Using public sighting information to investigate coyote use of urban habitat

Article Abstract:

Public sighting information can supplement radio telemetry in the investigation of coyotes' habitat selection behavior provided sources of bias are identified. This was underscored in a 1990 experiment conducted in Seattle, WA, to evaluate the usefulness of the two data acquisition techniques. In the study, public sightings indicated that coyotes moved farther from forest habitat during the daytime. This contrasted with telemetry data which showed that coyotes remained close to forest habitat in the daytime.

Animals, Habitat selection, Coyotes

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A comparison of confidence interval methods for habitat use-availability studies

Article Abstract:

Three systems of generating simultaneous confidence interval that are used to estimate the actual proportion of use of a set of habitat types were evaluated for ease of use in habitat use-availability studies. The Bailey system of generating intervals for goodness-of-fit has the advantage of a continuity correction factor and an assumption of normality of the transformed counts that works even with small sample sizes.

Analysis, Usage, Mathematical models, Statistics, Statistics (Data), Biometry

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Comparison of two techniques for surveying headwater stream d

Article Abstract:

The rubble-rousing and light-touch stream amphibian survey methods are compared to determine if light-touch surveys give unbiased estimates of population and which technique is more cost-effective. The light-touch method is less costly than rubble-rousing for detecting presence of species, but is unlikely to reveal life stages that are buried in substrate.

Science & research, Washington, Physiological aspects, Comparative analysis, Habitat modification, Salamanders, Stream fauna, Stream animals

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