نتایج جستجو برای: ecological niche factor analysis

تعداد نتایج: 3564586  

2013
Árpád S. Nyári Sushma Reddy

We present the first extensive and integrative analysis of niche evolution based on climatic variables and a dated molecular phylogeny of a heterogeneous avian group of Southeast Asian scimitar babblers of the genus Pomatorhinus. The four main clades of scimitar babblers have species that co-occur in similar areas across southern Asia but some have diverged at different timeframes, with the mos...

2013
Carmen Gabaldón Javier Montero-Pau Manuel Serra María José Carmona

Co-occurrence of cryptic species raises theoretically relevant questions regarding their coexistence and ecological similarity. Given their great morphological similitude and close phylogenetic relationship (i.e., niche retention), these species will have similar ecological requirements and are expected to have strong competitive interactions. This raises the problem of finding the mechanisms t...

Journal: :PLoS ONE 2007
Michael A. Brockhurst Nick Colegrave David J. Hodgson Angus Buckling

Adaptive radiations have played a key role in the evolution of biological diversity. The breadth of adaptive radiation in an invading lineage is likely to be influenced by the availability of ecological niches, which will be determined to some extent by the diversity of the resident community. High resident diversity may result in existing ecological niches being filled, inhibiting subsequent a...

2015
Kirk O. Winemiller Daniel B. Fitzgerald Luke M. Bower Eric R. Pianka

E-mail: [email protected] Abstract Ecology is often said to lack general theories sufficiently predictive for applications. Here, we examine the concept of a periodic table of niches and feasibility of niche classification schemes from functional trait and performance data. Niche differences and their influence on ecological patterns and processes could be revealed effectively by first perf...

2015
Kirk O. Winemiller Daniel B. Fitzgerald Luke M. Bower Eric R. Pianka Hector Arita

Ecology is often said to lack general theories sufficiently predictive for applications. Here, we examine the concept of a periodic table of niches and feasibility of niche classification schemes from functional trait and performance data. Niche differences and their influence on ecological patterns and processes could be revealed effectively by first performing data reduction/ordination analys...

2013
Baosheng Wang Jian-Feng Mao Wei Zhao Xiao-Ru Wang

Southwest China is a biodiversity hotspot characterized by complex topography, heterogeneous regional climates and rich flora. The processes and driving factors underlying this hotspot remain to be explicitly tested across taxa to gain a general understanding of the evolution of biodiversity and speciation in the region. In this study, we examined the role played by historically neutral process...

Journal: :Philosophical transactions of the Royal Society of London. Series B, Biological sciences 2013
Pierre-Olivier Montiglio Caterina Ferrari Denis Réale

Several personality traits are mainly expressed in a social context, and others, which are not restricted to a social context, can be affected by the social interactions with conspecifics. In this paper, we focus on the recently proposed hypothesis that social niche specialization (i.e. individuals in a population occupy different social roles) can explain the maintenance of individual differen...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2015
Tommaso Biancalani Lee DeVille Nigel Goldenfeld

We develop a theoretical framework for analyzing ecological models with a multidimensional niche space. Our approach relies on the fact that ecological niches are described by sequences of symbols, which allows us to include multiple phenotypic traits. Ecological drivers, such as competitive exclusion, are modeled by introducing the Hamming distance between two sequences. We show that a suitabl...

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