Ecology and management of aquatic vegetation in the Indian subcontinent

Ecology and management of aquatic vegetation in the Indian subcontinent PDF

Author: B. Gopal

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 260

ISBN-13: 9400919840

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Life originated and evolved in water. Later the The tropical countries where the need to under plants moved out of water, conquered the land and stand the natural ecosystems is far greater because became dominant over it. The evolution through they are under intensive pressure from develop the millennia resulted in enormous complexity of ment from a rapidly growing human population, form, tissue organisation, reproductive mechan have generally devoted much less attention to the isms and specialisation of taxa in different niches. studies of aquatic ecosystems. The Indian subconti At some stage during evolution, some plants devel nent is a well-recognised biogeographic region with oped appropriate morphological and physiological a distinct geological history, climate, soils and adaptations and reverted back to the aquatic and/ biota. It is also distinct in the history of human civilisation and cultures which have a profound bear or semi-aquatic habitat. These plants, perhaps with the exception of a few ing on the natural ecosystems. This book is in with beautiful flowers, have attracted little atten tended to provide the state of our knowledge of the tion from mankind. The fact that humans evolved aquatic and semi-aquatic vegetation in the inland in a tropical forest or savanna environment appears freshwaters of the subcontinent. The book covers responsible for a permanent bias in human atti only the herbaceous vegetation, since there is al tudes towards land and its biota.

Aquatic and Semi-aquatic Plants of the Lower Ganga Delta

Aquatic and Semi-aquatic Plants of the Lower Ganga Delta PDF

Author: Kumudranjan Naskar

Publisher: Daya Books

Published: 1990

Total Pages: 444

ISBN-13: 9788170350811

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In the book the author discussed in brief the angiosperm flora of the fresh-water environment from the lower Ganga Delta regions of West Bengal. These individual flora should be familiar in terms of their correct nomenclature, identity, key notes, ecological setup, phenology, physiognomy and economic importance as well. It is also pointed out how far these plants are weedy and how these can be controlled and/ or utilized. There is a common belief that in the Universe each and every individual is correlated; without one the other cannot be successfully complete their life-cycle. So, for our own benefit and to avoid the pollution or to keep the nature in balance like others, these aquatic ecosystem should be conserved and scientific means and methods should be applied. Taking this view in mind, the flowering plants of the freshwater ecosystems (327 numbers) are discussed in relation to its taxonomy, Ecology and Economic Importance or potentialities. All these plant species were collected from the field by the author himself and studies the above subject at the field, the herbarium and laboratories. The experimental trials have also been made in the laboratories and in the agriculture and aquaculture ponds as well. Contents Chapter 1: Biology of the Aquatic Plants; Chapter 2: Ecosystems; Ecosystem components (aquatic-ecosystems), Biotic components of the aquatic ecosystem, Abiotic components of the aquatic ecosystem, Ecological pyramids in the aquatic environments, Productivity concept, Some of the climatic factors in the aquatic ecosystems, Light, Temperature, Water, Carbon dioxide, Nitrogen, Wind velocity, Soil, pH; Chapter 3: Climate of the Lower Ganga Delta in West Bengal; Chapter 4: Manipulation of Some Biotic Factors in Aquatic Ecosystems; Chapter 5: Classification of the Marshy/ Aquatic Plants; Chapter 6: Classification of the Marshy/ Aquatic Plants; Free-floating hydrophytes, Rooted hydrophytes with floating leaves, Rooted submerged hydrophytes, Rooted emergent hydrophytes or helophytes or amphibious plants, Wet land hydrophytes or semi-aquatic plants; Chapter 7: Different types of the aquatic and marshy environment of this delta; Chapter 8: Different Types of Macro-vegetation Zones in the Marshy Areas of the Lower Ganga Delta; Chapter 9: Problems Caused by the Aquatic Weeds in the Lower Ganga Delta; Chapter 10: Some Common Aquatic Weeds and their Extent of Infestation; Chapter 11: Transmission or Migration of the Aquatic Weeds; Chapter 12: Methods of Controlling Aquatic Weeds; Manual and mechanical control or physical methods-merits of physical methods-demerits of physical methods, Chemical control or herbicidal methods, Fertilization methods of control, Control through utilization; Chapter 13: Importance of the Ecological Life-cycle Studies for Aquatic Plants; Chapter 14: Economic Used or Utilization of the Aquatic Plants; Chapter 15: Discussion Regarding the Aquatic Flora of Lower Bengal; Chapter 16: List of the Common Aquatic, Semi-aquatic, Marshy and Moist loving Plants from the Lower Ganga Delta in West Bengal; Chapter 17: Keys to the Families and Brief Diagnostic Characters of the Freshwater loving Plants; Chapter 18: Taxonomic Enumerations; Chapter 19: Bibliography of the Freshwater Plants; Chapter 20: Index to the Scientific Names, Families Names and Generic Names.

Ecosystems and Integrated Water Resources Management in South Asia

Ecosystems and Integrated Water Resources Management in South Asia PDF

Author: E. R. N. Gunawardena

Publisher: Taylor & Francis

Published: 2020-11-29

Total Pages: 269

ISBN-13: 1000365662

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This book provides an ecosystem perspective in addressing the water resource management issues in the South Asian region. It argues that aspects such as sources of water, its distribution and users; land–water interrelations; drivers of change such as laws, policies and institutions; management of issues and technologies related to water supply; institutional set-up; economic instruments such as pricing, taxes, subsidies; and economics of ecosystem services are crucial. Climate changes, melting of glaciers and polar ice caps, rising sea level and the increased frequency of extreme events, have to be factored into integrated management of water resources. This book addresses some of these major issues related to aquatic ecosystems and focuses on three major aspects: (a) concepts related to ecosystems, ecosystem services and their linkages with water; (b) human impacts on ecosystems, particularly the aquatic ecosystems, and their assessment; and (c) the management, including policy, governance and economics. Comprising new theories, research and case studies, the book will be useful those concerned with water resource management – professionals, students and researchers.

Invasive Alien Plants

Invasive Alien Plants PDF

Author: J. R. Bhatt

Publisher: CABI

Published: 2012

Total Pages: 324

ISBN-13: 1845939077

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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.