Increased Abraxas Pete (AXAS) Position - The FinExaminer

Garrison Bradford & Associates Has Lifted Tjx Cos (TJX) Stake; Mangrove Partners Has Increased Abraxas Pete (AXAS) Position  The FinExaminer

Mangrove Partners increased Abraxas Pete Corp (AXAS) stake by 60.18% reported in 2018Q4 SEC filing. Mangrove Partners acquired 3.62 million shares as ...



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The Challenge of Deforestation in... - PR Nigeria News

The Challenge of Deforestation in...  PR Nigeria News

The Challenge of Deforestation in Nigeria. By Rukayat I. Olanrewaju. Nigeria is highly endowed with a lot of biological resources. The nation is one of the richest ...



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Bangkok promotes restoring mangrove forest on Earth Hour - https://ift.tt/1cGJmbd

Bangkok promotes restoring mangrove forest on Earth Hour  https://ift.tt/1cGJmbd

The Bangkok Metropolitan Administration (BMA) has promoted an Earth Hour event, campaigning for the restoration of the Bang Khun Thian mangrove forest on ...



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Study confirms and ranks nursery value of coastal habitats - Nature World News

Study confirms and ranks nursery value of coastal habitats  Nature World News

A comprehensive analysis of more than 11,000 previous coastal-habitat measurements suggests that mangroves and seagrasses provide the greatest value as ...



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Brookfield to invest in TransAlta, Mangrove Partners plans to nominate five board candidates - HydroWorld

Brookfield to invest in TransAlta, Mangrove Partners plans to nominate five board candidates  HydroWorld

TransAlta Corporation recently announced an investment by Brookfield Renewable Partners and its institutional partners that “crystalizes the value of its Hydro ...



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Mangrove Partners Stake in Pdc Energy INC (PDCE) Increased by $38.62 Million; Shares Rose - The EN Bulletin

Mangrove Partners Stake in Pdc Energy INC (PDCE) Increased by $38.62 Million; Shares Rose  The EN Bulletin

During Q4 2018 the big money sentiment decreased to 0.71. That's change of 0.14, from 2018Q3's 0.85. 49 investors sold all, 70 reduced holdings as PDCE ...



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How Cities Can Protect Themselves from Rising Waters - Scientific American

How Cities Can Protect Themselves from Rising Waters  Scientific American

Across the U.S., policymakers are scrambling to protect their communities from the effects of climate change. In January, Massachusetts Governor Charlie Baker ...



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Fishingcast: Conditions for Southwest Florida, March 29-April 4 - Marco News

Fishingcast: Conditions for Southwest Florida, March 29-April 4  Marco News

This should be a good week for action in the passes with warmer water and favorable mid-strength tides.



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What’s happening Thursday in the north valley - Chico Enterprise-Record

What’s happening Thursday in the north valley  Chico Enterprise-Record

Zingg Recital Hall: 5:30 p.m. Juror's talk by Leslie Jones, curator of prints and drawings at the Los Angeles County Museum of Art. Reception follows at The ...



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SK, PVEP restore mangrove forests in Vietnam - Korea Times

SK, PVEP restore mangrove forests in Vietnam  Korea Times

SK Innovation employees carried out volunteer work in Vietnam to restore mangrove forests together with employees from its Vietnamese partner PetroVietnam ...



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Galápagos Islands have far more invasive species than previously thought • Earth.com - Earth.com

Galápagos Islands have far more invasive species than previously thought • Earth.com  Earth.com

Researchers identified 30 new alien species believed to have been on the Galápagos Islands for decades, yet went unnoticed.



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Tiger habitats in the Sundarbans are imperiled by climate change; govt intervention is urgently required - Firstpost

Tiger habitats in the Sundarbans are imperiled by climate change; govt intervention is urgently required  Firstpost

Mukul believes the reason could be the domination of Ceriops decandra species of mangroves in this border stretch where salinity is relatively higher than the ...



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Australia to boost mud-crab export to China - Xinhua | English.news.cn - Xinhua

Australia to boost mud-crab export to China - Xinhua | English.news.cn  Xinhua

SYDNEY, March 28 (Xinhua) -- More Australian mud crabs will be exported to China thanks to a government fund supporting producers in the state of ...



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Laborer, doorkeeper, future queen: Neurobiology in turtle ants reflects division of labor - Science Daily

Laborer, doorkeeper, future queen: Neurobiology in turtle ants reflects division of labor  Science Daily

The neurobiology of turtle ants differs significantly according to their specialized role within the colony, according to a new study.



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Volvo wants to help fight sea pollution - Autoblog - Autoblog

Volvo wants to help fight sea pollution - Autoblog  Autoblog

Transcript: Volvo wants to help clean the ocean. The Volvo Living Seawall in Sydney Harbour is designed to fight sea pollution. Volvo worked with the Sydney ...



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MURDER: two Dangriga males shot in the Gungulung Area of Belize City - LoveFM

MURDER: two Dangriga males shot in the Gungulung Area of Belize City  LoveFM

Residents of the Gungulung area of Belize City behind St. Martin De Porres woke up to the sounds of gunshots this morning. About 6:45 a.m. the CET site ...



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Iran Qeshm Island Resort Gets Boost From Trump Sanctions - Bloomberg

Iran Qeshm Island Resort Gets Boost From Trump Sanctions  Bloomberg

Rare wildlife and dramatic canyons attracted a steady stream of travelers to Mina Fatemi Sadr's hotel on Iran's Qeshm island each Persian New Year holiday.



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Together Green Fellow Fernando Bretos Restores Coastal Miami Habitat with Eco-Art - Wisconsin Gazette

Together Green Fellow Fernando Bretos Restores Coastal Miami Habitat with Eco-Art  Wisconsin Gazette

Through his TogetherGreen fellowship, Fernando Bretos will work with volunteers to collect and exhibit mangrove seedlings artistically in the windows of public ...



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Take It from the 'Crocodile Lady': Conservation Needs More Women (Op-Ed) - Live Science

Take It from the 'Crocodile Lady': Conservation Needs More Women (Op-Ed)  Live Science

Let's get more women involved in helping save the world's animals.



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Orion Engineered Carbons SA (OEC) Reaches $18.41 Yearly Low; Mangrove Partners Has Increased By $690,386 Its Catalyst Pharmaceuticals (CPRX) Stake - EN Digest

Orion Engineered Carbons SA (OEC) Reaches $18.41 Yearly Low; Mangrove Partners Has Increased By $690,386 Its Catalyst Pharmaceuticals (CPRX) Stake  EN Digest

The stock of Orion Engineered Carbons S.A. (NYSE:OEC) hit a new 52-week low and has $17.31 target or 6.00% below today's $18.41 share price.



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Paddle your way through Lido Key's natural tunnels - FOX 13 News, Tampa Bay

Paddle your way through Lido Key's natural tunnels  FOX 13 News, Tampa Bay

LIDO KEY, Fla. (FOX 13) - Kayaking is a classic Florida pastime, and there is no shortage of wonderful places to paddle across the Sunshine State. But for a ...



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OUTDOORS: Location key for good fishing results - Sarasota Herald-Tribune

OUTDOORS: Location key for good fishing results  Sarasota Herald-Tribune

Recovery from red tide still spotty depending on locale.



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Saving Mumbai's natural mangrove buffer against rising tides - DW (English)

Saving Mumbai's natural mangrove buffer against rising tides  DW (English)

Young people in Mumbai are taking action to protect the city's vanishing mangrove forests. The trees, a vital flood defense, help protect millions of vulnerable ...



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--LADIES ONLY-- Eco Adventure To Discover Mangrove Life in Purple Island - ILoveQatar.net

--LADIES ONLY-- Eco Adventure To Discover Mangrove Life in Purple Island  ILoveQatar.net

Embrace Qatar's natural heritage by travelling to the North of Qatar, passing through Al Khor and enjoying the eco-tourist kayaking in the Mangroves of Al ...



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Will Bengal tigers really disappear from the Sundarbans? - The Daily Star

Will Bengal tigers really disappear from the Sundarbans?  The Daily Star

We recently published an article titled “Combined effects of climate change and sea-level rise project dramatic habitat loss of the globally endangered Bengal ...



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CEO defends TransAlta-Brookfield deal after U.S. investors seek option to cancel - Financial Post

CEO defends TransAlta-Brookfield deal after U.S. investors seek option to cancel  Financial Post

CALGARY — Power utility TransAlta Corp. thoroughly investigated other options before signing a $750-million investment deal with Brookfield Renewable ...



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Cove Key Bluescape Holdings LP Announces Changes to Early Warning Report regarding TransAlta Corporation - Canada NewsWire

Cove Key Bluescape Holdings LP Announces Changes to Early Warning Report regarding TransAlta Corporation  Canada NewsWire

NEW YORK, March 26, 2019 /CNW/ - Cove Key Bluescape Holdings LP ("Cove Key") announced today that on March 25, 2019, Mangrove Partners Master Fund ...



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'A double-edged sword': Mumbai pollution 'perfect' for flamingos - The Guardian

'A double-edged sword': Mumbai pollution 'perfect' for flamingos  The Guardian

The flamingo population of India's largest city has tripled. Is it thanks to sewage boosting the blue-green algae they feed on?



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TransAlta Receives Notice of Mangrove Partner's Intention to Nominate Dissident Board Candidates - PRNewswire

TransAlta Receives Notice of Mangrove Partner's Intention to Nominate Dissident Board Candidates  PRNewswire

CALGARY, March 25, 2019 /PRNewswire/ - TransAlta Corporation ("TransAlta" or the "Company") (TSX:TA) (NYSE:TAC) said today it has received notice under ...



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Eco activists warn of more flooding in Uran - Mumbai Mirror

Eco activists warn of more flooding in Uran  Mumbai Mirror

After Mirror's story on 5 villages in the area being inundated by seawater due to haphazard development, activists are compiling a report on the damage.



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Northward march of mangroves impacts fishing, flooding, carbon - The Florida Times-Union

Northward march of mangroves impacts fishing, flooding, carbon  The Florida Times-Union

ST. AUGUSTINE — Walking along a wooden path winding through Nease Beachfront Park, Danny Lippi pointed to coastal trees sprouting from the shrubbery ...



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Sea anemones are ingesting plastic microfibers


Tiny fragments of plastic in the ocean are consumed by sea anemones along with their food, and bleached anemones retain these microfibers longer than healthy ones, according to new research from Carnegie's Manoela Romanó de Orte, Sophie Clowez, and Ken Caldeira.

Their work, published by Environmental Pollution, is the first-ever investigation of the interactions between plastic microfibers and sea anemones. Anemones are closely related to corals and can help scientists understand how coral reef ecosystems are affected by millions of tons of plastic contaminating the world's oceans.

One of the most-common types of plastics in the ocean are microfibers from washing synthetic clothing and from the breakdown of maritime equipment such as ropes and nets. Microfibers are found across all the world's oceans and are beginning to appear in fish and shellfish consumed by humans.

"Plastic pollution is a serious and growing problem for our oceans and the animals that live in them," Romanó de Orte said. "We wanted to understand how these long-lived contaminants are affecting fragile coral reef ecosystems. Plastics could be confused by the organisms for food and could also be carriers of other harmful contaminants. Since sea anemones are closely related to corals, we decided to study sea anemones in the laboratory to better understand effects of plastics on corals in the wild."

Most laboratory research on plastic pollution uses tiny beads of plastic, not microfibers. So Romanó de Orte, Clowez, and Caldeira set out to determine whether microfibers are ingested by healthy sea anemones and by those that have lost the symbiotic algae that provide them with nutrients, a condition called bleaching. On corals reefs, bleaching is caused by increasing ocean temperatures due to global climate change.

The research team introduced three different kinds of microfibers -- nylon, polyester, and polypropylene -- to both unbleached and bleached sea anemones both alone and mixed with brine shrimp.

They found that when introduced alone, nylon was consumed by about a quarter of the unbleached anemones and the other two microfibers were not taken up at all. But when the microfibers were mixed with brine shrimp, about 80 percent of the unbleached anemones ingested all three microfibers. For the bleached anemones, 60 percent consumed nylon and 20 percent consumed polyester with no food present, and 80 percent took up all three microfibers when mixed with brine shrimp.

It took longer for the bleached anemones to expel the microfibers after ingesting them than it did for the healthy anemones, although all microfibers were gone by the third day. However, in a natural marine environment, anemones and coral would continually be reintroduced to new microfibers, making the contamination a chronic condition of their existence.

"Our work suggests that plastic pollution and climate change are packing a one-two punch for coral reefs," Caldeira explained. "When the reefs are bleached by hot ocean temperatures, the organisms are more likely to eat and retain plastic microfibers. It looks like the effects of global warming and of ocean pollution don't just add together, they multiply."

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In ancient oceans that resembled our own, oxygen loss triggered mass extinction


Roughly 430 million years ago, during the Earth's Silurian Period, global oceans were experiencing changes that would seem eerily familiar today. Melting polar ice sheets meant sea levels were steadily rising, and ocean oxygen was falling fast around the world.

At around the same time, a global die-off known among scientists as the Ireviken extinction event devastated scores of ancient species. Eighty percent of conodonts, which resembled small eels, were wiped out, along with half of all trilobites, which scuttled along the seafloor like their distant, modern-day relative the horseshoe crab.

Now, for the first time, a Florida State University team of researchers has uncovered conclusive evidence linking the period's sea level rise and ocean oxygen depletion to the widespread decimation of marine species. Their work highlights a dramatic story about the urgent threat posed by reduced oxygen conditions to the rich tapestry of ocean life.

The findings from their study were published in the journal Earth and Planetary Science Letters.

Although other researchers had produced reams of data on the Ireviken event, none had been able to definitively establish a link between the mass extinction and the chemical and climatic changes in the oceans.

"The connection between these changes in the carbon cycle and the marine extinction event had always been a mystery," said lead author Seth Young, an assistant professor in FSU's Department of Earth, Ocean and Atmospheric Science.

To address this old and obstinate question, Young and his co-authors deployed new and innovative strategies. They developed an advanced multiproxy experimental approach using stable carbon isotopes, stable sulfur isotopes and iodine geochemical signatures to produce detailed, first-of-their-kind measurements for local and global marine oxygen fluctuation during the Ireviken event.

"Those are three separate, independent geochemical proxies, but when you combine them together you have a very powerful data set to unravel phenomena from local to global scales," Young said. "That's the utility and uniqueness of combining these proxies."

Young and his team applied their multiproxy approach to samples from two geologically important field sites in Nevada and Tennessee, both of which were submerged under ancient oceans during the time of the extinction event. After analyzing their samples at the FSU-based National High Magnetic Field Laboratory, the connections between changes in ocean oxygen levels and mass extinction of marine organisms became clear.

The experiments revealed significant global oxygen depletion contemporaneous with the Ireviken event. Compounded with the rising sea level, which brought deoxygenated waters into shallower and more habitable areas, the reduced oxygen conditions were more than enough to play a central role in the mass extinction. This was the first direct evidence of a credible link between expansive oxygen loss and the Ireviken extinction event.

But, Young found, that oxygen loss wasn't universal. Only about 8 percent or less of the global oceans experienced significantly reducing conditions with very little to no oxygen and high levels of toxic sulfide, suggesting that these conditions didn't need to advance to whole-ocean scale to have an outsized, destructive effect.

"Our study finds that you don't necessarily need the entire ocean to be reducing to generate these kind of geochemical signatures and to provide a kill mechanism for this significant extinction event," Young said.

Today, like 430 million years ago, sea level is on the rise and ocean oxygen is hemorrhaging at an alarming rate. As parallels continue to emerge between today's changes and past calamities, peering into the Earth's distant past could be a critical tool in preparing for the future.

"There are common threads with other climatic and extinction events throughout Earth's history, and future work will continue to help us understand the similarities and differences of these events to constrain future climate predictions," said co-author Jeremy Owens, an assistant professor in FSU's Department of Earth, Ocean and Atmospheric Science who has worked on other extinction events in the Jurassic and Cretaceous periods.

"I think it's important to see how these events played out all the way from extinction interval through recovery period, how severe they were and their connections to the ancient environment along the way," added Young. "That could help us figure out what's in store for our future and how we can potentially mitigate some of the negative outcomes."

This study was funded by the National Science Foundation and the Geological Society of America.



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Wednesday, March 27, 2019

Tracing the process of nitrous oxide formation in the ocean


Just like oxygen, nitrogen is of fundamental importance for life on Earth. Depending on the forms and compounds in which it occurs, it can promote life, but also limit it. In addition, some nitrogen compounds, such as nitrous oxide, are extremely effective greenhouse gases in the atmosphere. It is therefore important to understand the formation processes of various nitrogen compounds in nature and the factors that influence these processes.

Researchers at the GEOMAR Helmholtz Centre for Ocean Research Kiel have now succeeded for the first time in directly detecting an oceanic process that is fundamental to the nitrogen cycle, the so-called nitrification, by measuring the short-lived compound hydroxylamine. "This detection is otherwise only possible with very complex analyses in special onshore laboratories. With the new method, we were able to carry out the measurements on board," explains marine chemist Dr. Frederike Korth from GEOMAR. She is the lead author of the study, which has now been published in the international journal Geophysical Research Letters.

Hydroxylamine (NH2OH) is a compound of nitrogen with hydrogen and oxygen that decomposes very quickly if oxygen is present. "This is why there have been no measurements of hydroxylamine from the oceans so far," explains Prof. Dr. Hermann Bange from GEOMAR, head of the working group and co-author of the new study.

However, the chemists from Kiel, who are specialized in measurements in the ocean, were able to determine dissolved hydroxylamine in water samples from numerous stations during several expeditions of the German research vessels MARIA S. MERIAN and METEOR to the Pacific and Atlantic Oceans. "The compound can be a precursor of nitrous oxide in the nitrogen cycle, but only in the transformation process of nitrification," explains Korth. A comparison of nitrous oxide and hydroxylamine concentrations in ocean water therefore provides a relatively quick and simple indication of the occurrence of this process.

The method used was already known in theory, but there were still problems with chemical interferences. "For our study, we have now -for the first time- found a reliable way to determine hydroxylamine concentrations in seawater on board," says Professor Bange.

With this new method, there is now a comparatively simple and quick way to determine where nitrification takes place in the ocean -- and ultimately where nitrous oxide can form in the ocean as a result of this process. "Of course, many more measurements are necessary in order to make global statements. But the simpler the analyses are, the more likely it is that we will receive the large amounts of data we need to assemble further pieces in the puzzle of the nitrogen cycle," emphasises Professor Bange.

This study was funded by the Federal Ministry of Education and Research (BMBF) within the framework of the joint project SOPRAN ("Surface Ocean Processes in the Anthropocene") and by the German Research Foundation(DFG) within the framework of the Collaborative Research Centre 754 "Climate-Biogeochemical Interactions in the Tropical Ocean."

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Signs of 1906 earthquake revealed in mapping of offshore northern San Andreas Fault

A new high-resolution map of a poorly known section of the northern San Andreas Fault reveals signs of the 1906 San Francisco earthquake, and may hold some clues as to how the fault could rupture in the future, according to a new study published in the Bulletin of the Seismological Society of America.

Samuel Johnson of the U.S. Geological Survey and Jeffrey Beeson of Fugro USA Marine Inc. compiled the map for the 35-kilometer-long section of the fault between Tomales Point and Fort Ross, California. They discovered two large zones, each covering about two square miles, of slope failure on the seafloor offshore of the Russian River, marked by lobes that appear to have formed when the intense shaking of the 1906 earthquake caused sand liquefaction.

The mapping also demonstrates that there are two active strands of the fault within the northern part of Bodega Bay, each of which has moved tens of meters within the past 10,000 years.

The findings "are not going to affect what we know about the recurrence interval or slip rate" on the Northern San Andreas Fault, "but it will affect what we know about how the northern San Andreas fault ruptures," Johnson said.

"Normally if you were studying a fault zone on land and found a prominent fault strand, you would probably assume that was the strand that has most recently ruptured," he explained. "Because we found two here, it's a cautionary tale for earthquake geologists to comprehensively map fault zones. You may only capture part of the earthquake history or slip rate along a fault if you only know about one strand in a multi-strand zone"

The northern offshore areas of the fault have been intensively studied only within the past eight years, said Johnson. While much of the rest of the San Andreas fault has become a natural laboratory for studying earthquakes, "it's a major geoscience oversight that these northern areas have not been studied before," said Johnson. "We have been waiting for technology to produce the tools to look at these areas in high resolution."

The researchers used data drawn from several techniques, including high-resolution seismic reflection profiles and multibeam bathymetry, both of which use multiple directed sound waves to image layers on or below the seafloor. Collection of some of the bathymetry data was funded by the California Ocean Protection Council as part of its work to designate and develop monitoring strategies for Marine Protected Areas, and by the National Oceanic and Atmospheric Administration (NOAA) to improve nautical charts.

The liquefaction lobes, which are similar to the ground failure seen offshore of the Klamath River delta during the magnitude 7.2 Eureka earthquake in northern California in 1980, were one of the surprises uncovered during the mapping, said Johnson.

The researchers were lucky to have caught a glimpse of the lobes before they disappeared, as some of the features are already being smoothed over by sediments deposited after 1906, Johnson said. "If you came back in another 50 to 100 years, you might not see these features because they would be all covered up. You can see their lifespan in the data and images we have now."

Other insights from the map include a look at how movement along this portion of the fault has affected the onshore landscape, including the uplift of marine terraces and rapid formation of beaches and coastal sand dunes. For instance, the researchers noted that uplift west of the Northern San Andreas Fault has blocked the southward drift of sediment from the Russian River and Salmon Creek, leading to the swiftly growing South Salmon Creek Beach and its background of high coastal sand dunes.

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Tuesday, March 26, 2019

Cold water currently slowing fastest Greenland glacier


NASA research shows that Jakobshavn Glacier, which has been Greenland's fastest-flowing and fastest-thinning glacier for the last 20 years, has made an unexpected about-face. Jakobshavn is now flowing more slowly, thickening, and advancing toward the ocean instead of retreating farther inland. The glacier is still adding to global sea level rise -- it continues to lose more ice to the ocean than it gains from snow accumulation -- but at a slower rate.

The researchers conclude that the slowdown of this glacier, known in the Greenlandic language as Sermeq Kujalleq, occurred because an ocean current that brings water to the glacier's ocean face grew much cooler in 2016. Water temperatures in the vicinity of the glacier are now colder than they have been since the mid-1980s.

In a study published in Nature Geoscience, Ala Khazendar of NASA's Jet Propulsion Laboratory in Pasadena, California, and colleagues report the change in Jakobshavn's behavior and trace the source of the cooler water to the North Atlantic Ocean more than 600 miles (966 kilometers) south of the glacier. The research is based on data from NASA's Oceans Melting Greenland (OMG) mission and other observations.

The scientists were so shocked to find the change, Khazendar said: "At first we didn't believe it. We had pretty much assumed that Jakobshavn would just keep going on as it had over the last 20 years." However, the OMG mission has recorded cold water near Jakobshavn for three years in a row.

The researchers suspect the cold water was set in motion by a climate pattern called the North Atlantic Oscillation (NAO), which causes the northern Atlantic Ocean to switch slowly between warm and cold every five to 20 years. The climate pattern settled into a new phase recently, cooling the Atlantic in general. This change was accompanied by some extra cooling in 2016 of the waters along Greenland's southwest coast, which flowed up the west coast, eventually reaching Jakobshavn.

When the climate pattern flips again, Jakobshavn will most likely start accelerating and thinning again.

Josh Willis of JPL, the principal investigator of OMG, explained, "Jakobshavn is getting a temporary break from this climate pattern. But in the long run, the oceans are warming. And seeing the oceans have such a huge impact on the glaciers is bad news for Greenland's ice sheet."

Water Temperature and Weather

Jakobshavn, located on Greenland's west coast, drains about 7 percent of the island's ice sheet. Because of its size and importance to sea level rise, scientists from NASA and other institutions have been observing it for many years.

Researchers hypothesized that the rapid retreat of the glacier began with the early 2000s loss of the glacier's ice shelf -- a floating extension of the glacier that slows its flow. When ice shelves disintegrate, glaciers often speed up in response. Jakobshavn has been accelerating each year since losing its ice shelf, and its front (where the ice reaches the ocean) has been retreating. It lost so much ice between 2003 and 2016 that its thickness, top to bottom, shrank by 500 feet (152 meters).

The research team combined earlier data on ocean temperature with data from the OMG mission, which has measured ocean temperature and salinity around the entire island for the last three summers. They found that in 2016, water in Jakobshavn's fjord cooled to temperatures not seen since the 1980s.

"Tracing the origin of the cold waters in front of Jakobshavn was a challenge," explained Ian Fenty of JPL, a co-author of the study. "There are enough observations to see the cooling but not really enough to figure out where it came from." Using an ocean model called Estimating the Circulation and Climate of the Ocean (ECCO) to help fill in the gaps, the team traced the cool water upstream (toward the south) to a current that carries water around the southern tip of Greenland and northward along its west coast. In 2016, the water in this current cooled by more than 2.7 degrees Fahrenheit (1.5 degrees Celsius).

Although the last few winters were relatively mild in Greenland itself, they were much colder and windier than usual over the North Atlantic Ocean. The cold weather coincided with the switch in the NAO climate pattern. Under the influence of this change, the Atlantic Ocean near Greenland cooled by about 0.5 degrees Fahrenheit (1 degree Celsius) between 2013 and 2016. These generally cooler conditions set the stage for the rapid cooling of the ocean current in southwest Greenland in early 2016. The cooler waters arrived near Jakobshavn that summer, at the same time that Jakobshavn slowed dramatically.

The team suspects that both the widespread Atlantic cooling and the dramatic cooling of the waters that reached the glacier were driven by the shift in the NAO. If so, the cooling is temporary and warm waters will return when the NAO shifts to a warm phase once again.

Wider Implications

The warming climate has increased the risk of melting for all land ice worldwide, but many factors can speed or slow the rate of ice loss. "For example," Khazendar said, "the shape of the bed under a glacier is very important, but it is not destiny. We've shown that ocean temperatures can be just as important."

Tom Wagner, NASA Headquarters program scientist for the cryosphere, who was not involved in the study, said, "The OMG mission deployed new technologies that allowed us to observe a natural experiment, much as we would do in a laboratory, where variations in ocean temperatures were used to control the flow of a glacier. Their findings -- especially about how quickly the ice responds -- will be important to projecting sea level rise in both the near and distant future."

The paper on the new research in Nature Geoscience is titled "Jakobshavn's 20 Years of Acceleration and Thinning Interrupted by Regional Ocean Cooling." Besides JPL, co-authors are at Remote Sensing Solutions in Barnstable, Massachusetts, and the University of Utrecht in the Netherlands.



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Monday, March 25, 2019

Changes in ocean 'conveyor belt' foretold abrupt climate changes by four centuries

In the Atlantic Ocean, a giant 'conveyor belt' carries warm waters from the tropics into the North Atlantic, where they cool and sink and then return southwards in the deep ocean. This circulation pattern is an important player in the global climate, regulating weather patterns in the Arctic, Europe, and around the world. Evidence increasingly suggests that this system is slowing down, and some scientists fear it could have major effects, such as causing temperatures to dive in Europe and warming the waters off the East coast of the United States, potentially harming fisheries and exacerbating hurricanes. (For an over-exaggeration of the potential effects, see the 2004 movie The Day After Tomorrow.)

A new study published in Nature Communications provides insight into how quickly these changes could take effect if the system continues weakening. Led by scientists at Columbia's Lamont-Doherty Earth Observatory in collaboration with the Norwegian Research Centre, the study is the first to precisely determine the time lags between past changes to the ocean conveyor belt and major climate changes.

The team studied a key section of the ocean current pattern, known as the Atlantic Meridional Overturning Circulation (AMOC). They zeroed in on a section where water sinks from the surface to the bottom of the North Atlantic. They confirmed that the AMOC started weakening about 400 years before a major cold snap 13,000 years ago, and began strengthening again about 400 years before an abrupt warming 11,000 years ago.

"Our reconstructions indicate that there are clear climate precursors provided by the ocean state -- like warning signs, so to speak," says lead author Francesco Muschitiello, who completed the work as a postdoc at Lamont-Doherty and now works at the University of Cambridge.

Until now, it has been difficult to resolve whether past changes in the ocean conveyor belt occurred before or after the abrupt climate shifts that punctuated the last deglaciation in the Northern Hemisphere. To overcome the usual challenges, the team pieced together data from a sediment core drilled from the bottom of the Norwegian Sea, a lake sediment core from southern Scandinavia, and ice cores from Greenland.

Scientists typically rely on radioactive carbon (carbon 14) dating to determine the ages of sediments; measuring how much carbon 14 remains in a fossil reveals how long ago the organism died, and thus how old the surrounding sediment is. This relationship is tricky in ocean sediments, though, because carbon 14 is created in the atmosphere, and it takes time for the carbon to make its way through the ocean. By the time it reaches the organisms at the bottom of the water column, the carbon 14 could already be hundreds or thousands of years old. So the team needed a different way to date the sediment layers in the marine core.

That's why they measured carbon 14 content in a nearby lake sediment core. The ancient layers of the lake contain decaying plants that pulled carbon 14 directly out of the atmosphere, so the scientists could find out the age of each lake sediment layer. Then they used a few techniques to match the lake sediment core layers to the marine core layers. Ash layers from two long-ago volcanic eruptions in Iceland helped to line things up. This process gave the team the precise age of each layer in the marine core.

Next, they compared the real age of the marine sediments to the age they were reading from the deep ocean carbon 14 measurements; the differences between these two gave them an estimate of how long it took for the atmospheric carbon 14 to reach the seafloor. In other words, it revealed how quickly water was sinking in this area, in a process called deep water formation that's essential to keeping the AMOC circulating. Now they had a record of ocean circulation patterns in this region over time.

The final piece of the puzzle was to analyze ice cores from Greenland, to study changes in temperature and climate over the same time period. Measurements of beryllium-10 in the ice cores helped the authors precisely link the ice cores to the carbon 14 records, putting both sets of data on the same timeline. Now they could finally compare the order of events between ocean circulation changes and climatic shifts.

Comparing the data from the three cores revealed that the AMOC weakened in the time leading up to the planet's last major cold snap, called the Younger Dryas, around 13,000 years ago. The ocean circulation began slowing down about 400 years before the cold snap, but once the climate started changing, temperatures over Greenland plunged quickly by about 6 degrees.

A similar pattern emerged near the end of that cold snap; the current started strengthening roughly 400 years before the atmosphere began to heat up dramatically, transitioning out of the ice age. Once the deglaciation started, Greenland warmed up rapidly -- its average temperature climbed by about 8 degrees over just a few decades, causing glaciers to melt and sea ice to drop off considerably in the North Atlantic.

"Those [400-year] lags are probably on the long side of what many would have expected," says Anders Svensson, who studies the paleoclimate at the University of Copenhagen, and who was not involved with the current study. "Many previous studies have suggested time lags of various lengths, but few have had the necessary tools to determine the phasing with sufficient accuracy."

Co-author William D'Andrea, a paleoclimatologist at Lamont-Doherty was surprised by what they found -- he says the lag times are two or three times greater than he would have expected.

For now it's not fully clear why there was such a long delay between the AMOC changes and climatic changes over the North Atlantic.

It's also difficult to pinpoint what these patterns from the past could signify for Earth's future. Recent evidence suggests that the AMOC began weakening again 150 years ago. However, current conditions are quite different from the last time around, says Muschitiello; the global thermostat was much lower back then, winter sea ice stretched farther south than New York Harbor, and the ocean structure would have been much different. In addition, the past weakening of the AMOC was much more dramatic than today's trend so far.

Nevertheless, D'Andrea says that "if the AMOC were to weaken to the degree it did back then, it could take hundreds of years for major climate changes to actually manifest."

Muschitiello adds, "It is clear that there are some precursors in the ocean, so we should be watching the ocean. The mere fact that AMOC has been slowing down, that should be a concern based on what we have found."

The study should also help to improve the physics behind climate models, which generally assume the climate responds abruptly at the same time as AMOC intensity changes. The model refinements, in turn, could make climate predictions more accurate. As Svensson puts it: "As long as we do not understand the climate of the past, it is very difficult to constrain the climate models needed to make realistic future scenarios."



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The struggle for life in the Dead Sea sediments: Necrophagy as a survival mechanism

The Dead Sea is not completely dead. The most saline lake on Earth (more than 10 times saltier than sea water) is a harsh environment where only salt-loving microbes from the Archaea domain, known as extreme halophiles, are able to survive. Geologists are interested in the evolution of this lake and have been investigating its subsurface to reconstruct its biological and geological history. The salty sediments of the Dead Sea are still full of mysteries, in particular regarding the life forms harbored there, commonly called the deep subsurface biosphere.

There is a vast microbial biomass below Earth's surface, which survives without oxygen, light, or fresh food delivery. This subsurface biosphere has been the subject of numerous scientific studies. Its importance in global biogeochemical cycles is largely acknowledged, and constant efforts are being carried out to estimate the limits of life development in these extreme environments, as they present an immense potential for medical and biotechnology research. Given its exceptional salinity, the Dead Sea subsurface is an environment where life is pushed to its limits and, as such, constitutes a prime choice to investigate how life forms can adapt and thrive.

The new study for Geology by Camille Thomas and colleagues describes a novel strategy used by some microorganisms to survive in the hypersaline, carbon-, and water-deprived environment of the Dead Sea subsurface.

By looking at molecular fossils preserved in deep sediments, the team of Swiss and French scientists found unique molecular compounds, known as storage lipids, in the most saline sedimentary layers of the lake. The chemical structure of these lipid compounds indicates that remains from extreme halophilic archaea were recycled by other microbial populations, likely from the bacteria domain, previously thought to be unadapted to such a harsh locale. This necrophagic behavior allowed them to build carbon stocks in this food-deprived environment. It also provided water to mitigate the extreme salinity of the Dead Sea subsurface.

This all constitutes an unprecedented strategy for survival in the deep biosphere. These findings widen the understanding of adaptations exhibited by microorganisms to live in extreme environments, a research domain scientists are only beginning to understand.

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Antarctic snowfall dominated by a few extreme snowstorms

A new study reveals the importance of a small number of intense storms around Antarctica in controlling the amount of snow falling across the continent.

Published in the journal Geophysical Research Letters, the study analysed daily Antarctic snowfall data starting in the 1970s. It reveals how the most extreme 10% of snowfall events account for up to 60% of annual snowfall in some places, and are the result of a few large storms that develop over the Southern Ocean.

In one particular case, 44% of annual snowfall occurred in a single day. Understanding the significance of these events is critical for scientists interpreting Antarctica's past, as well as predicting how our climate may behave in future.

The Antarctic ice sheet is extremely important because of its potential contribution to global sea level rise. The mass of the ice sheet is constantly changing because of the ice gained by snowfall compared with the loss of ice at the margins via iceberg calving and melting.

Lead author, Prof. John Turner, from British Antarctic Survey, says: "Antarctica is already the most extreme continent on earth -- the windiest, the coldest, the driest. But even by Antarctic standards, we were surprised to see the extent to which a small number of extreme snowfall events are responsible for the marked differences in snowfall from year to year.

"They are often short-lived events, which arrive suddenly and deposit a large fraction of the year's snowfall. If you are an ice core scientist trying to decipher messages from our past climate, and predict the future, knowing about these extreme weather events can be the missing part of the jigsaw."

The international team, comprising scientists from India, France, China, Netherlands and the UK, were able to investigate snowfall across the Antarctic from 1979 to 2016 using the output of an atmospheric model called RACMO2. This was developed by Dutch researchers, and revealed the impact of the most extreme snow storms.

BAS Ice Core scientist, and co-author on the paper, Dr Liz Thomas says: "Ice cores are invaluable in reconstructing past climate. However, an ice core site that is dominated by snowfall from occasional extreme storms might not be representative of climate conditions through the year.

"This new study will help ensure that future ice cores are not drilled in regions dominated by precipitation extremes."

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Seagrass meadows support food security in Guimaras – research - Rappler

Seagrass meadows support food security in Guimaras – research  Rappler

Guimaras, a place highly dependent on marine and coastal resources, is the perfect site to investigate and demonstrate how much seagrasses contribute to ...



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Brookfield Set to Invest $559 Million in Canada's TransAlta - Bloomberg

Brookfield Set to Invest $559 Million in Canada's TransAlta  Bloomberg

Brookfield Asset Management Inc. will invest C$750 million ($559 million) in power producer TransAlta Corp. and nominate two directors to its board.



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Yale hosting Environmental Film Festival - Hartford Courant

Yale hosting Environmental Film Festival  Hartford Courant

The Environmental Film Festival at Yale, the annual movie series timed to coincide with Earth Day, is returning to New Haven.



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DepEd Ilocos Norte ditches single-use plastic - pna.gov.ph

DepEd Ilocos Norte ditches single-use plastic  pna.gov.ph

LAOAG CITY -- Personnel of the Schools Division of Ilocos Norte (SDOIN) has joined a number of volunteers trying to beat plastic pollution in the province.



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Mumbai Lokhandwala lake clean up begins after 10 years - Mid-Day

Mumbai Lokhandwala lake clean up begins after 10 years  Mid-Day

It took 10 long years for the locals of Oshiwara-Lokhandwala to finally be heard. Their campaign against illegal dumping of debris and waste in the Lokhandwala ...



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4 Things You Must do When in Sundarbans - India.com News

4 Things You Must do When in Sundarbans  India.com News

If you prefer watch towers to night clubs, head to Sundarbans. - 4 Things You Must do When in Sundarbans.



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Daily Star Opinions: Conservation Matters with Errol A. Gatumbato - Visayan Daily Star

Daily Star Opinions: Conservation Matters with Errol A. Gatumbato  Visayan Daily Star

The observance of the International Day of Forests on March 21 did not have so much fanfare, except for some postings in social media about the event. It was in ...



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New species of sardines found in Manila Bay; Oceana calls to stop reclamation in the area - INQUIRER.net

New species of sardines found in Manila Bay; Oceana calls to stop reclamation in the area  INQUIRER.net

MANILA, Philippines – Manila Bay's ecosystem is not dying. In fact, a new sardine species, Sardinella pacifica, has been discovered in Manila Bay waters and in ...



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Waiuku Trail milestone reached - OurAuckland

Waiuku Trail milestone reached  OurAuckland

Work on the Waiuku Trails is officially underway after a ceremonial sod-turning event.



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Water can exacerbate inequality—or it can help solve it - Eco-Business

Water can exacerbate inequality—or it can help solve it  Eco-Business

How can water resources be better managed to bridge the widening inequality gap and provide clean, safe water and sanitation for all?



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Coalition praises Sabah Chief Minister’s concern for the environment - The Borneo Post

Coalition praises Sabah Chief Minister’s concern for the environment  The Borneo Post

KOTA KINABALU: Coalition Humans Habitats Highways (3H) applauded a statement by Sabah Chief Minister, Datuk Seri Mohd Shafie Apdal, that the ...



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Dinner at Betty's: Best of the Riviera Nayarit - Roanoke Times

Dinner at Betty's: Best of the Riviera Nayarit  Roanoke Times

SAN BLAS, Mexico — Does your favorite celebrity chef spring to mind when you're feeling puckish, clicking through the channels and looking for a cooking show ...



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Activists demand green manifesto ahead of polls - The Asian Age

Activists demand green manifesto ahead of polls  The Asian Age

A striking example of a party turning away from their promise is Shiv Sena, which had strongly protested against Metro car shed in Aarey.



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Two cars involved in T-bone crash on Mangrove Ave. in Chico - Action News Now

Two cars involved in T-bone crash on Mangrove Ave. in Chico  Action News Now

CHICO, Calif. - A car was T-boned along 5th Ave. and Mangrove Ave. in Chico Saturday afternoon. Chico police were on the scene just before 3:00 p.m..



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Northward march of mangroves impacts fishing, flooding and carbon - The Florida Times-Union

Northward march of mangroves impacts fishing, flooding and carbon  The Florida Times-Union

ST. AUGUSTINE — Walking along a wooden path winding through Nease Beachfront Park, Danny Lippi pointed to coastal trees sprouting from the shrubbery ...



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52 rusty fishing boats painted to preserve marine biodiversity - Designboom

52 rusty fishing boats painted to preserve marine biodiversity  Designboom

at the dominican republic's northwest most fingertip boardering haiti, spanish art collective boa mistura painted 52 boats with the help of fishermen and..



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FWC warns wildlife become more active in spring - Walton Sun

FWC warns wildlife become more active in spring  Walton Sun

TALLAHASSEE — A variety of species are following their internal biological clocks that tell them to move, mate, feed and nest. Florida's residents and visitors ...



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Meet the Odisha women’s group that has been guarding their forest from timber smugglers for 20 years - Scroll.in

Meet the Odisha women’s group that has been guarding their forest from timber smugglers for 20 years  Scroll.in

They voluntarily came together to form Pir Jahania Van Surakhya Samiti after seeing the devastation caused by the 1999 supercyclone.



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Green and Gray Infrastructure More Powerful When They Work Together - Modern Diplomacy

Green and Gray Infrastructure More Powerful When They Work Together  Modern Diplomacy

A new generation of infrastructure projects that harness the power of nature can help achieve development goals, including water security and climate ...



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Lynas storing too much waste at Balok Mangrove, claims anti-Lynas group - Malay Mail

Lynas storing too much waste at Balok Mangrove, claims anti-Lynas group  Malay Mail

KUALA LUMPUR, March 24 — Save Malaysia Stop Lynas (SMSL) today claimed that the Balok Mangrove reserve in Pahang, located next to the Lynas rare ...



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Abu Dhabi project supports economy, environment and food security - gulfnews.com

Abu Dhabi project supports economy, environment and food security  gulfnews.com

Biofuel project bring benefits to overall economy, nature and food production.



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Abu Dhabi pioneers world's first desert ecosystem - gulfnews.com

Abu Dhabi pioneers world's first desert ecosystem  gulfnews.com

Abu Dhabi: Imagine this: you are relaxing on board a flight enjoying a delicious seafood meal when a member of the cabin crew informs you that the succulent ...



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Analysts See $0.06 EPS for Natus Medical (BABY); Mangrove Partners Raised By $1.67 Million Its Ani Pharmaceuticals (ANIP) Holding - Thе Mоnіtоr

Analysts See $0.06 EPS for Natus Medical (BABY); Mangrove Partners Raised By $1.67 Million Its Ani Pharmaceuticals (ANIP) Holding  Thе Mоnіtоr

Analysts expect Natus Medical Incorporated (NASDAQ:BABY) to report $0.06 EPS on April, 24.They anticipate $0.18 EPS change or 75.00% from last quarter's ...



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Latam Eco Review: Pumas hate disco and Ecuador’s newly described glass frog - Mongabay.com

Latam Eco Review: Pumas hate disco and Ecuador’s newly described glass frog  Mongabay.com

Ecuador's most recently described glass frogs, a model plan for coastal management in Colombia, and using lights to scare away pumas in Chile were among ...



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‘Versova-Lokhandwala link road will destroy mangroves’ - The Asian Age

‘Versova-Lokhandwala link road will destroy mangroves’  The Asian Age

The petition has said that construction of the road does not follow sustainable development.



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Mumbai: "Environmental crime of highest magnitude", wetlands destroyed in the name of development - Times Now

Mumbai: "Environmental crime of highest magnitude", wetlands destroyed in the name of development  Times Now

The reason behind the Mumbai and Chennai floods has been discovered. A major cause of the constant floods that strike various areas of the country is the ...



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$1B Charlotte Harbor, Florida, waterfront resort breaks ground - Construction Dive

$1B Charlotte Harbor, Florida, waterfront resort breaks ground  Construction Dive

Construction industry news, trends and jobs for building professionals who want mobile-friendly *content*.



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'Protectors Of The Coast': What Mangroves' Northward March Means For Northeast Florida - WJCT NEWS

'Protectors Of The Coast': What Mangroves' Northward March Means For Northeast Florida  WJCT NEWS

Walking along a wooden path winding through Nease Beachfront Park in St. Augustine, Danny Lippi pointed to coastal trees sprouting from the shrubbery.



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Ladies ONLY" Eco Adventure To Discover Mangrove Life - ILoveQatar.net

Ladies ONLY" Eco Adventure To Discover Mangrove Life  ILoveQatar.net

Embrace Qatar's natural heritage by travelling to the North of Qatar, passing through Al Khor and enjoying the eco-tourist kayaking in the Mangroves of Al ...



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How many species are in the deep sea?

Saturday, March 23, 2019

Arctic sea ice 2019 wintertime extent is seventh lowest


Sea ice in the Arctic appears to have hit its annual maximum extent after growing through the fall and winter. The 2019 wintertime extent reached on March 13 ties with 2007's as the 7th smallest extent of winter sea ice in the satellite record, according to scientists at the NASA-supported National Snow and Ice Data Center and NASA.

This year's maximum extent peaked at 5.71 million square miles (14.78 million square kilometers) and is 332,000 square miles (860,000 square kilometers) below the 1981 to 2010 average maximum -- equivalent to missing an area of ice larger than the state of Texas.

The Arctic sea ice cover, an expanse of frozen seawater floating on top of the Arctic Ocean and surrounding seas, thickens and expands during the fall and winter months. The sea ice hits its maximum yearly extent sometime between late February and early April. It thins and shrinks during the spring and summer until it reaches its annual minimum extent in September.

Beyond its seasonal wax and wane cycles, Arctic sea ice extent has been plummeting during both the growing and melting seasons over the last 40 years. The 2019 maximum extent breaks a string of record or near-record lows that started in 2015 -- but that does not necessarily mean that Arctic sea ice is recovering.

"While this year wasn't a record low, the maximum extent still points to there being a sustained decline in winter sea ice," said Melinda Webster, a sea ice scientist at NASA's Goddard Space Flight Center in Greenbelt, Maryland. "The temperatures in the Arctic were a bit higher than average and we saw a lot of ice loss in the Bering Sea, but nothing this winter was as extreme or dramatic compared to recent years and the record lows."

Rising temperatures in the Arctic over the past decades have also thinned the sea ice pack. Multiyear ice, the older and thicker ice that acted like a bastion against melting for the rest of the sea ice cover, has mostly disappeared. A 2018 study led by Ron Kwok, a sea ice researcher with NASA's Jet Propulsion Laboratory in Pasadena, California, found that 70 percent of the ice pack now consists of seasonal ice -- sea ice that grows rapidly in the winter only to melt during the next summer.

"The large changes in ice coverage associated with the loss of the multiyear ice pack have already occurred," Kwok said. "The seasonal ice now represents a larger fraction of the Arctic sea ice cover. Because this young ice is thinner and grows faster in the winter, it is more responsive to weather and makes the sea ice cover respond differently than before. It's not that we won't see new wintertime or summertime record lows in the next years -- it's just that the variability is going to be higher."

Story Source:

Materials provided by NASA/Goddard Space Flight Center. Note: Content may be edited for style and length.



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Friday, March 22, 2019

Tall ice-cliffs may trigger big calving events -- and fast sea-level rise


Glaciers that drain ice sheets such as Antarctica or Greenland often flow into the ocean, ending in near-vertical cliffs. As the glacier flows into the sea, chunks of the ice break off in calving events. Although much calving occurs when the ocean melts the front of the ice, and ice cliff above falls down, a new study presents another method of calving: slumping. And this process could break off much larger chunks of ice at a quicker rate.

The ice-cliff research was spurred by a helicopter ride over Jakobshavn and Helheim glaciers on Greenland's eastern coast. Helheim ends abruptly in the ocean, in near-vertical ice-cliffs reaching 30-stories high (100 meters). On the flight, scientists viewed large cracks (called crevasses) on top of the ice that marched towards the end of the glacier.

"Geologists have spent decades -- centuries -- worrying about slumps," says Richard Alley, co-author of the new paper in Geology. A slump occurs when mass of rock or sediment loses some of its strength, breaks away from its neighboring land, and slides down a slope. Typically, slumps are marked by a steep scarp where the material broke away, followed by a block of material moved downslope.

Alley says the research team noted that features on Helheim glacier are typical of what you might see in a slump-prone terrestrial landscape and they wondered if ice might suffer the same fate. "You've got a crevasse that serves as a head scarp and then you've got the stresses [within the ice] maximized down at the water level," he says.

To test if slumping occurs on ice cliffs, the team monitored Helheim glacier during a calving event, using real-aperture terrestrial radar interferometery. They measured speed, position, and motion of the calving ice. The researchers observed an ice-flow acceleration just before an initial slump, followed by a rotating, full ice-thickness calving of the glacier -- including the entire remaining ice-cliff, reaching both above and below the water line.

Removing the weight of the upper ice by slumping encourages the underlying ice to pop upward. "Because it's still attached at the back, it's going to rotate a little bit," says Alley. The rotation causes a crack to form at the bottom of the glacier as the ice flexes. In turn, the crack can weaken the ice, creating a large calving event -- all triggered by the initial slump on top of the ice cliff.

After observing the slump-triggered calving event, the team modeled when slumping events were most likely to occur on an ice cliff. The modeling looked at tensile, shear, and compressive failure for ice cliffs, and included characteristics of the ice. The scientists found that cliffs reaching more than 100 meters of ice above water were likely to have slumping occur.

Alley says regular calving events happen relatively slowly, such as when the ice front melts over time, undercutting the ice and weakening the cliff. "But that's not going to go really, really, really fast because you have to wait for the melting to undercut it," he says.

With slumping, the calving occurs without waiting for the melt. "We'll go slump... basal crevasse... boom," he says, noting that when the calving happens it will take the 100 meters of ice above the water -- and the 900 meters below the water -- very quickly.

And 1000 meters of ice calving at once isn't the limit. Alley says that in some places in Antarctica, the glacial ice bed can be 1500 to 2000 meters below sea level, creating a much taller cliff above water. He says the worry is that taller cliffs are even more susceptible to slumping. "The scary thing is that if pieces of west Antarctica start doing what Helheim is doing then over the next hundred years models indicate that we get rapid sea level rise at rates that surpass those predicted," says Alley.

Understanding the slump-break process has been a collaborative effort, Alley says, and more investigations are planned for the near future. "We want to understand what are the rules for [ice] breakage by this process and others," says Alley, adding that they hope to collect more observational data as well as refine their models to better understand the slump-break process. "There's still work to be done."

The research was supported by NASA, the National Science Foundation, and the New York University Abu Dhabi Research Institute.



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