Author:
Publisher:
ISBN:
Category : Bee culture
Languages : en
Pages : 320

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Book Description

Author: Food and Agriculture Organization of the United Nations
Publisher: Food & Agriculture Org.
ISBN: 9789251036594
Category : Gardening
Languages : en
Pages : 216

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Book Description
This bulletin, based on contributions from various contributors and edited by Dr. D.W. Roubik, introduces the reader to various aspects of natural and insect pollination. It discusses the pollinators themselves, and the ecological and economic importance of pollination, as well as applied pollination in temperate, tropical oceanic islands and mainland tropics, and alternatives to artificial pollinator populations. Prospects for the future are also discussed. Chapter 2 deals with successful pollination with pollinator populations, the evaluation of pollinators and floral biology and research techniques. The behaviour of pollinators and plant phenology and various case studies on the preparation of pollinators for use in tropical agriculture are also discussed. A glossary and various appendices regarding cultivated and semi-cultivated plants in the tropics, pollination contracts and levels of safety of pesticides for bees and other pollinators are included.

Author: T.N. Ananthakrishnan
Publisher: Scientific Publishers
ISBN: 9387741567
Category : Science
Languages : en
Pages : 142

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Book Description
This book aims at an understanding of diverse mutualistic interactions, with all individuals tending to display their own adaptational ranges. In view of different species using different kinds of microhabitats, the diversity of assemblages goes a long way towards a better appreciation of the adaptive trends of the species involved therein. Insect assemblages and communities are shaped by the compositional, structural and trophic interactions which hold together ecological communities.

Author: Norman J. Scott
Publisher:
ISBN:
Category : Amphibians
Languages : en
Pages : 254

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Book Description

Author: Michael J.S. Tevesz
Publisher: Springer
ISBN: 1475707401
Category : Science
Languages : en
Pages : 846

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Book Description

Author: Manuel Oliveira
Publisher: BoD – Books on Demand
ISBN: 1789853370
Category : Nature
Languages : en
Pages : 222

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Book Description
This book presents different perspectives on how to understand the complex interaction between plants and the environment. Plant communities adapt to biotic and abiotic stresses with different mechanisms and understanding these phenomena provides the means to better manage our environment and to cultivate crops that better serve our needs.

Author: T.N. Ananthakrishnan
Publisher: Scientific Publishers
ISBN: 9387869717
Category : Science
Languages : en
Pages : 238

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Book Description
Rapid depletion and degradation of species in diverse ecosystems and the implications of this for human welfare have the cause for increasing concern. Biodiversity or variability among living organisms and the ecological complexes of which they are a part, is essential for ensuring the basic ecological services and resources necessary for sustaining human welfare. The loss of biodiversity is therefore, considered one of the most serious problem threatening the world today. An understanding of the ecological implications of the increasing loss of bodiversity, not to mention of the economic implications, has therefore, became vital. A biodiversity loss is irreversible. A calls for increased caution in our efforts to convert and exploit natural resources. Some minimal level of biodiversity is necessary to main ecological functioning, which in turn is necessary for generating the biological resources on which human welfare depends. Needless to emphasive that substantial biodiversity loss occurs due to forest clearing and degradation, leading to the need for assessing biodiversity in different ecosystems. Keeping these aspects in mind, the present volume highlights biodiversity in different cropping systems besides that the impact of cold and hot deserts. Selection of the topics in the various chapters is essentially because of the experience of the authors in the field of biodiversity.

Author:
Publisher:
ISBN:
Category : Wildlife conservation
Languages : en
Pages : 398

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Book Description

Author: Gary G. Mittelbach
Publisher: Oxford University Press
ISBN: 0192572865
Category : Science
Languages : en
Pages : 448

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Book Description
Community ecology has undergone a transformation in recent years, from a discipline largely focused on processes occurring within a local area to a discipline encompassing a much richer domain of study, including the linkages between communities separated in space (metacommunity dynamics), niche and neutral theory, the interplay between ecology and evolution (eco-evolutionary dynamics), and the influence of historical and regional processes in shaping patterns of biodiversity. To fully understand these new developments, however, students continue to need a strong foundation in the study of species interactions and how these interactions are assembled into food webs and other ecological networks. This new edition fulfils the book's original aims, both as a much-needed up-to-date and accessible introduction to modern community ecology, and in identifying the important questions that are yet to be answered. This research-driven textbook introduces state-of-the-art community ecology to a new generation of students, adopting reasoned and balanced perspectives on as-yet-unresolved issues. Community Ecology is suitable for advanced undergraduates, graduate students, and researchers seeking a broad, up-to-date coverage of ecological concepts at the community level.

Author: Melvin N.a. Peterson
Publisher: CSIS
ISBN: 9780892062065
Category : Juvenile Nonfiction
Languages : en
Pages : 132

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Book Description
The evaluations in this volume reflect a consensus among scientists of several nations regarding the state of scientific knowlege about oceanic life relative both to existing demands and expectations, and to those yet to come.