Saving Seafood

Atlantic Sturgeon and Climate Change: Warming Water Impacts Spawning and Development

October 28, 2023 — The following was released by NOAA Fisheries:

Atlantic sturgeon inhabit rivers and coastal waters from Canada to Florida and can live for 30-60 years. The sturgeon family is the most primitive of all bony fish, with ancestors dating back to the Cretaceous period more than 120 million years ago. Atlantic sturgeon are particularly sensitive to high water temperatures, especially their eggs and juveniles. This sensitivity makes them vulnerable to warming water temperatures associated with climate change.

Beginning in the late 1800s, commercial fisheries began to harvest valuable caviar from Atlantic sturgeon. By the early 1900s, their populations had declined drastically. Recovering Atlantic sturgeon is challenged by their long generational cycles and late age of sexual maturity for reproduction. In response to historic and current challenges, NOAA Fisheries listed four distinct population segments of Atlantic sturgeon as endangered and one as threatened under the Endangered Species Act in 2012.

In 2023, NOAA Fisheries celebrates the 50th anniversary of the Endangered Species Act. Since it was enacted, no listed marine or anadromous species have gone extinct. However, as climate change intensifies, the recovery of listed species, like the Atlantic sturgeon and its relatives, may become more challenging. Through climate-focused research and management, NOAA Fisheries aims to mitigate the potential impacts of climate change on listed species to foster their continued recovery.

Impacts of Warming Water Temperatures

Atlantic sturgeon migrate from freshwater rivers and estuaries to the ocean as sub-adults, then return to spawn in the same rivers where they were born. Spring spawning adults move inland when temperatures warm and days are longer. Fall spawning adults move upriver in the heat of the summer to spawn as water temperatures cool in the fall. Due to climate change, the rivers and bays of the U.S. East Coast are warming earlier in the spring, and experiencing hotter peaks during the summer.

Juvenile Atlantic sturgeon prefer water temperatures between 65–72°F to develop, and they will be healthiest during years with that temperature range. Inland waters that warm faster and stay warm for longer due to climate change may limit successful spawning and threaten the survival of eggs and juveniles.

Council Discusses Climate Change, Research Priorities, EBFM, Sturgeon, Right Whales, and Equity & Environmental Justice

July 14, 2022 — The New England Fishery Management Council met June 28-30, 2022 and received numerous updates over the course of its three-day hybrid meeting in Portland, Maine. Here are a few of the highlights.

CLIMATE CHANGE: The Council received a presentation from the Northeast Fisheries Science Center on the Draft Northeast Climate Regional Action Plan, which is out for public comment through July 29, 2022. Version 1 of the plan was in place from 2016 to 2021. The current draft – Version 2 – will be used by NOAA Fisheries to implement the agency’s Climate Science Strategy in 2022-2024. The document contains information on warming ocean temperatures (see graphic at right) and much more. The Council received input from its Scientific and Statistical Committee (SSC) on the draft action plan and will be submitting its own written comments in advance of the deadline.

The Council also received a progress report on the East Coast Climate Change Scenario Planning initiative. The overarching questions are:

• How might climate change affect stock availability and distribution, as well as other aspects of East Coast marine fisheries, over the next 20 years; and

• What does this mean for effective future governance and management across multiple jurisdictions? What tools are needed to provide flexible and robust management strategies to address uncertainty in an era of climate change?

The Core Team working on this initiative hosted a June 21-23, 2022 Scenario Creation Workshop where participants developed scenarios or stories describing eight alternative futures under climate change. Next, the Core Team will review and edit inputs from the workshop to create a draft set of scenarios for further discussion and feedback during three scenario deepening webinars in mid-August. These webinars will be open to the public. The Council will have an in-depth discussion of the scenarios during its September 27-29, 2022 meeting and provide feedback to the Core Team on next steps.

Read the full release here

5-Year Reviews for the Gulf of Maine, New York Bight, and Chesapeake Bay Distinct Population Segments (DPS) of Atlantic Sturgeon

February 17, 2022 — The following was released by NOAA Fisheries:

Today, NOAA Fisheries is releasing the 5-Year Reviews for the Gulf of Maine, New York Bight, and Chesapeake Bay Distinct Population Segments (DPS) of Atlantic sturgeon. These reviews summarize and evaluate new information on the status of each DPS and its major threats, using new data that has become available since the DPSs were listed in 2012.

Each DPS continues to be at a low level of abundance, and stressors including bycatch, vessel strikes, habitat loss and alteration, and global climate change lead us to recommend that the Gulf of Maine DPS remains listed as threatened, and the New York Bight and Chesapeake Bay DPSs remain listed as endangered. The reports further identify recommendations for future actions to promote the recovery of each of the Gulf of Maine, New York Bight, and Chesapeake Bay DPSs of Atlantic sturgeon. The 5-year reviews for the Carolina and South Atlantic DPSs of Atlantic sturgeon are on-going.

 

Sturgeon, America’s forgotten dinosaurs, slowly coming back

July 10, 2019 — Sturgeon were America’s vanishing dinosaurs, armor-plated beasts that crowded the nation’s rivers until mankind’s craving for caviar pushed them to the edge of extinction.

More than a century later, some populations of the massive bottom feeding fish are showing signs of recovery in the dark corners of U.S. waterways.

Increased numbers are appearing in the cold streams of Maine, the lakes of Michigan and Wisconsin and the coffee-colored waters of Florida’s Suwannee River.

A 14-foot Atlantic sturgeon — as long as a Volkswagen Beetle — was recently spotted in New York’s Hudson River.

“It’s really been a dramatic reversal of fortune,” said Greg Garman, a Virginia Commonwealth University ecologist who studies Atlantic sturgeon in Virginia’s James River. “We didn’t think they were there, frankly. Now, they’re almost every place we’re looking.”

Following the late 1800s caviar rush, America’s nine sturgeon species and subspecies were plagued by pollution, dams and overfishing. Steep declines in many populations weren’t fully apparent until the 1990s.

Read the full story at the Associated Press

For decades, scientists thought sturgeon had vanished from Maryland waters. They’re delighted to be wrong

January 3, 2019 — When David Secor started his career at the Chesapeake Biological Laboratory almost three decades ago, one of his first projects concluded that the Atlantic sturgeon had all but disappeared from polluted Maryland waters.

The population of the massive fish — often 14 feet long — that once swam with dinosaurs plummeted in the 1900s amid rising demand for their eggs, better known as caviar. Overfishing devastated the species for the same reason caviar is such an expensive delicacy: Sturgeon roe is scarce because females don’t produce it until they’re at least 9 or 10 years old. Even then, the fish don’t spawn every year.

So Secor and other biologists were shocked and then intrigued when, over the past decade, watermen and recreational fishermen started spotting what looked unmistakably like sturgeon flopping and splashing around the Nanticoke River on Maryland’s Eastern Shore. One even landed on the deck of a fisherman’s boat.

Read the full story at the Carroll County Times

ASMFC: April/May 2018 issue of Fisheries Focus Now Available

June 1, 2018 — The following was released by the Atlantic States Marine Fisheries Commission:

The April/May 2018  issue of Fisheries Focus is now available at http://www.asmfc.org/uploads/file/5b103db7FishFocusAprilMay2018.pdf.

Upcoming Meetings

page 2

From the Executive
Director’s Desk 

Black Sea Bass: Seeking Solutions through Compromise

page 3

Species Profile

Atlantic Sturgeon

page 4

Fishery Management Actions 

Atlantic Menhaden

Black Drum

Black Sea Bass

page 6

Science Highlight

ASMFC Habitat Committee Revisits 20-Year Policy on Submerged Aquatic Vegetation

page 7

On the Legislative Front

page 8

Comings & Goings

page 9

Proposed Management Action

American Eel

page 11

In the News: Maine’s Elver Fishery Shuts Down

page 11

ACCSP Update

FY19 Proposals Due June 11

ACCSP Releases 2017 Annual Report

page 13

Employees of the Quarter Named

page 14

 

Endangered status of Atlantic sturgeon up for review

March 27, 2018 — Federal fishing regulators say they are conducting a five-year review of threatened and endangered populations of Atlantic sturgeon.

Populations of sturgeon are listed as threatened in the Gulf of Maine and endangered in New York Bight, the Chesapeake Bay and off the Carolinas and South Atlantic.

The National Oceanic and Atmospheric Administration says the Endangered Species Act requires the agency to conduct the review to ensure the listings are still accurate. The listings are intended to be based on the best available scientific data.

The Atlantic States Marine Fisheries Commission said last year that a sturgeon stock assessment indicated the population is still very low compared to its historical abundance. They face threats such as climate change, ship strikes and fishing.

Sturgeon suffered overfishing in the 20th century when it was harvested for eggs for caviar.

Shortnose sturgeon are listed under the Endangered Species Act (ESA) as an endangered species throughout their range. Atlantic sturgeon are listed as five distinct population segments with those that hatch out in Gulf of Maine rivers listed as threatened, and those that hatch out in other U.S. rivers listedas endangered.

Once thought to number less than 100 in the Merrimack, the river’s shortnose sturgeon population has been on the rebound, researchers have said. Atlantic sturgeon are also found in the Merrimack, up to the Essex Dam in Lawrence.

Two distinct groups of adults, numbering more than 2,000, inhabit the river. One group includes fish born in Haverhill’s spawning grounds, while the other consists of fish born in Maine rivers such as the Kennebec and Androscoggin, which migrate to the Merrimack.

Researchers say that for much of the year, sturgeon are looking for food in the lower part of the Merrimack — from Amesbury to the Joppa Flats in Newburyport — and live there from November to March.

Haverhill is the only place in the river where sturgeon lay their eggs, and that happens in the spring.

Read the full story at the Gloucester Times

 

NOAA: GARFO Releases 2017 Year in Review Report

February 2, 2018 — The following was released by NOAA Fisheries: 

The Greater Atlantic Regional Fisheries Office is proud to announce the release of our third annual Year in Review report.

In 2017, we continued to work toward our goals of sustainable use of living marine resources, conservation of the habitats upon which these resources depend, and the protection of endangered species and marine mammals.

In this report, we highlight some significant advances in conservation, such as finalizing the deep sea coral protection zones in the Mid-Atlantic, multiple successful projects to help fish get beyond barriers in rivers to spawn, and the designation of Atlantic sturgeon critical habitat. We helped save hundreds of sea turtles that had been trapped in the Gulf of Maine when water temperatures dropped, and we made good progress this year developing a system for storing fishery dependent data in a single database, which will greatly streamline the analysis of fish catches.

None of these accomplishments is ours alone. One of the keys to GARFO’s success is the dedication and commitment of our many partners. Indeed, one of the accomplishments of which we are most proud is our continued efforts to improve collaboration with our partner institutions.

We hope you will enjoy reading this short summary of GARFO’s highlights for the fiscal year 2017.

View NOAA Fisheries Greater Atlantic Region year in review here.

 

VIRGINIA: Endangered sturgeon’s return to James River could be hurdle for industry

Dominion seeking federal permit to ‘take’ protected fish after dead ones found in power plant’s water intake

November 17, 2017 — In the James River south of Richmond, endangered Atlantic sturgeon have become so common that observant spring and fall boaters are nearly guaranteed to see one breach. It’s hard to miss — a 6– or 7-foot fish exploding out of the water, as if shot from a cannon, wiggling for a split second in midair, then belly-flopping back into the river with a theatrical splash.

Long-lived and enormous — in its 60-year lifespan it can grow to 14 feet and weigh as much as 800 pounds — the Atlantic sturgeon was harvested to the brink of extinction in the late 1800s. But after a century of marginal existence, this prehistoric-looking fish, with its flat snout and rows of bony plates covering its back, is staging a steady but still fragile comeback in the Chesapeake Bay.

The sturgeon’s increased presence could complicate matters for industrial facilities that draw water from that same stretch of river. In one case, it already has.

After finding two dead sturgeon larvae and one adult in its water intake system in the fall of 2015, Dominion Virginia Power’s Chesterfield Power Station began seeking an “incidental take” permit from the National Marine Fisheries Service, which would allow the company to continue operating despite a potential impact to the endangered fish. In its application for the permit, Dominion estimated that up to 846 sturgeon larvae and maybe two adult fish per year could be trapped or killed in the intakes over the next decade.

The fisheries service, part of the National Oceanic and Atmospheric Administration, will determine in the coming months whether to grant Dominion’s Chesterfield plant a federal permit under an Endangered Species Act provision that allows private entities to “take” a given number of an endangered or threatened species in the process of conducting otherwise lawful operations.

Read the full story at the Bay Journal

Sturgeon not surging, but population slowly improves

October 29, 2017 — PORTLAND, Maine — The Atlantic sturgeon’s population remains depleted along the East Coast, but appears to be slowly recovering.

The Atlantic States Marine Fisheries Commission says a stock assessment indicates the population is still very low compared to its historical abundance. But the commission also says the population has made some strides since the implementation of a complete fishing moratorium in 1998.

Read the full story at the Virginian-Pilot