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Arthropods of native and exotic vegetation and their association with willow flycatchers and Wilson's warblers

Informally Refereed
Download (PDF 190 KB): https://research.fs.usda.gov/download/treesearch/35792.pdf

Abstract

We compared abundance of migrating Willow Flycatchers and Wilson's Warblers to the abundance of arthropods in exotic and native vegetation at Bosque del Apache National Wildlife Refuge. We trapped arthropods using glue-boards in 1996 and 1997 in the same cottonwood, saltcedar, and willow habitats where we mist-netted birds during spring and fall migration. There were fewer arthropods, particularly flies, in saltcedar. We have mixed evidence that Willow Flycatchers and Wilson's Warblers respond to variation in insect numbers. Wilson's Warblers appear to be more abundant in willow than in other vegetation types in response to the abundance of small flies.

Parent Publication

Citation

DeLay, Linda S.; Finch, Deborah M.; Brantley, Sandra; Fagerlund, Richard; Means, Michael D.; Kelly, Jeffrey F. 1999. Arthropods of native and exotic vegetation and their association with willow flycatchers and Wilson's warblers. In: Finch, Deborah M.; Whitney, Jeffrey C.; Kelly, Jeffrey, F.; Loftin, Samuel R. Rio Grande ecosystems: linking land, water, and people: Toward a sustainable future for the Middle Rio Grande Basin. 1998 June 2-5; Albuquerque, NM. Proc. RMRS-P-7. Ogden, UT: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. p. 216-221.