Densities of <i>Scrobicularia plana</i>, <i>Hediste diversicolor</i> and <i>Hydrobia ulvae</i> and sex-specific prey selection (α) by black-tailed godwits at the five study sites of the Tagus estuary.
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Invertebrate density is expressed as mean ± SE, in ind.m−2. Prey selection was estimated using the Manly's preference index (α). Values of α in bold indicate positive selection of a specific prey (see methods).
创建时间：
2012-03-30
