Distribution of filter-feeding caddisflies (Trichoptera) and plankton drift in a Swedish lake-outlet stream

被引：11

作者：

Hoffsten P.-O. ^{[1
]}

机构：

[1] Dept. of Ecol. and Environ. Science, Section of Animal Ecology, Umeå University

来源：

Aquatic Ecology | 1999年 / 33卷 / 4期

关键词：

Phytoplankton; POC; Stream ecology; Trophic interaction; Zooplankton;

D O I：

10.1023/A:1009926509349

中图分类号：

学科分类号：

摘要：

The objectives of this investigation were to relate the longitudinal distribution of filter-feeding caddisflies to quality and quantity of seston, and to document factors facilitating coexistence among filter-feeding species, in a 4th-order lake-outlet stream in central Sweden. A sharp decline in abundance and biomass of filtering caddisflies was evident within 1 km from the lake outlet following negative power functions. In contrast to particulate organic carbon, significant reductions of both phytoplankton and zooplankton biomass, especially some large species, were recorded between the lake-outlet and 1.9 km downstream. Differences in longitudinal and temporal distribution provide evidence of resource partitioning between filtering species included.

引用

页码：377 / 386

页数：9

共 31 条

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