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Paleoecological assessment of cladoceran community dynamics in two subarctic peatlands

机译：两个北极亚泥炭地锁骨群落动态的古生态学评估

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摘要

Crustacean community structure and dynamics are very well studied in lakes, rivers and oceanic systems but wetlands, where moisture conditions fluctuate, have not received equal attention in research. For example, cladoceran communities in peatland systems in the subarctic region have not been fully investigated. We used paleolimnological and paleoecological methods to study plant and cladoceran assemblages and the community dynamics in two subarctic peatlands, which differ in their hydrological characteristics. At the first site, Iitto, river floods introduce planktonic species to fen pools and the steep topography of the catchment induces rapid but relatively short flooding periods. Fluctuating environmental conditions result in a high amount of cladoceran resting stages in the samples. At the other site, Kaamanen, the cladoceran assemblage goes through clear directional changes, which could be attributed to changes in fen hydrology and ultimately to climatic changes during the past two millennia.
机译：在湖泊，河流和海洋系统中对甲壳类动物的群落结构和动力学进行了很好的研究，但湿气条件波动的湿地在研究中并未受到同等重视。例如，北极地区泥炭地系统中的枝角类群落尚未得到充分调查。我们使用古湖泊学和古生态学方法研究了两个北极亚泥炭地的植物和clacerceran组合以及群落动态，它们的水文特征不同。在第一个站点Iitto，河流洪水将浮游生物引入introduce池，集水区的陡峭地形引发了快速但相对较短的洪水时期。不断变化的环境条件导致样品中大量的角化搁置阶段。在另一个地点，Kaamanen，锁骨的组合经历了明显的方向变化，这可能归因于芬水文学的变化，最终归因于过去两千年的气候变化。

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