Grazing and Haying Effects on Habitats of Upland Nesting Birds
Author : Leo M. Kirsch
Publisher :
Page : 12 pages
File Size : 42,54 MB
Release : 1986
Category : Birds
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Author : Leo M. Kirsch
Publisher :
Page : 12 pages
File Size : 42,54 MB
Release : 1986
Category : Birds
ISBN :
Author :
Publisher :
Page : 122 pages
File Size : 34,86 MB
Release : 1984
Category : Environmental impact statements
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Author :
Publisher :
Page : 1062 pages
File Size : 23,53 MB
Release : 1979
Category : Wild life, Conservation of
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Author : Northern Prairie Science Center (U.S.)
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Page : 38 pages
File Size : 33,34 MB
Release : 1994
Category : Prairies
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Author :
Publisher :
Page : 36 pages
File Size : 33,61 MB
Release : 1994
Category :
ISBN :
Author :
Publisher :
Page : 414 pages
File Size : 40,75 MB
Release : 1992
Category : Bird populations
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Author : U.S. Fish and Wildlife Service
Publisher :
Page : 28 pages
File Size : 50,68 MB
Release : 1981
Category : Fishes
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Author :
Publisher :
Page : 568 pages
File Size : 35,4 MB
Release : 2002
Category :
ISBN :
Author : Kenneth F. Higgins
Publisher :
Page : 32 pages
File Size : 13,60 MB
Release : 1982
Category : Grasses
ISBN :
A sample of 365 stands of seeded nesting cover (mixtures of cool-season grasses and legumes) was studied in the glaciated prairie pothole region during 1977-79. Measurements of species composition, canopy cover, plant height, and visual obstruction values differed with stand age but only in a general way when results from over the entire region were pooled. Maximum values for plant height and visual obstruction occurred once per stand during the first 10 growing seasons. Although the year of maximum growth was variable and unpredictable, stands showed trends of degeneration in height and visual obstruction after the year of maximum growth.
Author :
Publisher :
Page : 704 pages
File Size : 25,60 MB
Release : 2001
Category : Forest management
ISBN :