作者: Martin Čech , Pavel Čech
DOI: 10.1007/S10750-013-1625-3
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摘要: Floods accompanied by high flow and water turbidity are usually believed to cause problems fish-eating birds mammals searching visually for their prey. In the present study diets of breeding kingfishers were studied during normal river situation a long-lasting flood event with respect diet composition, size fish prey food diversity index. During (flow 1.75 m3 s−1, Secchi disc depth 0.5–1 m), kingfisher was dominated benthic species (52.9% numbers, 63.9% weight), average taken 6.5 cm LT 3.0 g index reached its lowest value (1.57). contrast, 5–28 0.03–0.4 m) sub-surface (72.4% 76.1% weight) both (7.4 3.7 g) (1.83) increased significantly. The provided nestlings lower numbers larger sizes, which resulted in very similar weights young prior fledging when situations compared. This provides evidence that different foraging conditions adopt strategies maintain success.