Ecological-Niche Factor Analysis: How To Compute Habitat-Suitability Maps Without Absence Data?

We propose a multivariate approach to the study of geographic species distribution, which does not require absence data. Building on Hutchingson`s concept of the ecological niche , this this factor analysis compares in the multidimensional space of…

Context. The negative effects of agricultural intensification and policies, use of pesticides, fertilisers and mechanised harvesting on several populations of pseudo-steppe birds have increasingly required more detailed and effective habitat…

Understanding the basis of habitat choice having important implications for explaining the distribution of organisms, as well as helping to differentiate between habitats of different quality for effective management. In this study, the effects of…

We propose here some refinements of the ecological-niche factor analysis (ENFA) to describe precisely one organism's habitat selection. The ENFA is based on the concept of the ecological niche, and provides a measure of the realised niche within the…

A new approach to species distribution modelling based on unsupervised classification via a finite mixture of GAMs incorporating habitat suitability curves is proposed. A tailored EM algorithm is outlined for computing maximum likelihood estimates.…

Predicting species distribution and habitat suitability (HS) modelling, across broad spatial scales, is now a major challenge in marine ecology. The resulting knowledge is of considerable use in supporting the implementation of environmental…

Predicting species distribution and habitat suitability is of considerable use in supporting the implementation of environmental legislation, protection and conservation of marine waters and ecosystem-based management. As other seagrasses, Zostera…

European bat species are strictly protected by law, and the Member States of the European Union are obliged to record species condition and to contribute to their conservation. Habitat-suitability models are an essential aid in assessing the…

Background: Suitability of environmental conditions determines a species distribution in space and time. Understanding and modelling the ecological niche of mosquito disease vectors can, therefore, be a powerful predictor of the risk of exposure to…

Ecological-niche factor analysis (ENFA) is a multivariate approach to study geographic distribution of species on a large scale with only "presence" data. It has been widely applied in many fields including wildlife management, habitat assessment…