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首页> 外文期刊>Aquatic Sciences >Warming, and the presence of a dominant shredder, drive variation in decomposer communities in a mountain stream
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Warming, and the presence of a dominant shredder, drive variation in decomposer communities in a mountain stream

机译：气候变暖以及主要碎纸机的存在，促使山区河流分解者社区发生变化

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摘要

We assessed the effects of rising temperature and presence of a dominant detritivore (Allogamus laure-atus; Trichoptera, Limnephilidae) on the decomposition of submerged oak litter (Quercus robur L.) and associated detritivore and fungal communities in a mountain stream in central Portugal. It was divided longitudinally, with one half maintained at ambient temperature (mean = 12.4 ℃) while the other was warmed ～3 ℃ above ambient temperature. Oak leaves in litter bags were incubated in both stream halves, with half of the bags containing one A. laureatus larva. Replicate bags were collected over 6 weeks to determine litter mass remaining and the detritivore and fungal communities. A. laureatus stimulated decomposition of oak litter and colonization by other shredders at ambient temperature. It also increased fungal biomass at increased temperature, and changed the community of fungi. Higher temperature inhibited A. laureatus activity, resulting in a substantial change in the strength of interactions within both fungal and detritivore assemblages, with important consequences for leaf litter decomposition.
机译：我们评估了葡萄牙中部山区河流的温度升高和主要有害生物（Allogamus laure-atus; Trichoptera，Limnephilidae）的存在对淹没橡木垃圾（Quercus robur L.）以及相关有害生物和真菌群落分解的影响。纵向划分，一半保持在环境温度下（平均= 12.4℃），另一半保持在环境温度以上〜3℃。将垃圾袋中的橡树叶在两个半溪中孵育，其中一半包含一个月桂曲霉幼虫。在6周内收集重复袋，以确定剩余的垫料质量以及有害生物和真菌群落。在环境温度下，A。laureatus刺激了橡树垃圾的分解和其他切碎机的定殖。它还在升高的温度下增加了真菌的生物量，并改变了真菌的群落。较高的温度抑制了月桂芽孢杆菌的活性，导致真菌和有害杂种组合体内相互作用强度的显着变化，这对凋落物分解产生了重要影响。

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  • 来源
    《Aquatic Sciences》 |2015年第1期|129-140|共12页
  • 作者

    Catia Domingos; Veronica Ferreira; Cristina Canhoto; Christopher Swan;

  • 作者单位

    IMAR-Institute of Marine Research, MARE-Marine and Environmental Sciences Center, Faculty of Sciences and Technology, University of Coimbra, 30045171 Coimbra, Portugal;

    IMAR-Institute of Marine Research, MARE-Marine and Environmental Sciences Center, Faculty of Sciences and Technology, University of Coimbra, 30045171 Coimbra, Portugal;

    IMAR-Institute of Marine Research, MARE-Marine and Environmental Sciences Center, Faculty of Sciences and Technology, University of Coimbra, 30045171 Coimbra, Portugal;

    Department of Geography and Environmental Systems, University of Maryland, Baltimore County, Baltimore, MD 21250, USA;

  • 收录信息 美国《科学引文索引》(SCI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Aquatic communities; Climate change; Ecosystem functioning; Allogamus laureatus; Species interactions;

    机译：水生社区;气候变化;生态系统功能;月桂花;物种相互作用;

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