Living on the edge—Modelling habitat suitability for species at the edge of their fundamental niche
- 作者：Veronika Braunisch ; Kurt Bollmann ; Rol ; F. Graf ; Alex ; re H. Hirzel
- 关键词：Ecological Niche Factor Analysis (ENFA) ; Median algorithm ; Species distribution model ; Capercaillie ; Tetrao urogallus
- 刊名：Ecological Modelling
- 出版年：2008
- 期刊代码：49_03043800
- 类别：cp
- 出版时间：24 June 2008
- 卷：214
- 期：2-4
- 页码：153-167
- 文件大小：1147 K
摘要
Predictive species distribution models have become increasingly common in conservation management. Among them, envelope-based approaches like the Ecological Niche Factor Analysis (ENFA) are particularly advantageous, as they require only presence data. Based on the assumption that the absolute frequency of species presence is a direct indicator of habitat suitability (HS), habitat suitability indices (HSI) are computed. However, this assumption may be misleading when the scarcity of optimal habitat forces most of the individuals to live in suboptimal conditions. This often happens when the environmental conditions in the study area represent only a marginal part of the species fundamental niche.