Landscape change induced by humans can alter the environmental conditions and thus promote unusually rapid evolutionary changes and/or at remarkably small spatial scales. In a managed property and a natural reserve situated less than 10 km apart, we tested for morphological differentiation of a migratory insectivorous bird, the red-necked nightjar (Caprimulgus ruficollis).

Measuring the quality of the nutritional resources available to wild herbivores is critical to understanding trophic regulation processes. However, the direct assessment of dietary nutritional characteristics is usually difficult, which hampers monitoring nutritional constraints in natural populations. The feeding ecology of ruminant herbivores has been often assessed by analyzing fecal nitrogen (FN) concentrations, although this method has been less evaluated in other taxa. This study...

Joint effects of climate warming and other stressors are potentially complex and difficult to predict. In stream ecosystems, exotic riparian species have the potential to alter leaf-shredding detritivorous invertebrate assemblages and leaf litter breakdown due to differences in the quality of litter inputs. This is the case for Eucalyptus plantations, which are widespread, occurring along riparian corridors of streams around the world.

While genetic diversity is hypothesized to be an important factor explaining invasion success, there is no consensus yet on how variation in source populations or demographic processes affects invasiveness. Mitochondrial DNA haplotypic and microsatellite genotypic data were used to investigate levels of genetic variation and reconstruct the history of replicate invasions on three continents in a globally invasive bird, the monk parakeet.

Large body-sized avian scavengers, including the Egyptian vulture, are globally threatened due to human-related mortality so guidelines quantifying the efficacy of different management approaches are urgently needed.