Saving Seafood

SCEMFIS: New Survey Will Help Fill Gaps in Menhaden Count in New England, Mid-Atlantic

January 14, 2022 — The Science Center for Marine Fisheries (SCEMFIS) highlighted a new project that will look to count a population of menhaden that could help inform not only a local New Jersey fishery but other fisheries in New England and the Mid-Atlantic region.

A team from the University of Maryland Center for Environmental Science’s (UMCES) Chesapeake Biological Laboratory and the Virginia Institute of Marine Science, in collaboration with NOAA Fisheries are on the verge of launching a winter population survey of menhaden, specifically off the coast of New Jersey, SCEMFIS said.

That area is home to a growing winter bait fishery but because there hasn’t been much work to survey the population that far north, there is not a strong enough count of how many fish are in that area.

The survey, which will launch from Cape May, New Jersey, will use sonar equipment to estimate the number of menhaden schooling in the area, and will collect additional information to estimate age, size, and weight, data that will be important for managing the fishery, per SCEMFIS.

Read the full story at Seafood News

New Acoustic Survey Will Investigate Previously Uncounted Menhaden

January 12, 2022 — The following was released by the Science Center for Marine Fisheries:

Despite being one of the largest and most high-profile fisheries on the East Coast, there are still gaps in our understanding of Atlantic menhaden. This is especially true in their northern range, in New England and the Mid-Atlantic. But this winter, a new project will look specifically to count menhaden in these areas, shedding new light on an important but underexamined portion of this species.

A team from the University of Maryland Center for Environmental Science’s (UMCES) Chesapeake Biological Laboratory and the Virginia Institute of Marine Science, in collaboration with NOAA Fisheries, is about to launch a winter population survey of menhaden, specifically of menhaden spending the season off the coast of New Jersey. The area is home to a growing winter bait fishery, but because there have been few attempts to survey menhaden this far north, there is currently not a good count of how many menhaden are in the area, as well a lack of good data on measurements like age and weight compositions.

The survey, which will launch from Cape May, New Jersey, will use sonar equipment to estimate the number of menhaden schooling in the area, and will collect additional information to estimate age, size, and weight, data that will be important for managing the fishery.

“Right now, having a full picture of menhaden is limited by the lack of available information on the northern part of the stock,” said Dr. Genny Nesslage, a professor at UMCES and one of the lead researchers on the project. “Surveying this part of the population will hopefully give regulators the data they need to make informed decisions on how to manage menhaden coastwide.”

Atlantic menhaden are a coastwide species, with a range spanning from Maine to Florida. But most of our knowledge of the stock comes from data collected from purse seine fisheries in the Mid-Atlantic and around the Chesapeake Bay. Because older, larger menhaden are more likely to be found in northern waters, an entire segment of the menhaden population is not fully counted by current data collection methods.

As it is increasingly clear that there are significant numbers in this northern portion of the menhaden stock, surveys like these will be important in providing a fuller picture of the population, benefitting both the regional bait fishery and other, existing menhaden fisheries.

“Getting a better count of menhaden in the north is critical in improving our understanding of the fishery coastwide, and validating the population estimates that come from our current assessment models,” said Dr. Nesslage. “The more diverse sources of data we have on menhaden, the more confident we can be in our decisions on how to manage it.”

The survey was funded by the NOAA Fisheries Saltonstall-Kennedy Competitive Grants Program and its design was funded by a grant from the Science Center for Marine Fisheries (SCEMFIS), which connects marine scientists with members of the fishing industry to fund needed research for finfish and shellfish.

Late-season Arctic research cruise reveals warm ocean temperatures, active ecosystem

November 12, 2020 — Arctic researchers Jacqueline Grebmeier and Lee Cooper have been visiting the Bering and Chukchi seas off Alaska for nearly 30 years, collecting information about the biological diversity of the watery world under the sea ice to understand how marine ecosystems are responding to environmental changes. This year, a late-season research cruise in October revealed a surprise. At a time of year when an ice-breaking ship is usually required to get them to some of the data-gathering outposts, scientists found nothing but open water and an unusually active ecosystem.

“The water and air temperatures were warmer, and we had ecosystem activity that normally doesn’t occur late in the season,” said University of Maryland Center for Environmental Science Research Professor Jacqueline Grebmeier, chief scientist on the research cruise and a national and international leader in Arctic research.

Grebmeier and Cooper were part of a small team of researchers from the University of Maryland Center for Environmental Science, the University of Alaska Fairbanks, and Clark University that completed an unusual late-season Arctic research cruise due travel challenges presented by COVID-19 pandemic. They found an ecosystem—expected to be powering down to low-level winter activity with sea ice forming—to be still active, likely due to unseasonably warm ocean temperatures. Sea ice formation was still a number of weeks away.

“2020 turned out to be the second lowest minimum sea ice extent, meaning that sea ice retreated back closer to the North Pole,” Grebmeier said. “We had warming water up to 3 degrees Celsius higher than typical all the way through . That means you can’t cool it down that quickly to build ice.”

Read the full story at PHYS.org

U.S. coral reefs’ health assessed for the first time on a national scale

November 11, 2020 — The following was released by NOAA:

Coral reefs in both the Pacific and Atlantic oceans received a “fair” score in the first-ever condition status report for U.S. coral reefs released by NOAA and the University of Maryland Center for Environmental Science (UMCES) today. While the overall scores were “fair,” the report highlights coral reefs are vulnerable and declining. This is the first time coral reefs in all U.S. states and territories have been assessed using standardized monitoring data, creating datasets that offer a baseline of coral health on a national scale.

The U.S. Coral Reef Condition Status Report was developed by NOAA’s National Coral Reef Monitoring Program and UMCES’s Integration and Application Networkoffsite link using data collected between 2012 and 2018. The scores are denoted as “very good,” “good,” “fair,” “impaired,” and “critical.” The report was based on four categories when assigning a score: corals and algae abundance, reef fish populations, influence of climate on coral reefs, and human connections to reefs.

“Considering the more than $3.4 billion in annual economic benefits of coral reefs, these reports and the policy actions that they will inform are critical to our American Blue Economy,” said retired Navy Rear Adm. Tim Gallaudet, Ph.D., assistant secretary of commerce for oceans and atmosphere and deputy NOAA administrator.

Coral reefs near higher density human populations are degraded, which is likely due to local stressors including land-based sources of pollution and damaging impacts from fishing.

“To conserve and restore coral reefs, we need to understand the overall condition of these  ecosystems,” said Jennifer Koss, director of NOAA’s Coral Reef Conservation Program. “This report represents a snapshot of reef condition and is a great resource for communities and decision-makers throughout the nation. We hope the report starts a dialogue about the various factors and potential solutions to the threats affecting coral reefs.”

Greatest among the threats to coral reefs is climate change, according to the report. Warmer, more acidic seawater is negatively affecting coral reefs globally, no matter how remote they are.

“These status reports clearly show the impacts people are having on coral reef ecosystems,” said Heath Kelsey, director of UMCES’s Integration and Application Network. “Our work in the Pacific and Atlantic Oceans shows a dire outlook for coral reef ecosystem health, from warming ocean waters, fishing, disease, and pollution from the land. Of all of these, climate change is the single biggest threat to shallow water coral reefs in the U.S., and worldwide.”

Read the full release here

UMCES report: Low health scores rain on Chesapeake Bay’s recovery

May 23, 2019 — A year of historically heavy rainfall strained the Chesapeake Bay’s ecosystem — but not past the breaking point, according to a wide-ranging assessment released Tuesday.

The estuary’s overall health score in 2018 dropped from 54% to 46% but retained its “C” grade for a seventh consecutive year, according to the University of Maryland Center for Environmental Science’s latest report card.

It marked the lowest grade since 2013 and reversed a streak of four years of improving or steady scores.

“We don’t have as good of news to report because of some record rainfall,” said Bill Dennison, UMCES vice president for science application. “The good news is it took a hit, but it did not crash.”

The federal government and the states within the 64,000-square-mile Bay watershed are working on a plan to reduce nutrient and sediment pollution under an agreement signed in 2010. The effort faces a 2025 deadline.

The resilience of that recovery faced one of its biggest tests last year. About 72 inches of rain inundated the Baltimore area during 2018, about 30 inches more than normal, according to the report.

From a scientific perspective, the deluge offered a glimpse of how the recovering ecosystem may respond as climate change leads to increasingly erratic weather, Dennison said.

Many scientists predicted that last year’s rains would dampen the restoration gains. The UMCES report bears out those projections, showing reductions in the scores for water clarity, nitrogen, phosphorus and aquatic grasses.

Read the full story at the Bay Journal

Healthy fisheries and aquatic grasses fuel Chesapeake Bay recovery

June 19, 2018 — Booming aquatic grasses and bellwether fisheries are driving sustained progress in Chesapeake Bay health, which experts say is finally showing “significant” overall improvement.

The 2017 Chesapeake Bay Report Card issued by Virginia and Maryland rates the estuary a C for the third straight year as recovery holds steady or improves in five of seven indicators, the James River nails a B- for the first time and the fisheries index scores its first-ever A+.

Experts call their assessment “important evidence that the positive trend in ecosystem health is real” and that cleanup efforts across the watershed are working.

“It is the first time that the … scores are significantly trending in the right direction,” said Bill Dennison at the University of Maryland Center for Environmental Science in a statement Friday. “We have seen individual regions improving before, but not the entire Chesapeake Bay.”

The UMCES compiled the report card along with the Virginia Institute of Marine Science in Gloucester Point, the Virginia Department of Environmental Quality and other governmental agencies and academic groups both in this state and Maryland. This is the 12th year of its release.

The fisheries index is comprised of the average score for blue crab, striped bass and bay anchovy indicators. These species are considered ecologically, economically and socially important to the bay.

Last year’s fisheries index was 90 percent. This year, it rose to 95 percent, the highest ever recorded for the annual reports — the average of 100 percent for striped bass and blue crab, and 84 percent for bay anchovy.

Read the full story at the Daily Press