Species can show strong variation of local abundance across their ranges. Recent analyses
suggested that variation in abundance can be related to environmental suitability, as the …

Relationships between species and their habitats are not always constant. Different
processes may determine changes in species-habitat association: individuals may prefer …

European cave salamanders of the genus Hydromantes are a group of eight species
endemic to Italy and south-eastern France. Knowledge on the trophic niche of European …

The extent to which closely related species share similar niches remains highly debated.
Ecological niches are increasingly analysed by combining distribution records with broad …

Predator species and body size represent critical factors that have differential effects on prey
populations, as well as overall community structure. However, investigations of how …

Identifying the historical processes that drive microhabitat transitions across deep time is of
great interest to evolutionary biologists. Morphological variation can often reveal such …

The trophic niche is a life trait that identifies the consumer's position in a local food web.
Several factors, such as ontogeny, competitive ability and resource availability contribute in …

Specialization is typically inferred at population and species level but in the last decade
many authors highlighted this trait at the individual level, finding that generalist populations …

Environmental gradients are instrumental in shaping the distribution and local abundance of
species because at the most fundamental level, an organism's performance is constrained …

For many organisms, constraints on activity increase energetic costs, which ultimately
reduce the suitability of a particular habitat. Mechanistic species distribution models often …