Multitrophic diversity in a biodiverse forest is highly nonlinear across spatial scales.
Multitrophic diversity in a biodiverse forest is highly nonlinear across spatial scales.
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DOI：
10.1038/ncomms10169
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发表时间：
2015-12-10
影响因子：
16.6
通讯作者：
Bruelheide H
中科院分区：
文献类型：
--
作者：
Schuldt A;Wubet T;Buscot F;Staab M;Assmann T;Böhnke-Kammerlander M;Both S;Erfmeier A;Klein AM;Ma K;Pietsch K;Schultze S;Wirth C;Zhang J;Zumstein P;Bruelheide H
亚热带和热带森林是生物多样性的热点，了解其多样性的空间尺度是理解全球物种丰富度和保护对人类福祉至关重要的生物多样性的基础。然而，对于生物多样性地区的异质环境，共存类群之间的依赖于规模的多样性分布仍然知之甚少。我们发现，山地亚热带森林中43个分类群(包括植物、节肢动物和微生物)之间的多样性关系在空间尺度上是高度非线性的。在使用植物等代理类群时，β多样性中特定分类单元的差异会导致对总体多样性的低估或高估高达50%。类似的关系可能适用于一半的(亚热带)热带森林--包括主要的生物多样性热点--在这些地区，高度的环境异质性导致高度的生物多样性和物种周转。我们的研究强调，我们必须提高对生物多样性模式的总体理解--需要比研究得更好的低地森林大得多的面积--以可靠地估计生物多样性的分布并为世界生物多样性区域制定保护战略。对生物多样性的测量可能会因采样面积的不同而不同，尽管这种变化如何在不同的分类群中变化还不是很清楚。这里，Schuldt等人。研究发现，异质亚热带森林中植物、节肢动物和微生物的多样性在空间尺度上是高度非线性的。
Subtropical and tropical forests are biodiversity hotspots, and untangling the spatial scaling of their diversity is fundamental for understanding global species richness and conserving biodiversity essential to human well-being. However, scale-dependent diversity distributions among coexisting taxa remain poorly understood for heterogeneous environments in biodiverse regions. We show that diversity relations among 43 taxa—including plants, arthropods and microorganisms—in a mountainous subtropical forest are highly nonlinear across spatial scales. Taxon-specific differences in β-diversity cause under- or overestimation of overall diversity by up to 50% when using surrogate taxa such as plants. Similar relationships may apply to half of all (sub)tropical forests—including major biodiversity hotspots—where high environmental heterogeneity causes high biodiversity and species turnover. Our study highlights that our general understanding of biodiversity patterns has to be improved—and that much larger areas will be required than in better-studied lowland forests—to reliably estimate biodiversity distributions and devise conservation strategies for the world's biodiverse regions. Measurements of biodiversity may differ according to the extent of area sampled, although how this changes across taxa is not well understood. Here, Schuldt et al. find that the diversity of plants, arthropods and microorganisms in a heterogeneous subtropical forest is highly nonlinear across spatial scales.