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Mostrando ítems 11-20 de 47
Double Generalized Beta-Binomial and Negative Binomial Regression Models
(Universidad Nacional de Colombia - Sede Bogotá - Facultad de Ciencias - Departamento de Estadística, 2017-01-01)
Overdispersion is a common phenomenon in count datasets, that can greatly affect inferences about the model. In this paper develop three joint mean and dispersion regression models in order to fit overdispersed data. These ...
Modelos inflacionados de zeros: aplicações na análise de um questionário de frequencia alimentar
(2010)
This study aimed at using zero-inflated models to analyze a food frequency questionnaire (F.F.Q.) applied to elderly individuals from a medium-sized city in inner São P aulo state, investigating the models that can be best ...
Underdispersion of anti-herbivore defence traits and phylogenetic structure of cerrado tree species at fine spatial scale
(Wiley-blackwellHobokenEUA, 2012)
Phylogenies and traits provide distinct insights about the historical and contemporary assembly of aquatic insect communities
(2016-05-01)
The assumption that traits and phylogenies can be used as proxies of species niche has faced criticisms. Evidence suggested that phylogenic relatedness is a weak proxy of trait similarity. Moreover, different processes can ...
Exploring community assembly through an individual-based model for trophic interactions
(Elsevier B.V., 2009-01-10)
Traditionally, the dynamics of community assembly has been analyzed by means of deterministic models of differential equations. Despite the theoretical advances provided by such models, they are restricted to questions ...
Double generalized linear model for tissue culture proportion data: a Bayesian perspective
(ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD, 2011)
Joint generalized linear models and double generalized linear models (DGLMs) were designed to model outcomes for which the variability can be explained using factors and/or covariates. When such factors operate, the usual ...
Macroecological factors shape local-scale spatial patterns in agriculturalist settlements
(The Royal Society, 2017)
Macro-scale patterns of human systems ranging from population distribution to linguistic diversity have attracted recent attention, giving rise to the suggestion that macroecological rules shape the assembly of human ...
Phylogenetic clustering among aggressive competitors: evidence from odonate assemblages along a riverine gradient
(2016-09-01)
Studies on phylogenetic community ecology usually infer habitat filtering when communities are phylogenetically clustered or competitive exclusion when communities are overdispersed. This logic is based on strong competition ...
Fish complementarity is associated to forests in Amazonian streams
(2015-01-01)
The functional structure of communities is commonly measured by the variability in functional traits, which may demonstrate complementarity or redundancy patterns. In this study, we tested the influence of environmental ...