Using variance components to estimate power in a hierarchically nested sampling design Dinsmore, Stephen Dzul, Maria Dixon, Philip Quist, Michael Dixon, Philip Dinsmore, Stephen Bower, Michael Wilson, Kevin Gaines, D. Bailey
dc.contributor.department Natural Resource Ecology and Management
dc.contributor.department Statistics 2018-02-17T11:33:05.000 2020-07-02T06:57:54Z 2020-07-02T06:57:54Z 2013-01-01
dc.description.abstract <p>We used variance components to assess allocation of sampling effort in a hierarchically nested sampling design for ongoing monitoring of early life history stages of the federally endangered Devils Hole pupfish (DHP) (<em>Cyprinodon diabolis</em>)<em>.</em> Sampling design for larval DHP included surveys (5 days each spring 2007–2009), events, and plots. Each survey was comprised of three counting events, where DHP larvae on nine plots were counted plot by plot. Statistical analysis of larval abundance included three components: (1) evaluation of power from various sample size combinations, (2) comparison of power in fixed and random plot designs, and (3) assessment of yearly differences in the power of the survey. Results indicated that increasing the sample size at the lowest level of sampling represented the most realistic option to increase the survey’s power, fixed plot designs had greater power than random plot designs, and the power of the larval survey varied by year. This study provides an example of how monitoring efforts may benefit from coupling variance components estimation with power analysis to assess sampling design.</p>
dc.description.comments <p>This is an article from <em>Environmental Monitoring and Assessment</em> 185 (2013): 405, doi:<a href="" target="_blank">10.1007/s10661-012-2562-8</a>. Posted with permission.</p>
dc.format.mimetype application/pdf
dc.identifier archive/
dc.identifier.articleid 1051
dc.identifier.contextkey 8056148
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath stat_las_pubs/51
dc.language.iso en
dc.source.bitstream archive/|||Sat Jan 15 00:43:22 UTC 2022
dc.source.uri 10.1007/s10661-012-2562-8
dc.subject.disciplines Natural Resources and Conservation
dc.subject.disciplines Natural Resources Management and Policy
dc.subject.disciplines Statistics and Probability
dc.subject.keywords Devils hole
dc.subject.keywords Power analysis
dc.subject.keywords Nested sampling design
dc.subject.keywords Variance components
dc.subject.keywords Pupfish
dc.title Using variance components to estimate power in a hierarchically nested sampling design
dc.type article
dc.type.genre article
dspace.entity.type Publication
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