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Colonisation dynamic and diversity patterns of holocene forest snail fauna across temperate Europe: The imprint of palaeoclimate changes
Quaternary Science Reviews ( IF 4 ) Pub Date : 2020-07-01 , DOI: 10.1016/j.quascirev.2020.106367
Michal Horsák , Nicole Limondin-Lozouet , Salome Granai , Julie Dabkowski , Jan Divíšek , Petra Hájková

Abstract The development of biotic communities since the last glaciation has been shaped by both dramatic climate changes and pathways of species colonisation from glacial refugia. Although the growing body of literature has emerged recently on possible scenarios of postglacial colonisation, less is known about the effect of climate. We analysed the dynamics of Holocene mollusc succession with an undetected human impact using three well-dated sequences from spring tufa deposits across temperate Europe. For the first time, the detailed Holocene mollusc successions can be compared with climate parameters in the corresponding time windows. High-resolution palaeoclimate data accompanied the species data, and the data derived from stable isotope analyses. The number of closed-canopy forest species that colonised the sites until 5000 cal BP and the maximum number of species per sample systematically increased towards the interior of the continent. We also observed earlier colonisation of forest snail species in the Western Carpathians. While the aridity index was the best predictor of local species richness in Normandy and Luxembourg, minimum January temperature drove the variation in snail data in Slovakia. The short period of an abrupt cooling and drying around 8500 cal BP was found to stop the colonisation, sharply reducing the number of local species across the continent. Our results document the importance of climate for the colonisation and development of forest biota during the first half of the Holocene, both at continental and local scales. They also elucidate processes shaping the current distribution of forest snail fauna across the European temperate zone.

中文翻译:

欧洲温带全新世森林蜗牛群的定殖动态和多样性模式:古气候变化的印记

摘要 自上次冰川作用以来,生物群落的发展受到剧烈的气候变化和冰川避难所物种定殖途径的影响。尽管最近出现了越来越多的关于冰后殖民化可能情景的文献,但对气候的影响却知之甚少。我们使用来自欧洲温带春季钙华沉积物的三个年代确定的序列分析了全新世软体动物演替的动态,其中未发现人类影响。首次可以将详细的全新世软体动物序​​列与相应时间窗口中的气候参数进行比较。高分辨率古气候数据伴随着物种数据,以及来自稳定同位素分析的数据。在 5000 cal BP 之前殖民这些地点的封闭树冠森林物种的数量和每个样本的最大物种数量向大陆内部系统地增加。我们还观察到西喀尔巴阡山脉的森林蜗牛物种的早期定植。虽然干旱指数是诺曼底和卢森堡当地物种丰富度的最佳预测指标,但 1 月的最低气温推动了斯洛伐克蜗牛数据的变化。发现大约 8500 cal BP 的短暂冷却和干燥停止了殖民化,从而大大减少了整个大陆的本地物种数量。我们的研究结果证明了气候对全新世前半期在大陆和地方尺度上的森林生物群落定植和发展的重要性。
更新日期:2020-07-01
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