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Article: Food supply and parental feeding rates of Hooded Warblers in forest fragments.
- Article from:
- Wilson Bulletin
- Article date:
- March 1, 2002
- Author:
CopyrightCOPYRIGHT 2002 Wilson Ornithological Society. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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Research on fragmentation of temperate forests and food availability has suggested that small forest fragments contain less prey biomass than large forests. Burke and Nol (1998) found that invertebrate biomass in leaf litter was 10 to 36 times lower in Ovenbird (Seiurus aurocapillus) territories located in forests with >20 ha core area (area greater than 100 m from the edge). Furthermore, randomly located quadrants in small fragments contained less than half the invertebrate biomass compared to random quadrants in large forests. In Australia, Zanette et al. (2000) found a similar reduction in food for Eastern Yellow Robins (Eopsaltria australis); the abundance of ...
<55 ha) forests was half that of two large (>
<40 m wide) corridors. The mean distance to the nearest forest was 110 m (range 40-250 in). Land use between forest patches was mainly cultivated or fallow farm fields. Fragments were classified to size: small (0.7-4.0 ha, n = 12 fragments) or large (>