کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2415653 1103970 2007 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effects of crop type and aerial invertebrate abundance on foraging barn swallows Hirundo rustica
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم زراعت و اصلاح نباتات
پیش نمایش صفحه اول مقاله
Effects of crop type and aerial invertebrate abundance on foraging barn swallows Hirundo rustica
چکیده انگلیسی

The influence of crop type (pasture, silage and cereal) on the abundance of aerial invertebrates and the density of foraging barn swallows Hirundo rustica was investigated in lowland mixed farmland in southern Britain. After taking weather and other confounding factors into account aerial invertebrate abundance over pasture fields was more than double that over silage, and more than three and a half times greater than that over cereal fields. Pasture fields also hosted approximately twice as many foraging barn swallows as both silage and cereal fields. The results suggest that past reductions in the availability of pasture will have reduced the numbers of aerial invertebrates, and may have contributed to barn swallow population declines, and possibly those of other aerial insectivores. Maintaining grazed pasture, especially that which is closest to farm buildings and other potential nest sites, will help to maintain breeding barn swallow populations on lowland farmland.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Agriculture, Ecosystems & Environment - Volume 122, Issue 2, October 2007, Pages 267–273
نویسندگان
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