Effet du confinement du betail et des travaux d'ensemencement sur la nidification de la sauvagine aux Iles de Varennes, Quebec / Stephane Lapointe.
Material type:
TextPublication details: Montreal, QC : Universite du Quebec a Montreal, 1995.Description: iv, 42 leaves : ill. ; 28 cmOnline resources: Abstract: Expansion of farming and changes in agricultural practices are important factors responsible for the decline of duck poulations throughout North America (Higgins 1977, Sugden and Beyersbergen 1984). Ducks now have to nest in the reamining small and fragmented habitats where predation is high (Clark et Nudds 1991, Greenwood et al. 1995, Pasitschniak-Arts and Messier 1995). Even though dabbling duck populations have less declined in eastern North America than in western regions of the continent,biologists are concerned with the rate at which wetlands are being converted into farmlands and industrial lands (Anon. 1985).
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Thesis(M.B.)--Universite du Quebec a Montreal, 1995.
Includes bibliographical references (leaves 36-42).
Expansion of farming and changes in agricultural practices are important factors responsible for the decline of duck poulations throughout North America (Higgins 1977, Sugden and Beyersbergen 1984). Ducks now have to nest in the reamining small and fragmented habitats where predation is high (Clark et Nudds 1991, Greenwood et al. 1995, Pasitschniak-Arts and Messier 1995). Even though dabbling duck populations have less declined in eastern North America than in western regions of the continent,biologists are concerned with the rate at which wetlands are being converted into farmlands and industrial lands (Anon. 1985).