J Jaenike, RD Holt - The American Naturalist, 1991 - journals.uchicago.edu
Because adaptive shifts may often be initiated by evolutionary changes in behavior, it is of interest to determine the extent to which natural populations harbor genetic variation for …
Habitat selection, and its associated density and frequency-dependent evolution, has a profound influence on such vital phenomena as population regulation, species interactions …
SL Pimm, ML Rosenzweig, W Mitchell - Ecology, 1985 - Wiley Online Library
A graphical model describing the optimal choices of two species competing for resources in two types of habitats is tested with hummingbirds in the field. In this model, both species …
GH Orians - The American Naturalist, 1962 - journals.uchicago.edu
A long and intense controversy over the mechanisms of control of animal populations in nature has accompanied the development of ecology as a vigorous science during the past …
JW Glasser - The American Naturalist, 1979 - journals.uchicago.edu
Although ecological theorists have shown that frequency-dependent prey selection may permit the coexistence of quite similar competitors, there are compelling reasons to suggest …
Microhabitat preferences are assumed to be adaptive, suggesting that fitness is higher in preferred microhabitats and potentially reflecting natural selection on habitat choices. I …
In the model described, we attempt to link breeding-site selection to population dynamics for situations in which there is more than one distinct type of habitat. The distribution of …
Any character that has a substantial effect on a species' distribution and abundance can exert a variety of indirect effects on evolutionary processes. It is suggested that an …
ML Rosenzweig - Evolutionary Ecology, 1987 - Springer
Question: What are the conditions required for natural selection to produce phenotypes specially adapted to the various habitats available in nature? Model: Assume there are two …