Results 201 to 210 of about 463,450 (256)

Habitat selection by grayling—I. Spawning habitats

Journal of Fish Biology, 1995
Grayling spawning sites were investigated in two French rivers, the Pollon (1 year) and the Suran (2 years) and described by current velocity, water depth, and substrate composition, completed by an assessment of bottom shear stress with FST‐hemispheres. A comparison was made between used and available habitats, the latter being characterized by random
P. Sempeski, P. Gaudin
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Habitat Selection in Birds

The Condor, 1987
Introduction. Habitat Selection in Specific Bird Taxa. Habitat Selection in Specific Habitat Types. A Variety of Approaches to Habitat Selection in Birds.
Nathaniel T. Wheelwright, Martin L. Cody
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Habitat Selection: Introduction

1990
Habitat selection is a key component in the adaptive response of animals to their environments, and it can profoundly influence the selective regime to which the pre-adult and, in some cases, the adult stages of the organisms are exposed.
J. S. F. Barker, William T. Starmer, Ross J. MacIntyre   +2 more
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A dynamic habitat selection game

Mathematical Biosciences, 1990
A patch selection game is formulated and analyzed. Organisms can forage in one of H patches. Each patch is characterized by the cost of foraging, the density and value of food, the predation risk, and the density of conspecifics. The presence of conspecifics affects the finding and sharing of food, and the predation risk. Optimal foraging theory can be
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Habitat selection in evolving mole rats

Oecologia, 1979
The actively speciating four chromosomal species of fossorial mole rats of the Spalax ehrenbergi complex in Israel (2n=52, 58, 54 and 60) which inhabit an increasingly arid environment in this order were tested to determine their habitat preference. The testing apparatus simulated four climatic regimes based on temperature and humidity combinations ...
Eviatar, Nevo, Ruth, Guttman, Michael, Haber, Ephraim, Erez   +3 more
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Habitat Selection at Low Population Densities

Ecology, 2001
Much of current habitat-selection theory assumes that individual fitness monotonically declines as a function of density, and that social interactions among settlers are entirely competitive. However, when animals settle at low densities, other fitness distributions (e.g., Allee effects) and positive interactions among settlers (e.g., conspecific ...
Correigh M. Greene, Judy A. Stamps
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Perspectives of habitat selection

2001
In Chapter 4 questions concerning the choice of monitoring habitats are discussed. It is argued that the choice in principle shall be the result of a “case by case” assessment, which in fact is what should be processed during the ecological risk assessment.
Gösta Kjellsson, Morten Tune Strandberg
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Habitat Selection in Birds

1965
Publisher Summary This chapter discusses habitat selection in birds that involves recognition of the habitat and establishment of preferences. An analysis of the manner whereby habitat preferences are fixed are preceded by a study of the sensory capabilities of the animals in question.
P.H. Klopfer, J.P. Hailman
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Density-dependent habitat selection in plants

Evolutionary Ecology, 1997
Pea plants exhibit density-dependent habitat selection as they grow. We split the root of a young pea (Pisum sativum L.) so that half grew in one pot and half in an adjacent pot. The rest of the plant remained intact. This is a ‘fence-sitter plant’. Each root-half was exposed either to no competition in its pot or to competitor plants sharing its pot ...
Gersani Mordechai, Zvika Abramsky, Omer Falik   +2 more
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Habitat selection and the perceptual trap

Ecological Applications, 2010
The concept of “ecological traps” was introduced over three decades ago. An ecological trap occurs when, by various mechanisms, low‐quality (yielding low fitness) habitat is more attractive than good habitat, thus coaxing individuals to settle there despite a resultant loss of fitness. Empirical work on such traps has increased dramatically in the past
Michael A, Patten, Jeffrey F, Kelly
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