Invasive alien species are a major threat to biodiversity and ecosystems throughout the world. In India, a country with four of the world's most important 'biodiversity hotspots', the invasion of alien plants means risking a national ecological disaster with major social and economic consequences. Currently, there is insufficient information about invasive alien plants; their distribution, rate of spread and adaptability to new environments. This book reveals existing and potential invaders, evaluates the level of risk they pose to native species and suggests steps to manage spread and limit damage. Invaluable to policy-makers, this book is also required reading for researchers of invasive plants worldwide.
Invasion of non-native plant species, which has a significant impact on the earth's ecosystems, has greatly increased in recent years due to expanding trade and transport among different countries. Understanding the ecological principles underlying the invasive process as well as the characteristics of the invasive plants is crucial for making good
In coastal aquifers, saltwater intrusion may cause serious consequences in terms of both environmental and economic impacts. An attempt has been made in the present study to elucidate the quality of groundwaterin the study area in terms of the chemical parameter change due to the seasonal variation of water level. The present study deals with the physio-chemical characteristics of groundwater quality in Nagapattinam district.The study area showed generally similar hydrochemical characteristics slightly higher level of Cl-, Na+, and EC was observed. Based on the Cl- , Na+ and EC data, the groundwater falls within high salinity.
The book brings together research topics having a broad focus on human and climate change impacts on the terrestrial ecosystems in the tropics in general and more specifically from the most significant and vulnerable Himalayan ecosystem. A total of 16 contributions included in the book cover a diverse range of global change themes such as the impacts of changing temperature and precipitation on soil ecosystems, forest degradation, extent and impacts of invasive species, plant responses to pollution, climate change impacts on biodiversity and tree phenology, environmental changes associated with land use, importance of traditional knowledge in climate change adaptation, timberline ecosystems, and role of integrated landscape modeling for sustainable management of natural resources. The book is a collective endeavour of an international multidisciplinary group of scientists focused on improving our understanding of the impacts of global change on the structure and functioning of tropical ecosystems and addressing the challenges of their future sustainable management. We hope that the book will help researchers working in the areas of ecology and environmental science to update their knowledge. We also expect that natural resource managers and policy planners will find explanations for some of their observations and hypotheses on multiple global change factors impacting tropical ecosystems and especially Himalayan ecosystems.
Over the past century, the number of species that have been transported to areas outside their native range has increased steadily. New pests and pathogens place biological pressure on valuable resident species, but strict bans may conflict with trading and travel needs. An overview of how the conflict can be managed using pest risk mapping and modelling, this book uses worked examples to explain modelling and help development of tool kits for assessment.
Results of regular monitoring of the species diversity and structure of plant communities is used by conservation biologists to help understand impacts of perturbations caused by humans and other environmental factors on ecosystems worldwide. Changes in plant communities can, for example, be a reflection of increased levels of pollution, a response to long-term climate change, or the result of shifts in land-use practices by the human population. This book presents a series of essays on the application of plant biodiversity monitoring and assessment to help prevent species extinction, ecosystem collapse, and solve problems in biodiversity conservation. It has been written by a large international team of researchers and uses case studies and examples from all over the world, and from a broad range of terrestrial and aquatic ecosystems. The book is aimed at any graduate students and researchers with a strong interest in plant biodiversity monitoring and assessment, plant community ecology, biodiversity conservation, and the environmental impacts of human activities on ecosystems.
This contributed book is based on the current status of biodiversity in India, issues and challenges faced by the authorities involved in conservation efforts, and the imperative role of various direct and indirect stakeholders in biodiversity conservation. The book discusses the current status of different forms of biodiversity in India, challenges faced by stakeholders, issues and reasons for biodiversity losses, and efforts by government through various laws, policies, and programs in a concise and comprehensive manner throughout its many chapters. In this way, readers can access diverse information on Indian biodiversity through this book. It is compiled by leading experts in the field of conservation. In 18 chapters, it covers biodiversity of both fauna and flora, on land and in aquatic ecosystems, legal and policy aspects, as well as innovative conservation tool and techniques. It is useful for undergraduates and graduate students and also educates policy planners, bureaucrats, foresters, and researchers in India and abroad.
The present book has been designed to bind prime knowledge of climate change-induced impacts on various aspects of our environment and its biological diversity. The book also contains updated information, methods and tools for the monitoring and conservation of impacted biological diversity.
This edited book provides an ensemble of contemporary research related to the challenges, impacts and precautionary measures for tackling plant invasions in the context of changing climate in different regions of the world. In current scenario, plant invasions are expansive and significant component of anthropogenic global climate change. Temperature variations may compromise the adaptability of native species, thereby stressing them and decreasing the resistance potential of natural communities to invasion. Invasive alien species under the current scenario have been suggested as a major threat to biodiversity. It is also predicted that increasing disturbances or extreme events such as fires, floods, cyclones, storms, heat-waves, droughts, etc. will be direct consequences of changing climate supporting the invasive alien species. A comprehensive understanding of the interaction between species invasion and climate change will be supplemental in forecasting future shifts in biodiversity. Further, different predictive models indicate a plausible increase in the abundance and impact of invasive alien species which may have direct implications for future research and target-oriented policy and decision making. However, these predictions become more complicated considering the complexity of interactions between the impacts of changing climate with other components of global change (changes in land use, nitrogen deposition, etc.) which are affecting the distribution of native plant species, ecosystem dynamics as well as non-native/invasive species. This book will be suitable for students (undergraduate and postgraduates) of agriculture, forestry, ecology, soil science, and environmental sciences; teachers, researchers, and climate change scientists in academic and research institutions. It will also be applicable to environmental management agencies, government agencies and policy makers.
