Home Range & Habitat Selection

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4 Terms

1
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How can home ranges be defined?

  • as the area traversed by an individual for food, mating, caring, not occasional explorations

  • The part of an animal’s cognitive map that it updates

2
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<p>What are the 2 ways home range maps are drawn? Describe them.</p>

What are the 2 ways home range maps are drawn? Describe them.

  • minimum convex polygon - smallest polygon that can be drawn around a point with all external areas convex

  • Kernel estimator - represents the intensity/frequency of land use using kernels that increase the likelihood of an animal being seen in that area

<ul><li><p>minimum convex polygon - smallest polygon that can be drawn around a point with all external areas convex</p></li><li><p>Kernel estimator - represents the intensity/frequency of land use using kernels that increase the likelihood of an animal being seen in that area</p></li></ul><p></p>
3
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<p>What are some issues with the minimum convex polygon approach to drawing home ranges?</p>

What are some issues with the minimum convex polygon approach to drawing home ranges?

can include areas that animals don’t visit or rarelt explore, such as lakes, or just include areas that the animal doesn’t visit (due to the convex rule)

<p>can include areas that animals don’t visit or rarelt explore, such as lakes, or just include areas that the animal doesn’t visit (due to the convex rule)</p><p></p>
4
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<p>How do kernel estimators for defining home ranges work?</p>

How do kernel estimators for defining home ranges work?

  • collects data on where an animal was seen, converted to a “kernel"

  • each kernel represents the probability of finding an animal in that area

  • multiple sightings = multiple kernels = more likely to see that animal there

  • creates map where peaks represent areas of higher use

<ul><li><p>collects data on where an animal was seen, converted to a&nbsp;“kernel"</p></li><li><p>each kernel represents the probability of finding an animal in that area</p></li><li><p>multiple sightings = multiple kernels = more likely to see that animal there</p></li><li><p>creates map where peaks represent areas of higher use</p></li></ul><p></p>