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Author: James R. Goldsberry Publisher: ISBN: Category : Bird populations Languages : en Pages : 344
Book Description
This report contains information obtained from the 1974-75 midwinter waterfowl survey, the 1975 waterfowl breeding population and production surveys, and the waterfowl harvest surveys for the 1974-75 hunting season.
Author: James R. Goldsberry Publisher: ISBN: Category : Bird populations Languages : en Pages : 344
Book Description
This report contains information obtained from the 1974-75 midwinter waterfowl survey, the 1975 waterfowl breeding population and production surveys, and the waterfowl harvest surveys for the 1974-75 hunting season.
Author: William W. Larned Publisher: ISBN: Category : Bird populations Languages : en Pages : 88
Book Description
This report contains information obtained from the 1975-76 midwinter waterfowl survey, the 1976 waterfowl breeding population and production surveys, and the waterfowl harvest surveys for the 1975-76 hunting season.
Author: Carney S. Smith Publisher: ISBN: Category : Bird populations Languages : en Pages : 88
Book Description
This report contains information obtained from the 1976-77 midwinter waterfowl survey, the 1977 waterfowl breeding population and production surveys, and the waterfowl harvest surveys for the 1976-77 hunting season.
Author: Henry L. Short Publisher: ISBN: Category : Biotic communities Languages : en Pages : 40
Book Description
This paper describes a technique for ordering wildlife information according to physical strata and vegetative structure so that a variety of statistical analyses can be accomplished. Individual wildlife species are assigned to cells in a species-habitat matrix on the basis of feeding and breeding activities within physical strata in representative types of vegetative cover: the cells within the species-habitat matrix are assigned numeric values. The statistical analyses are thus based on the areas that individual species occupy within the species-habitat matrix. Computer graphics are used to represent the structure of wildlife communities and cluster analysis routines are used to describe the potential wildlife guilds that may exist in different vegetative communities. Different numbers of wildlife guilds will occur in species and presumably also of wildlife guilds present within a type of cover is modified by physical attributes of the vegetation within that cover type. The products of this analytical technique may be suitable for evaluating habitat quality, impact assessments, regional inventories and assessments of wildlife resources, and land-use planning activities.
Author: Publisher: ISBN: Category : Birds Languages : en Pages : 48
Book Description
One egg from each of 440 clutches of eggs of 19 species of Alaskan seabirds collected in 1973-76 was analyzed for organochlorine residues. Both frequency of occurrence and concentration of residues in the eggs differed geographically and by species, apparently reflecting non-uniform distribution of organochlorines in the environment, dissimilar feeding habits and migration patterns of the species, or metabolic differences among the species.
Author: James R. Goldsberry
Author: James R. Goldsberry
Author: U.S. Fish and Wildlife Service
Author: William W. Larned
Author: James R. Goldsberry
Author: 
Author: Carney S. Smith
Author: 
Author: Henry L. Short
Author: 
Author: Saskatchewan Waterfowl Technical Committee