Results 211 to 220 of about 321,236 (250)
Some of the next articles are maybe not open access.

A general framework for neutral models of community dynamics

Ecology Letters, 2009
Ecology Letters (2009) 12: 1287–1297 Abstract Neutral models of community dynamics are a powerful tool for ecological research, but their applications are currently ...
Ronen Kadmon, Omri Allouche
exaly   +3 more sources

Studying ecological communities from a neutral standpoint: A review of models’ structure and parameter estimation

open access: yesEcological Modelling, 2009
Neutral models provide an alternative to niche-based assembly rules of ecological communities by assuming that communities’ properties are shaped by the stochastic interplay between ecological drift, migration and speciation. The recent and ongoing interest about neutral assumptions has produced many developments on the theoretical side, with ...
François Munoz   +2 more
exaly   +5 more sources

An analytical approach to spatio-temporal dynamics of neutral community models

Journal of Mathematical Biology, 2009
We propose a spatial version of the neutral community model on a network of interconnected patches. The dynamical equations for the abundances and higher order moments of the abundances are established. Due to the neutrality assumption these equations are autonomous, enabling an exact analysis of spatio-temporal dynamics. We compute local (i.e., inside
Bart Haegeman
exaly   +6 more sources

Applying ecological models to communities of genetic elements: the case of neutral theory [PDF]

open access: yesMolecular Ecology, 2015
AbstractA promising recent development in molecular biology involves viewing the genome as a mini‐ecosystem, where genetic elements are compared to organisms and the surrounding cellular and genomic structures are regarded as the local environment. Here, we critically evaluate the prospects of ecological neutral theory (ENT), a popular model in ecology,
Karl Cottenie   +2 more
exaly   +3 more sources

A neutral model of community organization

Journal of Theoretical Biology, 1980
Abstract A discrete time simulation model is described which is neutral ( sensu Caswell, 1976 ) with respect to competition-based community organizational hypotheses. The model randomly locates rectangular niches (identified with species) in a two-dimensional resource hyperspace.
George S. Innis, James W. Haefner
openaire   +1 more source

An improved neutral community model for temporal observations in microbial communities

Ecological Modelling, 2018
Abstract Niche theory and neutral theory propose two alternative mechanisms for explaining the long-term coexistence of species in ecological communities. However, the true dynamic mechanisms of ecological communities likely fall in between these two theories of niches and neutrality.
Jie Li, Xuzhu Shen
openaire   +1 more source

Reconciling neutral community models and environmental filtering: theory and an empirical test

Oikos, 2008
It is widely believed that the neutral theory of biodiversity cannot be used for parameter inference if the assumption of neutrality is not met. The goal of this work is to extend this neutral framework to quantify the intensity of recruitment limitation (limited dispersal plus environmental filtering) in natural species assemblages.
Jabot, F., Etienne, R.S., Chave, J.
openaire   +1 more source

Testing the standard neutral model of biodiversity in lake communities

Oikos, 2006
neutral model describes how local communities are structured if population dynamics are statistically identical among species in a constant, possibly patchy, environment with random speciation. Tests of this model have been restricted largely to terrestrial communities. Here we tested the fit of this neutral model to fish, zooplankton and phytoplankton
Steven C. Walker, Hélène Cyr
openaire   +1 more source

Niche and neutral models predict asymptotically equivalent species abundance distributions in high-diversity ecological communities [PDF]

open access: yesProceedings of the National Academy of Sciences of the United States of America, 2010
A fundamental challenge in ecology is to understand the mechanisms that govern patterns of relative species abundance. Previous numerical simulations have suggested that complex niche-structured models produce species abundance distributions (SADs) that are qualitatively similar to those of very simple neutral models that ignore differences between ...
Ryan A Chisholm, Stephen W. Pacala
exaly   +3 more sources

Community Structure: A Neutral Model Analysis

Ecological Monographs, 1976
The relation of community structure to community function is the subject of much ecological theorizing. Three approaches to the problem, based on cybernetics, control theory, and niche theory, can be identified. They concur in giving biological interactions a major role in the determination of community structure in general, and species diversity in ...
openaire   +1 more source

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