Show simple item record

dc.contributor.authorHui, Cang
dc.contributor.authorMcGeoch, Melodie A.
dc.date.accessioned2009-08-15T09:18:17Z
dc.date.available2009-08-15T09:18:17Z
dc.date.issued2007
dc.identifier.citationHui, C. & McGeoch, M.A. (2007) Capturing the ‘droopy tail’ in the occupancy-abundance relationship. Écoscience, 14: 103-108.en
dc.identifier.issn1195-6860en
dc.identifier.urihttp://hdl.handle.net/123456789/416
dc.description.abstractThe intraspecific occupancy–abundance relationship is a widely used descriptor of species distributions, with potential value to conservation and pest management for predicting species abundance from occurrence data. Six traditional and commonly used models for the description of this relationship include the Poisson, exponential, metapopulation, fractal, negative binomial, and improved negative binomial models. However, these models deviate systematically from empirical data. We present a model (the “droopy-tail” model or DTM) that improves estimates of occupancy at coarse scales by taking the percolation effect of scale on the occupancy–abundance relationship into account. The DTM is a fundamental departure from previous models because the slope of the scaling curve limits to negative infinity (rather than to zero) at coarse scales in addition to providing a good fit to empirical data at all spatial scales.en
dc.description.sponsorshipThis work was supported by the DST-NRF Centre of Excellence for Invasion Biology and the University of Stellenbosch.en
dc.format.extent418668 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoenen
dc.subjectaggregationen
dc.subjectdistributionen
dc.subjectmacroecologyen
dc.subjectpercolation effecten
dc.subjectrange sizeen
dc.subjectscale–area curvesen
dc.subjectspatial scaleen
dc.titleCapturing the ‘droopy tail’ in the occupancy-abundance relationshipen
dc.typeJournal Articlesen
dc.cibjournalÉcoscienceen
dc.cibprojectNAen


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record