Results 41 to 50 of about 61,462 (287)

How self-regulation, the storage effect and their interaction contribute to coexistence in stochastic and seasonal environments [PDF]

open access: yes, 2019
Explaining coexistence in species-rich communities of primary producers remains a challenge for ecologists because of their likely competition for shared resources.
Barraquand, Frederic, Picoche, Coralie
core   +2 more sources

Resource diversity mitigates the effects of intraspecific competition in co-occurring cryptic nematode species

open access: yesFrontiers in Marine Science
Intraspecific competition and resource diversity are considered major drivers of niche differentiation, which are expected to promote population niche expansion by driving individuals to feed on alternative resources and/or by enhancing individual diet ...
Rodgee Mae Guden   +3 more
doaj   +1 more source

Awakened oscillations in coupled consumer-resource pairs [PDF]

open access: yes, 2014
The paper concerns two interacting consumer-resource pairs based on chemostat-like equations under the assumption that the dynamics of the resource is considerably slower than that of the consumer.
Mustafin, Almaz
core   +3 more sources

Widespread disruptive selection in the wild is associated with intense resource competition

open access: yesBMC Evolutionary Biology, 2012
Background Disruptive selection has been documented in a growing number of natural populations. Yet, its prevalence within individual systems remains unclear. Furthermore, few studies have sought to identify the ecological factors that promote disruptive
Martin Ryan A, Pfennig David W
doaj   +1 more source

Insecticide-mediated shift in ecological dominance between two competing species of grain beetles.

open access: yesPLoS ONE, 2014
Competition is a driving force regulating communities often considered an intermittent phenomenon, difficult to verify and potentially driven by environmental disturbances.
Erick Maurício G Cordeiro   +2 more
doaj   +1 more source

Food Quality in Producer-Grazer Models: A Generalized Analysis

open access: yes, 2010
Stoichiometric constraints play a role in the dynamics of natural populations, but are not explicitly considered in most mathematical models. Recent theoretical works suggest that these constraints can have a significant impact and should not be ...
Feudel, Ulrike   +4 more
core   +2 more sources

Cultivar diversity as a means of ecologically intensifying dry matter production in a perennial forage stand [PDF]

open access: yes, 2014
The relationship between genotypic diversity and productivity has not been adequately explored in perennial forage production systems despite strong theoretical and empirical evidence supporting diversity\u27s role in ecosystem functioning in other ...
Pollnac, F. W.   +2 more
core   +2 more sources

GRAY WOLF POPULATION PROJECTION WITH INTRASPECIFIC COMPETITION

open access: yesNatural Resource Modeling, 2014
AbstractCompetition effects are incorporated into a model of wolf‐population dynamics. A classic single‐state model is augmented into a dual‐state mapping of the evolution of the size of wolf packs and the number of wolf packs. This dual‐state model, unlike the single‐state density dependent model, is amenable to analyzing intraspecific competition ...
Hochard, J., Finnoff, D.
openaire   +1 more source

Effects of intraspecific competition on growth, architecture and biomass allocation of Quercus Liaotungensis

open access: yesJournal of Plant Interactions, 2019
Liaodong oak (Quercus liaotungensis) is an ecologically important tree species on the Loess Plateau in China that experiences strong intraspecific competition.
Xiao-zhou Yang   +2 more
doaj   +1 more source

Biomass-density data analysis: a comment on Cabaco et al. (2013) [PDF]

open access: yes, 2015
Appropriate use of mathematics and statistics is fundamental for sound interpretations of ecological results and to prevent inaccurate conclusions. Throughout the article by Cabaco etal.
Arenas   +20 more
core   +1 more source

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