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首页> 外文期刊>Limnology >Differences in patches of retention among leaves, woods and small litter particles in a headwater stream: the importance of particle morphology
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Differences in patches of retention among leaves, woods and small litter particles in a headwater stream: the importance of particle morphology

机译：上游水源中的叶子，木材和小垫料颗粒之间的保留斑块差异：颗粒形态的重要性

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摘要

The location of retention in the channel can influence invertebrate assemblage and breakdown processes associated with a litter particle in heterogeneous streams. We previously identified four types of litter patches that formed on riffles or different locations in pools (middle, edge, alcove), and demonstrated that middle patches had higher litter processing rates than the other patches. In this study, we examined differences in retention on the four patch types among leaves, woody materials and small litter particles, and among leaves of different sizes, by sampling natural and manipulated litter particles that were newly retained. Proportionally more woody materials, leaf pieces (16–50 mm) and particulate organic matter (1–16 mm) than leaves (>50 mm) were retained on middle patches, while proportionally more leaves than the other litter particles were retained on riffle and edge patches. The retention pattern of leaf species with different leaf sizes and a released experiment of leaf particles revealed that proportionally more leaf particles with smaller sizes were retained on middle patches. The flexibility, shape and dryness of litter particles also seem to affect the location of retention in the channel. These results suggest that the morphology of litter particles have the potential to affect the biological use and breakdown of litter particles through determining the location of retention within the channel. The size of leaves and processes that alter leaf size may have important roles on the breakdown and utilisation by invertebrates in these heterogeneous streams.
机译：通道中保留位置的位置可能会影响非均质流中与垃圾颗粒相关的无脊椎动物组装和分解过程。我们之前确定了在池壁或中间不同位置（中间，边缘，凹室）上形成的四种类型的垫料斑块，并证明了中间垫块的垫料处理率高于其他垫块。在这项研究中，我们通过采样新保留的天然和经过处理的垃圾颗粒，检查了四种补丁类型在叶子，木质材料和小的凋落颗粒之间以及在大小不同的叶子之间的保留差异。在中部斑块上保留的木质材料，叶块（16–50 mm）和颗粒状有机物（1–16 mm）比叶子（> 50 mm）多，而在浅滩和河riff上保留的叶子比其他垃圾颗粒多。边缘补丁。具有不同叶尺寸的叶片物种的保留模式以及叶颗粒的释放实验表明，成比例的更多小尺寸叶颗粒保留在中间斑块上。垃圾颗粒的柔韧性，形状和干燥度也似乎会影响通道中滞留的位置。这些结果表明，通过确定通道内的保留位置，垃圾颗粒的形态可能会影响垃圾颗粒的生物利用和分解。叶子的大小和改变叶子大小的过程可能对这些异质流中无脊椎动物的分解和利用具有重要作用。

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  • 来源
    《Limnology》 |2008年第1期|47-55|共9页
  • 作者

    Sohei Kobayashi; Takashi Kagaya;

  • 作者单位

    Laboratory of Forest Zoology Graduate School of Agricultural and Life Sciences University of Tokyo Yayoi Bunkyo-ku Tokyo 113-8657 Japan;

    Laboratory of Forest Zoology Graduate School of Agricultural and Life Sciences University of Tokyo Yayoi Bunkyo-ku Tokyo 113-8657 Japan;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Plant litter; Particle morphology; Leaf size; Retention; Litter patches; Pools; Riffles;

    机译：植物凋落物;颗粒形态;叶大小;保留率;凋落物斑块;水池;Riffles;

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