Status Reports on Twelve Raptors PDF Download
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Author: David Lawrence Evans
Publisher:
ISBN:
Category : Birds of prey
Languages : en
Pages : 76
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Book Description
Depletion of fisheries due to acid rain may pose a future threat to bald eagle and osprey populations in some regions. Loss of essential habitat has affected declines in the caracara and western burrowing owl and the disappearance of the norther aplomado falcon from the southern United States. Most populations of the ferruginous hawk, marsh hawk, and prairie falcon appear stable; habitat loss is the most critical factor in population changes.
Author: David Lawrence Evans
Publisher:
ISBN:
Category : Birds of prey
Languages : en
Pages : 76
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Book Description
Depletion of fisheries due to acid rain may pose a future threat to bald eagle and osprey populations in some regions. Loss of essential habitat has affected declines in the caracara and western burrowing owl and the disappearance of the norther aplomado falcon from the southern United States. Most populations of the ferruginous hawk, marsh hawk, and prairie falcon appear stable; habitat loss is the most critical factor in population changes.
Author: International Biological Programme
Publisher:
ISBN:
Category : Biotic communities
Languages : en
Pages : 298
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Book Description
Author: U.S. Fish and Wildlife Service
Publisher:
ISBN:
Category : Fishes
Languages : en
Pages : 76
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Book Description
Author:
Publisher:
ISBN:
Category : Fishery management
Languages : en
Pages : 136
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Book Description
Author:
Publisher:
ISBN:
Category : Fishes
Languages : en
Pages : 136
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Book Description
Author: Emma Ford
Publisher: DIANE Publishing
ISBN: 1428993010
Category : Falconry
Languages : en
Pages : 119
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Book Description
Author: W. K. Lauenroth
Publisher: Oxford University Press
ISBN: 0199722803
Category : Science
Languages : en
Pages : 537
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Book Description
Ecology of the Shortgrass Steppe: A Long-Term Perspective summarizes and synthesizes more than sixty years of research that has been conducted throughout the shortgrass region in North America. The shortgrass steppe was an important focus of the International Biological Program's Grassland Biome project, which ran from the late 1960s until the mid-1970s. The work conducted by the Grassland Biome project was preceded by almost forty years of research by U.S. Department of Agriculture researchers-primarily from the Agricultural Research Service-and was followed by the Shortgrass Steppe Long-Term Ecological Research project. This volume is an enormously rich source of data and insight into the structure and function of a semiarid grassland.
Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 88
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Book Description
Author:
Publisher:
ISBN:
Category : Range management
Languages : en
Pages : 112
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Book Description
Author: Paul A. Johnsgard
Publisher:
ISBN:
Category : Nature
Languages : en
Pages : 360
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Book Description
"Johnsgard provides an overview of the history, current status, and uncertain future of prairie birds, from falcons and shorebirds to larks and sparrows. Some are intercontinental migrants that winter in South America, others sedentary species or short-distance travelers that may frequent the grasslands of Mexico. Johnsgard describes each species - its features, habits, habitats, migratory patterns, and breeding season ecology.".
