Patterns of Diversity in Marine Phytoplankton

被引：266

作者：

Barton, Andrew D. ^{[1
]}

Dutkiewicz, Stephanie ^{[1
]}

Flierl, Glenn ^{[1
]}

Bragg, Jason ^{[2
]}

Follows, Michael J. ^{[1
]}

机构：

[1] MIT, Dept Earth Atmospher & Planetary Sci, Cambridge, MA 02139 USA

[2] MIT, Dept Civil & Environm Engn, Cambridge, MA 02139 USA

来源：

SCIENCE | 2010年 / 327卷 / 5972期

关键词：

RESOURCE COMPETITION; BIOGEOGRAPHY; GRADIENT; OCEAN; MODEL; COMMUNITIES; SPECIATION;

D O I：

10.1126/science.1184961

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：

Spatial diversity gradients are a pervasive feature of life on Earth. We examined a global ocean circulation, biogeochemistry, and ecosystem model that indicated a decrease in phytoplankton diversity with increasing latitude, consistent with observations of many marine and terrestrial taxa. In the modeled subpolar oceans, seasonal variability of the environment led to competitive exclusion of phytoplankton with slower growth rates and lower diversity. The relatively weak seasonality of the stable subtropical and tropical oceans in the global model enabled long exclusion time scales and prolonged coexistence of multiple phytoplankton with comparable fitness. Superimposed on the decline in diversity seen from equator to pole were "hot spots" of enhanced diversity in some regions of energetic ocean circulation, which reflected lateral dispersal.

引用

页码：1509 / 1511

页数：3

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