کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6481844 1402142 2016 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Isotopic niche structure of a mammalian herbivore assemblage from a West African savanna: Body mass and seasonality effect
ترجمه فارسی عنوان
ساختار توزیع ایزوتوپی یک مجموعه گیاهان دارویی پستاندار از یک وواان آفریقایی غربی: اثر جرم بدن و فصلی
کلمات کلیدی
دامنه رژیم غذایی، جرم بدن، مرورگر، گرزار، رقابت، همزیستی،
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم دامی و جانورشناسی
چکیده انگلیسی

Understanding the mechanisms of species coexistence within local assemblages can play a crucial role in conservation of a species. There is little understanding of how large mammalian bovid species from West Africa partition diet resources, and to what extent they may vary their diet and habitat selection seasonally in order to coexist. Here we studied an assemblage of eleven bovid species in Pendjari Biosphere Reserve, West Africa and used faecal stable isotopes of carbon (δ13C) and nitrogen (δ15N) to test the impact of body mass diet partitioning at a seasonal scale. We found a significant positive relationship between isotopic niche similarity and body size similarity both in dry (p < 0.001) and wet (p < 0.001) season. Partitioning of carbon isotope niches is at least partly due to interactions amongst species rather than historical effects. Our findings also show numerous patterns in resource partitioning amongst the 11 bovid species studied, suggesting that different species used dietary resources in contrasting ways. In practice, actual resource competition between bovid species is difficult to demonstrate, but there exists much overlap in diet along the stable carbon isotope axis for most of the studied species. However we conclude that in our study area, especially in the wet season, niche breadth and diet overlap remain large. Abundant resources and low herbivore densities mean there is no need for herbivores to specialize, because they do not have to compete over scarce resources.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Mammalian Biology - Zeitschrift für Säugetierkunde - Volume 81, Issue 6, November 2016, Pages 644-650
نویسندگان
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