Journal
BIOMETRICS
Volume 69, Issue 1, Pages 274-281Publisher
WILEY
DOI: 10.1111/j.1541-0420.2012.01824.x
Keywords
Habitat modeling; Location-only; Maximum entropy; Poisson likelihood; Presence-only data; Use-availability
Funding
- Australian Postgraduate Award
- Australian Research Council [DP0985886]
- Australian Research Council [DP0985886] Funding Source: Australian Research Council
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Modeling the spatial distribution of a species is a fundamental problem in ecology. A number of modeling methods have been developed, an extremely popular one being MAXENT, a maximum entropy modeling approach. In this article, we show that MAXENT is equivalent to a Poisson regression model and hence is related to a Poisson point process model, differing only in the intercept term, which is scale-dependent in MAXENT. We illustrate a number of improvements to MAXENT that follow from these relations. In particular, a point process model approach facilitates methods for choosing the appropriate spatial resolution, assessing model adequacy, and choosing the LASSO penalty parameter, all currently unavailable to MAXENT. The equivalence result represents a significant step in the unification of the species distribution modeling literature.
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