Biogenic structure and foraging by five species of shorebirds (Charadrii) |
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| Authors: | Mark W Luckenbach |
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| Institution: | 1. Belle W. Baruch Institute for Marine Biology and Coastal Research, University of South Carolina, Columbia, SC 29208, U.S.A.;2. Department of Biology, University of South Carolina, Columbia, SC 29208, U.S.A. |
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| Abstract: | Observations were made of the location and duration of foraging by five species of shorebirds in relation to the tubes of Diopatra cuprea (Polychaeta). Infaunal abundances in sites with D. cuprea tubes exceeded those in surrounding tubefree areas (120 individuals vs 29 individuals per 0·01 m2, respectively). Of 112 shorebird foraging episodes observed only 4 were in the vicinity of D. cuprea tubes. Despite a greater abundance of prey items around worm tubes, shorebirds avoided feeding in such areas. D. cuprea tubes appear to provide an effective refuge for macrofauna from shorebird predation. |
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| Keywords: | infauna Aves benthos |
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