Rethinking the marine carbon cycle: Factoring in the multifarious lifestyles of microbes

被引:590
作者
Worden, Alexandra Z. [1 ,2 ,3 ]
Follows, Michael J. [4 ]
Giovannoni, Stephen J. [5 ]
Wilken, Susanne [1 ]
Zimmerman, Amy E. [1 ]
Keeling, Patrick J. [3 ,6 ]
机构
[1] Monterey Bay Aquarium Res Inst, Moss Landing, CA 95039 USA
[2] Univ Calif Santa Cruz, Dept Ocean Sci, Santa Cruz, CA 95064 USA
[3] Canadian Inst Adv Res, Integrated Microbial Biodivers Program, Toronto, ON M5G 1Z8, Canada
[4] MIT, Dept Earth Atmospher & Planetary Sci, Cambridge, MA 02139 USA
[5] Oregon State Univ, Dept Microbiol, Corvallis, OR 97331 USA
[6] Univ British Columbia, Dept Bot, Vancouver, BC V6T 1Z4, Canada
关键词
OPEN-OCEAN; FOOD-WEB; WIDESPREAD OCCURRENCE; BIOLOGICAL PROCESSES; NITROGEN-FIXATION; GRAZING IMPACT; CLIMATE-CHANGE; BACTERIAL; DIVERSITY; DYNAMICS;
D O I
10.1126/science.1257594
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
The profound influence of marine plankton on the global carbon cycle has been recognized for decades, particularly for photosynthetic microbes that form the base of ocean food chains. However, a comprehensive model of the carbon cycle is challenged by unicellular eukaryotes (protists) having evolved complex behavioral strategies and organismal interactions that extend far beyond photosynthetic lifestyles. As is also true for multicellular eukaryotes, these strategies and their associated physiological changes are difficult to deduce from genome sequences or gene repertoires-a problem compounded by numerous unknown function proteins. Here, we explore protistan trophic modes in marine food webs and broader biogeochemical influences. We also evaluate approaches that could resolve their activities, link them to biotic and abiotic factors, and integrate them into an ecosystems biology framework.
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页数:11
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