Geographical distribution of zooplankton biodiversity in highly polluted running water ecosystems: Validation of fine-scale species sorting hypothesis.
Geographical distribution of zooplankton biodiversity in highly polluted running water ecosystems: Validation of fine-scale species sorting hypothesis.
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高度污染的自来水生态系统中浮游动物生物多样性的地理分布：精细物种分类假设的验证
DOI：
10.1002/ece3.4037
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发表时间：
2018-05
影响因子：
2.6
通讯作者：
Zhan A
中科院分区：
文献类型：
--
作者：
Yang Y;Ni P;Gao Y;Xiong W;Zhao Y;Zhan A
分散，而不是物种分类，被广泛认为是决定自来水生态系统精细地理尺度上的元群落结构的主要驱动因素。然而，这一观点受到了最近提出的“细微尺度物种分类假说”的挑战，该假说认为，群落结构在很大程度上可以由当地污染在细微尺度上形成的环境梯度决定。在这里，我们通过研究海河流域重污染河流--北运河中后生浮游动物的群落组成和地理分布来验证这一假说，中国。相似性分析(ANOSIM)表明，后生浮游动物群落组成在环境梯度上存在显著差异(p=0.001)。氨氮(NH4-N)是影响浮游动物群落结构和地理分布变化的主要因素，其次是总溶解固体(TDS)、钠、溶解氧(DO)和温度(T)。变异划分显示，环境变量(21.6%)比空间变量(1.1%)对浮游动物群落的总解释变异的贡献更大。我们的结果支持物种分类，而不是分散，在群落结构中起关键作用。阈值指示类群分析(TITAN)还揭示了沿NH4-N梯度的类群和群落水平的显著变化点，为环境变量对浮游动物群落的影响提供了进一步的支持。总体而言，当流水生态系统在精细地理尺度上存在环境梯度时，我们验证了精细尺度物种分类假说。然而，未来关于污染物和浮游动物群落之间相互作用的研究仍然需要更好地理解元群落动态的机制。
Dispersal, rather than species sorting, is widely recognized as the dominant driver for determining meta‐community structure at fine geographical scales in running water ecosystems. However, this view has been challenged by a recently proposed “fine‐scale species sorting hypothesis,” where community structure can be largely determined by an environmental gradient formed by local pollution at fine scales. Here, we tested this hypothesis by studying community composition and geographical distribution of metazoan zooplankton in a heavily polluted river—the North Canal River in the Haihe River Basin, China. Analysis of similarity (ANOSIM) showed that the community composition of metazoan zooplankton differed significantly (p = .001) along the environmental gradient. Ammonium (NH4‐N) was the leading factor responsible for changes in zooplankton community structure and geographical distribution, followed by total dissolved solid (TDS), Na, dissolved oxygen (DO) and temperature (T). Variation partitioning revealed a larger contribution of environmental variables (21.6%) than spatial variables (1.1%) to the total explained variation of zooplankton communities. Our results support that species sorting, rather than dispersal, played a key role in structuring communities. Threshold Indicator Taxa ANalysis (TITAN) also revealed significant change points at both taxon and community levels along the gradient of NH4‐N, providing further support for the influence of environmental variables on zooplankton communities. Collectively, we validate the fine‐scale species sorting hypothesis when an environmental gradient exists in running water ecosystems at fine geographical scales. However, future studies on interactions between pollutants and zooplankton communities are still needed to better understand mechanisms responsible for the meta‐community dynamics.
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影响因子：
2.1
作者：
Fussmann, G
通讯作者：
Fussmann, G
影响因子：
4.5
作者：
Cheng, Chang-Hong;Yang, Fang-Fang;Wang, An-Li
通讯作者：
Wang, An-Li
影响因子：
4.8
作者：
BORCARD, D;LEGENDRE, P;DRAPEAU, P
通讯作者：
DRAPEAU, P
影响因子：
6.9
作者：
Battuello, M.;Brizio, P.;Squadrone, S.
通讯作者：
Squadrone, S.
影响因子：
2.7
作者：
Castillo-Escriva, Andreu;Aguilar-Alberola, Josep A.;Mesquita-Joanes, Francesc
通讯作者：
Mesquita-Joanes, Francesc