A major ecosystem shift in the northern Bering Sea

被引:666
作者
Grebmeier, JM
Overland, JE
Moore, SE
Farley, EV
Carmack, EC
Cooper, LW
Frey, KE
Helle, JH
McLaughlin, FA
McNutt, SL
机构
[1] Univ Tennessee, Dept Ecol & Evolutionary Biol, Marine Biogeochem & Ecol Grp, Knoxville, TN 37932 USA
[2] NOAA, Pacific Marine Environm Lab, Seattle, WA 98115 USA
[3] NOAA, Alaska Fisheries Sci Ctr, Seattle, WA 98115 USA
[4] NOAA, Auke Bay Lab, Alaska Fisheries Sci Ctr, Natl Marine Fisheries Serv, Juneau, AK 99801 USA
[5] Fisheries & Oceans Canada, Inst Ocean Sci, Sidney, BC V8L 4B2, Canada
[6] Univ Calif Los Angeles, Dept Geog, Los Angeles, CA 90095 USA
[7] Univ Alaska Fairbanks, Inst Geophys, Fairbanks, AK 99775 USA
关键词
D O I
10.1126/science.1121365
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Until recently, northern Bering Sea ecosystems were characterized by extensive seasonal sea ice cover, high water column and sediment carbon production, and tight pelagic-benthic coupling of organic production. Here, we show that these ecosystems are shifting away from these characteristics. Changes in biological communities are contemporaneous with shifts in regional atmospheric and hydrographic forcing. In the past decade, geographic displacement of marine mammal population distributions has coincided with a reduction of benthic prey populations, an increase in pelagic fish, a reduction in sea ice, and an increase in air and ocean temperatures. These changes now observed on the shallow shelf of the northern Bering Sea should be expected to affect a much broader portion of the Pacific-influenced sector of the Arctic Ocean.
引用
收藏
页码:1461 / 1464
页数:4
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