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Spatio-Temporal Variability in Benthic Macroinvertebrate Communities in Headwater Streams in South Korea

机译：韩国上游水域底栖大型无脊椎动物群落的时空变化

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Comprehensive research on the structural and functional variability of benthic macroinvertebrate communities within headwater streams is limited, despite the fact that the majority of streams within a watershed are headwater streams that form the primary link between terrestrial and aquatic ecosystems. Therefore, we investigated the structure and function of benthic macroinvertebrate communities in four headwater streams at two different spatial scales ( i.e. , sampling sites ( i.e. , reaches) >samples ( i.e. , riffles)) over three seasons ( i.e. , spring, summer and autumn) of the year. Community indices, functional feeding guilds and habit trait guilds varied significantly depending on the seasons rather than on sites in two-way ANOVA based on spatial ( i.e. , sampling sites) and seasonal effects in each headwater stream. Non-metric multidimensional scaling analyses showed the differences between communities according to the considered spatial and temporal scales. At the individual stream scale, the differences between samples followed seasonal variation more than spatial differences. Site differences became more important when performing an ordination within a single season ( i.e. , spring, summer, and autumn). Continued research and monitoring employing both multidisciplinary and multidimensional approaches are required to maintain macroinvertebrate diversity within headwater streams.
机译：尽管流域内的大多数河流是形成陆地和水生生态系统之间主要联系的上游水流，但对上游水域底栖大型无脊椎动物群落结构和功能变异性的综合研究是有限的。因此，我们研究了三个季节（即春季，夏季和秋季）两个不同空间尺度（即采样点（即到达）>样本（即浅滩））在四个源头河底栖无脊椎动物群落的结构和功能。 ）。社区指数，功能性饮食行会和习惯性状行会的变化取决于季节，而不是根据每个上游水源流的空间（即采样点）和季节影响在双向方差分析中的位置。非度量多维尺度分析显示，根据所考虑的时空尺度，社区之间存在差异。在单个河流尺度上，样本之间的差异比季节差异更多地跟随季节差异。在单个季节（即春季，夏季和秋季）进行协调时，地点差异变得更加重要。需要继续采用多学科和多维方法进行研究和监测，以维持源头水流中大型无脊椎动物的多样性。

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