岛屿群落组成的嵌套格局及其应用

摘要/Abstract

摘要： 近年来,岛屿群落组成的嵌套结构引起了众多研究者的关注。在一个岛屿生境系统中,小岛屿中出现的物种大多数也出现在物种相对丰富的大岛屿中。这是一种非随机的物种分布格局。嵌套结构被认为是分析群落组成机制的重要工具,并引发了自然保护区最优化设计原理的新一轮争议。然而,随着研究的深入,围绕嵌套结构的意义、方法学、成因和普适性等方面出现了许多不同的观点与假说。本文就上述方面作了系统的介绍和分析,认为嵌套结构从群落的组成方面为岛屿生物地理学提供了新的视角,在保护生物学上具有重要意义。在成因上,仅考虑单因子的作用是偏狭的,多数是多因子综合作用的结果。在方法上,应充分认识不同方法的适应条件,以降低误差。嵌套结构并不是普适的,它受到如矩阵的大小和填充度、生物类群和生境的差异性等因素的影响.

关键词: 桃蚜, 吡虫啉, 次亚致死剂量弥雾, 生物测定, 时间-剂量-死亡率模拟

Abstract: Many studies showed that most species present on small islands also occurred on larger,more species-rich islands. Such a nonrandom distribution pattern was termed a "nestedness pattern". Nestedness has important implications for biological conservation,and it was thought as the focal principle in the SLOSS (single large or several small)debate in conservation biology other than the species-area relationship. Nevertheless,with further studies,especially with further insight of nestedness,various views,models and hypothesis had been put forward,concerning its implications,causalities,methodology and sensitivities. In this paper,the concept of nestedness,study methods,its implications for biological conservation,and existing disagreements among them were reviewed.

Key words: Myzus persicae, Imidacloprid, Low sublethal sprays, Bioassay, Time-concentration-mortality modeling

中图分类号:

陈水华, 王玉军. 岛屿群落组成的嵌套格局及其应用[J]. 生态学杂志, 2004, (3): 81-87.

CHEN Shuihua, WANG Yujun. Nestedness pattern of insular community assemblages and its applications[J]. cje, 2004, (3): 81-87.

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