Results 261 to 270 of about 38,839 (302)

Modeling of invasion on a heterogeneous habitat: taxis and multistability

Applied Mathematics and Computation, 2021
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Kurt Frischmuth, Alexander V. Budyansky, Vyacheslav Tsybulin   +2 more
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Mammal functional diversity and habitat heterogeneity: Implications for hominin habitat reconstruction

Journal of Human Evolution, 2020
Hominin habitats are frequently described as 'mosaic' based on interpretations of fossil assemblages comprising taxa with divergent functional adaptations (e.g., both grazers and browsers). This interpretation rests on an assumption that mammal functional diversity is positively associated with habitat heterogeneity.
W. Andrew Barr, Maryse Biernat
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Habitat Deterioration, Habitat Destruction, and Metapopulation Persistence in a Heterogenous Landscape

Theoretical Population Biology, 1997
Levins's unstructured metapopulation model predicts that the equilibrium fraction of empty habitat patches is a constant function of the fraction h of suitable patches in the landscape and that this constant equals the threshold value for metapopulation persistence.
Gyllenberg, Mats, Hanski, Ilkka
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Habitat association in populations on landscapes with continuous-valued heterogeneous habitat quality

Journal of Theoretical Biology, 2013
We explore a spatially implicit patch-occupancy model of a population on a landscape with continuous-valued heterogeneous habitat quality, primarily considering the case where the habitat quality of a site affects the mortality rate but not the fecundity of individuals at that site.
Hiebeler, David E., Michaud, Isaac J., Wasserman, Ben A., Buchak, Timothy D.   +3 more
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Habitat heterogeneity promotes the coexistence of exotic seaweeds

Oecologia, 2012
Despite the progressive accumulation of exotic species in natural communities, little effort has been devoted to elucidating the mechanisms underpinning the coexistence of invaders in environmentally and biologically heterogeneous systems. The exotic seaweeds, Asparagopsis taxiformis and Caulerpa racemosa, exhibit a segregated distribution on ...
TAMBURELLO, LAURA, BENEDETTI CECCHI, LISANDRO, Masini L, BULLERI, FABIO   +3 more
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Habitat heterogeneity and mammalian predator–prey interactions

Mammal Review, 2011
ABSTRACTIn predator–prey theory, habitat heterogeneity can affect the relationship between kill rates and prey or predator density through its effect on the predator's ability to search for, encounter, kill and consume its prey. Many studies of predator–prey interactions include the effect of spatial heterogeneity, but these are mostly based on species
GORINI, LUCREZIA, Linnell, John D. C., May, Roel, Panzacchi, Manuela, BOITANI, Luigi, Odden, Morten, Nilsen, Erlend B.   +6 more
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The Evolution of Conditional Dispersal Strategies in Spatially Heterogeneous Habitats

Bulletin of Mathematical Biology, 2009
To understand the evolution of dispersal, we study a Lotka-Volterra reaction-diffusion-advection model for two competing species in a heterogeneous environment. The two species are assumed to be identical except for their dispersal strategies: both species disperse by random diffusion and advection along environmental gradients, but with slightly ...
Hambrock, R., Lou, Y.
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Microtine Cycles: The Role of Habitat Heterogeneity

Oikos, 1980
We offer two hypotheses incorporating habitat patchiness to account for microtine cycles. Both emphasize the role of immigrants in generating microtine cycles. The first, the predation hypothesis, assumes that voles and grass are engaged in predatorvictim oscillations and that the voles are equally proficient predators in habitats of differing ...
Michael L. Rosenzweig, Zvika Abramsky
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Farmland biodiversity: is habitat heterogeneity the key?

Trends in Ecology & Evolution, 2003
Agricultural intensification has led to a widespread decline in farmland biodiversity measured across many different taxa. The changes in agricultural practices affect many different aspects of the farmland habitat, but agricultural industry, policy and much previous research has tended to be concerned with specific sectors or practices (e.g. pesticide
Tim G. Benton, Juliet A. Vickery, Jeremy D. Wilson   +2 more
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Density-Dependent Clutch Size Caused by Habitat Heterogeneity

The Journal of Animal Ecology, 1992
In some studies but not in others the average clutch size decreases with density. We propose that density-dependent fecundity occurs because, as density increases, proportionally more poor-quality sites (with small clutches) are occupied, and not because the clutch size in all territories decreases.
Dhondt, A.A., Kempenaers, B., Adriaensen, F.   +2 more
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