کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8497068 1553151 2016 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Predation may counteract climatic change as a driving force for movements of mountain ungulates
ترجمه فارسی عنوان
پیش گویی ممکن است تغییرات اقلیمی را به عنوان یک نیروی محرکه برای حرکات کبد کوهستان مقابله کند
کلمات کلیدی
تغییر آب و هوا، تغییر محیطی، تعاملات متقابل، گربه های بزرگ تعاملات شکارچی-طغیان،
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم دامی و جانورشناسی
چکیده انگلیسی
Temperature variations are expected to influence altitudinal movements of mountain herbivores and, in turn, those of their predators, but relevant information is scarce. We evaluated monthly relationships between temperature and altitude used by a large mountain-dwelling herbivore, the Himalayan tahr Hemitragus jemlahicus, and its main predator, the snow leopard Panthera uncia, in an area of central Himalaya for five consecutive years (2006-2010). In contrast to expectations, there was no significant direct relationship between altitude of tahr sightings and temperature. The mean altitude of tahr sightings decreased by c. 200 m throughout our study. As expected, snow leopard movements tracked those of tahr, although the core area of the snow leopard did not move downwards. Tahr remained the staple of the snow leopard diet: we suggest that the former did not move upwards in reaction to higher temperature to avoid encounters with the latter. Avoidance of competition with the larger common leopard Panthera pardus at lower altitudes could explain why snow leopards did not shift their core area downwards. Apparently, interspecific interactions (predation; competition) influenced movements of Himalayan tahr and snow leopards more than climatic variations.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Behavioural Processes - Volume 129, August 2016, Pages 101-104
نویسندگان
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