A Text Book of Environmental Science


Book Description

This book is eminently useful for the students pursuing Under Graduate and Post Graduate Courses in Environmental science/ Environmental Engineering / Environmental Biotechnology and environmentalists.




Biodiversity in Environmental Assessment


Book Description

First of its kind and unique in its blend of theoretical and practical approaches for mainstreaming biodiversity in impact assessment.




Ecosystems and Human Well-being


Book Description

Ecosystems and Human Well-Being is the first product of the Millennium Ecosystem Assessment, a four-year international work program designed to meet the needs of decisionmakers for scientific information on the links between ecosystem change and human well-being. The book offers an overview of the project, describing the conceptual framework that is being used, defining its scope, and providing a baseline of understanding that all participants need to move forward. The Millennium Assessment focuses on how humans have altered ecosystems, and how changes in ecosystem services have affected human well-being, how ecosystem changes may affect people in future decades, and what types of responses can be adopted at local, national, or global scales to improve ecosystem management and thereby contribute to human well-being and poverty alleviation. The program was launched by United National Secretary-General Kofi Annan in June 2001, and the primary assessment reports will be released by Island Press in 2005. Leading scientists from more than 100 nations are conducting the assessment, which can aid countries, regions, or companies by: providing a clear, scientific picture of the current sta







Biodiversity and Livelihood: Lessons from Community Research in India


Book Description

Biodiversity and Livelihood: Lessons from Community Research in India Is a compilation of research articles on the ecological biodiversity and local conservation efforts of selected regions in India, and among local communities throughout the county. 18 chapters have been contributed by experts in ecology, sustainability and ethnic studies in India. The chapters provide information on a wide range of tops which cover local communities, their agricultural practices and the ecological relationships between their community and the species on which their livelihood depends. Contributions emphasize different aspects of these topics, such as observational ecological information about the aforementioned regions and communities, the local biodiversity, tribal customs of ethnic communities that are linked to conservation, specific programs which are aimed at the conservation of specific plant and animal species endemic to the region, the benefits shared by the communities involved with conservation programs and recommendations shared by the authors for sustainable management of the regional ecosystem and its resources. Readers will find a wealth of information about biodiversity conservation in different regions in India (most notably the western and eastern ghats and provinces such as Kerala and Andhra Pradesh), from a basic and applied perspective. The book is, therefore, an informative reference for conservationists, ecologists, environmentalists and ethnologists who are studying the biodiversity and conservation of India. Readers involved in sustainable development programs in the region will also find the content valuable to their knowledge.




Neem: Today and in the New Millennium


Book Description

The chemicals from plant sources, generally termed as phytochemicals, play an important role in acceptance or rejection of the plant by the pests as they could be distasteful or toxic on one hand or on the other hand specialist herbivores have the capability to feed on many such chemicals, as they are able to process these natural products in a manner that is beneficial to them. In the wake of increasing environmental degradation due to burgeoning synthetic chemicals, there has been a process going on to rediscover the usefulness of plants and herbs and a continued effort for more than 2 decades has been to study the green products for cures for several ailments and pest management. In fact, according to Indian Medicinal Plants: A Sectoral Study, the global trade for medicinal plants amounts to about US $ 60 billion and the world demand continues to grow at the rate of 7 per cent per annum. Although many such plants are known in literature, neem has been one of trees with mani-fold virtues. Indian neem tree, Azadirachta indica A. Juss, which is a large evergreen tree, is an outstanding example among plants that has been subject matter of numerous scientific studies concerning its utilization in medicine, industry and agriculture. So far neem preparations have been evaluated against more than 500 species of insects and more than 400 hundred are reported to be susceptible at different concentrations.







Recovering Biodiversity in Indian Forests


Book Description

This book demonstrates how varying levels of human disturbance manifested through different management regimes influence composition, richness, diversity and abundance of key mammal, bird and plant species, even within ecologically similar habitats. Based on our results, we show the critical importance of the ‘wildlife preservation’ approach for effective biodiversity conservation. The study also provides examples of a practical application of rigorous methods of quantitative sampling of different plant and animal taxa as well as human influences, thus serving as a useful manual for protected area managers. Protected areas of various kinds have been established in India with the goal of arresting decline in, and to provide for, recovery of biodiversity and ecosystem services. A model that targets ‘wildlife preservation’ under state ownership is practiced across the country. However, forests in India are under intensive human pressure and varying levels of protection; therefore, protected areas may also experience open-access resource use, a model that is being aggressively advocated as a viable alternative to ‘preservationism’. We have evaluated the conservation efficacy of alternative forest management models by quantifying levels of biodiversity under varied levels of access, resource extraction and degree of state-sponsored protection in the Nagarahole forest landscape of southwestern India.




Nurturing Biodiversity


Book Description