Population Biology and Control of the Pine Beauty Moth PDF Download
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Author: S. R. Leather
Publisher:
ISBN: 9780117102057
Category : Lodgepole pine
Languages : en
Pages : 90
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Book Description
Author: S. R. Leather
Publisher:
ISBN: 9780117102057
Category : Lodgepole pine
Languages : en
Pages : 90
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Book Description
Author: Simon R. Leather
Publisher:
ISBN: 9780117102057
Category : Forest protection
Languages : en
Pages : 96
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Book Description
Author: Alan A. Berryman
Publisher: Springer Science & Business Media
ISBN: 1489907890
Category : Science
Languages : en
Pages : 608
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Book Description
Insects multiply. Destruction reigns. There is dismay, followed by outcry, and demands to Authority. Authority remembers its experts or appoints some: they ought to know. The experts advise a Cure. The Cure can be almost anything: holy water from Mecca, a Government Commis sion, a culture of bacteria, poison, prayers denunciatory or tactful, a new god, a trap, a Pied Piper. The Cures have only one thing in common: with a little patience they always work. They have never been known entirely to fail. Likewise they have never been known to prevent the next outbreak. For the cycle of abundance and scarcity has a rhythm of its own, and the Cures are applied just when the plague of insects is going to abate through its own loss of momentum. -Abridged, with insects in place of voles, from C. Elton, 1924, Voles, Mice and Lemmings, with permission of Oxford University Press This book is an enquiry into the "natural rhythms" of insect abundance in forested ecosystems and into the forces that give rise to these rhythms. Forests form unique environ ments for such studies because one can find them growing under relatively natural (pri meval) conditions as well as under the domination of human actions. Also, the slow growth and turnover rates of forested ecosystems enable us to investigate insect popula tion dynamics in a plant environment that remains relatively constant or changes only slowly, this in contrast to agricultural systems, where change is often drastic and frequent.
Author: S. R. Leather
Publisher:
ISBN:
Category :
Languages : en
Pages : 90
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Book Description
Author: Jack P. Dempster
Publisher: Springer Science & Business Media
ISBN: 9401149143
Category : Science
Languages : en
Pages : 494
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Book Description
Insects are by far the largest group of animals on Earth, with over a million described species, and they occupy a wide range of ecological niches - they may be herbivores, predators, parasites or decomposers. Some are of particular economic importance as pests of agriculture and forestry, as vectors of animal and human disease, or as species of interest to wildlife conservation. Thus an understanding of the processes determining their numbers is of considerable practical value. Entomologists have played a leading role in developing a theoretical basis to Population Ecology, but we still do not have adequate experimental and observational proof for many of the theoretical ideas that have been proposed. As a result, the subject has been beset with arguments for more than 50 years. This volume attempts to reconcile some of these controversies, while also reviewing the current state of our knowledge. The editors have drawn together an international list of contributors whose views reflect a range of opinions on how natural populations are stabilised. They have succeeded in producing a book that both covers the main alternative views in population theory and contains some of the best recent field studies of insect populations. This Royal Entomological Society Symposium volume will be of great interest to all entomologists and ecologists, particularly those who wish to know more about Population Dynamics.
Author:
Publisher:
ISBN:
Category : Forest insects
Languages : en
Pages : 416
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Book Description
Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 340
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Book Description
Author: J.R. Packham
Publisher: Springer Science & Business Media
ISBN: 9780412439506
Category : Nature
Languages : en
Pages : 426
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Book Description
Functional Ecology of Woodlands is firmly based on the factors which govern the composition of woodland communities, but goes on to explore the dynamics of interactions between various ecosystem components. This is an authoritative text on the functioning of forest ecosystems, which will also assist readers to reach informed decisions about issues such as the greenhouse effect, acid precipitation, the greening of cities and agroforestry.
Author: Julian Evans
Publisher: John Wiley & Sons
ISBN: 0470756837
Category : Technology & Engineering
Languages : en
Pages : 816
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Book Description
The future of the world's forests is at the forefront of environmental debate. Rising concerns over the effects of deforestation and climate change are highlighting the need both to conserve and manage existing forests and woodland through sustainable forestry practices. The Forests Handbook, written by an international team of both scientists and practitioners, presents an integrated approach to forests and forestry, applying our present understanding of forest science to management practices, as a basis for achieving sustainability. Volume One presents an overview of the world's forests; their locations and what they are like, the science of how they operate as complex ecosystems and how they interact with their environment. Volume Two applies this science to reality; it focuses on forestry interventions and their impact, the principles governing how to protect forests and on how we can better harness the enormous benefits forests offer. Case studies are drawn from several different countries and are used to illustrate the key points. Development specialists, forest managers and those involved with land and land-use will find this handbook a valuable and comprehensive overview of forest science and forestry practice. Researchers and students of forestry, biology, ecology and geography will find it equally accessible and useful.
Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 540
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Book Description
