Impacts Of Water Diversion On Biotic Communities Of A River In A Dune Watershed

Stochastic Communities presents a theory of biodiversity by analyzing the distribution of abundances among species in the context of a community. The basis of this theory is a distribution called the "J distribution." This distribution is a pure hyperbola and mathematically implied by the "stochastic species hypothesis" assigning equal probabilities of birth and death within the population of each species over varying periods of time. The J distribution in natural communities has strong empirical support resulting from a meta-study and strong theoretical support from a theorem that is mathematically implied by the stochastic species hypothesis.

The Clean Water Act (CWA) requires that wetlands be protected from degradation because of their important ecological functions including maintenance of high water quality and provision of fish and wildlife habitat. However, this protection generally does not encompass riparian areasâ€"the lands bordering rivers and lakesâ€"even though they often provide the same functions as wetlands. Growing recognition of the similarities in wetland and riparian area functioning and the differences in their legal protection led the NRC in 1999 to undertake a study of riparian areas, which has culminated in Riparian Areas: Functioning and Strategies for Management. The report is intended to heighten awareness of riparian areas commensurate with their ecological and societal values. The primary conclusion is that, because riparian areas perform a disproportionate number of biological and physical functions on a unit area basis, restoration of riparian functions along America's waterbodies should be a national goal.

Applied geography, a new frontier in geographic discipline, distinguishes itself from other branches of geography through the application of geographical knowledge and its techniques in solving practical problems of the land and the environment. Explorations in Applied Geography is a felicitation volume in honour of Professor L.R. Singh, Department of Geography, University of Allahabad, who has established his international credentials as a leading exponent of Applied Geography. He considers public policy to be one of the applications of applied geographic principles, since many problems facing society today have a geographical dimension. To Professor L.R. Singh, Applied Geography is the strategy of the trinity of men, space and resources which need to be harmonized in advancing human well-being. This volume, contributed by geographers of eminence within the country and from other parts of the globe, focuses on the following thrust areas: • Natural and environmental hazards • Environmental change and management • Challenges of the human environment • Application of techniques of spatial analysis In a nutshell, the book emphasizes the important proactive role that the Applied Geography must play in the formulation of public policies and programmes for sustainable human development. This comprehensive and classic compendium will not only be useful to post-graduate students in geography but also provide new vistas in geographic research.