Natural and sexual selection shape the evolution of species but the interplay between them is poorly understood. Two phylogenetic studies on birds have suggested that species with greater sexual dichromatism have a broader habitat use. We show that in agamid lizards, species with more elaborate secondary sexual traits are also ecologically more opportunistic. Species with greater dimorphism in ...

The road-effect zone is the area in which ecological effects extend outward from a road. Dispersed off-highway vehicle (OHV; e.g., four-wheelers and snowmachines) activity on rural road networks creates a disturbance that reduces the effective amount of wildlife habitat and therefore has the potential for an extensive road-effect zone. Consequently, land managers must consider the trade-offs be...

As the basis of land resource allocation and use planning, land-use functions (LUFs) are important indicators for evaluating sustainable development environments. It is essential to evaluate LUFs a specific area from perspective comprehensive functions. This paper takes 38 districts counties in Chongqing, China, as an example construct state-space model three aspects, production factors, living...

This study identified the criteria that are valued among Internet users when rating and accessing health information on the World Wide Web. Participants (N = 578) successfully completed a Web-based survey by ranking 12 criteria for evaluating health information. Then, by applying those same evaluation criteria, rated the quality of three preselected health-related websites and indicated their p...

Understanding the mechanisms of trait selection at the scale of plant communities is a crucial step toward predicting community assembly. Although it is commonly assumed that disturbance and resource availability constrain separate suites of traits, representing the regenerative and established phases, respectively, a quantification and test of this accepted hypothesis is still lacking due to l...

1. Resource selection estimated by logistic regression is used increasingly in studies to identify critical resources for animal populations and to predict species occurrence. 2. Most frequently, individual animals are monitored and pooled to estimate population-level effects without regard to group or individual-level variation. Pooling assumes that both observations and their errors are indep...