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Publication Details

Please note this explorer contains 2017 and prior publications and is no longer updated. Visit Data Reports Explorer for the latest NCCOS research data and reports.

Statistical analyses to support guidelines for marine avian sampling: final report.

Author(s): Kinlan, B.P., E.F. Zipkin, A.F. O’Connell, and C. Caldow.


Center Team: Biogeography

Name of Publisher: NOAA

Place of Publication: Silver Spring, MD

Publication Type: NOAA Technical Memoranda

Date of Publication: 2012

Reference Information: NOAA Technical Memorandum NOS NCCOS 158

Extent of Work: 77 pp.

Abstract: Interest in development of offshore renewable energy facilities has led to a need for high-quality, statistically robust information on marine wildlife distributions. A practical approach is described to estimate the amount of sampling effort required to have sufficient statistical power to identify species-specific “hotspots” and “coldspots” of marine bird abundance and occurrence in an offshore environment divided into discrete spatial units (e.g., lease blocks), where “hotspots” and “coldspots” are defined relative to a reference (e.g., regional) mean abundance and/or occurrence probability for each species of interest. For example, a location with average abundance or occurrence that is three times larger the mean (3x effect size) could be defined as a “hotspot,” and a location that is three times smaller than the mean (1/3x effect size) as a “coldspot.” The choice of the effect size used to define hot and coldspots will generally depend on a combination of ecological and regulatory considerations. A method is also developed for testing the statistical significance of possible hotspots and coldspots. Both methods are illustrated with historical seabird survey data from the USGS Avian Compendium Database.

Availability: Online.

Related Attachment: Download file (.pdf)

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