4 Corresponding author: charles_van_riper@ usgs.gov; 520-491-0721 ABSTRACT: We studied great gray owls (Strix nebulosa Forster) in Yosemite National Park, California, measuring variables that could potentially influence patterns of occurrence and conservation of this stateendangered species. We found that owl presence was closely tied to habitat (red fir (Abies magnifica A. Murray) and the abun...

wetlands in the lower reaches of songhua river (lrsr), northeast china, are rich in biodiversityand natural resources, which provide crucial staging and wintering habitats for various endangered species.however, in the past five decades, the size of this wetland area has decreased, and its quality has deteriorated because of increased natural and human activities. wetland restoration is critica...

1. Habitat loss and fragmentation are the principal causes of the loss of biological diversity. In addition, parasitic diseases are an emerging threat to many animals. Nevertheless, relatively few studies have tested how habitat loss and fragmentation influence the prevalence and richness of parasites in animals. 2. Several studies of nonhuman primates have shown that measures of human activity...

Habitat loss and fragmentation are the greatest threats to the endangered Florida panther (Puma concolor coryi). We developed a data-based habitat model and userfriendly interface so that land managers can objectively evaluate Florida panther habitat. We used a geographic information system (GIS) and the Mahalanobis distance statistic (D) to develop a model based on broad-scale landscape charac...

Let us first take what is not a simple example, since it was the path along which I came to this idea of ecology : scientific practices, and more particularly physics. Physics as a practice is in dire need of a new habitat, since from its birth as the first so-called "modern science" its claims were entangled with its historical "habitat", and since those claims did survive this habitat. As a r...

9 Microgeographic variability in fitness-relevant traits may be more common than 10 previously appreciated. The fitness of many vertebrates is directly related to their locomotor 11 capacity, a whole-organism trait integrating behavior, morphology, and physiology. Because 12 locomotion is inextricably related to context, I hypothesized that it might vary with habitat 13 structure in a wide-rang...

Riparian thickets of East Africa harbor a large number of endemic animal and plant species, but also provide important ecosystem services for the human being settling along streams. This creates a conflicting situation between nature conservation and land-use activities. Today, most of this former pristine vegetation is highly degraded and became replaced by the invasive exotic Lantana camara s...