Saving Seafood

Half the World’s Coral Reefs Already Have Been Killed by Climate Change

October 11, 2019 — The oceans have long been the biggest buffer for humankind’s dangerous greenhouse-gas emissions. Around a quarter of all the carbon dioxide released into the atmosphere since the 1980s—from driving cars, running factories and churning out electricity with fossil fuels—has ended up sunk into the waters. As the planet has warmed from mounting emissions, the oceans warmed first and fastest, absorbing 90% of that excess heat. A report released last month by the UN-based Intergovernmental Panel on Climate Change, the foremost scientific authority on the subject, warned that damage to the oceans is accelerating and may be at the point of irreversibility.

That makes delicate coral reefs around the world something of a leading indicator for the collapse of the ocean ecosystem. Half of all reef systems have already been destroyed, putting a quarter of marine life at risk. Even if global warming is limited to the 1.5 degree Celsius target outlined in the 2016 Paris Agreement—a longshot goal, at the current rate of emissions—the IPCC now concludes that “almost all warm-water coral reefs are projected to suffer significant losses of area and local extinctions.”

In a perverse consequence, lost reefs will leave nearby coastlines even more vulnerable to erosion and storms, as well as from accelerating sea-level rise, which could go up by as much as two feet this century as a result of glacier melt.

Read the full story at Bloomberg

Trump Sued For Failing To Protect Hawaii’s Cauliflower Coral

October 11, 2019 — The Center for Biological Diversity said Thursday that it is suing the Trump administration for failing to protect cauliflower coral around the Hawaiian Islands.

“The bushy, shallow-water coral species has been devastated by ocean warming triggered by human-caused climate change,” according to a press release.

The warming is due to a “marine heat wave … now hitting Hawaii’s coral reefs hard, and researchers predict massive coral bleaching and death.”

The coral species is estimated to have declined by 36% from 1999 to 2012, and conditions are expected to worsen.

“Cauliflower coral is like the canary in the coal mine of our warming oceans. Marine life around Hawaii will suffer without bold actions to protect coral reefs,” said Maxx Phillips, the center’s Hawaii director. “Hawaii’s coral reefs are dying and they need our help. Letting colorful corals bleach white and die indicates an ocean becoming less bountiful and biodiverse.”

Read the full story at the Honolulu Civil Beat

How A Tough New England Coral May Help Its Tropical Cousins

August 26, 2019 — Koty Sharp emerges from the ocean off the coast of Fort Wetherill, Rhode Island, and walks onto the rocky beach. She’s wearing scuba gear and carrying a red mesh bag. Sharp is an ecologist at Roger Williams University in nearby Bristol, and the red bag holds a treasure.

She opens it for inspection. “This what a coral colony looks like, here in Rhode Island,” says Sharp, gazing fondly into the bag. Inside there are about 30 small gray rocks, each about the size of a quarter. The rocks appear to be covered with snot.

“It’s not as charismatic as tropical corals, we will definitely accept that,” says Sharp. “But these stand to tell us a lot of basics about corals.”

Read the full story at WBUR

Maine Scientist: Climate Change Is Driving Corals To Cooler Waters. Will They Survive?

July 12, 2019 — Climate change is causing a significant shift in coral reef populations as warmer ocean waters drive them away from the equator, a new scientific study has found.

The study, published this month in the journal Marine Ecology Progress Series, found that young corals on tropical reefs have declined 85 percent over the past four decades, while they have doubled in subtropical waters.

Climate change is the “greatest global threat” to coral reefs as mass coral bleaching and disease outbreaks become more common as the ocean warms, according to the National Oceanic and Atmospheric Administration. But as the coral reefs come under increasing pressure from climate change, they are finding new opportunities to thrive in a changing ocean environment.

“Climate change seems to be redistributing coral reefs, the same way it is shifting many other marine species,” said Nichole Price, a senior research scientist at Maine’s Bigelow Laboratory for Ocean Sciences and the lead author of the paper. “The clarity in this trend is stunning, but we don’t yet know whether the new reefs can support the incredible diversity of tropical systems.”

Read the full story at Maine Public

Place-Based Management Can Protect Coral Reefs in a Changing Climate

April 30, 2019 — Researchers from the state Department of Health and the University of Hawai‘i at Mānoa have developed and applied a new technology in Hawai‘i that identifies where coral reef ecosystems and associated fisheries are vulnerable to human activities and where to focus management actions to minimize anthropogenic impacts.

The authors of the newly published study in the journal Ecological Applications identified specific locations on land where improved wastewater management and landscape practices would yield the greatest benefits for downstream reefs in terms of mitigating harm to coral communities and associated reef fish populations.

Expansion of coastal development, along with wastewater discharge and fertilizers, can harm coral reefs and their fisheries through increases in sediment and nutrient runoff. Consequent reef degradation directly affects ecological resilience, food security, human well-being, and cultural practices in tropical island communities around the world.

The researchers focused on the ahupua‘a (land divisions) of Hāʻena on Kaua‘i and Ka‘ūpūlehu on Hawai‘i Island, at opposite ends of the main Hawaiian Islands, where native Hawaiian communities are taking action to manage their resources through a place-based management approach.

Read the full story at Big Island Now

Cauliflower Coral Could Be Listed as Endangered

September 25, 2018 — Officials say endangered or threatened species protection may be warranted for cauliflower coral across its entire range — not just Hawaii.

The Hawaii Tribune-Herald reports the National Marine Fisheries Service issued last week its 90-day finding on a March petition seeking Endangered Species Act protection for the coral.

The coral, Pocillpora meandrina, is found in Hawaii and on most shallow reefs in the Indo-Pacific and Eastern Pacific. It has been devastated by habitat changes, disease and predation, lack of protection and other natural man-made factors.

The Center for Biological Diversity, which raised the petition, says in Hawaii alone, there was a 36.1 percent drop in coverage from 1999-2012.

Read the full story from the Associated Press at U.S. News

Hawaiian Coral is considered for federal protection

September 20, 2018 — Hawaiian cauliflower coral is one step closer to federal protection under the Endangered Species Act, according to the first review released on Wednesday by the National Marine Fisheries Service of a manufacturing sponsor of the Center for Biodiversity.

Nickname cauliflower, Pocillopora meandrina is often pink, green or cream-colored and is characterized by its branching colonies. Called Ko? A on Hawaiian, the coral is rich in rocky reefs throughout the Indo-Pacific and East Pacific.

“Information presented in the production and other readily available information in our files shows that the most important threat to P. meandrina throughout its assortment at present and in the future, and to the coral columns in the Indo-Pacific region, such as P. meandrina is a part off, marine warming and subsequent warming-induced coral bleeding and mortality, says the report.

Between 2014 and 2015, cauliflower coral was one of many species affected by severe bleeding events, in which single-cell organisms called zooxanthellae that live inside the coral structure and give that pigment expelled. Zooxanthellae can resettle in the coral, other times the organism dies.

Subsequent investigations of Hanauma Bay on Oahu in 2016 recorded evidence of bleeding in 64 percent of P. meandrina colonies, while 1.3 percent were “affected by total post bleaching mortality”. On the western coast of Big Island, 49.6 percent of all living corals were leaks lost.

“Corrosion protection ultimately needs to reduce global temperature increases by drastically reducing fossil fuels. Cauliflower coral is also threatened locally through land-based contamination, sedimentation and physical disturbance caused by human activities, “says the Center for Biological Diversity in a Press Release.

Read the full story at Vaaju

Expanded protection of coral reefs in Gulf of Mexico may not be ready for approval until 2020

September 13, 2018 — A plan to expand the network of federally protected coral reef systems in the Gulf of Mexico may not be ready for approval by the Trump administration until early 2020, officials said Wednesday.

That means about five years will have passed since officials first began discussing in 2015 expanding the Flower Garden Banks National Marine Sanctuary, located about 100 miles off the coast of Galveston.

The sanctuary designation, which prevents over fishing and harassment of marine life in the area, currently stretches across 56 square miles, or three banks. In May, the sanctuary’s advisory council approved a proposal that would expand that area to 206 square miles, or 17 banks.

But officials have identified some potential tweaks. For example, the new plan actually would eliminate some of the protected area around Stetson Bank, one of the three current banks.

“There has not been a final decision how proceed,” sanctuary Superintendent G.P. Schmahl said during a Wednesday advisory council meeting, adding that officials likely would adjust the Stetson Bank boundaries.

According to the Flower Garden Banks website, there are several more steps to go in the process. For example, the National Oceanic and Atmospheric Administration, which oversees the 13 federally designated national marine sanctuaries, still must ask the Department of Interior to analyse the plan to understand how it will impact energy and mineral resource development.

Read the full story at the Houston Chronicle

Gulf’s deep-sea coral granted new protections by federal regulators

July 3, 2018 — Federal fisheries regulators have approved a plan granting new protections to some of the Gulf of Mexico’s oldest and most fragile stands of deep-sea coral.

The Gulf of Mexico Fishery Management Council unanimously voted to designate about 480 square miles as Habitat Areas of Particular Concern, a status that would make them a priority for conservation and scientific study. The protected areas are broken up into 21 sites, most off the Louisiana coast.

The council’s designations have been submitted to the National Marine Fisheries Service for review. Final approval is expected after a two-month public comment period.

Environmental groups had been lobbying for the protections for years. The Pew Charitable Trusts, which gathered 16,000 signatures in support, called the council’s decision “a major milestone” for critically important marine habitat.

Read the full story at The Times-Picayune

Marine heatwaves are getting hotter, lasting longer and doing more damage

June 1, 2018 — On land, heatwaves can be deadly for humans and wildlife and can devastate crops and forests.

Unusually warm periods can also occur in the ocean. These can last for weeks or months, killing off kelp forests and corals, and producing other significant impacts on marine ecosystems, fishing and aquaculture industries.

Yet until recently, the formation, distribution and frequency of marine heatwaves had received little research attention.

Long-term change

Climate change is warming ocean waters and causing shifts in the distribution and abundance of seaweeds, corals, fish and other marine species. For example, tropical fish species are now commonly found in Sydney Harbour.

But these changes in ocean temperatures are not steady or even, and scientists have lacked the tools to define, synthesize and understand the global patterns of marine heatwaves and their biological impacts.

At a meeting in early 2015, we convened a group of scientists with expertise in atmospheric climatology, oceanography and ecology to form a marine heatwaves working group to develop a definition for the phenomenon: A prolonged period of unusually  at a particular location for that time of the year. Importantly, marine heatwaves can occur at any time of the year, summer or winter.

Read the full story at PHYS