lecture5 - Spacing Patterns 29 Ju ne 2 No of quadrats No of...

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Spacing Patterns 29 Ju ne 1 Dispersion the distribution of organisms in space at one moment in time Causal processes: Causal processes: Clumped – patchy resources, or positive interactions among individuals Random – none, or multiple confounding processes Uniform – negative interactions among individuals How to Measure Dispersion in the Field How to Measure Dispersion in the Field No. of quadrats No. of individuals per quadrat s 2 x = ~ 1 Random No. of quadrats No. of individuals per quadrat s 2 x >1 Clumped s 2 = variance x = mean no. of individuals per quadrat
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Unformatted text preview: Spacing Patterns 29 Ju ne 2 No. of quadrats No. of individuals per quadrat s 2 x < 1 Uniform Compute the average distance divided by density (number of individuals per unit area) Average d /density d Dispersion Small Large Intermediate Clumped Uniform Random Spacing Patterns 29 Ju ne 3 Home Range – the area an animal normally lives How to measure home range 1. Map the sites where the animal was observed at different times 2. Connect outer sites...
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lecture5 - Spacing Patterns 29 Ju ne 2 No of quadrats No of...

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