Saving Seafood

NOAA: Scientists Monitor Coral Reef Ecosystems Throughout the Hawaiian Archipelago

April 22, 2019 — The following was published by NOAA Fisheries:

Our scientists and managers depend on research surveys to monitor the status and trends of the coral reef ecosystems across the Hawaiian Archipelago over time. Coral reefs around the globe, including Hawaiʻi, are threatened by climate change, disease, land-based sources of pollution, and unsustainable fishing practices.

During expeditions this spring and summer, teams of scientific divers from NOAA’s Pacific Reef Assessment and Monitoring Program will assess reef fish and corals in the context of changing environmental conditions. They will collect images of the ocean floor to create 3D models of the reefs. The abundance and distribution of reef fish and coral reef organisms are used to characterize the conditions and integrity of our coral reef ecosystems. Over time, we can see how they have changed—an important part of managing and conserving reef-associated life in the region.

This expedition marks the 20th anniversary of the Pacific Reef Assessment and Monitoring Program’s inception in 2000, and will be conducted using the NOAA Ships Oscar Elton Sette and Rainier. We will add our research this season to collections from baseline monitoring surveys across the Pacific and in Hawaiʻi in 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2008, 2010, 2013, and 2016.

Study Locations

The Sette will survey the main Hawaiian Islands: Kauaʻi, Niʻihau, Maui, Lānaʻi, Molokaʻi, Kahoʻolawe, Oʻahu, and the island of Hawaiʻi. The Rainier will survey portions of the Papahānaumokuākea Marine National Monument in the remote Northwestern Hawaiian Islands: French Frigate Shoals, Lisianski/Neva Shoals, Pearl, and Hermes Atoll, and Kure Atoll. At each site, the ships will deploy small boats to reach study areas, including locations along the leeward and windward exposures, near the channels between islands, and in forereefs, backreefs, and lagoons.

Of particular note, our researchers are fortunate to return to the protected island of Kahoʻolawe, where few people have access. Kahoʻolawe was once a bombing range for the U.S. Navy, and it is now an island reserve under the state of Hawaiʻi.

Following our initial visit in 2016, this expedition is the second time that our program will survey the reef systems of Kahoʻolawe. Those surveys found that the reefs in certain areas were in good condition, and roving predators such as jacks were abundant when compared with other sites around the main Hawaiian Islands.

Research Methods

As the threats to coral reefs and marine ecosystems grow, our researchers lean more heavily on digital imaging to increase our monitoring capabilities.

We create a mosaic (2D) and 3D model of an area using structure from motion, a photogrammetry technique (mapping using the distance between objects). It estimates 3D structures by aligning 100s to 1000s of overlapping images.

Combining seafloor images to create 3D models of large areas of reef tract is a process called “structure-from-motion” photogrammetry, which is a new effort for our program. During this mission, we will conduct structure-from-motion surveys across the archipelago to measure the density, surface area, partial mortality, and health of corals. Our team will conduct structure-from-motion surveys at fixed stations to assess the growth, mortality, and recruitment of individual coral colonies, which will provide valuable information on the resilience of coral reefs to local and global threats.

Scientists aboard the Sette and Rainier will measure water temperature, salinity, carbonate chemistry, and other physical characteristics of the coral reef environment with an assortment of oceanographic monitoring instruments. Researchers will assess the potential early effects of ocean acidification on coral reef growth with calcification accretion units and bioerosion monitoring units.

This story was originally posted by NOAA Fisheries

California Considers Sport Crab Fishery for Action Relating to Whale Entanglement

April 19, 2019 — The California Fish and Game Commission is proactively working to avoid further whale entanglements — and further lawsuits.

On Wednesday the Commission approved the Marine Resources Committee to take up the issue of recreational crab fishing, and possibly other fixed gear fisheries, and its potential to entangle whales. The commercial fleet early on questioned why other fisheries, particularly sport fisheries, were not subject to the same scrutiny as the commercial sector.

The commercial season closed earlier this week, on April 15, as part of a settlement agreement between the Center for Biological Diversity, the California Department of Fish and Wildlife and the Pacific Coast Federation of Fishermen’s Associations, which intervened on the case.

CDFW Director Charlton “Chuck” Bonham said during the introduction that, despite a lot of the rhetoric, the increase in whale entanglements in 2015 and 2016 were examples of the real-life impacts of climate change. While the commercial crab season was delayed for months due to elevated levels of domoic acid, whales also ventured closer to shore in search of prey species. Both of those events were linked to warmer ocean waters.

Bonham said during the progression of the lawsuit, the department concluded the judge was likely to rule against the state. Had that happened, the court could have become a “special master” of the crab fishery, he said, and that inserting a federal judge in the management of the fishery wouldn’t make it any easier.

Thus, the state proceeded with settlement discussions between all three parties and began working with NOAA to establish a habitat conservation plan for the whales and get an incidental take permit for the fishery. The process could take up to two years. In the meantime, for some areas, particularly south of Mendocino County, the commercial fishery is scheduled to close on April 1.

The state also is accelerating its rulemaking activities relative to gear, furthering its gear retrieval program, restricting buoy and line configurations and furthering support for the Dungeness Crab Fishing Gear Working Group, Bonham said.

However, there’s also an equity issue, he said.

“It’s time to think about a refined approach to how we manage fixed gear in the water,” noting that recreational crab fishing could have similar issues with whale entanglements as the commercial crabbers have had.

PCFFA Executive Director supported the director’s comments.

“You can’t overstate the impact,” Oppenheim said of the effect on commercial fishermen and processors. “[It was] a seismic shock to our industry.”

The confidential nature of the settlement discussions did not allow any of the parties to discuss potential solutions with the broader fleet, leaving many crabbers frustrated when the agreement was finally disclosed. The fleet had less than a month to remove their gear from the water.

Oppenheim described the past few months as the worst period of his professional career, but it pales in comparison to the livelihoods of his members, he said. Many fishermen are losing the spring fishery on which they depend. Others had to delay their fishing seasons due to elevated levels of domoic acid, so the early closure only made things worse.

Now, recreational fishermen and other fixed gear fishermen may face the same quandary. Entanglements in other fisheries could have an impact on the settlement agreement.

Sport fishermen noted there are vast differences between commercial and sport crabbing gear and sport fishermen should not be subject to the same settlement agreement.

It’s manifestly unfair to apply that settlement on parties who had no representation to the discussion, said George Osborne, a lobbyist for the Coastside Fishing Club. Osborn said the club insists that any management measures on recreational crabbers be proportionate to the degree that anglers may be contributing to the whale and turtle entanglements.

Commission President Eric Sklar said the commission and managers recognize the differences between the fisheries.

The Marine Resources Committee will continue the discussion when it meets on July 11.

This article was republished with permission from SeafoodNews.com

REMINDER: April 23 Webinar on Fishery Allocation Under Climate Change

April 19, 2019 — The following was released by the Lenfest Ocean Program:

How should harvest of valuable fish stocks be allocated as populations shift due to climate change? What lessons can be learned from the management practices in other regions and nations to inform allocation strategies for shifting stocks along the U.S. Northeast and Mid-Atlantic coasts? On Tuesday, April 23, at 2:00 PM Eastern time/11:00 AM Pacific time the Lenfest Ocean Program will host a webinar featuring Dr. Andrew Pershing, Dr. Lisa Kerr, Mr. Jonathan Labaree, and Dr. Kanae Tokunaga, all of the Gulf of Maine Research Institute, to discuss their project characterizing different fishery allocation systems from around the world and their potential for application in the U.S. Download the fact sheet to learn more about this project.

Click here to register

Webinar Instructions:

  • Date: Tuesday, April 23, 2019
  • Time: 2:00 PM Eastern time/11:00 AM Pacific time

For remote access:

  • Please fill out the registration form before the event is scheduled to begin.
  • Event number: 791 597 316
  • Event password: StockShifts2019

For teleconference audio after you join the webinar, either:

  1. Select “Call Using Computer”
  2. Select “Call me” and provide your phone number
  3. Call the number below and enter the access code:
    1. In the U.S. and Canada, dial 1-855-214-7745.
    2. For additional global call in numbers click here.
  4. Enter conference code 396 957 5461
  5. After dialing the conference code:
    1. Be sure to enter the Attendee ID that will appear on your screen.
    2. You will not be prompted to do so

Pace of Bering Sea Changes Startles Scientists

April 15, 2019 — The Yupik Eskimo village of Kotlik on Alaska’s northwest coast relies on a cold, hard blanket of sea ice to protect homes from vicious winter Bering Sea storms.

Frigid north winds blow down from the Arctic Ocean, freeze saltwater and push sea ice south. The ice normally prevents waves from forming and locks onto beaches, walling off villages. But not this year.

In February, southwest winds brought warm air and turned thin sea ice into “snow cone ice” that melted or blew off. When a storm pounded Norton Sound, water on Feb. 12 surged up the Yukon River and into Kotlik, flooding low-lying homes. Lifelong resident Philomena Keyes, 37, awoke to knee-deep water outside her house.

“This is the first I experienced in my life, a flood that happened in the winter, in February,” Keyes said in a phone interview.

Read the full story at NBC Los Angeles

Oregon lawmakers propose bill providing millions in funding for climate change research

April 15, 2019 — Oregon state lawmakers are proposing a bill which would provide nearly USD 2 million (EUR 1.7 million) to study and respond to the effects of rising ocean temperatures, low oxygen levels, and ocean acidification, according to a report in the Statesman Journal last week.

Thirty percent of man-made carbon dioxide is absorbed by the ocean, which causes the water to become more acidic, the report said. The change in ocean pH levels has made it difficult for animals like crabs, oysters, and shrimp to make their shells, which could be a blow to the state’s shellfish industry.

Senate Bill 260 would provide USD 1.9 million (EUR 1.68 million) from the state’s general fund to respond to the problems caused by climate change.

If the bill passes, the state’s Department of Fish and Wildlife would receive USD 470,000 (EUR 415,799) to map and assess estuaries – most existing research on acidification and hypoxia (low oxygen levels) has been done offshore.

Oregon State University would receive USD 370,000 (EUR 327,347) to conduct projects concerning shellfish breeding and ocean sampling and monitoring.

The Oregon Ocean Science Trust would receive the lion’s share of the funding, USD 1.06 million (EUR 937,727), which would be used for seven different projects, including modeling of aquatic vegetation, acidification and hypoxia monitoring, and a communications plan.

Read the full story at Seafood Source

Managing recreational fisheries alongside commercial fisheries

April 15, 2019 — The following is an excerpt from an article published by Sustainable Fisheries UW:

Arlinghaus et al. 2019, an article in last week’s Proceedings of the National Academy of Sciences, outlined a 5-step plan for integrating recreational fishing into commercial fishery management. In the paper, scientists called for reforms on both the commercial and recreational side to produce better overall sustainability.

Recognizing recreational fishers

I write a lot about fisheries as food. Essentially, the entire point of commercial fisheries is to provide food; but with the massive scale of industrial harvest, it’s easy to forget that fish provide other benefits (like leisure and recreation) that have important economic and social outcomes. Recreational fishing provides jobs and income for tens of thousands of people and enjoyment for millions. Around 10% of people in developed nations fish for pleasure, amounting to over 200 million people worldwide.

Recreational vs commercial fishing

Recreational fishers outnumber commercial fishers 5 to 1, yet commercial fishing brings in 8x the amount of fish. Naturally, this disparity creates resentment between the two sides and conflict is not unusual, e.g. Atlantic striped bass. Arlinghaus et al. 2019 proposes a 5-point framework for integrating recreational fishing into commercial management that will hopefully lead to conflict resolution and improved sustainability.

“Even countries with strong governance for fisheries fail to integrate angling into their fisheries and conservation management system effectively. We are convinced that fisheries management and conservation measures would be more effective if the interests of anglers were given equal consideration to those of commercial fishers and other stakeholders,” stated the lead author of the study, Robert Arlinghaus, explaining his expectations of the reform process.

Read the full story at Sustainable Fisheries UW

Why climate change could mean more disease for marine aquaculture

April 15, 2019 — Extreme weather events and changing ocean conditions are creating unpredictable outcomes for aquaculture. One area where research is offering some insight into what to expect, though, is the increasing incidences of disease.

Anyone who was in France in the summer of 2018 can attest to the searing temperatures that swept the country. From north to south, the nation experienced the second hottest summer since records began. Whilst children played in lakes and the sea to cool off, the shellfish producers of Étang de Thau could only watch as their oysters and mussels perished at the hands of malaïgue – a period of sustained high temperatures and little wind.

The ocean has always been a highly dynamic environment, with its ever-changing conditions presenting challenges to aquaculturalists. However, thanks to human-induced climate change and continuing carbon emissions, events like malaïgue may become more regular occurrences, bringing with them new disease-related challenges.

As every aquaculturalist knows, temperature plays a major role in the growth and health of aquatic species. Certainly, higher temperatures are typically related to higher energetic requirements and demand for food. In an interesting twist, finfish can find their hunger suppressed when held at the upper end of their thermal tolerance for too long – even though their metabolic demands continue to rise. Malnourished fish make for unhealthy fish, which makes for a more stressed and susceptible animal.

Temperature doesn’t just impact farmed animals. As work from Dr Tommy Leung, a parasitologist at the University of New England in Australia has shown, temperature also appears to have a relationship with the severity and duration of disease outbreaks. “If you are in a more temperate region, you might have an outbreak where half of your stock die whereas in the tropics you have over 90 percent dying,” Leung explained. To compound the problem, outbreaks in those warmer tropical and near-tropical regions also happen over a much shorter period. “This means you could have less time to respond to any potential outbreak.”

Read the full story at The Fish Site

Lawmakers propose new funding to study Oregon’s warming ocean, threats to fishing industry

April 10, 2019 — The Pacific Ocean off Oregon has been ground zero for the impacts of climate change, beginning with a 2007 crisis in the state’s oyster industry.

Since then, acidification and hypoxia events off Oregon’s coast have been increasing, scientists say.

Now, state lawmakers are weighing a bill aimed at understanding and countering those impacts, which have the potential to decimate the state’s crab, shrimp, and shellfish industries.

Senate Bill 260 would allocate $1.9 million from the state general fund toward various projects to monitor and respond to a warming Pacific.

Read the full story at the Salem Statesman Journal

State of Alaska petitions federal government to delist Arctic ringed seals under the Endangered Species Act

April 9, 2019 — In the latest chapter of an ongoing debate over the status of Arctic ringed seals, the state of Alaska has petitioned the federal government to take the seals off the list of threatened species under the Endangered Species Act.

Ringed seals were added to the list back in 2012 because their sea ice habitat is expected to decline significantly in the coming years as the Arctic warms. A species can be designated “threatened” under the Endangered Species Act if it’s likely to become endangered in the foreseeable future through much of its range.

But in its petition, the state says that new research and re-analysis of prior data shows that ringed seals are doing well despite documented sea ice loss, and are likely to adapt to changing habitat conditions.

“They’re the most abundant marine mammal in the Arctic, there’s millions of them, and they’re a very resilient marine mammal as far as we can tell,” said Chris Krenz, the wildlife science coordinator for the Alaska Department of Fish and Game.

Krenz said that the “threatened” designation could create hindrances for oil and gas development, as well as for subsistence hunters.

Three North Slope entities are listed as partners in the state’s petition: the North Slope Borough, Arctic Slope Regional Corporation, and the Iñupiat Community of the Arctic Slope.

Subsistence hunting is generally exempt from restrictions under the Endangered Species Act, although the government can put regulations in place if they find that a hunt materially and negatively affects a species protected by the act. There are currently no such regulations for ringed seals, and federal government officials say there are no plans to put any in place.

Read the full story at KTOO

NEW JERSEY: Whales in the bay? It’s rare, but happening thanks to a surge in these fish off Cape May

April 9, 2019 — Jeff Stewart clearly remembers one of the last times humpback whales descended on the Delaware Bay.

It was 1990 and there was an abundance of bunker in the waters, a type of forage fish that whales eat that are also called menhaden, said Stewart, captain of the Cape May Whale Watcher.

Those same conditions are bringing the cetaceans to the bays from Town Bank to Cape May Point yet again, he said.

Marine biologists say a combination of warming waters and an increasing bunker population in the south is bringing more of the fish to New Jersey’s coast — and in turn luring whales to bay habitats they normally don’t swim in.

“There’s a ton of (bunker) right now. I’d definitely say it’s above average, to see it this early and in these quantities,” Stewart said.

Typically, the whales are found 20 miles offshore in the ocean, Stewart said, but last week, one of his captains spotted a humpback whale in the bay about 1½ miles off Cape May’s coast. Another was found in the bay Sunday morning about 100 yards out.

The tour agency, founded in 1993, started taking people out to sea again for the season last month. Stewart said more bottlenose dolphins are also in the waters as a result of increased bunker.

Read the full story at the Press of Atlantic City