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首页> 外文期刊>Journal of Experimental Marine Biology and Ecology >Habitat modification drives benthic trophic diversity in an intertidal soft-bottom ecosystem
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Habitat modification drives benthic trophic diversity in an intertidal soft-bottom ecosystem

机译:栖息地改造推动潮间带软底生态系统底栖营养多样性

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摘要

In intertidal soft-bottom ecosystems, ecosystem engineers such as reef-building bivalves, can strongly affect the associated benthic community by providing structure and stabilizing the sediment Although several engineering species have declined dramatically in the past centuries, the consequences of their loss for the trophic structure of intertidal benthic communities remain largely unclear. In this study, we experimentally test the hypothesis that above- and belowground habitat modifications by ecosystem engineers, facilitate distinctly different, but trophically more diverse benthic communities, using intertidal mussel and tube worm beds as model systems. We constructed a large-scale experiment at two intertidal mudflats in the Dutch Wadden Sea, with distinctly different environmental conditions. At both sites, we applied anti-erosion mats to simulate belowground structure and sediment stabilization by commonly found tube worm beds and crossed this with the addition of adult mussels to investigate effects of aboveground structure. The anti-erosion mats mainly enhanced species and trophic diversity (i.e., feeding guild richness and diversity) of the infaunal community, while the addition of mussels primarily enhanced species and trophic diversity of the epifaunal community, irrespective of location. The effect size of mussel addition was larger at the exposed site in the western Wadden Sea compared to the more sheltered eastern site, probably due to relatively stronger abiotic stress alleviation. We conclude that structure-providing and sediment-stabilizing species such as reef-building bivalves and tube worms, form the foundation for trophically diverse benthic communities. In intertidal soft-bottom ecosystems like the Wadden Sea, their conservation and restoration are therefore critical for overall ecosystem functioning. (C) 2015 Elsevier B.V. All rights reserved.
机译:在潮间带软底生态系统中,造礁双壳类等生态系统工程师可以通过提供结构和稳定沉积物来强烈影响相关的底栖生物群落。尽管在过去的几个世纪中,一些工程物种已经急剧减少,但它们的丧失给营养带来了后果潮间底栖生物群落的结构仍不清楚。在这项研究中,我们以潮间贻贝和管状蠕虫床为模型系统,通过实验检验了生态系统工程师对地上和地下栖息地的改造促进了明显不同但营养上更多样化的底栖生物群落这一假设。我们在环境明显不同的荷兰瓦登海的两个潮间带滩涂上进行了大规模实验。在这两个地点,我们都使用防腐蚀垫来模拟地下结构和常见的管状蠕虫床对泥沙的稳定作用,并与成年贻贝一起越过该垫,以调查地下结构的影响。防侵蚀垫主要增强了非软体动物群落的物种和营养多样性(即,丰富了行会的丰富性和多样性),而贻贝的添加则主要增强了依法动物群落的物种和营养多样性(无论其位置如何)。在瓦登海西部的裸露地点,与贻贝较多的东部地点相比,添加贻贝的影响量更大,这可能是由于非生物胁迫缓解相对较强。我们得出的结论是,提供结构和沉积物稳定的物种(例如造礁的双壳类和管状蠕虫)构成了营养多样的底栖生物群落的基础。因此,在瓦登海等潮间软底生态系统中,其保护和恢复对于整个生态系统功能至关重要。 (C)2015 Elsevier B.V.保留所有权利。

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    Royal Netherlands Inst Sea Res NIOZ, Dept Marine Ecol, NL-1790 AB Den Burg, Netherlands|Univ Groningen, Ctr Ecol & Evolutionary Studies, Anim Ecol Grp, NL-9700 CC Groningen, Netherlands|Altenburg & Wymenga Ecol Consultants, NL-9269 TZ Veenwouden, Netherlands;

    Univ Groningen, Ctr Ecol & Evolutionary Studies, Community & Conservat Ecol Grp, NL-9700 CC Groningen, Netherlands;

    Royal Netherlands Inst Sea Res NIOZ, Dept Marine Ecol, NL-1790 AB Den Burg, Netherlands;

    Univ Groningen, Ctr Ecol & Evolutionary Studies, Marine Benth Ecol & Evolut, NL-9700 CC Groningen, Netherlands;

    Univ Groningen, Ctr Ecol & Evolutionary Studies, Marine Benth Ecol & Evolut, NL-9700 CC Groningen, Netherlands;

    Royal Netherlands Inst Sea Res NIOZ, Dept Marine Ecol, NL-1790 AB Den Burg, Netherlands;

    Royal Netherlands Inst Sea Res NIOZ, Dept Marine Ecol, NL-1790 AB Den Burg, Netherlands|Univ Groningen, Ctr Ecol & Evolutionary Studies, Anim Ecol Grp, NL-9700 CC Groningen, Netherlands;

    Univ Groningen, Ctr Ecol & Evolutionary Studies, Community & Conservat Ecol Grp, NL-9700 CC Groningen, Netherlands;

    Univ Groningen, Ctr Ecol & Evolutionary Studies, Community & Conservat Ecol Grp, NL-9700 CC Groningen, Netherlands|Radboud Univ Nijmegen, Fac Sci, Inst Water & Wetland Res, Dept Aquat Ecol & Environm Biol, NL-6525 AJ Nijmegen, Netherlands;

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  • 正文语种 eng
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  • 关键词

    Biotic structure; Ecosystem engineers; Mytilus edulis; Sediment stability; Trophic diversity; Wadden Sea;

    机译:生物结构;生态系统工程师;可食的Mytilus;沉积物的稳定性;营养多样性;沃登海;

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