Saving Seafood

More Endangered Right Whales Are Leaving New England for Canada

April 25, 2022 — Local researchers are studying why North Atlantic right whales are migrating out of our area into more northern waters in Canada.

Some believe rapidly warming waters in the Gulf of Maine could be playing a role, but they’re just not sure how.

The North Atlantic right whale is one of the most critically endangered animals on the planet.

Researchers from the New England Aquarium are studying these majestic creatures and they think some of the answers might lie in their poop.

Dr. Elizabeth Burgess is a research scientist with the aquarium that studies hormone changes in right whales. Unfortunately, the easiest way to collect hormones is through their feces.

“So nutritional stress is of really great concern for this species, as is the reproductive viability as well. So all of these things we can, we’re using hormones to better understand what’s happening,” said Burgess.

Read the full story at NBC Boston

These whales are on the brink. Now comes climate change — and wind power.

April 22, 2022 — About 17 nautical miles south of Nantucket, a half-dozen New England Aquarium researchers scrambled across this vessel’s icy deck. Clutching binoculars, clipboards and cameras, they strained to catch a glimpse and scribble notes about a pair of creatures they fear are disappearing from this world.

After nine hours on the water, Amy Warren’s team had found two animals it knew by name. As the pair arched their heads above the water, the research scientist urged her colleagues with cameras to capture them.

“Get it, get it, get it, get it!”

With only about 300 left, the North Atlantic right whale ranks as one of the world’s most endangered marine mammals. Nearly annihilated centuries ago by whalers, the slow-swimming species is said to have earned its name because it was the “right” whale to hunt.

Old-fashioned harpoons have yielded to other threats. Humans are still killing right whales at startlingly high numbers — but by accident. Waters free from whalers now brim with ships that strike them, and ropes that entangle them.

The latest challenges come in a changing climate. Rising temperatures are driving them to new seas. And soon, dozens of offshore wind turbines — part of President Biden’s clean energy agenda — will encroach their habitat as the administration tries to balance tackling global warming with protecting wildlife.

Read the full story at The Washington Post

Bering Sea crabbers and communities are struggling with Alaska’s snow crab decline

April 21, 2022 — Bering Sea crabbers and communities in the region are struggling with a steep decline in snow crab this year, likely the result of climate change.

That caused the crab fleet to push farther north than usual and forced places like St. Paul to consider major budget shortfalls, because the Pribilof Island city depends on taxes from fish and crab processing.

The snow crab crash and its impacts are the subject of a recent reporting collaboration between the Seattle Times, the Anchorage Daily News and the Pulitzer Center’s Connected Coastlines reporting initiative.

As part of the “Into the Ice” series, Seattle Times reporter Hal Bernton and ADN photographer Loren Holmes spent two weeks in January aboard a crab boat called the Pinnacle, one of the biggest in the fleet at 137 feet.

Read the full story at KTOO

NOAA showcases new mapping tool for marine species

April 19, 2022 — NOAA Fisheries is launching a new tool to better track the location and movement of marine fish in U.S. waters. The Distribution Mapping and Analysis Portal reveals that the ranges of many marine species are shifting, expanding and contracting in response to changing ocean conditions. The interactive website will improve data sharing and collaboration, facilitate decision-making about fishery management and science and increase overall knowledge of species distribution for stock assessments.

The portal displays data from NOAA Fisheries bottom trawl surveys for five regions (Northeast, Southeast, Gulf of Mexico, West Coast and Alaska) and includes a map viewer and graphing capabilities for over 800 marine fish and invertebrate species caught during the surveys. Understanding how species are distributed in space and time, and the factors that drive patterns, are central questions in ecology and important for species conservation and management.

“Our climate and oceans are changing, and these changes are affecting the distribution and abundance of living marine resources in our waters,” said Rick Spinrad, Ph.D., NOAA administrator. “Changes in fish stocks can have significant economic and cultural impacts for communities and businesses across the U.S. The visualization capabilities of this new tool boost our ability to turn the data NOAA collects into robust decision-making resources for the entire fishery management community, helping build a Climate-Ready Nation.”

Read the full story at NOAA Fisheries

Climate change could significantly impact commercial fishing, Rutgers study says

April 18, 2022 — Fish such as cod, anchovy and sardines could decline in the future as climate change forces marine species to find survivable ocean temperatures and disrupts predator-prey relationships, according to a new Rutgers University study. The authors say this could have implications for the fishing industry.

Marine species require certain temperatures to survive and reproduce, and they also need to eat. Rutgers researchers evaluated the relationship between survivable ocean temperatures and species’ need to find prey.

They found that climate change could dramatically reshuffle marine food webs (how one species feeds on another), and that predator-prey interactions could prevent marine species from keeping up with the temperatures they need to flourish. The result is fewer productive species that can then be caught by fisheries, and feed the world.

“Marine life, in many ways, is at the frontlines of experiencing the effects of climate change — they’re moving to new locations much faster than species on land, for example,” said study author Malin Pinsky, an associate professor of ecology, evolution, and natural resources at Rutgers.

Read the full story at WHYY

The information age is starting to transform fishing worldwide

April 14, 2022 — People in the world’s developed nations live in a post-industrial era, working mainly in service or knowledge industries. Manufacturers increasingly rely on sensors, robots, artificial intelligence and machine learning to replace human labor or make it more efficient. Farmers can monitor crop health via satellite and apply pesticides and fertilizers with drones.

Commercial fishing, one of the oldest industries in the world, is a stark exception. Industrial fishing, with factory ships and deep-sea trawlers that land thousands of tons of fish at a time, are still the dominant hunting mode in much of the world.

Fishing with data

Changes in behavior, technology and policy are occurring throughout the fishing industry. Here are some examples:

  • Global Fishing Watch, an international nonprofit, monitors and creates open-access visualizations of global fishing activity on the internet with a 72-hour delay. This transparency breakthrough has led to the arrest and conviction of owners and captains of boats fishing illegally.
  • The Global Dialogue on Seafood Traceability, an international business-to-business initiative, creates voluntary industry standards for seafood traceability. These standards are designed to help harmonize various systems that track seafood through the supply chain, so they all collect the same key information and rely on the same data sources. This information lets buyers know where their seafood comes from and whether it was produced sustainably.
  • Fishing boats in New Bedford, Massachusetts – the top U.S. fishing port, based on total catch value – are rigged with sensors to develop a Marine Data Bank that will give fishermen data on ocean temperature, salinity and oxygen levels. Linking this data to actual stock behavior and catch levels is expected to help fishermen target certain species and avoid unintentional bycatch.

The ocean’s restorative power

There is no shortage of gloomy information about how overfishing, along with other stresses like climate change, is affecting the world’s oceans. Nonetheless, I believe it bears emphasizing that over 78% of current marine fish landings come from biologically sustainable stocks, according to the United Nations. And overharvested fisheries often can rebound with smart management.

For example, the U.S. east coast scallop fishery, which was essentially defunct in the mid-1990s, is now a sustainable US$570 million a year industry.

Read the full story at The Conversation

Nations Promise Billions For Sustainable Oceans At Palau Conference

April 14, 2022 — Nations and philanthropic organizations pledged to redouble their efforts to conserve the world’s oceans this week at the seventh Our Ocean conference in Palau.

The conference spanned two days of speeches, panels and sessions about sustainable fisheries, Indigenous community-led conservation and other topics related to oceans.

Leaders and representatives of nonprofit groups made promises to better address climate change and related issues as advocates pressed for more urgent action.

On Wednesday in Palau, the European Union promised to back 44 ocean-related commitments worth more than $1 billion. The U.S. government announced over 100 commitments worth $2.7 billion, including 16 new sustainable fisheries initiatives worth at least $120 million and a new tool for assessing marine-protected areas.

Read the full story at Honolulu Civil Beat

 

Scientists are tracking the link between pollution, climate change, and rising mercury levels in fish

April 11, 2022 — Eating fish is the most common way people are exposed to mercury — more specifically, methylmercury, a highly toxic organic compound. While low levels of exposure are typically harmless, and fish is a healthy source of protein, its overconsumption can lead to neurological problems, especially for fetuses and young children.

The amount of mercury in the atmosphere has quadrupled since the Industrial Revolution, according to some estimates. The pollution has been largely caused by emissions from coal-fired power plants, but other industries also play a role.

Though mercury levels in water are declining — thanks to decreasing coal use in North America and Europe, and technology that reduces sulfur in smoke stacks — scientists are now discovering that climate change might increase methylmercury levels in fish. That’s because fish are becoming more active with rising ocean temperatures, requiring more food and therefore, ingesting more mercury, according to a 2019 Harvard University study.

Researchers in Delaware and New Jersey are trying to find out where and why mercury levels persist. The research, they say, is part of an effort to manage marine fisheries and inform human health guidelines.

“Understanding how methylmercury accumulates in marine fish will help us identify and control its sources to the ocean, and studying how concentrations of methylmercury vary among fish that people eat will improve guidelines for safe seafood consumption,” said Dr. John Reinfelder, an environmental sciences professor at Rutgers University, who has been studying mercury levels in bluefin tuna populations.

Read the full story at WHYY

Changing Oceanographic Conditions And Environmental Justice Concerns In The Northeast Shelf

April 6, 2022 — Two new reports show the Northeast continental shelf marine ecosystems are experiencing notable ocean warming and changes in oceanography. The reports include new indicators that evaluate environmental justice concerns.

The Northeast shelf extends from North Carolina to Maine and is one of the most productive marine ecosystems in the United States. The annual New England and Mid-Atlantic State of the Ecosystem reports capture the big picture of the biology, climate, physical, and social conditions of the marine ecosystem. The assessments inform fisheries management by showing how the ecosystem is connected and changing. This ecosystem change, in turn, affects the distribution and abundance of marine species from phytoplankton to whales.

“We develop these reports along with the regional fishery management councils to provide information on current social, economic, and environmental conditions and address priority questions on factors affecting their management objectives. Every year, the Mid-Atlantic Fishery Management Council uses these reports to update their ecosystem level risk assessment. This gives managers a quick overview of conditions that may affect fisheries,” said Sarah Gaichas, co-editor at the Northeast Fisheries Science Center.

Read the full story at NOAA Fisheries

‘Resilient’ leatherback turtles can survive fishing rope entanglements. Mostly

April 6, 2022 — Leatherback sea turtles run a gantlet of fishing lines and other human impacts during their annual migratory loop from Caribbean nesting grounds to the eastern coast of North America and back. One of the leatherback turtle’s biggest obstacles is entanglement in ropes from lobster pot traps deployed by commercial fisheries in the waters of New England. A recently published report in Endangered Species Research found that while turtles can survive entanglement if reached by rescuers, new approaches in fisheries are needed for them to survive over the long term.

“I was surprised and encouraged by how many of the cases [showed] that the turtles were able to survive these events,” said lead author Kara Dodge, from the New England Aquarium in Massachusetts, who analyzed 15 years’ worth of data collected by the Center for Coastal Studies (CCS) based in Provincetown, Massachusetts.

The CCS played the dual role of collecting data and coming to the rescue during turtle entanglements with its Marine Animal Entanglement Response Program. Between 2005 and 2019, the CCS saved more than 100 leatherback turtles. The world’s largest sea turtle, the leatherback, Dermochelys coriacea, is currently listed as vulnerable on the IUCN Red List, and is threatened by fisheries, destruction of beaches and climate change.

Read the full story at Mongabay