期刊
DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY
卷 147, 期 -, 页码 58-68出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.dsr2.2017.04.023
关键词
Cook Inlet; Alaskan Shelf; Continuous Plankton Recorder; Zooplankton; PhytoplanIcton
类别
资金
- North Pacific CPR Consortium [02624-BAA, 030624, 040624, 10100624, 16120114-A]
- North Pacific Research Board [F3803, 903, 1001, 1425]
- Canadian Department of Fisheries and Oceans
- Sir Alister Hardy Foundation for Ocean Science
- North Pacific Marine Science Organisation
- Exxon Valdez Oil Spill Trustee Council
- NERC [NE/R002738/1, SAH01001, pml010009, NE/L002663/2, nceo020006] Funding Source: UKRI
- Natural Environment Research Council [NE/L002663/2, SAH01001, nceo020006, pml010009, NE/R002738/1] Funding Source: researchfish
This study describes results from the first 16 years of the Continuous Plankton Recorder (CPR) program that has sampled the lower trophic levels (restricted to larger, hard-shelled phytoplankton and robust zooplankton taxa) on the Alaskan shelf. Sampling took place along transects from the open ocean across the shelf (to the entrance to Prince William Sound from 2000 to 2003 and into Cook Inlet from 2004 to 2015) to provide plankton abundance data, spring through autumn of each year. We document interannual variability in concentration and composition of the plankton community of the region over this time period. At least in part and through correlative relationships, this can be attributed to changes in the physical environment, particularly direct and indirect effects of temperature. For example; spring mixed layer depth is shown to influence the timing of the spring diatom peak and warmer years are biased towards smaller copepod species. A significant positive relationship between temperature, diatom abundance and zooplankton biomass existed from 2000 to 2013 but was not present in the warm years of 2014 and 2015. These results suggest that anomalous warming events, such as the heat wave of 2014-2015, could fundamentally influence typical lower trophic level patterns, possibly altering trophic interactions.
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