Passerine abundance and productivity indices in grasslands managed for waterfowl nesting cover in Saskatchewan, Canada / Mitschka John Hartley
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TextPublication details: Baton Rouge, LA : Louisiana State University, 1994.Description: iv, 41 leaves : ill. ; 29 cmOnline resources: Abstract: A primary objective of the North American Waterfowl Management Plan is to establish dense nesting cover (DNC) in the prairie pothole region. I evaluated impacts of DNC on nongame birds by comparing passerine abundance at 16 DNC sites, 18 native grasslands, and 19 cultivated wheat fields in east-central Saskatchewan during 1993. I recorded abundance of singing males during three visits to two 100m-radius survey plots at each site. Territorial males of 14, 15, and six species were counted in DNC, native grasslands,and wheat fields, respectively. Species richness averaged 4.6, 5.3, and 1.7 species per site in the respective habitats.Average numbers of individuals counted per plot were 4.4, 3.8, and 0.7 in DNC, native grasslands, and wheat fields, respectively. Numbers of individuals and species richness did not differ significantly between DNC and native grasslands, but both habitats had significantly higher species richness and numbers of individuals than did wheat fields.Behavioral p
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Thesis(M.Sc)--Louisiana State University, 1994.
Includes bibliographical references (leaves 21-23).
A primary objective of the North American Waterfowl Management Plan is to establish dense nesting cover (DNC) in the prairie pothole region. I evaluated impacts of DNC on nongame birds by comparing passerine abundance at 16 DNC sites, 18 native grasslands, and 19 cultivated wheat fields in east-central Saskatchewan during 1993. I recorded abundance of singing males during three visits to two 100m-radius survey plots at each site. Territorial males of 14, 15, and six species were counted in DNC, native grasslands,and wheat fields, respectively. Species richness averaged 4.6, 5.3, and 1.7 species per site in the respective habitats.Average numbers of individuals counted per plot were 4.4, 3.8, and 0.7 in DNC, native grasslands, and wheat fields, respectively. Numbers of individuals and species richness did not differ significantly between DNC and native grasslands, but both habitats had significantly higher species richness and numbers of individuals than did wheat fields.Behavioral p