Seagrass is an important indicator of estuary condition. Results of a comprehensive investigation of the seagrass demographics in the Barnegat Bay-Little Egg Harbor (BB-LEH) Estuary during 2008 indicate ongoing degradation of seagrass habitat associated with increasing eutrophic conditions. Surveys of seagrass beds in BB-LEH from spring to fall in 2008 show that the seagrass (predominantly Zost...

Interspecific interactions are a major determinant of stability in ecological communities and known to vary with biotic abiotic conditions. Deforestation is the primary driver ongoing sixth mass extinction, yet its effect on species remains largely unexplored. We investigate how deforestation affects using complex systems model co-occurrence dataset 363 bird species, observed across 134 sites, ...

Quantitative studies of biotic homogenization can provide useful insights into conservation problems when used appropriately, but can be dangerously misleading when they are not. By separating the concept of biotic homogenization at the global scale from the study of biotic homogenization at spatiallyand temporally-explicit scales, researchers can avoid many of the subtle pitfalls inherent in h...

Modeling species' habitat requirements are crucial to assess impacts of global change, for conservation efforts and to test mechanisms driving species presence. While the influence of abiotic factors has been widely examined, the importance of biotic factors and biotic interactions, and the potential implications of local processes are not well understood. Testing their importance requires addi...

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In this study, we analyzed the effects of grazing on native and endemic plant diversity, as well its relationship with pastoral value along a gradient abiotic biotic factors types land management in mountainous area central-eastern Sardinia, Italy. Plant diversity was estimated by conducting floristic survey within plots. total, 231 species were recorded 63 plots distributed study area, total n...

subalpine rangeland as a rara avis ecosystem is very important because ofecological features. consistency and resistance of this ecosystem is so frangible and itsnatural equilibrium is instable due to the effects of biotic and abiotic factors. the landslideas one of negative consequences in upland area is seen in masoleh watershed (north ofiran). this study has investigated the roles of biotic ...

In this paper the basic geophysical and ecological principles are jointly analyzed that allow the landmasses of Earth to remain moistened sufficiently for terrestrial life to be possible. 1. Under gravity, land inevitably loses water to the ocean. To keep land moistened, the gravitational water runoff must be continuously compensated by the atmospheric ocean-to-land moisture transport. Using da...