Lake littoral environments are heterogeneous, and different organisms typically show specific responses to this environmental variation. We examined local environmental and spatial factors affecting lake littoral biodiversity and the structuring of assemblages of phytoplankton, zooplankton and macroinvertebrates within and among three basins of a large lake system. We explored congruence of species composition and species richness among the studied organism groups to evaluate their general indicator potential to represent spatial variation in other groups. We expected that effects of water chemistry on plankton assemblages were stronger than effects of habitat characteristics. In contrast, we anticipated stronger effects of habitat on macroinvertebrates due to their mainly benthic mode of life. We also expected that within-basin spatial effects would be strongest on macroinvertebrates and weakest on phytoplankton. We predicted weak congruence in assemblage composition and species richness among the organism groups. Phytoplankton assemblages were mainly structured by the shared effects of water chemistry and large-scale spatial factors. In contrast to our expectations, habitat effects were stronger than water chemistry effects on zooplankton assemblages. However, as expected, macroinvertebrate species composition and richness were mainly affected by habitat conditions. Among-group congruence was weak for assemblage composition and insignificant for richness. Albeit weak, congruence was strongest between phytoplankton and zooplankton assemblages, as we expected. In summary, our analyses do not support the idea of using a single organism group as a wholesale biodiversity indicator.

中文翻译：

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湖泊沿岸社区的生态驱动力是否匹配并导致生物体之间的一致性？

湖泊沿岸环境是异质的，不同的生物通常会对这种环境变化表现出特定的反应。我们研究了影响湖泊沿岸生物多样性的局部环境和空间因素，以及大型湖泊系统三个盆地内部和之中的浮游植物，浮游动物和大型无脊椎动物组成的结构。我们探索了所研究生物群之间物种组成和物种丰富度的一致性，以评估它们代表其他群体空间变化的总体指标潜力。我们预期水化学对浮游生物组合的影响要强于栖息地特征。相比之下，我们预计栖息地对大型无脊椎动物的影响更大，因为它们主要是底栖生物。我们还期望流域内空间影响对大型无脊椎动物最强，对浮游植物最弱。我们预测了有机体之间的组合组成和物种丰富度的弱一致性。浮游植物的组成主要是由水化学和大规模空间因素的共同作用构成的。与我们的预期相反，对浮游动物的栖息地影响要强于水化学作用。但是，正如预期的那样，大型无脊椎动物物种的组成和丰富度主要受到栖息地条件的影响。组间一致性在组合组成方面较弱，而在丰富性方面则无关紧要。正如我们所预期的那样，浮游植物和浮游动物组合之间的一致性虽然最弱，但最强。综上所述，