Drivers of long-term invertebrate community stability in changing Swedish lakes
Drivers of long-term invertebrate community stability in changing Swedish lakes
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DOI：
10.1111/gcb.14952
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发表时间：
2020-01-14
影响因子：
11.6
通讯作者：
Angeler, David G.
中科院分区：
文献类型：
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作者：
Fried-Petersen, Hannah B.;Araya-Ajoy, Yimen G.;Angeler, David G.
生态系统稳定性的研究主要集中在当地系统。然而，环境变化往往在广阔的空间尺度上缓慢发生，这就需要在区域一级对长期稳定性进行评估。在这项研究中，我们评估了瑞典“lakescape”中105个湖泊的大型无脊椎动物群落的稳定性。“使用分层混合模型方法，我们首先使用23年的时间序列（1995-2017）评估影响两个生态区（北部，南部）无脊椎动物群落的环境压力，然后研究一组环境和物理变量如何影响这些群落的稳定性。结果表明，湖泊纬度、大小、总磷和碱度影响北方和南方湖泊的群落组成。我们发现，湖泊的稳定性是受物种丰富度和湖泊规模在两个生态区和碱度和总磷在北方湖泊。有很大的异质性，在个别湖泊的社区稳定性的模式，但稳定性和环境驱动因素之间的关系开始出现时，lakescape，由许多离散的湖泊，是研究的重点单位。这项研究的结果强调，大规模的比较结合长时间序列是必不可少的，以了解环境变化对湖泊群落在空间和时间上的稳定性的影响。
Research on ecosystem stability has had a strong focus on local systems. However, environmental change often occurs slowly at broad spatial scales, which requires regional-level assessments of long-term stability. In this study, we assess the stability of macroinvertebrate communities across 105 lakes in the Swedish "lakescape." Using a hierarchical mixed-model approach, we first evaluate the environmental pressures affecting invertebrate communities in two ecoregions (north, south) using a 23 year time series (1995-2017) and then examine how a set of environmental and physical variables affect the stability of these communities. Results show that lake latitude, size, total phosphorus and alkalinity affect community composition in northern and southern lakes. We find that lake stability is affected by species richness and lake size in both ecoregions and alkalinity and total phosphorus in northern lakes. There is large heterogeneity in the patterns of community stability of individual lakes, but relationships between that stability and environmental drivers begin to emerge when the lakescape, composed of many discrete lakes, is the focal unit of study. The results of this study highlight that broad-scale comparisons in combination with long time series are essential to understand the effects of environmental change on the stability of lake communities in space and time.