Global ETD Search
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Showing 1 to 8 of 8 for “"ideal free distribution"”.
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A test of the ideal free distribution in panhandling humans
<p>The Ideal Free Distribution (Fretwell and Lucas, 1970), an optimization model from behavioral ecology, predicts that a group of animals will distribute themselves across habitats with unequal resources such that all animals have equal success rates. The six experiments of this dissertation …
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Distribution of Resource Use in an Informal Learning Environment: Using Sensor Technologies to Bring Geography Indoors
… quantitative analysis this research tests the ideal free distribution hypothesis. Findings indicate that certain measures of use and value support the ideal free distribution hypothesis. These results help to lay a groundwork for future geographic research in indoor spaces.
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An Investigation into Predictors of Competitive Success in a Large-Scale Group Foraging Task
Ideal Free Distribution Theory (IFD) (Fretwell & Lucas, 1970) suggests that the allocation of organisms to two or more resource sites is a function of the available resources at each site. Experimental arrangements involving human participants consist of a series of trials in which participants …
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Should I Stay or Should I Go? The Influence of Habitat Quality on Movement Patterns in Northern Crayfish (Orconectes virilis)
Observations of animal distributions have revealed that population densities have tracked resource quality. Various models have been proposed to account for such “resource matching.” For example, the Ideal Free Distribution (Fretwell and Lucas 1970) model employs habitat selection rules which …
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FACTORS DETERMINING HABITAT SELECTION BY SPRING MIGRATING WATERFOWL ALONG THE WABASH RIVER, ILLINOIS
… plays a critical role in determining the distribution of species, an equally important consideration that must be accounted for is temporal variation in the needs of the target species. Nutritional requirements, and thus the habitats used to fulfil those nutritional needs, will be …
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The Effects of Food, Cover and Competition on Demography, Dispersal and Density of Voles
… between habitats. These hypotheses included the ideal-free distribution and the ideal-despotic distribution hypotheses, the source-sink and the balanced dispersal models, and the saturation presaturation dispersal hypothesis. My results had led to several conclusions. First, the amount of …
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Oystercatchers and cockles : a predatory-prey study
… case the behaviour also conformed with a type II distribution yet neither handling time nor satiation appeared responsible. To account for this, a theoretical model was developed which generates type II functional responses from optimal foraging theory. Another model was developed which predicts …
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Fitness and Implications of Reproductive Decisions for Black Brant Nesting on the Yukon-Kuskokwim Delta, Alaska
… than the average female in the population. Ideal free distribution theory predicts that individuals distribute themselves spatially to produce equal mean fitness across patches. Individual female brant at the Tutakoke River, Alaska, brant colony typically return to the same brood rearing …