Microbes do not follow the elevational diversity patterns of plants and animals

被引:466
作者
Fierer, Noah [1 ,2 ]
McCain, Christy M. [1 ]
Meir, Patrick [3 ]
Zimmermann, Michael [3 ,4 ]
Rapp, Joshua M. [5 ]
Silman, Miles R. [5 ]
Knight, Rob [6 ,7 ]
机构
[1] Univ Colorado, Dept Ecol & Evolutionary Biol, Boulder, CO 80309 USA
[2] Univ Colorado, Cooperat Inst Res Environm Sci, Boulder, CO 80309 USA
[3] Univ Edinburgh, Sch Geosci, Edinburgh EH8 9XP, Midlothian, Scotland
[4] James Cook Univ, Sch Earth & Environm Sci, Cairns 4878, Australia
[5] Wake Forest Univ, Dept Biol, Winston Salem, NC 27106 USA
[6] Univ Colorado, Dept Chem & Biochem, Boulder, CO 80309 USA
[7] Howard Hughes Med Inst, Chevy Chase, MD 20815 USA
基金
美国国家卫生研究院; 美国国家科学基金会;
关键词
16S rRNA genes; bacterial diversity; montane diversity gradient; phyllosphere bacteria; pyrosequencing; soil bacteria; SPECIES-RICHNESS PATTERNS; BACTERIAL COMMUNITIES; LATITUDINAL DIVERSITY; GRADIENT; SCALE; SOIL; BIODIVERSITY; ECOLOGY; WATER; PERCEPTION;
D O I
10.1890/10-1170.1
中图分类号
Q14 [生态学(生物生态学)];
学科分类号
071301 [植物生态学];
摘要
The elevational gradient in plant and animal diversity is one of the most widely documented patterns in ecology and, although no consensus explanation exists, many hypotheses have been proposed over the past century to explain these patterns. Historically, research on elevational diversity gradients has focused almost exclusively on plant and animal taxa. As a result, we do not know whether microbes exhibit elevational gradients in diversity that parallel those observed for macroscopic taxa. This represents a key knowledge gap in ecology, especially given the ubiquity, abundance, and functional importance of microbes. Here we show that, across a montane elevational gradient in eastern Peru, bacteria living in three distinct habitats (organic soil, mineral soil, and leaf surfaces) exhibit no significant elevational gradient in diversity (r(2) < 0.17, P > 0.1 in all cases), in direct contrast to the significant diversity changes observed for plant and animal taxa across the same montane gradient (r(2) > 0.75, P < 0.001 in all cases). This finding suggests that the biogeographical patterns exhibited by bacteria are fundamentally different from those of plants and animals, highlighting the need for the development of more inclusive concepts and theories in biogeography to explain these disparities.
引用
收藏
页码:797 / 804
页数:8
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