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首页> 外文期刊>Environmental Entomology >Effects of Stream Temperature and Substrate Type on Emergence Patterns of Plecoptera and Trichoptera From Northeastern United States Headwater Streams
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Effects of Stream Temperature and Substrate Type on Emergence Patterns of Plecoptera and Trichoptera From Northeastern United States Headwater Streams

机译：流温和底物型对美国东北地区地区颌骨流的出苗模式的影响

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摘要

The timing and spatial distribution of aquatic insect emergence is linked to the abiotic and biotic environment in streams. Studies of aquatic insect emergence are needed to generate baseline data to identify potential shifts in phenology and habitat-related emergence with global change. The purpose of this study was to 1) compare the timing of Plecoptera (stonefly) species emergence between two streams with different thermal regimes and 2) characterize the distribution of emerging Plecoptera and Trichoptera (caddisflies) from wood, rock, gravel, and sand substrates in five forested, headwater streams. Emergence timing and duration varied among Plecoptera species, with Ostrocerca albidipennis (Walker) (Plecoptera: Nemouridae) emerging only in May and four species in the genus Leuctra (Plecoptera: Leuctridae) collectively emerging throughout the summer (May to September). We observed earlier emergence of Amphinemura nigritta (Provancher) (Plecoptera: Nemouridae) and a longer total emergence period for Leuctra ferruginea (Walker) (Plecoptera: Leuctridae) in the stream with similar to 1.5 degrees C warmer temperatures, which suggested that some insects may experience phenological shifts in streams with subtle differences in temperature.The abundance of plecopteran and trichopteran taxa emerging from wood was generally greater than for gravel or sand, and sand was the least preferred emergence substrate. The results suggest that human actions that decrease large wood and increase fine sedimentation may decrease habitat quality for many insect larvae and limit preferred emergence substrates.
机译：水生昆虫出苗的时序和空间分布与流中的非生物和生物环境相关联。需要对水生昆虫出现的研究产生基线数据，以确定潜在的全球变革潜在的候选和栖息地出现的转变。本研究的目的是1）比较Plecoptera（Themfly）物种在两条流动之间的出现的时序，不同的热量制度和2）表征来自木材，岩石，砾石和沙子基板的新兴Plecoptera和Trichoptera（Caddisflies）的分布在五个森林的落地溪流中。嗜血型时序和持续时间不同，蛇皮松（Plecoptera）（Plecoptera：nemouridae）仅在5月和4月（Plecoptera：Leuctridae）中出现的5月和四种物种，整个夏天（5月至9月）都是新兴的。我们观察到早期出现amphinemura nigritta（Plecoptera：nemouridae）和Leuctra Ferruginea（Plecoptera：Leuctridae）在流中的较长时间的出苗期间，其在溪流中具有类似于1.5摄氏度的温暖温度，这表明一些昆虫可能在温度下具有微妙差异的溪流中的体验斑点变化。从木材中出现的Plecopteran和Trichopteran的速度通常大于砾石或沙子，并且砂是最不优选的出苗基材。结果表明，减少大型木材和提高细沉降的人类行为可能会降低许多昆虫幼虫的栖息地质量，并限制优选的出苗基材。

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  • 来源
    《Environmental Entomology》 |2019年第6期|共11页
  • 作者

    Cheney Kristin N.; Roy Allison H.; Smith Robert F.; DeWalt R. Edward;

  • 作者单位

    Univ Massachusetts US Geol Survey Massachusetts Cooperat Fish &

    Wildlife Res Unit Dept Environm Conservat 160 Holdsworth Way Amherst MA 01003 USA;

    Univ Massachusetts US Geol Survey Massachusetts Cooperat Fish &

    Wildlife Res Unit Dept Environm Conservat 160 Holdsworth Way Amherst MA 01003 USA;

    Univ Massachusetts US Geol Survey Massachusetts Cooperat Fish &

    Wildlife Res Unit Dept Environm Conservat 160 Holdsworth Way Amherst MA 01003 USA;

    Univ Illinois Prairie Res Inst Illinois Nat Hist Survey 1816 South Oak St Champaign IL 61820 USA;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 昆虫学;
  • 关键词

    emergence; phenology; temperature; stonefly; caddisfly;

    机译：出现;候选;温度;股票;caddisfly;

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