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首页> 外文期刊>Estuarine Coastal and Shelf Science >Experimental salt marsh islands: A model system for novel metacommunity experiments
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Experimental salt marsh islands: A model system for novel metacommunity experiments

机译：实验性盐沼岛：新型元社区实验的模型系统

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摘要

Shallow tidal coasts are characterised by shifting tidal flats and emerging or eroding islands above the high tide line. Salt marsh vegetation colonising new habitats distant from existing marshes are an ideal model to investigate metacommunity theory. We installed a set of 12 experimental salt marsh islands made from metal cages on a tidal flat in the German Wadden Sea to study the assembly of salt marsh communities in a metacommunity context. Experimental plots at the same elevation were established within the adjacent salt marsh on the island of Spiekeroog. For both, experimental islands and salt marsh enclosed plots, the same three elevational levels were realised while creating bare patches open for colonisation and vegetated patches with a defined transplanted community. One year into the experiment, the bare islands were colonised by plant species with high fecundity although with a lower frequency compared to the salt marsh enclosed bare plots. Initial plant community variations due to species sorting along the inundation gradient were evident in the transplanted vegetation. Competitive exclusion was not observed and is only expected to unfold in the coming years. Our study highlights that spatially and temporally explicit metacommunity dynamics should be considered in salt marsh plant community assembly and disassembly. (C) 2017 Elsevier Ltd. All rights reserved.
机译：浅潮汐海岸的特征是潮汐滩移动以及高潮线以上的新兴或侵蚀岛屿。盐沼植被遍布远离现有沼泽的新栖息地，是研究元群落理论的理想模型。我们在德国瓦登海的一个潮滩上安装了12个由金属笼子制成的实验性盐沼岛，以研究元社区中盐沼群落的聚集。在Spiekeroog岛上相邻的盐沼内建立了相同高度的实验区。对于实验岛和盐沼封闭地块，实现了相同的三个海拔高度，同时创建了开放的裸露斑块以供定居，并为植被斑块定义了移植社区。进入实验的一年，光秃秃的岛屿被高繁殖力的植物物种殖民，尽管与盐沼封闭的光秃秃的土地相比，频率较低。在移植植被中，由于物种沿着淹没梯度进行排序而导致的初始植物群落变化是显而易见的。没有观察到竞争性排斥现象，预计仅在未来几年才会出现竞争排斥现象。我们的研究强调，在盐沼植物群落的组装和拆卸中应考虑时空上明确的元社区动力学。 （C）2017 Elsevier Ltd.保留所有权利。

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  • 来源
    《Estuarine Coastal and Shelf Science》 |2017年第ptaa期|288-298|共11页
  • 作者

    Balke Thorsten; Lohmus Kertu; Hillebrand Helmut; Zielinski Oliver; Haynert Kristin; Meier Daniela; Hodapp Dorothee; Minden Vanessa; Kleyer Michael;

  • 作者单位

    Carl von Ossietzky Univ Oldenburg, Inst Biol & Environm Sci, D-26129 Oldenburg, Germany|Univ Glasgow, Sch Geog & Earth Sci, Glasgow G12 8QQ, Lanark, Scotland;

    Carl von Ossietzky Univ Oldenburg, Inst Biol & Environm Sci, D-26129 Oldenburg, Germany;

    Univ Oldenburg Wilhelmshaven, Inst Chem & Biol Marine Environm ICBM, D-26382 Wilhelmshaven, Germany;

    Univ Oldenburg Wilhelmshaven, Inst Chem & Biol Marine Environm ICBM, D-26382 Wilhelmshaven, Germany;

    Georg August Univ Gottingen, JF Blumenbach Inst Zool & Anthropol, D-37073 Gottingen, Germany;

    Univ Oldenburg Wilhelmshaven, Inst Chem & Biol Marine Environm ICBM, D-26382 Wilhelmshaven, Germany;

    Univ Oldenburg Wilhelmshaven, Inst Chem & Biol Marine Environm ICBM, D-26382 Wilhelmshaven, Germany;

    Carl von Ossietzky Univ Oldenburg, Inst Biol & Environm Sci, D-26129 Oldenburg, Germany|Vrije Univ Brussel, Dept Biol Ecol & Biodivers, B-1050 Brussels, Belgium;

    Carl von Ossietzky Univ Oldenburg, Inst Biol & Environm Sci, D-26129 Oldenburg, Germany;

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  • 关键词

    Niche; Priority effects; Dispersal; Wadden Sea; Transplants; Competition; Patch dynamics; Species sorting;

    机译：生态位;优先效应;分散;浅海;移植;竞争;斑块动态;物种分类;

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