Your search for keyword(s) "fen" resulted in 2 record(s).

Title: Nonequilibrium dynamics of sedge meadows grazed by cattle in southern Wisconsin: Journal: Plant Ecology; Authors: B. Middleton; Date: 2002; Summary: The effects of cattle grazing and exclusion on the long-term structural characteristics of sedge meadows in the Lodi Wildlife Area, WI (43Ëš 19â€™ N; 89Ëš 37â€™ W) were examined to test the equilibrium theory from 1977-1997. Four sites (reference-very lightly grazed, lightly grazed, moderately to heavily grazed and recovering-no grazing since 1973) were examined. Four environmental factors including recovery time (years since grazing), tussock height, frequency of hoof prints, and water depth at base of tussock (if present) were calculated and measured. ...; Agrovoc Control Words: Riparian zones, Grazing, Wildlife; View more details about this article

Title: Destruction of wetland habitats by lesser snow geese: A keystone species on the west coast of Hudson Bay: Journal: Journal of Applied Ecology; Authors: R. H. Kerbes, P. M. Kotanen, and R. L. Jefferies; Date: 1990; Summary: To estimate lesser snow geese populations and determine the effects of geese herbivory along the Hudson Bay in the Northwest Territories, nesting and population surveys were conducted along with plant species frequency and fecal counts. Aerial photographs were taken in June 1985 to count nesting birds, while population surveys were done from an airplane in 1977, 1980, 1981, and 1985. The geese population survey in 1978 was done with aerial photographs. Plant frequency and nest and fecal counts were conducted on seven non-degraded sites and five degraded sites in 1985. ...; Agrovoc Control Words: Riparian zones, Rangelands, Wildlife; View more details about this article