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Regional Forest Fragmentation and the Nesting Success of Migratory BirdsAuthor(s): Scott K. Robinson; Frank R. Thompson III; Therese M. Donovan; Donald R. Whitehead; John Faaborg
Source: Science. Vol. 267 no. 5206.:p. 1987-1990.
Publication Series: Scientific Journal (JRNL)
Station: North Central Research Station
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DescriptionForest fragmentation, the disruption in the continuity of forest habitat, is hypothesized to be a major cause of population decline for, some species of forest birds because fragmentation reduces nesting (reproductive) success. Nest predation and parasitism by cowbirds increased with forest fragmentation in nine midwestern (United States)landscapes that varied from 6 to 95 percent forest cover within a 10-kilometer radius of the study areas. Observed reproductive rates were low enough for some species in the most fragmented landscapes to suggest that their populations are sinks that depend for perpetuation on immigration from reproductive source populations in landscapes with more extensive forest cover. Conservation strategies should consider preservation and restoration of large, unfragmented "core" areas in each region.
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CitationRobinson, Scott K.; Thompson III, Frank R.; Donovan, Therese M.; Whitehead, Donald R.; Faaborg, John. 1995. Regional Forest Fragmentation and the Nesting Success of Migratory Birds. Science. Vol. 267 no. 5206.:p. 1987-1990.
KeywordsMigratory birds, forest fragmentation, cowbirds, habitat fragmentation
- Landscape Level Effects on Forest Bird Populations in Eastern Broadleaf Forests: Principles for Conservation
- Reproductive success of migratory birds in habitat sources and sinks
- Relationships among North American songbird trends, habitat fragmentation, and landscape occupancy
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