Matrix models for quantifying competitive intransitivity from species abundance data
نویسندگان
چکیده
منابع مشابه
Matrix models for quantifying competitive intransitivity from species abundance data
W. Ulrich ([email protected]), Chair of Ecology and Biogeography, Nicolaus Copernicus Univ. in Toruń, Lwowska1, PL-87-100 Toruń, Poland. – S. Soliveres and F. T. Maestre, Área de Biodiversidad y Conservación, Depto de Biología y Geología, Escuela Superior de Ciencias Experimentales y Tecnología, Univ. Rey Juan Carlos, ES-28933 Móstoles, Spain. SS also at: Inst. of Plant Sciences, Univ. of Bern, Al...
متن کاملCompetitive intransitivity promotes species coexistence.
Using a spatially explicit cellular automaton model with local competition, we investigate the potential for varied levels of competitive intransitivity (i.e., nonhierarchical competition) to promote species coexistence. As predicted, on average, increased levels of intransitivity result in more sustained coexistence within simulated communities, although the outcome of competition also becomes...
متن کاملSpecies coexistence, intransitivity, and topological variation in competitive tournaments.
Competitive intransitivity occurs when species' competitive abilities cannot be listed in a strict hierarchy, but rather form competitive loops, as in the game 'Rock-Paper-Scissors'. Indices are useful for summarizing intransitivity in communities; however, as with most indices, a great deal of information is compressed into single number. So while recent ecological theory, experiments, and nat...
متن کاملa new approach to credibility premium for zero-inflated poisson models for panel data
هدف اصلی از این تحقیق به دست آوردن و مقایسه حق بیمه باورمندی در مدل های شمارشی گزارش نشده برای داده های طولی می باشد. در این تحقیق حق بیمه های پبش گویی بر اساس توابع ضرر مربع خطا و نمایی محاسبه شده و با هم مقایسه می شود. تمایل به گرفتن پاداش و جایزه یکی از دلایل مهم برای گزارش ندادن تصادفات می باشد و افراد برای استفاده از تخفیف اغلب از گزارش تصادفات با هزینه پائین خودداری می کنند، در این تحقیق ...
15 صفحه اولComparing models of species abundance Arising from :
E1 Ecologists are struggling to explain how so many tropical tree species can coexist in tropical forests, and several empirical studies have demonstrated that negative density dependence is an important mechanism of treespecies coexistence. Volkov et al. compare a model incorporating negative density dependence with a dispersal-limited neutral model and claim that each predicts six empirical s...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Oikos
سال: 2014
ISSN: 0030-1299
DOI: 10.1111/oik.01217