The role of interspecific competition in the decline of the black duck / Mark Joesph Petrie
Material type:
TextPublication details: Columbia, MO : University of Missouri-Columbia, 1998.Description: ii, 247 leaves : col. ill. ; 29 cmSubject(s): Online resources: Dissertation note: Thesis (Ph.D.) -- University of Missouri-Columbia. Abstract: Few species in wildlife management have generated as much debate as the American black duck (Anas rubripes; Nudds et al. 1996). Mid-winter inventories (MWI) of black ducks were began in 1955, and indicate a 60%decline in population size over the past 4 decades (Serie 1998).Although efforts to address this decline were organized as early as 1968 (Barske 1968), interest in the black duck increased greatly in the 1980's following a lawsuit against the U.S. Fish and Wildlife Service by the Humane Society. The Humane Society contended that the Fish and Wildlife Service was mismanaging the black duck by allowing harvest to continue in the face of significant declines (Rusch et al. 1989). Prior to this lawsuit, the black duck had been an important species in the overall harvest of waterfowl within the Atlantic Flyway (Bellrose 1980).
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Thesis (Ph.D.) -- University of Missouri-Columbia.
Includes bibliographical references (Leaves 242-247).
Few species in wildlife management have generated as much debate as the American black duck (Anas rubripes; Nudds et al. 1996). Mid-winter inventories (MWI) of black ducks were began in 1955, and indicate a 60%decline in population size over the past 4 decades (Serie 1998).Although efforts to address this decline were organized as early as 1968 (Barske 1968), interest in the black duck increased greatly in the 1980's following a lawsuit against the U.S. Fish and Wildlife Service by the Humane Society. The Humane Society contended that the Fish and Wildlife Service was mismanaging the black duck by allowing harvest to continue in the face of significant declines (Rusch et al. 1989). Prior to this lawsuit, the black duck had been an important species in the overall harvest of waterfowl within the Atlantic Flyway (Bellrose 1980).