Recurrent response patterns of a zooplankton community to whole‐lake fish manipulation
Recurrent response patterns of a zooplankton community to whole‐lake fish manipulation
复制标题
浮游动物群落对全湖鱼类操纵的反复响应模式
DOI：
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发表时间：
1994
期刊：
影响因子：
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通讯作者：
R. Wright
中科院分区：
文献类型：
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作者：
Xi He;Markus Scheurell;P. Soranno;R. Wright
摘要
1. 1984年至1991年进行的一系列全湖治理中，浮游食性鱼类被交替清除并重新放养到一个小型中营养湖中，导致浮游动物群落发生巨大变化。
2. 研究了浮游动物群落的响应模式，包括物种和规模结构以及年内群落变异性。无论操作的方向如何（即减少或增加浮游动物），未操作年份的浮游动物群落变化远低于操作年份。
3.浮游动物物种丰度的演替在第二次浮游食性鱼类清除中重复。该群落从体型较小的枝角动物、桡足类和轮虫，经过一个高丰富的全孔藻的中间状态，转变为以体型较大的水蚤为主的组合。
SUMMARY
1. In a series of whole-lake manipulations conducted from 1984 to 1991, planktivorous fishes were alternately removed and restocked in a small mesotrophic lake, resulting in dramatic changes in the zooplankton community.
2. Response patterns in the zooplankton community, which include species and size structure, and within-year community variability, were examined. Variation in the zooplankton community in unmanipulated years was much lower than that in manipulated years, regardless of direction of the manipulation (i.e. decreasing or increasing planktivory).
3. The succession of zooplankton species abundance was repeated in the second removal of planktivorous fishes. The community shifted from small-bodied cladocerans, copepods and rotifers, through an intermediate state with high abundance of Holopedium, to an assemblage dominated by large-bodied daphnids.