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Author : Richard S. Pospahala,David Raymond Anderson,Charles J. Henny
Publisher : Unknown
Page : 84 pages
File Size : 50,8 Mb
Release : 1974
Category : Birds
ISBN : UCR:31210024953679
Author : David Raymond Anderson
Publisher : Unknown
Page : 178 pages
File Size : 48,6 Mb
Release : 1972
Category : Bird populations
ISBN : UCR:31210024953661
Simple experiments and observations reveal the physical properties of light.
Author : Anonim
Publisher : Unknown
Page : 76 pages
File Size : 46,8 Mb
Release : 1976
Category : Bird populations
ISBN : UCR:31210024953703
Simple experiments and observations reveal the physical properties of light.
Author : United States Department of the Interior. U.S. Fish and Wildlife Service. Bureau of Sport Fisheries and Wildlife, author
Publisher : Unknown
Page : 84 pages
File Size : 53,9 Mb
Release : 1975
Category : Bird populations
ISBN : UOM:39015095241744
Author : David Raymond Anderson
Publisher : Unknown
Page : 156 pages
File Size : 41,9 Mb
Release : 1972
Category : Bird populations
ISBN : SRLF:AA0003032257
Simple experiments and observations reveal the physical properties of light.
Author : Richard S. Pospahala
Publisher : Forgotten Books
Page : 86 pages
File Size : 46,6 Mb
Release : 2018-03-31
Category : Business & Economics
ISBN : 036571366X
Excerpt from Population Ecology of the Mallard, Vol. 2: Breeding Habitat Conditions, Size of the Breeding Populations, and Production Indices Climatic conditions have a considerable effect on the quality and quantity of waterfowl breed ing habitat which in turn influence waterfowl production and the distribution of birds on the breeding grounds. The effects of man's activities on waterfowl habitat, primarily through drain age, are also reviewed. The numbers of ponds are discussed in terms of climatic factors such as precipitation and temperature. Furthermore, annual numbers of May and July ponds in the prairie-parkland Area (southern portions of Alberta, Saskatchewan, and Manitoba) are dis cussed with respect to climatic conditions. Pi nally, relationships between breeding population density and indices to production are examined. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author : Anonim
Publisher : Unknown
Page : 142 pages
File Size : 42,6 Mb
Release : 1982
Category : Bird populations
ISBN : STANFORD:36105113703297
Author : Anonim
Publisher : Unknown
Page : 0 pages
File Size : 54,9 Mb
Release : 1972
Category : Bird populations
ISBN : LCCN:72603502
Author : David Raymond Anderson
Publisher : Unknown
Page : 128 pages
File Size : 48,6 Mb
Release : 1972
Category : Bird populations
ISBN : LCCN:72603502
Author : Anonim
Publisher : Unknown
Page : 628 pages
File Size : 50,7 Mb
Release : 1972
Category : Bird populations
ISBN : STANFORD:36105113703255
Author : United States Department of the Interior. U.S. Fish and Wildlife Service. Bureau of Sport Fisheries and Wildlife, author
Publisher : Unknown
Page : 56 pages
File Size : 40,7 Mb
Release : 1975
Category : Bird populations
ISBN : UOM:39015095241603
Author : Anonim
Publisher : Unknown
Page : 128 pages
File Size : 49,7 Mb
Release : 1972
Category : Bird populations
ISBN : LCCN:72603502
Author : Anonim
Publisher : Unknown
Page : 56 pages
File Size : 47,5 Mb
Release : 1974
Category : Mallard
ISBN : UCR:31210024953687
Author : Anonim
Publisher : Unknown
Page : 292 pages
File Size : 49,9 Mb
Release : 1987
Category : Wildlife conservation
ISBN : OSU:32435029589736
Author : Anonim
Publisher : Unknown
Page : 88 pages
File Size : 46,5 Mb
Release : 1974
Category : Fishing
ISBN : OSU:32435021600531