کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4393698 1305499 2010 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Territory size of the Mourning Wheatear Oenanthe lugens along an aridity gradient
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فرآیندهای سطح زمین
پیش نمایش صفحه اول مقاله
Territory size of the Mourning Wheatear Oenanthe lugens along an aridity gradient
چکیده انگلیسی

Breeding territories of Mourning Wheatear Oenanthe lugens were investigated in three study areas in Jordan to describe and explain variation in territory size along an aridity gradient. In moderately productive semi-deserts, Mourning Wheatears defended small territories (averages for two different areas 3.0 ha and 5.9 ha) that were arranged as relatively dense neighbourhood clusters, while in extremely arid deserts, territories were significantly larger (average 22.8 ha) and arranged in very loose clusters. Contender pressure and probably vegetation cover (as cue of sustained prey availability) played a dual role in determining territory sizes. The relative role of prey availability as proximate factor increased with aridity due to low contender pressure in extremely arid deserts.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Arid Environments - Volume 74, Issue 11, November 2010, Pages 1413–1417
نویسندگان
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