Topic: Oceans


In Japan, a David vs Goliath<br /> Battle to Preserve Bluefin Tuna

Report

In Japan, a David vs Goliath
Battle to Preserve Bluefin Tuna

by winifred bird
A group of small-scale Japanese fishermen are waging an increasingly public struggle against industrial fishing fleets that are using sonar and huge nets to scoop up massive catches of spawning Pacific bluefin tuna.
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Eyes in the Sky: Green Groups <br />Are Harnessing Data from Space

Report

Eyes in the Sky: Green Groups
Are Harnessing Data from Space

by jacques leslie
An increasing number of nonprofit organizations are relying on satellite imagery to monitor environmental degradation. Chief among them is SkyTruth, which has used this data to expose the extent of the BP oil spill, uncover mining damage, and track illegal fishing worldwide.
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Unnatural Balance: How Food <br />Waste Impacts World’s Wildlife

Report

Unnatural Balance: How Food
Waste Impacts World’s Wildlife

by richard conniff
New research indicates that the food discarded in landfills and at sea is having a profound effect on wildlife populations and fisheries. But removing that food waste creates its own ecological challenges.
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The Sushi Project: Farming Fish <br />And Rice in California's Fields

Report

The Sushi Project: Farming Fish
And Rice in California's Fields

by jacques leslie
Innovative projects in California are using flooded rice fields to rear threatened species of Pacific salmon, mimicking the rich floodplains where juvenile salmon once thrived. This technique also shows promise for growing forage fish, which are increasingly threatened in the wild.
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How 'Third Way' Technologies <br />Can Help Turn Tide on Climate

Interview

How 'Third Way' Technologies
Can Help Turn Tide on Climate

by richard schiffman
In a Yale Environment 360 interview, Australian scientist and author Tim Flannery explains how the development of technologies that mimic the earth’s natural carbon-removing processes could provide a critical tool for slowing global warming.
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A Delicate Balance: Protecting <br />Northwest’s Glass Sponge Reefs

Report

A Delicate Balance: Protecting
Northwest’s Glass Sponge Reefs

by nicola jones
Rare and extensive reefs of glass sponges are found only one place on earth – a stretch of the Pacific Northwest coast. Now, efforts are underway to identify and protect these fragile formations before they are obliterated by fishing vessels that trawl the bottom.
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Global Extinction Rates: Why <br />Do Estimates Vary So Wildly?

Analysis

Global Extinction Rates: Why
Do Estimates Vary So Wildly?

by fred pearce
Is it 150 species a day or 24 a day or far less than that? Prominent scientists cite dramatically different numbers when estimating the rate at which species are going extinct. Why is that?
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As Ocean Waters Heat Up, <br />A Quest to Create ‘Super Corals’

Report

As Ocean Waters Heat Up,
A Quest to Create ‘Super Corals’

by nicola jones
With the world’s coral reefs increasingly threatened by warmer and more acidic seas, scientists are selectively breeding corals to create species with the best chance to survive in the coming century and beyond. Are genetically modified corals next?
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Photo Essay

The Wild Alaskan Lands at Stake
If the Pebble Mine Moves Ahead


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On an Unspoiled Caribbean Isle, <br />Grand Plans for Big Tourist Port

Report

On an Unspoiled Caribbean Isle,
Grand Plans for Big Tourist Port

by fred pearce
East Caicos is a tropical jewel – the largest uninhabitated island in the Caribbean and home to rare birds and pristine turtle-nesting beaches. But plans for a giant port for cruise and cargo ships could change it forever.
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A Little Fish with Big Impact <br />In Trouble on U.S. West Coast

Report

A Little Fish with Big Impact
In Trouble on U.S. West Coast

by elizabeth grossman
Scientists are concerned that officials waited too long to order a ban on U.S. Pacific sardine fishing that goes into effect July 1. The dire state of the sardine population is a cautionary tale about overharvesting these and other forage fish that are a critical part of the marine food web.
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Oil Drilling in Arctic Ocean: <br />A Push into Uncharted Waters

Analysis

Oil Drilling in Arctic Ocean:
A Push into Uncharted Waters

by ed struzik
As the U.S. and Russia take the first steps to drill for oil and gas in the Arctic Ocean, experts say the harsh climate, icy seas, and lack of infrastructure means a sizeable oil spill would be very difficult to clean up and could cause extensive environmental damage.
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Can the North Sea Wind Boom <br />And Seabird Colonies Coexist?

Report

Can the North Sea Wind Boom
And Seabird Colonies Coexist?

by fred pearce
Offshore wind farms have been proliferating in the North Sea, with more huge projects planned. But conservationists are concerned this clean energy source could threaten seabird colonies that now thrive in the sea’s shallow waters.
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How Long Can Oceans Continue <br />To Absorb Earth’s Excess Heat?

Analysis

How Long Can Oceans Continue
To Absorb Earth’s Excess Heat?

by cheryl katz
The main reason soaring greenhouse gas emissions have not caused air temperatures to rise more rapidly is that oceans have soaked up much of the heat. But new evidence suggests the oceans’ heat-buffering ability may be weakening.
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With Fins Off Many Menus, <br />A Glimmer of Hope for Sharks

Analysis

With Fins Off Many Menus,
A Glimmer of Hope for Sharks

by ted williams
For decades, the slaughter of sharks – sought after for their fins and meat – has been staggering. But bans on finning and new attitudes in Asia toward eating shark fin soup are leading to optimism about the future for these iconic ocean predators.
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Along Cuba’s Coast, The Last Best <br />Coral Reefs in the Caribbean Thrive

Photo Essay

Along Cuba’s Coast, The Last Best
Coral Reefs in the Caribbean Thrive

Decades of communist rule and a U.S. embargo have stifled coastal development in Cuba, which has had the beneficial effect of leaving many of the country’s coral reefs intact. In this gallery, photographer Robert Wintner documents the exquisite beauty and biodiversity of Cuba’s coral reef ecosystems.
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Why U.S. East Coast Should <br />Stay Off-Limits to Oil Drilling

Opinion

Why U.S. East Coast Should
Stay Off-Limits to Oil Drilling

by carl safina
It’s not just the potential for a catastrophic spill that makes President Obama’s proposal to open Atlantic Ocean waters to oil exploration such a bad idea. What’s worse is the cumulative impact on coastal ecosystems that an active oil industry would bring.
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Interview

Why Ocean Health Is Better
And Worse Than You Think

by fen montaigne
The good news is the world’s oceans have not experienced the extinctions that have occurred on land. But as ecologist Douglas McCauley explains in a Yale Environment 360 interview, marine life now face numerous threats even more serious than overfishing.
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As Extreme Weather Increases, <br />A Push for Advanced Forecasts

Analysis

As Extreme Weather Increases,
A Push for Advanced Forecasts

by cheryl katz
With a warmer atmosphere expected to spur an increase in major storms, floods, and other wild weather events, scientists and meteorologists worldwide are harnessing advanced computing power to devise more accurate, medium-range forecasts that could save lives and property.
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How Technology Is Protecting <br />World’s Richest Marine Reserve

Report

How Technology Is Protecting
World’s Richest Marine Reserve

by christopher pala
After years of fitful starts, the Pacific island nation of Kiribati this month banned all commercial fishing inside its huge marine reserve. New satellite transponder technology is now helping ensure that the ban succeeds in keeping out the big fishing fleets.
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For Vulnerable Barrier Islands, <br />A Rush to Rebuild on U.S. Coast

Report

For Vulnerable Barrier Islands,
A Rush to Rebuild on U.S. Coast

by rona kobell
Despite warnings from scientists, new construction continues on U.S. barrier islands that have been devastated by storms. The flood protection projects that accompany this development can have harmful consequences for coastal ecosystems being buffeted by climate change.
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After Steep Decline, Signs of <br />Hope for World’s Sea Turtles

Report

After Steep Decline, Signs of
Hope for World’s Sea Turtles

by ted williams
Nearly all sea turtle species have been classified as endangered, with precipitous declines in many populations in recent decades. But new protections, particularly in the U.S. and Central America, are demonstrating that dramatic recovery for these remarkable reptiles is possible.
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Fast-Warming Gulf of Maine<br />Offers Hint of Future for Oceans

Report

Fast-Warming Gulf of Maine
Offers Hint of Future for Oceans

by rebecca kessler
The waters off the coast of New England are warming more rapidly than almost any other ocean region on earth. Scientists are now studying the resulting ecosystem changes, and their findings could provide a glimpse of the future for many of the world’s coastal communities.
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Fostering Community Strategies For Saving the World's Oceans

Interview

Fostering Community Strategies For Saving the World's Oceans

by crystal gammon
To conservationist Ayana Elizabeth Johnson, getting coastal communities involved in plans to protect their waters is critical for protecting the planet's oceans. In an interview with Yale Environment 360, she talks about her work in one Caribbean island and how it shows how such a strategy can get results.
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Photo Essay

Cashes Ledge: New England's Underwater Laboratory

A little over 70 miles off the coast of New England, an unusual undersea mountain range, known as Cashes Ledge, rises from the seabed. The area teems with kelp forests, sea sponges, and a wide variety of fish and mollusks — much of it captured by ocean photographer Brian Skerry during dives made earlier this year
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How Norway and Russia Made <br />A Cod Fishery Live and Thrive

Report

How Norway and Russia Made
A Cod Fishery Live and Thrive

by john waldman
The prime cod fishing grounds of North America have been depleted or wiped out by overfishing and poor management. But in Arctic waters, Norway and Russia are working cooperatively to sustain a highly productive — and profitable — cod fishery.
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Scientists Look for Causes of <br />Baffling Die-Off of Sea Stars

Report

Scientists Look for Causes of
Baffling Die-Off of Sea Stars

by eric wagner
Sea stars on both coasts of North America are dying en masse from a disease that kills them in a matter of days. Researchers are looking at various pathogens that may be behind what is known as sea star wasting syndrome, but they suspect that a key contributing factor is warming ocean waters.
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Interview

Where Will Earth Head
After Its ‘Climate Departure’?

by diane toomey
Will the planet reach a point where its climate is significantly different from what has existed throughout human history, and if so, when? In an interview with Yale Environment 360, biogeographer Camilo Mora talks about recent research on this disquieting issue and what it means for the coming decades.
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Interview

Examining How Marine Life
Might Adapt to Acidified Oceans

by elizabeth grossman
In an interview with Yale Environment 360, marine biologist Gretchen Hofmann discusses how well mollusks and other shell-building organisms might evolve to live in increasingly corrosive ocean conditions caused by soaring CO2 emissions.
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Unsustainable Seafood: A New <br />Crackdown on Illegal Fishing

Report

Unsustainable Seafood: A New
Crackdown on Illegal Fishing

by richard conniff
A recent study shows that a surprisingly large amount of the seafood sold in U.S. markets is caught illegally. In a series of actions over the last few months, governments and international regulators have started taking aim at stopping this illicit trade in contraband fish.
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Scientists Focus on Polar Waters <br />As Threat of Acidification Grows

Report

Scientists Focus on Polar Waters
As Threat of Acidification Grows

by jo chandler
A sophisticated and challenging experiment in Antarctica is the latest effort to study ocean acidification in the polar regions, where frigid waters are expected to feel most acutely the ecological impacts of acidic conditions not seen in millions of years.
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Greenpeace’s Kumi Naidoo on <br />Russia and the Climate Struggle

Interview

Greenpeace’s Kumi Naidoo on
Russia and the Climate Struggle

by diane toomey
In a Yale Environment 360 interview, the outspoken executive director of Greenpeace discusses why his organization’s activists braved imprisonment in Russia to stop Arctic oil drilling and what needs to be done to make a sharp turn away from fossil fuels and toward a green energy economy.
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Documenting the Swift Change <br />Wrought by Global Warming

Photo Essay

Documenting the Swift Change
Wrought by Global Warming

by peter essick
Photographer Peter Essick has traveled the world documenting the causes and consequences of climate change. In a Yale Environment 360 photo essay, we present a gallery of images Essick took while on assignment in Antarctica, Greenland, and other far-flung locales.
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A North Atlantic Mystery: <br />Case of the Missing Whales

Report

A North Atlantic Mystery:
Case of the Missing Whales

by rebecca kessler
Endangered North Atlantic right whales are disappearing from customary feeding grounds off the U.S. and Canadian coasts and appearing in large numbers in other locations, leaving scientists to wonder if shifts in climate may be behind the changes.
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Using Ocean Robots to Unlock <br />Mysteries of CO2 and the Seas

Interview

Using Ocean Robots to Unlock
Mysteries of CO2 and the Seas

by todd woody
Marine phytoplankton are vital in absorbing ever-increasing amounts of CO2 from the atmosphere. In a Yale Environment 360 interview, researcher Tracy Villareal explains how he is using remotely operated robots to better understand how this process mitigates climate change.
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A Year After Sandy, The Wrong <br />Policy on Rebuilding the Coast

Opinion

A Year After Sandy, The Wrong
Policy on Rebuilding the Coast

by rob young
One year after Hurricane Sandy devastated parts of the U.S. East Coast, the government is spending billions to replenish beaches that will only be swallowed again by rising seas and future storms. It’s time to develop coastal policies that take into account new climate realities.
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Rising Waters: How Fast and <br />How Far Will Sea Levels Rise?

Analysis

Rising Waters: How Fast and
How Far Will Sea Levels Rise?

by nicola jones
Although the latest U.N. climate report significantly increases its projections for sea level rise this century, some scientists warn even those estimates are overly conservative. But one thing is certain: Predicting sea level rise far into the future is a very tricky task.
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In Japan, Captive Breeding <br />May Help Save the Wild Eel

Report

In Japan, Captive Breeding
May Help Save the Wild Eel

by winifred bird
As eel populations plummet worldwide, Japanese scientists are racing to solve a major challenge for aquaculture — how to replicate the life cycle of eels in captivity and commercially produce a fish that is a prized delicacy on Asian dinner tables.
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Leaving Our Descendants<br /> A Whopping Rise in Sea Levels

Interview

Leaving Our Descendants
A Whopping Rise in Sea Levels

by fen montaigne
German scientist Anders Levermann and his colleagues have released research that warns of major sea level increases far into the future. In an interview with Yale Environment 360, he raises important questions about how much we really care about the world we will leave to those who come after us.
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In Mekong Delta, Rice Boom<br /> Has Steep Environmental Cost

Report

In Mekong Delta, Rice Boom
Has Steep Environmental Cost

by mike ives
Vietnam has become one of the world’s leading rice producers, thanks to the construction of an elaborate network of dikes and irrigation canals. But these extensive infrastructure projects in the storied Mekong Delta have come at a high ecological price.
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New Initiatives to Clean Up<br /> The Global Aquarium Trade

Report

New Initiatives to Clean Up
The Global Aquarium Trade

by rebecca kessler
An estimated 30 million fish and other creatures are caught annually to supply the home aquarium market, taking a toll on some reef ecosystems. Now conservationists are working to improve the industry by ending destructive practices and encouraging aquaculture.
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No Refuge: Tons of Trash Covers<br /> The Remote Shores of Alaska

Opinion

No Refuge: Tons of Trash Covers
The Remote Shores of Alaska

by carl safina
A marine biologist traveled to southwestern Alaska in search of ocean trash that had washed up along a magnificent coast rich in fish, birds, and other wildlife. He and his colleagues found plenty of trash – as much as a ton of garbage per mile on some beaches.
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An Economic Boom in Turkey<br /> Takes a Toll on Marine Life

Report

An Economic Boom in Turkey
Takes a Toll on Marine Life

by sulmaan khan
The development-at-any-cost policies of Turkish Prime Minister Recip Tayyip Erdogan — a key factor behind the protests and clashes in Istanbul’s Taksim Square — are also playing a role in the steady decline of the nation’s porpoises, dolphins, and other marine life.
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As Extreme Weather Increases,<br /> Bangladesh Braces for the Worst

Opinion

As Extreme Weather Increases,
Bangladesh Braces for the Worst

by brian fagan
Scientists are predicting that warming conditions will bring more frequent and more intense extreme weather events. Their warnings hit home in densely populated Bangladesh, which historically has been hit by devastating sea surges and cyclones.
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China’s New Arctic Presence<br /> Signals Future Development

Report

China’s New Arctic Presence
Signals Future Development

by ed struzik
China’s recent admission to the Arctic Council under observer status reflects a new reality: the world’s economic powers now regard development of natural resources and commerce in an increasingly ice-free Arctic as a top priority.
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In Post-Tsunami Japan, A Push<br /> To Rebuild Coast in Concrete

Report

In Post-Tsunami Japan, A Push
To Rebuild Coast in Concrete

by winifred bird
In the wake of the 2011 tsunami, the Japanese government is forgoing an opportunity to sustainably protect its coastline and is instead building towering concrete seawalls and other defenses that environmentalists say will inflict serious damage on coastal ecosystems.
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A Key Experiment to Probe the<br /> Future of Our Acidifying Oceans

Report

A Key Experiment to Probe the
Future of Our Acidifying Oceans

by peter friederici
In a Swedish fjord, European researchers are conducting an ambitious experiment aimed at better understanding how ocean acidification will affect marine life. Ultimately, these scientists hope to determine which species might win and which might lose in a more acidic ocean.
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As Final U.S. Decision Nears,<br /> A Lively Debate on GM Salmon

Opinion

As Final U.S. Decision Nears,
A Lively Debate on GM Salmon

In an online debate for Yale Environment 360, Elliot Entis, whose company has created a genetically modified salmon that may soon be for sale in the U.S., discusses the environmental and health impacts of this controversial technology with author Paul Greenberg, a critic of GM fish.
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A Leading Marine Biologist<br /> Works to Create a ‘Wired Ocean’

Interview

A Leading Marine Biologist
Works to Create a ‘Wired Ocean’

by ben goldfarb
Stanford University scientist Barbara Block heads a program that has placed satellite tags on thousands of sharks, bluefin tuna, and other marine predators to better understand their life cycles. Now, using data available on mobile devices, she hopes to enlist public support for protecting these threatened creatures.
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Will Reform Finally End The<br /> Plunder of Europe’s Fisheries?

Analysis

Will Reform Finally End The
Plunder of Europe’s Fisheries?

by christian schwägerl
Maria Damanaki, Europe’s crusading fisheries minister, is making major headway in changing a cozy, “old boys” network that over-subsidized the European fishing industry and brought about the severe overfishing of the continent’s marine bounty.
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To Control Floods, The Dutch<br /> Turn to Nature for Inspiration

Report

To Control Floods, The Dutch
Turn to Nature for Inspiration

by cheryl katz
The Netherlands’ system of dikes and sea gates has long been the best in the world. But as the country confronts the challenges of climate change, it is increasingly relying on techniques that mimic natural systems and harness nature’s power to hold back the sea.
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Proposed Energy Exploration<br /> Sparks Worry on Ocean Canyons

Report

Proposed Energy Exploration
Sparks Worry on Ocean Canyons

by paul greenberg
The Atlantic Canyons off the Northeastern U.S. plunge as deep as 15,000 feet and harbor diverse and fragile marine ecosystems. Now, the Obama administration’s plans to consider offshore oil and gas exploration in the canyons is troubling conservationists.
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Hurricane Sandy Relief Bill<br /> Fails to Face Coastal Realities

Opinion

Hurricane Sandy Relief Bill
Fails to Face Coastal Realities

by rob young
As part of the sorely-needed aid package to help victims of Hurricane Sandy, Congress is also considering spending billions on ill-advised and environmentally damaging beach and coastal rebuilding projects that ignore the looming threats of rising seas and intensifying storms.
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What’s Damaging Marshes on<br /> U.S. Coast and Why It Matters

Interview

What’s Damaging Marshes on
U.S. Coast and Why It Matters

by kevin dennehy
A nine-year study led by researcher Linda Deegan points to the damage that human-caused nutrients inflict on salt marshes along the U.S. East Coast. In a Yale Environment 360 interview, she describes what these findings mean for an ecosystem that provides critical services, from nourishing marine life to buffering the coast from storms like Sandy.
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Too Big to Flood? Megacities<br /> Face Future of Major Storm Risk

Report

Too Big to Flood? Megacities
Face Future of Major Storm Risk

by bruce stutz
As economic activity and populations continue to expand in coastal urban areas, particularly in Asia, hundreds of trillions of dollars of infrastructure, industrial and office buildings, and homes are increasingly at risk from intensifying storms and rising sea levels.
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How Fishing Gear is Killing<br /> Whales in the North Atlantic

Report

How Fishing Gear is Killing
Whales in the North Atlantic

by rebecca kessler
Researchers have been documenting the deadly threat that fishing lines and ropes pose to large whales that become entangled in them. Now, new studies are pointing to another disturbing fact: the ensnared whales endure enormous pain and prolonged suffering.
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Easing The Collateral Damage<br /> That Fisheries Inflict on Seabirds

Report

Easing The Collateral Damage
That Fisheries Inflict on Seabirds

by jeremy hance
Two recent studies highlight the harm that industrial fisheries are doing to the world’s seabirds, either by overharvesting the birds’ favorite prey or by drowning birds hooked on longlines. But tighter regulations and innovative technologies are starting to significantly reduce seabird “bycatch,” slashing it by 90 percent in some regions.
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Shrimp Farms’ Tainted Legacy<br /> Is Target of Certification Drive

Report

Shrimp Farms’ Tainted Legacy
Is Target of Certification Drive

by marc gunther
As shrimp aquaculture has boomed globally to keep pace with surging demand, the environmental toll on mangroves and other coastal ecosystems has been severe. Now, conservation groups and some shrimp farmers are creating a certification scheme designed to clean up the industry and reward sustainable producers.
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Will Fish-Loving Japan <br />Embrace Sustainable Seafood?

Report

Will Fish-Loving Japan
Embrace Sustainable Seafood?

by winifred bird
In fish-crazed Japan, where eating seafood is a vital part of the nation's culture, conservation groups are working with companies to persuade more Japanese to eat certified, sustainably caught seafood. It's an uphill struggle, but one that could have significant impact on the world's fisheries.
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The Vital Chain: Connecting<br /> The Ecosystems of Land and Sea

Analysis

The Vital Chain: Connecting
The Ecosystems of Land and Sea

by carl zimmer
A new study from a Pacific atoll reveals the links between native trees, bird guano, and the giant manta rays that live off the coast. In unraveling this intricate web, the researchers point to the often little-understood interconnectedness between terrestrial and marine ecosystems.
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Melting Sea Ice Could Lead<br /> To Pressure on Arctic Fishery

Report

Melting Sea Ice Could Lead
To Pressure on Arctic Fishery

by ed struzik
With melting sea ice opening up previously inaccessible parts of the Arctic Ocean, the fishing industry sees a potential bonanza. But some scientists and government officials have begun calling for a moratorium on fishing in the region until the true state of the Arctic fishery is assessed.
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In Fight to Save Coral Reefs,<br /> Finding Strategies that Work

Interview

In Fight to Save Coral Reefs,
Finding Strategies that Work

by kevin dennehy
In four decades as a marine biologist, Nancy Knowlton has played a key role in documenting the biodiversity of coral reefs and the threats they increasingly face. In an interview with Yale Environment 360, she assesses the state of the world’s corals and highlights conservation projects that offer hope of saving these irreplaceable ecosystems.
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Mysteries of Killer Whales<br /> Uncovered in the Antarctic

Dispatch

Mysteries of Killer Whales
Uncovered in the Antarctic

by fen montaigne
Two of the world’s leading experts on the world’s top marine predator are now in Antarctica, tagging and photographing a creature whose remarkably cooperative hunting behavior and transmission of knowledge across generations may be rivaled only by humans.
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Northwest Oyster Die-offs Show<br /> Ocean Acidification Has Arrived

Report

Northwest Oyster Die-offs Show
Ocean Acidification Has Arrived

by elizabeth grossman
The acidification of the world’s oceans from an excess of CO2 has already begun, as evidenced recently by the widespread mortality of oyster larvae in the Pacific Northwest. Scientists say this is just a harbinger of things to come if greenhouse gas emissions continue to soar.
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A World Centered on Sea Ice<br /> Is Changing Swiftly at the Poles

Analysis

A World Centered on Sea Ice
Is Changing Swiftly at the Poles

by fen montaigne
For eons, the polar marine food chain has been closely linked to the seasonal formation and retreat of sea ice. Now, as that ice rapidly melts in the Arctic and along the Antarctic Peninsula, this intricate web of life is undergoing major shifts, benefiting some creatures and putting others at risk.
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New Model for Aquaculture<br /> Takes Hold Far from the Sea

Interview

New Model for Aquaculture
Takes Hold Far from the Sea

With ever-greater quantities of seafood coming from aquaculture operations, some companies are working on ways to reduce the environmental impact of fish farming. In an interview with Yale Environment 360, Josh Goldman of Australis Aquaculture talks about his highly praised closed-containment fish farm in Massachusetts.
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The Unfulfilled Promise of the<br /> World’s Marine Protected Areas

Analysis

The Unfulfilled Promise of the
World’s Marine Protected Areas

by bruce barcott
Biologists and conservationists maintain that establishing marine reserves — areas where fishing is off-limits or severely restricted — offers the best hope for recovery for our overstressed oceans. So why is such a small area of the world's oceans protected?
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As Arctic Sea Ice Retreats,<br /> Storms Take Toll on the Land

Report

As Arctic Sea Ice Retreats,
Storms Take Toll on the Land

by ed struzik
For millennia, the blanket of ice covering the Arctic Ocean protected the shore from damaging storms. But as that ice buffer disappears, increasingly powerful storm surges are eroding the coastline and sending walls of seawater inland, devastating Arctic ecosystems that support abundant wildlife.
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One Year Later: Assessing the<br /> Lasting Impact of the Gulf Spill

Opinion

One Year Later: Assessing the
Lasting Impact of the Gulf Spill

by carl safina
On the anniversary of the Deepwater Horizon explosion, the worst fears about the long-term damage from the oil spill have not been realized. But the big challenge is more fundamental: repairing the harm from the dams, levees, and canals that are devastating the Mississippi Delta and the Louisiana coast.
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After the Great Quake,<br /> Living with Earth’s Uncertainty

Essay

After the Great Quake,
Living with Earth’s Uncertainty

by verlyn klinkenborg
The Japanese earthquake and tsunami remind us that we exist in geologic time and in a world where catastrophic events beyond our predicting may occur. These events — and the growing specter of climate change — show how precariously we exist on the surface of a volatile planet.
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Tracking the Destructive Power<br /> Of the Pacific Ocean’s Tsunamis

Interview

Tracking the Destructive Power
Of the Pacific Ocean’s Tsunamis

The devastating tsunami in northeastern Japan is only one of many that have battered Japan over the eons. In an interview with Yale Environment 360, tsunami and earthquake expert Lori Dengler describes the historic and paleological record of tsunamis across the Pacific, and what it may mean in the future for Japan and the western United States.
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Deep-Sea Mining is Coming:<br /> Assessing the Potential Impacts

Interview

Deep-Sea Mining is Coming:
Assessing the Potential Impacts

by erica westly
Numerous companies are moving ahead rapidly with plans to mine copper, gold, and other minerals near hydrothermal vents on the ocean floor. But in an interview with Yale Environment 360, marine biologist Cindy Lee Van Dover warns that without environmental safeguards the unique ecosystems of deep-sea vents could be severely damaged.
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How Fisheries Can Gain From<br /> The Lessons of Sustainable Food

Opinion

How Fisheries Can Gain From
The Lessons of Sustainable Food

by john waldman
As agriculture and energy production have made strides toward becoming more sustainable, the world’s fisheries have lagged behind. But restoring our beleaguered oceans to health will require an emphasis on diversification and conservation — and a more sensible mix of fishing practices.
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In Novel Approach to Fisheries, <br />Fishermen Manage the Catch

Report

In Novel Approach to Fisheries,
Fishermen Manage the Catch

by bruce barcott
An increasingly productive way of restoring fisheries is based on the counter-intuitive concept of allowing fishermen to take charge of their own catch. But the success of this growing movement depends heavily on a strong leader who will look out not only for the fishermen, but for the resource itself.
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Massive Outbreak of Jellyfish<br /> Could Spell Trouble for Fisheries

Report

Massive Outbreak of Jellyfish
Could Spell Trouble for Fisheries

by richard stone
The world’s oceans have been experiencing enormous blooms of jellyfish, apparently caused by overfishing, declining water quality, and rising sea temperatures. Now, scientists are trying to determine if these outbreaks could represent a “new normal” in which jellyfish increasingly supplant fish.
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Is the End in Sight for<br /> The World’s Coral Reefs?

Analysis

Is the End in Sight for
The World’s Coral Reefs?

by j.e.n. veron
It is a difficult idea to fathom. But the science is clear: Unless we change the way we live, the Earth's coral reefs will be utterly destroyed within our children's lifetimes.
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Hatch-22: The Problem with<br /> The Pacific Salmon Resurgence

Report

Hatch-22: The Problem with
The Pacific Salmon Resurgence

by bruce barcott
The number of salmon in the Pacific Ocean is twice what it was 50 years ago. But there is a downside to this bounty, as growing numbers of hatchery-produced salmon are flooding the Pacific and making it hard for threatened wild salmon species to find enough food to survive.
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Exploring the Links Between<br /> Hurricanes and Ocean Warming

Interview

Exploring the Links Between
Hurricanes and Ocean Warming

One of the more contentious issues facing climate scientists is whether rising ocean temperatures will cause more frequent and powerful hurricanes. In an interview with Yale Environment 360, Kerry Emanuel, of the Massachusetts Institute of Technology, says that amid the uncertainty, one thing seems likely: an increase in the most potent — and destructive — storms.
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A Steady, Steep Decline for<br /> The Lowly, Uncharismatic Eel

Report

A Steady, Steep Decline for
The Lowly, Uncharismatic Eel

by james prosek
The freshwater eel, which spawns in the middle of the ocean, was once abundant in much of the world. But the proliferation of dams, coastal development, and overfishing have drastically reduced eel populations, with few defenders coming to the aid of these fascinating — though still not fully understood — creatures.
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The Legacy of the Gulf Spill:<br /> What to Expect for the Future?

Report

The Legacy of the Gulf Spill:
What to Expect for the Future?

by john mcquaid
The Gulf of Mexico’s capacity to recover from previous environmental assaults — especially the 1979 Ixtoc explosion — provides encouragement about the prospects for its post-Deepwater future. But scientists remain worried about the BP spill's long-term effects on the health of the Gulf and its sea life.
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A Looming Oxygen Crisis and<br /> Its Impact on World’s Oceans

Analysis

A Looming Oxygen Crisis and
Its Impact on World’s Oceans

by carl zimmer
As warming intensifies, scientists warn, the oxygen content of oceans across the planet could be more and more diminished, with serious consequences for the future of fish and other sea life.
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High Above the Earth,<br /> Satellites Track Melting Ice

Report

High Above the Earth,
Satellites Track Melting Ice

by michael d. lemonick
The surest sign of a warming Earth is the steady melting of its ice zones, from disappearing sea ice in the Arctic to shrinking glaciers worldwide. Now, scientists are using increasingly sophisticated satellite technology to measure the extent, thickness, and height of ice, assembling an essential picture of a planet in transition.
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As the Far North Melts,<br /> Calls Grow for Arctic Treaty

Analysis

As the Far North Melts,
Calls Grow for Arctic Treaty

by ed struzik
The massive oil spill in the Gulf of Mexico is a warning, conservationists say, of what could happen in the Arctic as melting sea ice opens the Arctic Ocean to oil and gas drilling. Many experts argue that the time has come to adopt an Arctic Treaty similar to the one that has safeguarded Antarctica for half a century.
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The Oil Spill’s Growing Toll<br /> On Sea Life in the Gulf of Mexico

Interview

The Oil Spill’s Growing Toll
On Sea Life in the Gulf of Mexico

by david biello
A prominent marine biologist says the impacts of the oil gushing into the Gulf of Mexico will persist for years, no matter when the flow finally stops. What’s more, scientist Thomas Shirley says that most of the damage remains out of sight below the surface, as creatures succumb to the toxic effects of the rapidly spreading tide of oil.
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Under Pressure to Block Oil,<br /> A Rush To Dubious Projects

Opinion

Under Pressure to Block Oil,
A Rush To Dubious Projects

by rob young
In response to the widening disaster in the Gulf of Mexico, government officials have approved a plan to intercept the oil by building a 45-mile sand berm. But scientists fear the project is a costly boondoggle that will inflict further environmental damage and do little to keep oil off the coast.
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The Microbe Factor and <br />Its Role in Our Climate Future

Analysis

The Microbe Factor and
Its Role in Our Climate Future

by carl zimmer
Within the planet’s oceans and soils are trillions of bacteria that store and release far more carbon dioxide than all of the Earth’s trees and plants. Now, scientists are attempting to understand how the world’s bacteria will influence — and be influenced by — a warming climate.
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Anatomy of the BP Oil Spill:<br /> An Accident Waiting to Happen

Analysis

Anatomy of the BP Oil Spill:
An Accident Waiting to Happen

by john mcquaid
The oil slick spreading across the Gulf of Mexico has shattered the notion that offshore drilling had become safe. A close look at the accident shows that lax federal oversight, complacency by BP and the other companies involved, and the complexities of drilling a mile deep all combined to create the perfect environmental storm.
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After Two Decades of Delay,<br /> A Chance to Save Bluefin Tuna

Opinion

After Two Decades of Delay,
A Chance to Save Bluefin Tuna

by carl safina
The obscenely profitable market for bluefin tuna in Japan has led to years of overfishing and left the world’s bluefin population badly depleted. A ban on the bluefin trade, if adopted at international talks this month, would go a long way toward giving this magnificent fish a chance to recover.
READ MORE

An Ominous Warning on the<br />  Effects of Ocean Acidification

Analysis

An Ominous Warning on the
Effects of Ocean Acidification

by carl zimmer
A new study says the seas are acidifying ten times faster today than 55 million years ago when a mass extinction of marine species occurred. And, the study concludes, current changes in ocean chemistry due to the burning of fossil fuels may portend a new wave of die-offs.
READ MORE

How High Will Seas Rise?<br /> Get Ready for Seven Feet

Opinion

How High Will Seas Rise?
Get Ready for Seven Feet

by rob young and orrin pilkey
As governments, businesses, and homeowners plan for the future, they should assume that the world’s oceans will rise by at least two meters — roughly seven feet — this century. But far too few agencies or individuals are preparing for the inevitable increase in sea level that will take place as polar ice sheets melt.
READ MORE

In Search of New Waters,<br /> Fish Farming Moves Offshore

Report

In Search of New Waters,
Fish Farming Moves Offshore

by john mcquaid
As wild fish stocks continue to dwindle, aquaculture is becoming an increasingly important source of protein worldwide. Now, a growing number of entrepreneurs are raising fish in large pens in the open ocean, hoping to avoid the many environmental problems of coastal fish farms.
READ MORE

The Nitrogen Fix:<br /> Breaking a Costly Addiction

Analysis

The Nitrogen Fix:
Breaking a Costly Addiction

by fred pearce
Over the last century, the intensive use of chemical fertilizers has saturated the Earth’s soils and waters with nitrogen. Now scientists are warning that we must move quickly to revolutionize agricultural systems and greatly reduce the amount of nitrogen we put into the planet's ecosystems.
READ MORE

A Total Ban on Whaling?<br /> New Studies May Hold the Key

Opinion

A Total Ban on Whaling?
New Studies May Hold the Key

by fred pearce
As the International Whaling Commission debates whether to ban all whaling or to expand the limited hunts now underway, recent research has convinced some scientists that the world’s largest mammal should never be hunted again.
READ MORE

NOAA’s New Chief on Restoring<br /> Science to U.S. Climate Policy

Interview

NOAA’s New Chief on Restoring
Science to U.S. Climate Policy

by elizabeth kolbert
Marine biologist Jane Lubchenco now heads one of the U.S. government’s key agencies researching climate change — the National Oceanic and Atmospheric Administration. In an interview with Yale Environment 360, Lubchenco discusses the central role her agency is playing in understanding the twin threats of global warming and ocean acidification.
READ MORE

Twenty Years Later, Impacts<br />  of the Exxon Valdez Linger

Report

Twenty Years Later, Impacts
of the Exxon Valdez Linger

by doug struck
Two decades after the Exxon Valdez spilled 11 million gallons of crude oil into Alaska’s waters, the Prince William Sound, its fishermen, and its wildlife have still not fully recovered.
READ MORE

Opinion

A Call for Tougher Standards
on Mercury Levels in Fish

by jane hightower
In response to industry pressure, the U.S. Food and Drug Administration has failed to set adequate restrictions on mercury levels in fish. Now the Obama administration must move forcefully to tighten those standards and warn the public which fish are less safe to eat.
READ MORE

Regulators Are Pushing<br /> Bluefin Tuna to the Brink

Opinion

Regulators Are Pushing
Bluefin Tuna to the Brink

by carl safina
The international commission charged with protecting the giant bluefin tuna is once again failing to do its job. Its recent decision to ignore scientists’ recommendations for reducing catch limits may spell doom for this magnificent – and endangered – fish.
READ MORE

A Corporate Approach to <br />Rescuing the World’s Fisheries

Report

A Corporate Approach to
Rescuing the World’s Fisheries

by nicholas day
The commitment by Wal-Mart, McDonald’s, and other major companies to buy only sustainably-caught seafood is an encouraging sign in an otherwise bleak global fisheries picture. After decades of government inaction and ineffective consumer campaigns, corporate pressure may finally be starting to turn the tide on reckless overfishing.
READ MORE

Alaska’s Pebble Mine:<br /> Fish Versus Gold

Report

Alaska’s Pebble Mine:
Fish Versus Gold

by bill sherwonit
With the support of Gov. Sarah Palin, mining interests have defeated an Alaska ballot measure that could have blocked a huge proposed mining project. Now, plans are moving forward to exploit the massive gold and copper deposit at Bristol Bay, home of one of the world’s greatest salmon runs.
READ MORE

The Arctic Resource Rush is On

Report

The Arctic Resource Rush is On

by ed struzik
As the Arctic's sea ice melts, energy and mining companies are moving into previously inaccessible regions to tap the abundant riches that lie beneath the permafrost and the ocean floor. The potential environmental impacts are troubling.
READ MORE

Analysis

Carbon’s Burden on the World’s Oceans

by carl safina and marah j. hardt
The burgeoning amount of carbon dioxide in oceans is affecting a lot more than coral reefs. It is also damaging marine life and, most ominously, threatening the future survival of marine populations.
READ MORE

e360 digest

RELATED e360 DIGEST ITEMS


05 Feb 2016: Rising Temperatures Skewing
Gender Balance of Sea Turtles, Study Says

Rising global temperatures may be skewing the gender makeup of marine turtles, according to

Loggerhead sea turtle
new research from Florida State University. The gender of marine hatchlings is influenced by the temperature of the sands in which they incubate, with warmer temperatures producing more females. “It's worrying that you could have an extreme skew in gender one way," said Mariana Fuentes, an assistant professor of oceanography at FSU. "Any changes in population structure can have real repercussions.” The scientists examined 25 years worth of data for 21 loggerhead turtle nesting beaches along the Brazilian coast, but the results are pertinent to other regions since temperature-dependent sex determination affects all turtles.
PERMALINK

 

01 Feb 2016: Lab-raised Caribbean Coral
Grown in the Wild for the First Time

Caribbean coral colonies bred in a lab, using in-vitro fertilization, have for the first time been raised to sexual maturity in their

Elkhorn coral
natural marine habitat, according to findings published in the Bulletin of Marine Science. Offspring of endangered elkhorn coral were reared from gametes collected in the field and successfully reattached to a reef a year later, where they have grown in size considerably according to researchers from SECORE International. Over the past four decades, an estimated 80 percent of all Caribbean corals have disappeared. The elkhorn coral’s decline is so severe that it was the first coral species to be listed as threatened under the U.S. Endangered Species Act in 2006. Due to its large size, branching shape, and preference for shallow waters, the coral is particularly effective at protecting shorelines from incoming storms, as well as providing a critical habitat for many reef organisms. Scientists hope this success will be an important step in helping restore endangered reefs.
PERMALINK

 

19 Jan 2016: Ocean Absorption of Manmade
Heat Doubles Since 1997, Study Says

The amount of manmade heat absorbed by the world’s oceans has doubled since 1997, according to a study

Carbon dioxide in the atmosphere
released yesterday in the journal Nature Climate Change. Scientists have long known that the oceans absorb more than 90 percent of manmade heat, but the study’s figures give a new and more accurate accounting for that process over a period of 150 years. According to the study, the oceans absorbed 150 zettajoules of energy between 1865 and 1997 — and an additional 150 zettajoules in just the past 18 years. “The changes we’re talking about, they are really, really big numbers,” said co-author Paul Durack, an oceanographer at the Lawrence Livermore National Lab in California. “They are nonhuman numbers.” Put in perspective, the amount of energy absorbed by the oceans since 1997 is the equivalent to a Hiroshima-sized bomb being exploded every second for 75 years.
PERMALINK

 

15 Jan 2016: Northeast U.S. Waters Warming
Faster than Previously Thought, NOAA says

The ocean waters off the Northeastern United States may get even warmer, and this warming may occur twice as quickly as previously thought,

The Gulf of Maine is warming rapidly
according to a new study by researchers for the National Oceanic and Atmospheric Administration. The findings, based on four global climate models, suggest that ocean temperatures in that region will rise three times faster than the global average. “Prior climate change projections for the region may be far too conservative,” said Vincent Saba, a NOAA fisheries scientist and lead author of the study. The Gulf of Maine has warmed faster than nearly 100 percent of the world’s oceans, likely due to a northerly shift in the Gulf Stream. Scientists have been studying the warming’s impact on the area’s marine ecosystem.
PERMALINK

 

14 Jan 2016: Europe’s Remaining Orcas
Threatened by Banned Toxins, Study Finds

Orcas and other dolphins living in European waters are facing a severe threat from lingering toxic chemicals that have been banned for decades,

NOAA
Two orcas ply the waters
according to a study led by the Zoological Society of London and published in the journal Scientific Reports. The research, which was based on long-term studies of more than 1,000 biopsied whales, dolphins, and porpoises in European waters, found that the blubber of these cetaceans contain some of the highest concentrations of polychlorinated biphenyls (PCBs) in the world. Without much stronger restrictions, "PCBs will continue to drive population declines or suppress population recovery in Europe for many decades to come," the study’s authors wrote. PCBs are a group of man-made chemicals previously used in the manufacture of electrical equipment, flame-retardants, and paints.
PERMALINK

 

08 Jan 2016: Study suggests most nitrogen
found in oceans comes from natural sources

The world’s oceans are less affected by human activities then previously suggested by atmospheric models when it comes to increased

Graph of various nitrogen sources found in oceans
nitrogen levels, according to a new study published in Proceedings of the National Academy of Sciences. The majority of nitrogen found in the oceans comes from the oceans themselves instead of human pollution blown off shore, which contradicts most models, the researchers say. That’s both good news and bad news. On the plus side, “People may not be polluting the ocean as much as we thought,” says Meredith Hastings, associate professor at Brown University, one of the study’s co-authors. Excess nitrogen can throw aquatic ecosystems out of balance and lead to large algal blooms that can be deadly for sea creatures. However, nitrogen also stimulates the growth of phytoplankton, which increases the oceans’ ability to absorb carbon dioxide from the atmosphere, thus mitigating carbon emissions to some extent.
PERMALINK

 

18 Dec 2015: Marshes Likely More Resilient
To Sea Level Rise Than Thought, Study Says

Marshes may be more resilient to climate change and associated rises in sea level than previously thought, according to recent research

An aerial view of Venice showing elevation by color
published in the Proceedings of the National Academy of Sciences. The study shows that as levels of atmospheric carbon dioxide increase, more CO2 gets taken in by marsh plants. This spurs higher rates of photosynthesis and plant growth, causing marsh plants to trap more sediment above ground and generate more organic soil below ground, the researchers explain. The process can increase the rate of soil accretion nearly enough to allow marshes to keep up with rising sea levels. In fact, the researchers say, it may increase a marsh's threshold for water inundation by up to 60 percent. "Essentially, we found it's a self-rising mechanism marshes use to build themselves up," said Marco Marani, a researcher at Duke University who helped conduct the study.
PERMALINK

 

14 Dec 2015: Accelerating Rock Weathering
Could Help Reduce Atmospheric CO2 Levels

Speeding up the naturally occurring process of weathering rocks to draw carbon dioxide out of the atmosphere could help to

Weathered limestone cliffs in Yorkshire, England
stabilize the climate and avert ocean acidification caused by greenhouse gas emissions, according to research published in the journal Nature Climate Change. As rainwater and other environmental conditions naturally break down rocks on the earth's surface, carbon dioxide is drawn from the atmosphere. The process converts CO2 to bicarbonate, a mineral that chemically binds CO2 and is washed away through rivers to the oceans. By modeling the large-scale effects of weathering — which is driven largely by precipitation, vegetation, and soil microbes — the researchers found methods for accelerating this CO2-removal system. Such a strategy could significantly counteract anthropogenic fossil fuel emissions, they say, slowing ocean acidification and protecting delicate ocean ecosystems such as coral reefs.
PERMALINK

 

13 Nov 2015: Sharks Will Likely Be Less
Effective Hunters With Climate Change

Sharks will likely become much smaller and less aggressive hunters under the rising CO2 levels and warming oceans associated

Port Jackson sharks are bottom-dwellers.
with climate change, according to a study published in Scientific Reports by University of Adelaide researchers. In large-tank laboratory experiments with Port Jackson sharks — a bottom-feeding variety that primarily relies on smell to find food — the researchers found that the combination of warmer water and high CO2 increased the sharks' energy requirements and reduced their metabolic efficiency. Elevated CO2 levels also dulled the sharks' sense of smell to the point that they were unable to locate prey — a finding confirmed in previous CO2/olfaction studies. Together, these effects led to dramatic reductions in the sharks' growth rates. "With a reduced ability to hunt, sharks will no longer be able to exert the same top-down control over the marine food webs, which is essential for maintaining healthy ocean ecosystems," said lead researcher Ivan Nagelkerken.
PERMALINK

 

04 Nov 2015: New York State Warns
To Prepare for up to 6 Feet of Sea Level Rise

New York State is telling developers and homeowners in New York City and coastal towns that they should prepare for up to 75 inches of sea level rise by 2100. The sea level rise projections, based on recent scientific studies by NASA and Columbia University, are part of the New York Community Risk and Resiliency Act passed after the devastation caused by Hurricane Sandy in 2012. The state says it is creating new sea level rise regulations requiring coastal planners, developers, and builders to expect seas that could rise up to six feet and to build more resilient homes and other structures. New York officials said 500,000 people live in areas that lie less than six feet above the mean high tide line in the state. The studies took into account increased melting of ice sheets and glaciers in Greenland and Antarctica.
PERMALINK

 

26 Oct 2015: Major Clue Emerges in Mystery
Of Right Whale Deaths, Researchers Say

Endangered right whales, especially young calves of the southern population, have been having a hard time in recent years, and

Southern right whale and calf near Peninsula Valdes
scientists haven't been able to determine why. For example, the average number of right whale deaths per year at Peninsula Valdes, a breeding ground off central Argentina's Atlantic coast, jumped more than 10-fold from 2005 to 2014 — from fewer than six per year to 65 per year, researchers say. Roughly 90 percent of the deaths were calves fewer than three months old. Now researchers have closed in on a suspect: blooms of a type of algae known as Pseudonitschia, which produce harmful neurotoxins, the researchers write in the journal Marine Mammal Science. Scientists from the United States and Argentina found that the number of whale deaths at the peninsula closely tracked the concentrations of the toxic algae, offering strong circumstantial evidence that the algal blooms are likely behind the whale deaths.
PERMALINK

 

13 Oct 2015: Antarctic Ice Shelves Face
Major Threat If CO2 Emissions Keep Rising

A new study says that many of Antarctica’s floating ice shelves — which play a key role in holding back vast amounts of land-based ice — could become highly unstable later this century if greenhouse gas emissions are not sharply reduced. An international team of researchers, reporting in Nature Geoscience, said that surface melting of Antarctica’s ice shelves could reach the point where many could disintegrate. Such surface melting has already led to the collapse of numerous ice shelves along the rapidly warming Antarctic Peninsula. The study said that surface melting of the continent’s ice sheets would double by 2050 under both intermediate- and high-emissions scenarios. After that, the fate of the ice shelves diverges sharply depending on emissions levels, with a high-emissions scenario leading to surface melting equaling or exceeding intensities associated with ice shelf collapse. Loss of the ice shelves could lead to major increases in sea level as inland glaciers flow to the sea, scientists say.
PERMALINK

 

05 Oct 2015: Icelandic Seafood Giant
May Be Involved in Endangered Whale Hunt

Iceland’s controversial annual hunt of fin whales — classified as "endangered" by the International Union for Conservation

Watch video

Slaughter of a fin whale
of Nature — ended with a catch of 155 fin whales, the largest slaughter since the 1986 moratorium on commercial whaling, reports the London-based advocacy group Environmental Investigation Agency (EIA). The EIA and the Animal Welfare Institute obtained evidence revealing the ongoing involvement of international seafood giant HB Grandi — a Reykjavík-based company with an annual income of roughly $230 million (as of 2011) — in the whaling business, despite its claims to the contrary. HB Grandi is Iceland’s largest seafood company and its CEO has repeatedly insisted that the company “is not involved in whaling and never has been.” Despite the international moratorium, Iceland recently has allowed commercial whaling and has shipped whale products to Japan.
PERMALINK

 

01 Oct 2015: International Space Station
Gives Glimpse of China's Aquaculture Sector

A slew of grid-patterned fish farms line the coast of Liaoning Province in northeast China, as shown in this photograph taken by

Enlarge

Aquaculture in China's Liaoning Province
an astronaut aboard the International Space Station. The aquaculture operations have been built out from the highly agricultural coast to a distance of roughly 4 miles. Liaoning Province ranks sixth in China in terms of aquaculture production, and this group of fish farms, which face the Yellow Sea, is the largest set constructed along the province's coastline. The fish farm basins are built on shallow seabeds, mudflats, and bays. Outer barriers protect the basins from winter storms and large waves generated by passing ships. Most aquaculture products are purchased live in China, with less than 5 percent being killed and processed for selling in local or foreign markets, the U.N. Food and Agriculture Organization (FAO), says. Shellfish, a traditional marine food source, still dominates China's marine production, according to the FAO's Fisheries and Aquaculture Department, accounting for 77 percent of the market.
PERMALINK

 

24 Sep 2015: Nearly Half of U.S. Seafood
Is Wasted Annually, New Study Shows

As much as 47 percent of the edible U.S. seafood supply is wasted each year, with more than half of that waste coming

Maine Avenue Fish Market in Washington, D.C.
at the consumer level as people throw away spoiled or uneaten seafood at home, according to a new study. Researchers from the Johns Hopkins Center for a Livable Future estimated the edible U.S. seafood supply at 4.7 billion pounds a year, and said that 2.3 billion pounds of that are wasted. The study, published in the Journal Global Environmental Change, said that 573 million pounds are lost annually as commercial fisherman catch and discard the wrong species. Roughly 330 million pounds are lost during distribution and retail, and 1.3 billion pounds are lost at the consumer level. The researchers recommended a number of changes to reduce the waste, including stricter limits on by-catch by commercial fishermen and efforts to encourage consumers to purchase frozen seafood.
PERMALINK

 

22 Sep 2015: Antarctic Seafloor Life Is
Locking Away a Lot of Carbon, Study Says

The loss of sea ice over Antarctic waters has caused certain forms of life to flourish on the seafloor, and those underwater communities

An Antarctic icefish swimming over bryozoans
are acting as important and unexpected carbon sinks, according to research published in the journal Current Biology. Based on studies of West Antarctic bryozoans — aquatic invertebrates sometimes referred to as "moss animals" — researchers have found that those and other seafloor organisms could play important roles in accumulating and burying carbon, removing it from the atmosphere for an extremely long time. The researchers calculate that growth of the bryozoans has nearly doubled over the past 20 years, with the animals taking in more than 200,000 tons of carbon per year since the 1980s. Accounting for other undersea species, the researchers suggest that roughly 3 million tons of carbon are sequestered each year, equivalent to nearly 200 square miles of tropical rainforest.
PERMALINK

 

21 Sep 2015: Rising Seas and More Intense
Storms Likely to Cause Major Flooding Spike

Rising seas and increasingly frequent and intense storms along the U.S. Atlantic and Gulf coasts could interact to produce alarming

Enlarge

Sea temperature increases along the Atlantic and Gulf coasts
spikes in the extent and duration of floods, according to a study published in Nature Climate Change. The study projects that coastal flooding could possibly shoot up several hundred-fold by 2100, from the Northeast to Texas. Even the study's most conservative calculations, based on greatly reduced greenhouse gas emissions over the next 85 years, suggest a 4- to 75-fold increase in the the combined heights and durations of expected floods. Over the past century, the East Coast has experienced sea level rise far beyond the 8-inch global average — up to a foot in much of the Mid-Atlantic and Northeast, including New York City. Most projections call for a further 2- to 4-foot rise by 2100, and some estimates go as high as 6 feet. At the same time, other studies suggest that in the future the largest North Atlantic storms may become more intense because warmer waters contain more energy.
PERMALINK

 

08 Sep 2015: NASA Facilities at Risk
From Projected Sea Level Increases

Many of NASA’s key sites for launching spacecraft and carrying out research will be threatened by even moderate increases in sea level,

Enlarge

Sea level rise near Johnson Space Center
the U.S. space agency reports. NASA says that half to two-thirds of its laboratories, launch pads, airfields, testing facilities, data centers and other infrastructure are situated at less than 16 feet (5 meters) above sea level. The agency released a handful of maps showing how even a one-foot rise in sea level would impact the operations of major sites such as the Kennedy Space Center in Florida, the Johnson Space Center in Texas, and the Langley Research Center in Virginia. Conservative projections say global sea level could increase by 5 inches by 2050, and numerous experts on climate change and sea level rise say that the world’s oceans could rise by 3 to 6 feet this century if emissions are not brought under control.
PERMALINK

 

In Booming Aquaculture Industry,
A Move to Plant-Based Food for Fish

As the aquaculture industry continues to rapidly expand, with production more than doubling in the past 15 years, fishing pressure

A worker feeds trout.
has grown on the anchovies, sardines, and other species used to make feeds for farmed fish. Now, however, researchers are rapidly developing nutritious plant-based food that can put the aquaculture sector on a more sustainable path. Using protein-rich legumes such as soybeans and combining them with various oil-rich supplements, scientists say they are steadily moving toward all-vegetarian diets for aquaculture fish. “I was told by many [people] that fish require fishmeal because that’s what they eat in the natural world,” says one leading researcher. “But that’s just wrong.”
Read more.
PERMALINK

 

18 Aug 2015: How West Antarctica Could Melt
If Greenhouse Emissions Continue to Rise

An international team of scientists has developed the first comprehensive, high-resolution model depicting

View Simulation

Simulation of West Antarctic Ice Sheet retreat
how rapidly the West Antarctic Ice Sheet (WAIS) could melt if greenhouse gas emissions are not brought under control. The study projects that under a high-emissions scenario, the WAIS could lose 80,000 cubic kilometers (19,000 cubic miles) of ice by 2100, increasing sea levels by 8 inches. By 2200, the WAIS could lose 48,000 cubic miles of ice, raising sea levels by a total of 23 inches, the study says. The video shows projected ice loss in the major glaciers feeding into the massive Amundsen Sea Embayment over the next three centuries. The red and orange colors depict the speed of glacial retreat in meters per year. The WAIS is only a fraction of the size of the East Antarctic ice cap, but if the entire WAIS were to melt, global sea levels would rise by roughly 16 feet.
PERMALINK

 

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