Community reorganization in the Gulf of Alaska following ocean climate regime shift
Marine Ecology Progress Series
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Abstract
A shift in ocean climate during the late 1970s triggered a reorganization of community structure in the Gulf of Alaska ecosystem, as evidenced in changing catch composition on long-term (1953 to 1997) small-mesh trawl surveys. Forage species such as pandalid shrimp and capelin declined because of recruitment failure and predation, and populations have not yet recovered. Total trawl catch biomass declined >50% and remained low through the 1980s. In contrast, recruitment of high trophic-level groundfish improved during the 1980s, yielding a >250% increase in catch biomass during the 1990s. This trophic reorganization apparently had negative effects on piscivorous sea birds and marine mammals.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Community reorganization in the Gulf of Alaska following ocean climate regime shift |
| Series title | Marine Ecology Progress Series |
| DOI | 10.3354/meps189117 |
| Volume | 189 |
| Year Published | 1999 |
| Language | English |
| Publisher | Inter-Research |
| Contributing office(s) | Alaska Biological Science Center |
| Description | 7 p. |
| First page | 117 |
| Last page | 123 |
| Country | United States |
| State | Alaska |
| Other Geospatial | Gulf of Alaska |