Ecology of Great Horned Owls and Red-tailed Hawks in Southeastern Wisconsin PDF Download
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Author: LeRoy Petersen
Publisher:
ISBN:
Category : Ecology
Languages : en
Pages : 68
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Book Description
Author: LeRoy Petersen
Publisher:
ISBN:
Category : Ecology
Languages : en
Pages : 68
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Book Description
Author: LeRoy Petersen
Publisher:
ISBN:
Category : Birds of prey
Languages : en
Pages : 63
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Book Description
Author: U.S. Fish and Wildlife Service. Division of Ecological Services
Publisher:
ISBN:
Category : Animal ecology
Languages : en
Pages : 184
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Book Description
This manual is provided for guidance and as a reference document for all U.S.F.W.S. Ecological Services personnel to use in carrying out assignments under the Land and Water Resource Development Planning, Biological Services, and Environmental Contaminant Evaluation Programs of the Habitat Perservation Category.
Author: Dwight G. Smith
Publisher: Stackpole Books
ISBN: 9780811726894
Category : Nature
Languages : en
Pages : 116
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Book Description
A complete natural history of the species, in straightforward text and brilliant color photographs.
Author: Vancouver Charles J. Krebs Professor of Zoology University of British Columbia
Publisher: Oxford University Press, USA
ISBN: 9780199771349
Category : Science
Languages : en
Pages : 542
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Book Description
The boreal forest is one of the world's great ecosystems, stretching across North America and Eurasia in an unbroken band and containing about 25% of the world's closed canopy forests. The Kluane Boreal Forest Ecosystem Project was a 10-year study by nine of Canada's leading ecologists to unravel the impact of the snowshoe hare cycle on the plants and the other vertebrate species in the boreal forest. In much of the boreal forest, the snowshoe hare acts as a keystone herbivore, fluctuating in 9-10 year cycles, and dragging along secondary cycles in predators such as lynx and great-horned owls. By manipulating the ecosystem on a large scale from the bottom via fertilizer additions and from the top by predator exclosures, they have traced the plant-herbivore relationships and the predator-prey relationships in this ecosystem to try to answer the question of what drives small mammal population cycles. This study is unique in being large scale and experimental on a relatively simple ecosystem, with the overall goal of defining what determines community structure in the boreal forest. Ecosystem Dynamics of the Boreal Forest: The Kluane Project summarizes these findings, weaving new discoveries of the role of herbivores-turned-predators, compensatory plant growth, and predators-eating-predators with an ecological story rich in details and clear in its findings of a community where predation plays a key role in determining the fate of individuals and populations. The study of the Kluane boreal forest raises key questions about the scale of conservation required for boreal forest communities and the many mammals and birds that live there.
Author:
Publisher:
ISBN:
Category : Forest management
Languages : en
Pages : 756
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Book Description
Author: A. T. Bergerud
Publisher: U of Minnesota Press
ISBN: 0816614695
Category : Adaptation (Biology).
Languages : en
Pages : 836
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Book Description
"Adaptive Strategies and Population Ecology of Northern Grouse" was first published in 1988. Minnesota Archive Editions uses digital technology to make long-unavailable books once again accessible, and are published unaltered from the original University of Minnesota Press editions. This book is at once a major reference to the species of grouse that inhabit North America and the Holarctic and a synthesis of all the available data on their ecology, sociobiology, population dynamics, and management. The book undertakes to answer two long-standing questions in population ecology: what actually regulates the numbers within a population, and what are the breeding and survival strategies evolved in this northern environment? For Volume I, editors Arthur T. Bergerud and Michael W. Gratson have drawn together their own work and that of colleagues in North America, Iceland, and Norway--in all, eleven research studies, averaging six years' duration, on eight species of grouse. These studies deal with the blue and ruffed grouse of the forest habitat; the sharp-tailed grouse, prairie chicken, and sage grouse of the prairie or steppe; and the white-tailed, rick, and willow ptarmigan found in alpine and arctic tundras. The authors describe the rich repertoire of behavior patterns developed by the hen and the cock to achieve their two primary objectives--first, to stay alive, and then to breed. Volume II, primarily the work of Bergerud, synthesizes the evidence in Volume I and in the grouse research literature from a theoretical perspective. Several potentially controversial sociobiological hypotheses are advanced to account for flocking behavior, migration, dispersal, roosting and feeding behavior, mate choice and mating systems. The demographic analysis provides new insights into cycles of abundance, the limitation of numbers, and the demographic factors that determine densities. The contributors, besides Bergerud and Gratson: R.C. Davies, A. Gardarson, J.E. Hartzler, R.A. Huempfner, D.A. Jenni, D.H. Mossop, S. Myrberget, R.E. Page, R.K. Schmidt, W.D. Svedarsky, and J.R. Tester.
Author: James R. Duncan
Publisher:
ISBN:
Category : Birds
Languages : en
Pages : 664
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Book Description
Author: Karl Daniel Strause
Publisher:
ISBN:
Category : Bald eagle
Languages : en
Pages : 572
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Book Description
Author: U.S. Fish and Wildlife Service. Division of Ecological Services
Publisher:
ISBN:
Category : Habitat (Ecology)
Languages : en
Pages : 184
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Book Description
