Abundance patterns of filter-feeding Caddisflies (Trichoptera : Hydropsychidae) and seston in a Montana (U.S.A.) lake outlet
Abundance patterns of filter-feeding Caddisflies (Trichoptera : Hydropsychidae) and seston in a Montana (U.S.A.) lake outlet
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蒙大拿州（美国）湖口滤食性石蛾（毛翅目：水螅科）和石蛾的丰度模式
DOI：
10.1007/bf00030081
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发表时间：
1979
期刊：
影响因子：
2.6
通讯作者：
M. W. Oswood
中科院分区：
文献类型：
--
作者：
M. W. Oswood
在蒙大拿州（美国）湖出口溪流中研究了四种网纺石蛾（毛翅目：Hydropsychidae）的丰度模式。在湖泊排污口附近，水螈科的总密度达到非常高的密度（X > 1400 / 0.2 m2），但在下游急剧下降。丰度模式通常与已发表的湖泊出水口滤食性/水生相互作用模型一致。与其他物种相比，苔藓覆盖的基质上的幼虫密度更大，并且一种物种占据了水流速度较低的栖息地。与预期相反，下游 Seston 浓度增加。塞斯顿的营养质量对于预测溪流滤食动物的丰度可能很重要。
The abundance patterns of four species of net-spinning caddisflies (Trichoptera : Hydropsychidae) were studied in a Montana (U.S.A.) lake outlet stream. Total Hydropsychidae reached very high densities (X > 1400 / 0.2 m2) near the lake outfall but declined precipitously downstream. Abundance patterns generally agree with a published model of filter-feeder / seston interactions in lake outlets. Larval densities were greater on moss-covered substrates and one species occupied habitats of lower water velocity compared to other species. Seston concentrations increased downstream contrary to expectation. Nutrient quality of seston may be important in predicting abundance of stream filter-feeders.