Welcome to FIS   Sponsored By
Subscribe to FIS | Register with FIS | Advertise with FIS | Newsletter | About FIS | Contact us
   


Alaska fisheries are really important—they contributed 58% of U.S. landings and 29% of U.S. ex-vessel value

New study estimates vulnerability of Eastern Bering Sea stocks to climate change

Click on the flag for more information about United States UNITED STATES
Thursday, September 19, 2019, 21:40 (GMT + 9)

Scientists look at potential impacts of changing ocean temperatures and other environmental conditions on Alaska ecosystems.

NOAA scientists and partners have released a Climate Vulnerability Assessment for groundfish, crabs, and salmon in the Eastern Bering Sea. They looked at the potential impacts of changing climate, ocean temperatures, and other environmental conditions on 36 groundfish, crab and salmon stocks. Of these, four rockfish stocks, flathead sole and Tanner crab were determined to be the most vulnerable. Several other fish stocks were seen as potentially more resilient. This is because they may be able to move to areas with more favorable environmental conditions, such as more food and optimum water temperatures for growth and survival.

“Alaska fisheries are really important—they contributed 58% of U.S. landings and 29% of U.S. ex-vessel value in 2016, with the majority of Alaska landings and value obtained from the Eastern Bering Sea shelf,” said Robert Foy, director, Alaska Fisheries Science Center. “In the past few years water temperatures have been much warmer than average making the need for studies like this all the more imperative. Our science both in the field and in the lab is critical to monitor ecosystem changes and provide short-term and long-term forecasts to help commercial, recreational and subsistence communities anticipate and respond to changes that impact their way of life.”

Thirty-four scientists assisted with this stock analysis. They considered the likelihood of exposure to climate change, and the sensitivity and adaptability if exposed.

Researchers used existing information on climate and ocean conditions, species distributions, and species growth and development. They estimated each stock’s overall vulnerability to climate-related changes in the region.

 
Bering Sea Stock Climate Vulnerability and Exposure Risk

For evaluated stocks, the exposure risk to climate change ranged from low to moderate.

The most vulnerable Eastern Bering Sea stocks were:

  •     Pacific ocean perch.
  •     Rougheye rockfish.
  •     Shortraker rockfish.
  •     Shortspine thornyhead.
  •     Flathead sole.
  •     Tanner crab.

These stocks, and Kamchatka flounder, sablefish, giant grenadier and salmon shark, had moderate exposure to climate change.

A Pacific ocean perch (top) and blackspotted rockfish (bottom).(Source: NOAA)

“Our models projected more variability in salinity and water temperatures in the offshore ocean habitats where all of these species tend to be found, making them more vulnerable than other species which inhabit different areas,” said Paul Spencer, fisheries biologist and lead author of this study.

The scientific team classified nine flatfish stocks, crab, forage fish, rockfish, sablefish, Giant Pacific octopus, sculpins, Pacific cod and walleye “Alaska” pollock as having lower vulnerability due to their mobility.

However, additional research conducted by Alaska Fisheries Science Center scientists suggests that the story for Alaska pollock, and Pacific cod, and possibly other species is more nuanced. Field and laboratory studies on Pacific cod have shown that warmer water temperatures and lower pH levels (i.e., ocean acidification) can affect prey availability. It also affects Pacific cod egg, larvae, and juvenile development—which ultimately affects Pacific cod survival.

Fewer young fish mean fewer adult fish, and fewer fish for fishermen to catch—so there could be delayed impacts of changing climate and ocean conditions on this species.

Additional research is ongoing to better understand the implications of changing climate and ocean conditions  across the various stages of development of fish and crab stocks.


Bering Sea stock sensitivity if exposed to climate change

Scientists ranked rockfish, crab, and five of the nine flatfish stocks as having high sensitivity. This is due to low population growth rates, limited spawning cycles, and (for crab) sensitivity to ocean acidification.

Salmon also ranked high due to their limited spawning cycle, complex reproductive strategy, and limited dispersal of early life stages.

In contrast, sharks were determined to be the least sensitive to climate change. Sharks are highly vulnerable to overfishing because they produce low numbers of offspring. However, their unique life history of not having a larval stage and baring actively swimming small sharks that are opportunistic feeders may provide an advantage to coping with climate change. Another factor may be the prehistoric nature of shark species, which have survived historic climate shifts.

“These assessments, together with sophisticated regional models that include a variety of ecosystem and climate information are valuable tools for helping us better understand, anticipate and respond to current and projected changes in the marine environment,” said Roger Griffis, NOAA Fisheries Climate Coordinator.


[email protected]
www.fis.com


 Print


Click to know how to advertise in FIS
MORE NEWS
New Zealand
Oct 18, 22:00 (GMT + 9):
Mussel breeding programme expected to generate USD 126m a year
United Kingdom
Oct 18, 19:00 (GMT + 9):
Brexit agreement is gateway to UK’s exit from CFP
Worldwide
Oct 18, 17:00 (GMT + 9):
Weekly movements of fishmeal and fish oil (Norway, China, Peru) - W41
Norway
Oct 18, 16:50 (GMT + 9):
Export movements of Atlantic salmon - W41
United Kingdom
Oct 18, 07:00 (GMT + 9):
New tool offers interactive look at seafood environmental and social perfomance
United Kingdom
Oct 18, 06:00 (GMT + 9):
Regional strategy seeks to help East Anglia revive its fisheries after Brexit
United States
Oct 18, 05:10 (GMT + 9):
Federal court rules expansion of Washington industrial shellfish aquaculture 'unlawful'
Guyana
Oct 18, 03:50 (GMT + 9):
WWF presents five-year sustainable marine fisheries management plan
Canada
Oct 18, 00:20 (GMT + 9):
Oceana´s investigation reveals widespread seafood fraud in Canada (Video)
United Kingdom
Oct 17, 23:00 (GMT + 9):
UK and Faroe Islands sign fisheries agreement
Peru
Oct 17, 22:50 (GMT + 9):
Giant squid exports expected to grow 20% this year
Chile
Oct 17, 22:30 (GMT + 9):
Osorno court condemns Multiexport Foods subsidiary for contaminating Rupanco Lake
Canada
Oct 17, 22:20 (GMT + 9):
New tool can help lobster fishery adress impacts of climate change
Indonesia
Oct 17, 19:50 (GMT + 9):
Consortium of companies seal cooperation agreement with Norwegian company on fish farming
United Kingdom
Oct 17, 19:00 (GMT + 9):
IN BRIEF - Sawfish numbers in global stronghold are dropping, prompting calls for fishing protection



Lenguaje
FEATURED EVENTS
  
TOP STORIES
Chinese vessel fined USD 1 million for illegal fishing
Ghana Owners of the Chinese fishing vessel, Lu Rong Yuan Yu 956 will have to pay a USD1 million fine for illegal fishing in Ghana and additional USD 22,700 (GHS 124,000) for having fish onboard. The Chines...
Reports show EU countries have not enforced fish discard ban
European Union Three major European countries have not enforced the EU ban on fish discards, threatening the sustainability of European fish stocks. Environmental lawyers from ClientEarth have released three report...
Government rejects inaccurate statements about unilateral increase of jack mackerel quota
Peru The Ministry of Production says that the quota of 138,000 tons of jack mackerel applies to waters under national jurisdiction and is therefore not set by the OROP-PS The SPRFMO set...
EC pushes for long-term sustainability of Baltic stocks at AGRIFISH Council
European Union Fisheries ministers are meeting at the AGRIFISH Council in Luxembourg on 14 and 15 October to reach a political agreement on the Baltic fishing opportunities for 2020. Karmenu Vella, Commissioner for ...
 
Maruha Nichiro Corporation
Nichirei Corporation - Headquarters
Pesquera El Golfo S.A.
Ventisqueros - Productos del Mar Ventisqueros S.A
Wärtsilä Corporation - Wartsila Group Headquarters
ITOCHU Corporation -Headquarter-
BAADER - Nordischer Maschinenbau Rud. Baader GmbH+Co.KG (Head Office)
Inmarsat plc - Global Headquarters
Marks & Spencer
Tesco PLC (Supermarket) - Headquarters
Sea Harvest Corporation (PTY) Ltd. - Group Headquarters
I&J - Irvin & Johnson Holding Company (Pty) Ltd.
AquaChile S.A. - Group Headquarters
Pesquera San Jose S.A.
Nutreco N.V. - Head Office
CNFC China National Fisheries Corporation - Group Headquarters
W. van der Zwan & Zn. B.V.
SMMI - Sunderland Marine Mutual Insurance Co., Ltd. - Headquarters
Icicle Seafoods, Inc
Starkist Seafood Co. - Headquearters
Trident Seafoods Corp.
American Seafoods Group LLC - Head Office
Marel - Group Headquarters
SalMar ASA - Group Headquarters
Sajo Industries Co., Ltd
Hansung Enterprise Co.,Ltd.
BIM - Irish Sea Fisheries Board (An Bord Iascaigh Mhara)
CEFAS - Centre for Environment, Fisheries & Aquaculture Science
COPEINCA ASA - Corporacion Pesquera Inca S.A.C.
Chun Cheng Fishery Enterprise Pte Ltd.
VASEP - Vietnam Association of Seafood Exporters & Producers
Gomes da Costa
Furuno Electric Co., Ltd. (Headquarters)
NISSUI - Nippon Suisan Kaisha, Ltd. - Group Headquarters
FAO - Food and Agriculture Organization - Fisheries and Aquaculture Department (Headquarter)
Hagoromo Foods Co., Ltd.
Koden Electronics Co., Ltd. (Headquarters)
A.P. Møller - Maersk A/S - Headquarters
BVQI - Bureau Veritas Quality International (Head Office)
UPS - United Parcel Service, Inc. - Headquarters
Brim Ltd (formerly HB Grandi Ltd) - Headquarters
Hamburg Süd Group - (Headquearters)
Armadora Pereira S.A. - Group Headquarters
NOAA - National Oceanic and Atmospheric Administration (Headquarters)
Mowi ASA (formerly Marine Harvest ASA) - Headquarters
Marubeni Europe Plc -UK-
Findus Ltd
Icom Inc. (Headquarter)
WWF Centroamerica
Oceana Group Limited
The David and Lucile Packard Foundation
Ajinomoto Co., Inc. - Headquarters
Friosur S.A. - Headquarters
Cargill, Incorporated - Global Headquarters
Benihana Inc.
Leardini Pescados Ltda
CJ Corporation  - Group Headquarters
Greenpeace International - The Netherlands | Headquarters
David Suzuki Foundation
Fisheries and Oceans Canada -Communications Branch-
Mitsui & Co.,Ltd - Headquarters
NOREBO Group (former Ocean Trawlers Group)
Natori Co., Ltd.
Carrefour Supermarket - Headquarters
FedEx Corporation - Headquarters
Cooke Inc. - Group Headquarters
AKBM - Aker BioMarine ASA
Seafood Choices Alliance -Headquarter-
Austevoll Seafood ASA
Walmart / Wal-Mart Stores, Inc. (Supermarket) -Headquarter-
New Japan Radio Co.Ltd (JRC) -Head Office-
Gulfstream JSC
Marine Stewardship Council - MSC Worldwide Headquarters
Royal Dutch Shell plc (Headquarter)
Genki Sushi Co.,Ltd -Headquarter-
Iceland Pelagic ehf
AXA Assistance Argentina S.A.
Caterpillar Inc. - Headquarters
Tiger Brands Limited
SeaChoice
National Geographic Society
AmazonFresh, LLC - AmazonFresh

Copyright 1995 - 2019 Fish Info & Services Co.Ltd| All Rights Reserved.   DISCLAIMER