Ebenman Bo, Jonsson Tomas
Department of Biology, IFM, Linköping University, SE-58183 Linköping, Sweden.
Trends Ecol Evol. 2005 Oct;20(10):568-75. doi: 10.1016/j.tree.2005.06.011. Epub 2005 Jul 11.
Owing to interdependences among species in ecological communities, the loss of one species can trigger a cascade of secondary extinctions with potentially dramatic effects on the functioning and stability of the community. It is, therefore, important to assess the risk and likely extent of secondary extinctions. Community viability analysis is a new technique that can be used to accomplish this goal. The analysis can also be used to identify fragile community structures and keystone species and, hence, to provide guidelines for conservation priorities. Here, we describe the principles underlying community viability analysis and review its contributions to our understanding of the response of ecological communities to species loss.
由于生态群落中物种之间的相互依存关系，一个物种的丧失可能引发一系列次生灭绝，对群落的功能和稳定性产生潜在的巨大影响。因此，评估次生灭绝的风险和可能程度非常重要。群落生存力分析是一种可用于实现这一目标的新技术。该分析还可用于识别脆弱的群落结构和关键物种，从而为保护优先级提供指导。在此，我们描述群落生存力分析的基本原理，并回顾其对我们理解生态群落对物种丧失的反应所做的贡献。
