Invertebrate recolonization patterns in the hyporheic zone of a gravel stream
Invertebrate recolonization patterns in the hyporheic zone of a gravel stream
复制标题
砾石流潜流区无脊椎动物的再殖民模式
DOI：
10.4319/lo.2000.45.4.1000
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发表时间：
2000
期刊：
影响因子：
--
通讯作者：
J. M. Schmid
中科院分区：
文献类型：
--
作者：
J. M. Schmid
砾石流浅层中短期暴露(2-192小时)的无脊椎动物再繁殖显示出显著的深度差异。在浅表层(0-20 cm)，小型底栖动物的平均密度在66h内渐近稳定，大型底栖动物也有类似但不显著的模式。小型底栖动物的永久成员(如轮虫、摇蚊、环尾轮虫)是捕捉器最快的定居者。在较深层(20-50 cm)，小型和大型底栖动物迅速进入管道(2 H)，但无论是功率曲线还是渐近曲线都不能描述它们的定殖模式。非线性回归分析表明，进入管道的间隙泥沙数量与大型和小型底栖动物的丰度之间存在显著的关系。
Invertebrate recolonization at short‐term exposures (2–192 h) in the hyporheic zone of a gravel stream revealed significant depth‐specific differences. In the shallow hyporheic zone (0–20 cm), mean meiofaunal density increased asymptotically stabilizing within 66 h, a similar but nonsignificant pattern was found for macrofauna. Permanent meiofaunal members (e.g., rotifers, chironomids, cyclopoids) were the fastest colonizers of the traps. At the deeper hyporheos (20–50 cm) meiofauna and macrofauna entered the pipes rapidly (2 h) but neither a power curve nor an asymptotic curve described their colonization pattern. Nonlinear regression analysis indicated a significant relationship between amounts of interstitial sediment entering the pipes and abundances of macrofauna and meiofauna.