Eastern Bering Sea Shelf Survey - Post 12

August 10, 2017

This survey collects important information on the status and trends of commercially important fishes, crabs, and other species.

Shells, Eastern Bering Sea Survey

Sweating the Small Stuff

For the eastern Bering Sea shelf bottom trawl survey, our goal is to learn as much as we can about the distribution and abundance of commercially valuable fish and crab species. Collected information is used to monitor the health of their populations and provide managers with needed information to ensure the sustainable use of these important marine resources. But we don’t just collect information on commercial species. We identify and collect data on everything we encounter. Monitoring the distribution and abundance of all collected species is invaluable for providing us with information about the general health of the marine community as a whole. It also gives us insights into interactions between the environment and the marine food web.

As we begin the northern Bering Sea survey, our primary focus is on understanding how the different bottom dwellers are responding to a changing marine environment. We also use this opportunity to collect important biological and genetic information on species for which we have little information because we have only been able to survey this area once in the past. If we are able to conduct this survey every other year, we can start to see patterns and trends in how individual species and the ecosystem as a whole may be responding to changes over time.

Two types of lyre crab, Hyas lyratus (left) and Hyas coarctatus (right).

Two types of lyre crab, Hyas lyratus (left) and Hyas coarctatus (right).

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Four species of hermit crab, from left to right: Pagurus trigonocheirusPagurus aleuticasPagurus confragosus, and Pagurus rathbuni.

Feathered Friends

We had an unexpected visitor the other day. A black-legged kittiwake (who we named "Amelia") hitched a ride with us by landing in the deck bin. It isn't unusual for the boat to be followed by flocks of hungry seabirds looking for an opportunistic snack, so we are constantly shadowed by seagulls, fulmars, kittiwakes, albatrosses, and petrels.

The issue for our friend is that as the boat travels, the air cavitates around the railings and makes it difficult for a grounded bird to take off again. Fortunately, we have an expert bird handler on board in Crystal Peterson from the International Pacific Halibut Commission.

Crystal carefully approached the nervous Amelia and gently picked her up, walked her to the railing and provided her with enough lift to return to the skies.

It's hard to tell one kittiwake from another in the throng of birds around us, but we like to think one of them winks at us every now and then. Fair winds, Amelia!

black-legged kittiwake

Crystal Peterson (IPHC) helps a black-legged kittiwake on its way. 

Eastern Bering Sea Survey Graph

The map shows the sampling grid for the 2017 eastern and northern Bering Sea shelf bottom trawl survey (June 1 and August 30, 2017). The eastern Bering Sea shelf was completed on July 31, 2017. During survey operations in the northern Bering Sea, the map will be updated daily to show the stations that will be sampled on the current day by the FV Vesteraalen (star with V) and the FV Alaska Knight (star with A) Bottom temperature (°C) in each 20x20 nautical mile grid cell will be colored in as the survey progresses. 

Meet the Bloggers

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Bob Lauth

Bob Lauth has been a Fisheries Research Biologist for the NOAA Alaska Fisheries Science Center in Seattle for 26 years. Bob leads the Bering Sea Group, which is responsible for conducting summertime surveys of bottom fishes, crabs, and other bottom-dwelling creatures in the offshore marine waters of Alaska. Fascinated by Jacques Cousteau as a kid, Bob moved from Chicago to the 'ever-green' Seattle in 1980 to become a marine biologist without the slightest idea how to earn a living. After working three years in a dive store, teaching scuba diving, and doing marine field trips with school kids in the Puget Sound, Bob learned about the 'fishy side’ to marine biology. He enrolled at the University of Washington School of Fisheries, earned a Master’s degree, and then worked for the Inter-American Tropical Tuna Commission at a remote marine lab in Central America before returning to the northwest with his wife to raise a family and pursue his career in fisheries.

 

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Jason Conner

Jason Conner is a fishery biologist who researches the groundfish populations of the Bering Sea. He began his career with NOAA Fisheries in Woods Hole, MA, at the Northeast Fisheries Science Center, helping to record data on whale and seal populations in the Atlantic. He also spent two years in Gloucester, MA, working on fisheries data reporting systems for the Northeast Regional Office. Jason grew up in Denver, CO, but he has had a passion for the ocean since he was two years old. In his free time, Jason enjoys acting in community theater, playing ice hockey, and diving (with and without SCUBA).