Microbes follow Humboldt: temperature drives plant and soil microbial diversity patterns from the Amazon to the Andes.
Microbes follow Humboldt: temperature drives plant and soil microbial diversity patterns from the Amazon to the Andes.
复制标题
DOI：
10.1002/ecy.2482
复制
发表时间：
2018-11
期刊：
影响因子：
4.8
通讯作者：
Meir P
中科院分区：
文献类型：
--
作者：
Nottingham AT;Fierer N;Turner BL;Whitaker J;Ostle NJ;McNamara NP;Bardgett RD;Leff JW;Salinas N;Silman MR;Kruuk LEB;Meir P
200多年前，亚历山大·冯·洪堡报告说，热带植物物种丰富度随着海拔的上升和气温的下降而减少。令人惊讶的是，尽管土壤微生物在陆地生物地球化学和生态学中发挥着核心作用，但尚未观察到热带山区植物、细菌和真菌多样性的协调模式。我们研究了一条海拔3.5公里的安第斯样带，以测试热带森林植物、土壤细菌和真菌的物种多样性和组成是否遵循相似的生物地理模式和共同的环境驱动因素。我们发现，三个群落的物种丰富度随海拔的升高而降低，群落间的组成差异随着海拔分离度的增大而增大，尽管植物多样性的变化大于细菌和真菌。温度是这些多样性梯度的主要驱动因素，土壤性质(包括土壤pH)的影响很小。微生物多样性的梯度与参与有机质循环的酶的活性密切相关，并伴随着微生物特征向生长较慢的低营养类群过渡。我们首次提供了热带生态系统中三个主要生物类群的多样性和分布中温度驱动的协调模式的证据：土壤细菌、真菌和植物。这些发现表明，具有共同环境驱动因素的植物群落和微生物群落的相互关联和基本格局发生在景观尺度上。这些模式揭示了土壤pH相对恒定的地方，并对未来气候变化下的热带森林群落产生了影响。
More than 200 years ago, Alexander von Humboldt reported that tropical plant species richness decreased with increasing elevation and decreasing temperature. Surprisingly, coordinated patterns in plant, bacterial, and fungal diversity on tropical mountains have not yet been observed, despite the central role of soil microorganisms in terrestrial biogeochemistry and ecology. We studied an Andean transect traversing 3.5 km in elevation to test whether the species diversity and composition of tropical forest plants, soil bacteria, and fungi follow similar biogeographical patterns with shared environmental drivers. We found coordinated changes with elevation in all three groups: species richness declined as elevation increased, and the compositional dissimilarity among communities increased with increased separation in elevation, although changes in plant diversity were larger than in bacteria and fungi. Temperature was the dominant driver of these diversity gradients, with weak influences of edaphic properties, including soil pH. The gradients in microbial diversity were strongly correlated with the activities of enzymes involved in organic matter cycling, and were accompanied by a transition in microbial traits towards slower‐growing, oligotrophic taxa at higher elevations. We provide the first evidence of coordinated temperature‐driven patterns in the diversity and distribution of three major biotic groups in tropical ecosystems: soil bacteria, fungi, and plants. These findings suggest that interrelated and fundamental patterns of plant and microbial communities with shared environmental drivers occur across landscape scales. These patterns are revealed where soil pH is relatively constant, and have implications for tropical forest communities under future climate change.
登录
查看更多内容
影响因子：
6.4
作者：
Enquist, Brian J.;Bentley, Lisa Patrick;Malhi, Yadvinder
通讯作者：
Malhi, Yadvinder
影响因子：
56.9
作者：
Beer, Christian;Reichstein, Markus;Papale, Dario
通讯作者：
Papale, Dario
影响因子：
4.8
作者：
Fierer, Noah;Bradford, Mark A.;Jackson, Robert B.
通讯作者：
Jackson, Robert B.
影响因子：
8.8
作者：
de Vries, Franciska T.;Manning, Pete;Bardgett, Richard D.
通讯作者：
Bardgett, Richard D.
影响因子：
4.8
作者：
Fierer, Noah;McCain, Christy M.;Knight, Rob
通讯作者：
Knight, Rob