Long-term discrepancy between food supply and demand in the deep eastern North Pacific

被引：112

作者：

Smith, KL ^{[1
]}

Kaufmann, RS

机构：

[1] Univ Calif San Diego, Scripps Inst Oceanog, Div Marine Biol Res, La Jolla, CA 92093 USA

[2] Univ San Diego, Marine & Environm Studies Program, San Diego, CA 92110 USA

来源：

SCIENCE | 1999年 / 284卷 / 5417期

关键词：

D O I：

10.1126/science.284.5417.1174

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：

A 7-year study of food supply [sinking particulate organic carbon (POC)] and food demand [sediment community: oxygen consumption (SCOC)] in the abyssal eastern North Pacific revealed a long-term deficit in food supply. The POC:SCOC ratio decreased by:52:to 59 percent between 1989 and 1996. A possible explanation for this. trend is the documented sea surface temperature increase and concomitant: plankton biomass decrease in the eastern North Pacific, resulting in an apparent reduction in POC export from,surface waters to the deep ocean. Continuation of this trend could profoundly impact geochemical cycling as:well as the structure and dynamics of deepsea communities.

引用

页码：1174 / 1177

页数：4

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