Conservation Biology · 1993 · 153 citations · 3 references
Natural ResourcesBiodiversity ConservationConservation BiologyConservation EcologyConservation ZoologyWildlife ManagementBird ConservationBird Habitat UseGrassland ConservationGrassland ManagementReserve DesignWildlife ConservationBird Conservation PlanningBird Nesting HabitatGrassland Biodiversity ConservationGrassland Bird EcologyReserve Effectiveness
Several bird species that breed in the temperate grasslands of North America, many of which winter in the Neotropics, declined in abundance during the past quarter century. The Lark Bunting and Grasshopper Sparrow, as examples, declined by about half during that period, as indexed by the U.S. Fish and Wildlife Service's Breeding Bird Survey. Populations of other grassland species have also diminished steadily, if not as spectacularly.
3
The Breeding Bird Survey: Its First Fifteen Years, 1965-1979,
C.S. Robbins, D. Bystrak, P.H. Geissler · Resource Publication · 1986 · 383 citations
Life Sciences, Demography, Ecology +14
Population Estimates of Breeding Birds in North Dakota
Robert E. Stewart, Harold A. Kantrud · The Auk · 1972 · 130 citations · Full text
Life Sciences, Ecology, Zoology +14
Topics in route-regression analysis
P.H. Geissler, John R. Sauer · 1990 · 91 citations