Grazing And Haying Effects On Habitats Of Upland Nesting Birds
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North Dakota Grazing Environmental Impact Statement
Author | : |
Publisher | : |
Total Pages | : 122 |
Release | : 1984 |
Genre | : Environmental impact statements |
ISBN | : |
Publications Available from Northern Prairie Science Center
Author | : Northern Prairie Science Center (U.S.) |
Publisher | : |
Total Pages | : 38 |
Release | : 1994 |
Genre | : Prairies |
ISBN | : |
Special Scientific Report--wildlife
Author | : U.S. Fish and Wildlife Service |
Publisher | : |
Total Pages | : 28 |
Release | : 1981 |
Genre | : Fishes |
ISBN | : |
Changes in Vegetation Structure in Seeded Nesting Cover in the Prairie Pothole Region
Author | : Kenneth F. Higgins |
Publisher | : |
Total Pages | : 32 |
Release | : 1982 |
Genre | : 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.