Habitat Use and Productivity of Canvasbacks in Southwestern Manitoba, 1961-72

Habitat Use and Productivity of Canvasbacks in Southwestern Manitoba, 1961-72 PDF Author: Jerome H. Stoudt
Publisher:
ISBN:
Category : Bird populations
Languages : en
Pages : 40

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Book Description
A study of canvasback (Aythya valisineria) breeding populations, nest success, productivity, and habitat requirements was conducted from 1961 to 1972 on a 181.3 square kilometer area south of Minnedosa, Manitoba.

Habitat Use and Productivity of Canvasbacks in Southwestern Manitoba, 1961-72

Habitat Use and Productivity of Canvasbacks in Southwestern Manitoba, 1961-72 PDF Author: Jerome H. Stoudt
Publisher:
ISBN:
Category : Bird populations
Languages : en
Pages : 40

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Book Description
A study of canvasback (Aythya valisineria) breeding populations, nest success, productivity, and habitat requirements was conducted from 1961 to 1972 on a 181.3 square kilometer area south of Minnedosa, Manitoba.

Monthly Catalog of United States Government Publications

Monthly Catalog of United States Government Publications PDF Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages :

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Monthly Catalogue, United States Public Documents

Monthly Catalogue, United States Public Documents PDF Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1050

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The Ecology and Management of Breeding Waterfowl

The Ecology and Management of Breeding Waterfowl PDF Author:
Publisher: U of Minnesota Press
ISBN: 9781452900162
Category : Electronic books
Languages : en
Pages : 812

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Special Scientific Report--wildlife

Special Scientific Report--wildlife PDF Author:
Publisher:
ISBN:
Category : Fishes
Languages : en
Pages : 558

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Habitat Requirements for Chesapeake Bay Living Resources

Habitat Requirements for Chesapeake Bay Living Resources PDF Author:
Publisher:
ISBN:
Category : Habitat (Ecology)
Languages : en
Pages : 506

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Our Living Resources

Our Living Resources PDF Author:
Publisher:
ISBN:
Category : Animal populations
Languages : en
Pages : 548

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Book Description
Report provides information on distribution, abundance, and health of birds, mammals, reptiles and amphibians, fishes, invertebrates, plants, terrestrial ecosystems, aquatic ecosystems, coastal and marine ecosystems, riparian ecosystems, the Great Plains, Interior West, Alaska, and Hawaii. It also discusses special issues: global climate change, human influences, non-native species, and habitat assessments.

The North American Whistling-Ducks, Pochards, and Stifftails

The North American Whistling-Ducks, Pochards, and Stifftails PDF Author: Paul Johnsgard
Publisher: Lulu.com
ISBN: 1609621107
Category : Nature
Languages : en
Pages : 186

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Book Description
Although the 12 species representing three waterfowl tribes described in this volume are not closely related, they fortuitously provide an instructive example of adaptive evolutionary radiation within the much larger waterfowl lineage (the family Anatidae), especially as to their divergent morphologies, life histories, and social behaviors. The whistling-ducks (Dendrocygna), with three known North American species, are notable for their permanent pair-bonds, extended biparental family care, and strong social cohesion. In contrast, males of the five typical pochards of North American diving ducks (Aythya) establish monogamous pair-bonds that are maintained only long enough to assure that the female's eggs are fertilized. The endpoint of this behavioral gradient, promiscuity or polygyny, exists among at least some of the typical stifftails (Oxyura). Such diverse reproductive strategies have exerted powerful evolutionary influences on interspecies variations in sexual dimorphism, sexual behavior, anatomy, ecology, and other traits. This volume includes more than 63,000 words, plus some 200 maps, photos, drawings, and sketches, and nearly 650 literature citations. It is the last of five volumes that describe all 55 waterfowl species that have been historically documented in North America; collectively, the volumes total over 300,000 words, with nearly 3,000 literature citations, and more than 600 maps, photos, drawings, and sketches.

Response of Lake Trout and Rainbow Trout to Dietary Cellulose

Response of Lake Trout and Rainbow Trout to Dietary Cellulose PDF Author: Hugh A Poston
Publisher:
ISBN:
Category : Cellulose
Languages : en
Pages : 268

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Effects of Vegetation Manipulation on Breeding Waterfowl in Prairie Wetlands

Effects of Vegetation Manipulation on Breeding Waterfowl in Prairie Wetlands PDF Author: Harold A. Kantrud
Publisher:
ISBN:
Category : Waterfowl management
Languages : en
Pages : 24

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