Saving Seafood

What Fish Fat Can Tell About the Value of Deep-Sea Coral and Sponge Habitat

September 22, 2021 — Rockfish have an affinity for structure, whether it is created by rocks, corals, or sponges. But do deep-sea coral and sponge ecosystems offer benefits beyond structure? Are fish in these habitats more productive?

A new NOAA Fisheries study is the first to look at the relationship between fish condition and reproductive success in a variety of habitats, focusing on deep-sea coral and sponge ecosystems. As part of the study, scientists are developing methods to accurately assess rockfish condition by measuring fat content. For rockfish in Alaska, fat means healthy.

The study looked at the most commercially important rockfish in the Gulf of Alaska and Aleutian Islands: northern rockfish and Pacific ocean perch. Samples are being collected during 2021–2022 Alaska Fisheries Science Center bottom trawl surveys.

The research addresses a priority of the North Pacific Fishery Management Council: understanding the importance of deep-sea coral and sponge ecosystems to commercially valuable fish.

“Developing a feasible method to accurately measure fish condition across  Alaska waters during annual surveys will provide a wealth of data to help us understand how habitat influences fish productivity. That knowledge will also help us track how climate change is affecting the ecosystem,” said study leader Christina Conrath, NOAA Fisheries biologist at the Alaska Fisheries Science Center.

The new project is part of NOAA’s Alaska Deep-Sea Coral and Sponge Initiative, which is supported by the Deep Sea Coral Research and Technology Program. The initiative was established to provide the scientific data needed to inform management and protection of deep-sea coral and sponge ecosystems in Alaska. Discoveries made previously and under this initiative have greatly advanced our knowledge of corals and sponges and their role in Alaska marine ecosystems.

Rockfish in Alaska waters are frequently found in coral and sponge habitat. Previous Alaska Fisheries Science Center research found that rockfish densities were highest in structurally complex habitat. But that research showed no evidence that structure created by corals and sponges was more important than that formed by rocks.

“We know that rockfish get value from structure. But we don’t really have evidence yet that coral and sponge habitat offers benefits beyond structure,” Conrath said. “We’re exploring that.”

Read the full story from NOAA

 

Multi-Year Effort to Observe Seafloor Habitats and Learn More about Deep-sea Corals and Sponges in Alaska

August 10, 2021 — The following was released by NOAA Fisheries:

To learn more about deep-sea communities in the sub-Arctic waters of Alaska, NOAA Fisheries is implementing a four-year science initiative. Research teams will collect new information that will contribute to the management and protection of deep-sea coral and sponge ecosystems throughout Alaska.

Corals and sponges are found throughout Alaska’s rich marine waters—the Aleutian Islands have some of the densest and most diverse coral and sponge communities in the world. However, their full geographic extent is still unknown.

This is due in part to the vastness of Alaska’s exclusive economic zone. These offshore waters encompass an area greater than the combined EEZ of all the other U.S. continental states. As a result, approximately 72 percent of Alaska’s waters have yet to be thoroughly mapped with sonar.

“It’s really important that we conduct this research now. So much of the sub-Arctic and Arctic is changing due to climate change and we know so little about these seafloor communities and valuable fish and crab habitats,” said Jerry Hoff, the lead scientist for this effort, who is based at the Alaska Fisheries Science Center.

Read the full release here

NOAA’s Exploration and Research Efforts Inform Management Decisions for Deep-Sea Coral Communities

July 29, 2021 — The following was released by NOAA Fisheries:

NOAA’s Deep Sea Coral Research and Technology Program is participating virtually in NOAA Ocean Exploration’s current expedition to map and explore the New England and Corner Rise seamounts in the high seas (or international waters) of the North Atlantic. Equipped with a remotely operated vehicle and telepresence technology, the team aboard NOAA Ship Okeanos Explorer transmits video data in real time to shore-based scientists who help to guide the exploration and contribute their expertise during dives.

The data collected from NOAA’s deep-sea exploration and research efforts improve our scientific understanding of the diversity and distribution of deep-sea coral communities. This information will guide future exploration activities in the region. It will also aid resource managers in developing and evaluating management options for these valuable habitats—on which U.S. fisheries and communities depend.

Seamounts Are Habitat for Deep-Sea Corals

The New England and Corner Rise seamounts form chains of rocky underwater islands. During the expedition, researchers have found an abundance of corals and sponges on the slopes of most seamounts. While diving on the Rockaway Seamount at a depth of approximately 2.6 miles (4,200 meters)—one of the deepest dives ever conducted in the region—the team observed a greater abundance of corals and sponge life than expected. These particular seamount chains may be hot spots of biological diversity for deep-sea corals and sponges.

Deep-sea corals and sponges create structurally complex habitats that support rich and vibrant communities of other species. Most deep-sea corals grow extremely slowly, and if damaged, they may take centuries to recover, if they recover at all. Deep-sea coral communities are vulnerable to damage from certain fishing gear, some energy exploration and development, cable deployment, and other activities that disturb the seafloor. Of the human activities that threaten deep-sea coral habitat, seafloor trawling is widely considered to have the greatest potential for damage. The Northwest Atlantic Fishery Organization has recognized the New England and Corner Rise seamounts as vulnerable marine ecosystems and closed them to bottom fishing.

Read the full release here

New coral protections off New England take effect this month

July 19, 2021 — New coral protections are scheduled to take effect in the waters off New England later this month.

The National Marine Fisheries Service has published new rules designed to protect corals on Georges Bank and in the Gulf of Maine. Those are two key commercial fishing areas off the New England coast.

The new protections take effect on July 26. One of the new rules establishes the Georges Bank Deep-Sea Coral Protection Area, which is located on the outer continental shelf in New England waters.

Read the full story at the Associated Press

Reminder: Coral Protection Areas on Georges Bank and in the Gulf of Maine

July 12, 2021 — The following was released by NOAA Fisheries:

On June 25,  NOAA Fisheries published a final rule to designate coral protection areas on Georges Bank and in the Gulf of Maine.  This action becomes effective on July 26.

This action:

  • Establishes the Georges Bank Deep-Sea Coral Protection Area. This area is on the outer continental shelf in New England waters. It complements the Frank R. Lautenberg Deep-Sea Coral Protection Area established by the Mid-Atlantic Fishery Management Council in January 2017.
  • Prohibits bottom-tending commercial fishing gear (with the exception of red crab pot gear) in the Georges Bank Coral Protection Area to protect deep-sea corals.
  • Designates the Mount Desert Rock and Outer Schoodic Ridge Coral Protection Areas in the Gulf of Maine. Vessels are prohibited from fishing with bottom-tending mobile gear in these areas. Vessels are still able to fish for lobster in these areas using trap gear.
  • Designates the Jordan Basin Dedicated Habitat Research Area in the Gulf of Maine as a dedicated habitat research area.

Read the full release here

MAINE: New coral protections set for areas off MDI

June 28, 2021 — A new rule from federal regulators last week creates thousands of miles of “deep sea coral protection areas” in the Gulf of Maine, including two off Mount Desert Island and on Georges Bank.

The new rule designates a coral protection area in an 8-square-mile area southwest of Mount Desert Rock – a small, rocky island about 20 nautical miles south of Mount Desert Island. Vessels are prohibited from fishing with bottom-tending mobile gear in the area, though vessels will still be able to fish for lobsters using trap gear.

The Outer Schoodic Ridge Coral Protection Area will be a 31-square-mile protected zone about 25 miles southeast of the island, with the same restrictions as Mount Desert Rock.

The new rule also establishes a protection area of 25,000 square miles on the Georges Bank outer continental shelf, south of Cape Cod.

Read the full story at the Mount Desert Islander

Deep Sea Corals Off Coastal Maine Get Permanent Protection

June 24, 2021 — Fisheries regulators in the Northeast are permanently putting some 25,000 square miles of seafloor off-limits to some types of commercial fishing, in an effort to protect sensitive deep-sea corals.

The National Oceanic and Atmospheric Administration issued a final rule this week that bars mobile bottom-trawling gear from vast deep-sea areas along the outer continental shelf off New England and in some smaller areas closer to Maine’s coast.

“The deep sea corals have a very fragile skeleton, and can be broken or displaced with a single pass of these nets, and they won’t recover,” says Gib Brogan, who directs advocacy campaigns for the international group, Oceana.

Brogan says the areas in question don’t see many trawlers right now – but the NOAA designations mark a proactive effort to ward off damaging fishing practices that have emerged elsewhere.

“Looking for other species that are not part of the fisheries in the U.S. There’s a particular piece of gear called a “canyon-buster door” that was specifically engineered to go fishing in the deep water canyons where the corals are growing,” Brogan says.

Read the full story at Maine Public

NMFS enacts ocean-bottom protections for Gulf of Maine corals

June 22, 2021 — The National Marine Fisheries Service (NMFS) has enacted the New England Fishery Management Council’s Omnibus Deep-Sea Coral Amendment, effectively protecting deep-sea corals in an area roughly 25,000 square miles in size.

The amendment was first approved on 20 November, 2019, after the council developed the action and the NFMS approved it. The final rule, published 21 June, implements the amendment, which prohibits the use of all bottom-tending gear – with the exception of red crab pots – along “the outer continental shelf in waters no shallower than 600 meters to the exclusive economic zone,” the final rule states.

Read the full story at Seafood Source

Northeast coral protection rule finalized

June 22, 2021 — A final rule setting aside coral protection areas on Georges Bank and in the Gulf of Maine was finalized Monday by NMFS, prohibiting the use of bottom-tending fishing gear with exceptions for red crab pots on Georges and lobster pots in the gulf.

The rule was developed by the New England Fishery Management Council after years of consideration with public comment and debate over balancing protection with sustainable long-term fisheries uses. Northeast cold-water corals are an important part of habitat for many fish and invertebrate species, including commercially important fish, according to NMFS.

The Mid-Atlantic Fishery Management Council went through a similar process before establishing the Frank R. Lautenberg Deep-Sea Coral Protection Area – named for the late New Jersey senator, a sponsor of ocean environmental legislation – in January 2017. The new Georges Bank protection area abuts the northeast edge of that zone on the outer continental shelf.

The Georges Bank Deep-Sea Coral Protection Area runs along the outer continental shelf in waters no shallower than 600 meters (1,968 feet) and extends to the outer limit of U.S. exclusive economic zone boundary to the east and north. The rule restricts use of bottom-tending commercial fishing gear to protect deep-sea corals from damage. Red crab pot gear is specifically exempt from the prohibition.

Read the full story at National Fisherman

New coral protections coming to areas off New England

June 22, 2021 — Federal regulators have signed off on new protections for thousands of square miles of deep-sea corals off New England.

The National Oceanic and Atmospheric Administration said Monday it has approved a final rule that designates the coral protection areas on Georges Bank and in the Gulf of Maine. The largest of the underwater areas is called the Georges Bank Deep-Sea Coral Protection Area and it is located mostly southeast of Cape Cod, Massachusetts.

The protected zone places prohibitions on bottom-tending commercial fishing gear, with the exception of certain kinds of crab traps, NOAA officials said. It also creates a dedicated habitat research area called the Jordan Basin Dedicated Habitat Research Area south of the Maine coast.

NOAA said in a statement that the corals are “important sources of habitat for many species of fish and invertebrates, including commercially important fish species.”

Read the full story from the Associated Press at WRAL