Evaluation of the effectiveness of protected areas networks for conserving diversity is a demanding topic in biological conservation. In the last few years, there has been an increasing number of studies on species distribution modelling which can be easily used to test the efficiency of reserve networks. Unfortunately, this effort has been focused on the so called charismatic species. Our main...

Introduction: Huemul (Hippocamelus bisulcus Molina) is the most threatened flag species of Southern Patagonia, where conservation efforts were not effective to avoid the retraction of its distribution area. Habitat quality modeling can assist to design better management strategies for regional conservation planning. The objective was to elaborate one habitat suitability map for huemul, defining...

Abstract The study of the species’ climatic niche is an excellent proxy their vulnerability to global climate change. It well known that species with greater marginality or a smaller breadth are most vulnerable However, these measures have never been contextualized regarding shortfalls in biogeography: Linnean and Darwinian shortfalls. Here based on Liolaemidae, one diverse families tetrapods, ...

Although all habitat-suitability modelling methods are inherently linked to the Hutchinsonian definition of the ecological niche, those based on the environmental envelopes are its direct geometrical application. Their common principle is to model in the environmental space, a hyper-surface, the envelope, encompassing all or part of the observation points. This paper compares four such methods:...

Genetic divergence of mitochondrial DNA does not necessarily correspond to reproductive isolation. However, if mitochondrial DNA lineages occupy separate segments of environmental space, this supports the notion of their evolutionary independence. We explore niche differentiation among three candidate species of crested newt (characterized by distinct mitochondrial DNA lineages) and interpret t...

Introduction Conclusions References Tables Figures ◭ ◮ ◭ ◮ Back Close Full Screen / Esc Abstract Introduction Conclusions References Tables Figures ◭ ◮ ◭ ◮ Back Close Full Screen / Esc Abstract In the northwestern Mediterranean Sea, sperm whales, pilot whales and Risso's dolphins prey on cephalopods exclusively or preferentially. In order to evaluate their competition , we modelled their habita...

Modelling species distributions with presence data from atlases, museum collections and databases is challenging. In this paper, we compare seven procedures to generate pseudoabsence data, which in turn are used to generate GLM-logistic regressed models when reliable absence data are not available. We use pseudo-absences selected randomly or by means of presence-only methods (ENFA and MDE) to m...