Ecological shift from piscivorous to planktivorous seabirds in the Chukchi Sea, 1975–2012. Gall, A., E., Morgan, T., C., Day, R., H., & Kuletz, K., J. Polar Biology, 40(1):61-78, Springer Berlin Heidelberg, 2017. abstract bibtex Shares Abstract Sea ice now forms later and melts earlier than it did 4 decades years ago, and it now melts completely in all parts of the Chukchi Sea. This decline in sea ice is expected to have repercussions on the trophic structure in this environment, and there are indications that changes already have taken place in the seabird community. We compared boat-based densities of seabirds in the eastern Chukchi Sea between July and October during 1975– 1981 (historical data) with densities during 2007–2012 (recent data). We related the composition of the seabird community to sea-ice cover to explore how the community may be responding to changes in oceanography. The seabird community historically was composed predominantly of piscivorous Black-legged Kittiwakes (Rissa tridactyla) and murres (Uria spp.). In contrast, the seabird community now is composed predominantly of planktivorous seabirds such as Crested Auklets (Aethia cristatella) and Short-tailed Shearwaters (Puffinus tenuirostris). Total abundance of pp 1–18
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title = {Ecological shift from piscivorous to planktivorous seabirds in the Chukchi Sea, 1975–2012},
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year = {2017},
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abstract = {Shares Abstract Sea ice now forms later and melts earlier than it did 4 decades years ago, and it now melts completely in all parts of the Chukchi Sea. This decline in sea ice is expected to have repercussions on the trophic structure in this environment, and there are indications that changes already have taken place in the seabird community. We compared boat-based densities of seabirds in the eastern Chukchi Sea between July and October during 1975– 1981 (historical data) with densities during 2007–2012 (recent data). We related the composition of the seabird community to sea-ice cover to explore how the community may be responding to changes in oceanography. The seabird community historically was composed predominantly of piscivorous Black-legged Kittiwakes (Rissa tridactyla) and murres (Uria spp.). In contrast, the seabird community now is composed predominantly of planktivorous seabirds such as Crested Auklets (Aethia cristatella) and Short-tailed Shearwaters (Puffinus tenuirostris). Total abundance of pp 1–18},
bibtype = {article},
author = {Gall, Adrian E. and Morgan, Tawna C. and Day, Robert H. and Kuletz, Katherine J.},
journal = {Polar Biology},
number = {1}
}
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