Results 291 to 300 of about 730,688 (347)

On the evidence for species coexistence: a critique of the coexistence program

Ecology, 2010
A major challenge in ecology is to understand how the millions of species on Earth are organized into biological communities. Mechanisms promoting coexistence are one such class of organizing processes, which allow multiple species to persist in the same trophic level of a given web of species interactions. If some mechanism promotes the coexistence of
Mark A McPeek, Adam M Siepielski
exaly   +3 more sources

Coexistence with Chemotaxis

SIAM Journal on Mathematical Analysis, 2000
There is considered a coupled system of elliptic equations together with boundary conditions which model steady state solutions of a reaction-difussion system describing the competition in a nonmixed bioreactor with chemostatic response. The autor is interested in the existence of its positive solutions.
openaire   +1 more source

The Riddle of Coexistence

Science, 2001
Two million years ago, three kinds of hominins walked the same valley in South Africa. Did they meet—and compete?
openaire   +1 more source

On Competition-Mediated Coexistence

SIAM Journal on Applied Mathematics, 1997
Summary: Two competing species, denoted B and C, currently inhabit a common habitat patch. Left alone, B can be expected to exclude C from the patch over time. An exotic species A is introduced into the patch. A competes with both B and C. Absent B, A can also be expected to exclude C from the patch over time, whereas absent C, A and B can be expected ...
James R. Ward Jr.   +1 more
openaire   +2 more sources

Neuropeptides and Coexistence

2009
Neuropeptides are small proteins produced by neurons that act on G protein-coupled receptors and are responsible for slow-onset, long-lasting modulation of synaptic transmission. Neuropeptides often coexist with each other or with other neurotransmitters in single neurons.
openaire   +3 more sources

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