Publications by authors named "Roxanne Richard"

Divergent natural selection should lead to adaptive radiation-that is, the rapid evolution of phenotypic and ecological diversity originating from a single clade. The drivers of adaptive radiation have often been conceptualized through the concept of "adaptive landscapes," yet formal empirical estimates of adaptive landscapes for natural adaptive radiations have proven elusive. Here, we use a 17-year dataset of Darwin's ground finches (Geospiza spp.

View Article and Find Full Text PDF

Movement patterns and habitat selection of animals have important implications for ecology and evolution. Darwin's finches are a classic model system for ecological and evolutionary studies, yet their spatial ecology remains poorly studied. We tagged and radio-tracked five (three females, two males) medium ground finches () to examine the feasibility of telemetry for understanding their movement and habitat use.

View Article and Find Full Text PDF

Unlabelled: Depression and anxiety are among the most prevalent disorders in the adolescent population. An increase of the prevalence of these disorders is taking place during adolescence, this developmental period being experienced in synchronicity with the high school transition. Also, some studies suggested the existence of a developmental trend between the onset of anxiety and depression.

View Article and Find Full Text PDF