Shared community history strengthens plant diversity effects on below-ground multitrophic functioning
Angelos Amyntas, Benoit Gauzens, Marcel Ciobanu, Lara Warnke, Mark Maraun, Jörg-Alfred Salamon, Mona Merkle, Leonardo Bassi, Justus Hennecke, Markus Lange, Gerd Gleixner, Stefan Scheu, Nico Eisenhauer, Ulrich Brose
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群落历史共享强化了植物多样性对地下多营养功能的影响。
植物多样性与若干生态系统功能的关系随着时间的推移而增强。这表明,在物种丰富和物种贫乏的群落中,群落组装过程中生物相互作用的重组和相关的功能变化是不同的。这些变化的一个重要组成部分是植物和土壤群落历史之间的反馈。本研究探讨了植物丰富度和群落历史对土壤动物群落营养功能的交互作用。我们假设,与成熟群落相比,实验移除土壤或植物群落历史将削弱植物丰富度对土壤食物网多营养功能的积极作用。我们在长期的草地生物多样性试验中,通过比较三种处理(没有植物史、没有植物和土壤史、有~20年样地特定群落史的对照)的样地来验证这一假设。我们发现,在植物和土壤群落历史相同的群落中,植物丰富度与地下多营养功能之间的关系确实更强。我们的研究结果表明,人为干扰可以通过植物物种的丧失来影响土壤群落的功能,也可以通过阻止群落聚集过程中发展的反馈来影响土壤群落的功能。
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