Multiple Indicators Track Major Ecosystem Shifts in the Bering Sea ...
No abstracts are to be cited without prior reference to the author.Observations over the previous five years show persistent warm and ice-free conditions in the southeastern Bering Sea compared to the mid-1990s, despite large variability in climate indices such as the Arctic Oscillation (AO) and the...
| Main Authors: | , , |
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| Format: | Article in Journal/Newspaper |
| Language: | unknown |
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ASC 2005 - M - Theme session
2024
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| Online Access: | https://dx.doi.org/10.17895/ices.pub.25350277.v1 https://ices-library.figshare.com/articles/conference_contribution/Multiple_Indicators_Track_Major_Ecosystem_Shifts_in_the_Bering_Sea/25350277/1 |
| Summary: | No abstracts are to be cited without prior reference to the author.Observations over the previous five years show persistent warm and ice-free conditions in the southeastern Bering Sea compared to the mid-1990s, despite large variability in climate indices such as the Arctic Oscillation (AO) and the Pacific Decadal Oscillation (PDO). These conditions follow a major transformation around 1977 as part of the PDO, with a change from a predominantly cold Arctic climate at least back to the early 1800s to a warmer subarctic maritime climate, accompanied by a major reorganization of the marine ecosystem. Over the last decade annual fisheries surveys indicate a continued decline in recruitment to cold water stocks such as Greenland turbot and snow crab. However, walleye pollock is characterized by a large, rather stable population. Pacific Walrus is another species showing northward movement due to lack of sea ice and warmer temperatures. While it is difficult to show direct causality, the timing of reductions in ... |
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