April 24, 2017 — A newly released study from the Alaska Fisheries Science Center tracks distribution shifts of groundfish in the Eastern Bering Sea from 1982 to 2015.
Researchers say the visualizations provided by this 331-page document will help them to understand the life histories of 22 groundfish and skate species over time and space and provide clues to how climate change may potentially impact those species at different life stages.
During the standardized bottom trawl surveys of the Eastern Bering Sea shelf area between 20 and 200 meters from May to August in those years, researchers collected species composition and bottom temperature for all tows, as well as measurements from all fish encountered. That data provides a unique look at the spatial and environmental preferences of many species, as well as ontogenetic shifts in spatial distribution and environmental preferences over 34 years, they said.
Steve Barbeaux, the fisheries biologist who served as lead author of the study, said climate variability has increased in the Bering Sea in recent years and AFSC will use this information to study how ecosystems respond to change.