| 水生生态系统中的捕食与生物多样性 |
| |
| 引用本文： | 刘正文.水生生态系统中的捕食与生物多样性[J].海洋湖沼通报,1997(2):19-24. |
| |
| 作者姓名： | 刘正文 |
| |
| 作者单位： | 中国科学院南京地理与湖泊研究所!南京，210008 |
| |
| 摘 要： | 捕食在水生生态系统中有重要的作用，是影响生物多样性的主要因素子之一。选择性的捕食中能使被喜食的猎物种类从水体中消失，使生物多样性降低。这种捕食也可能抑制优势种的发展，占免竞争排斥，提高猎生物多样性。
|
| 关 键 词： | 水生生态系统 捕食 生物多样性 移植 |
PREDATION AND BIODIVERSITY IN AQUATIC ECOSYSTEMS |
| |
| Liu Zhengwen.PREDATION AND BIODIVERSITY IN AQUATIC ECOSYSTEMS[J].Transaction of Oceanology and Limnology,1997(2):19-24. |
| |
| Authors: | Liu Zhengwen |
| |
| Abstract: | Predation plays an important role in aquatic ecosystems. It is one of the key factors in determining biodiversity. Selective predation can reduce biodiyersity bydriving the preferred prey to extinction. On the other hand, predation can also increase biodiversity, by removing the competitively dominant prey and avoiding competition exclucion. The relation between predator and prey is developed duringevolutionary course. The adaptation of a prey to an alien predator (e.g. introducedfish) may be very limited, and the predation by such alien predator may causeextinction of endemic prey specics. In order to conserve biodiversity, before introducing predators onc should investigate in detail the characters of morphology,elology and the behaviour of potential prey as well as predators. species introduction must be particularly careful when introducing a species into highland lakeswhere there is an isolated fauna and flora. |
| |
| Keywords: | aquatic ecosystems predation biodiversity species introduction |
| 本文献已被 CNKI 维普 等数据库收录！ |
