You are here: Home
/ Publication Information
Title: Fitting species-accumulation functions and assessing regional land use impacts on avian diversity
Author: Flather, Curtis H.
Source: Journal of biogeography. 23(2): 155-168
Publication Series: Miscellaneous Publication
Description: As one samples species from a particular assemblage, the initial rapid rate with which new species are encountered declines with increasing effort. Nine candidate models to characterize species-accumulation functions were compared in a search for a model that consistently fit geographically extensive avian survey data from a wide range of environmental conditions. Landscape-specific species-accumulation curves generated under a bootstrap resampling plan were best described by a generalized Weibull cumulative distribution function. Traditional species-area models of cumulative species richness as a function of accumulated sample had notable functional bias. The Weibull model fitted species-accumulation data equally well among sixty-six forested landscapes in the eastern U.S. Landscapes with a greater proportion of agricultural and urban land uses accumulated species more slowly than landscapes which retained a greater proportion of natural habitats (r=-0.64, P<0.001). This finding supports predictions of ecosystem behavior under human land use. There was no evidence that intermediate levels of land use intensity maximized accumulation rates. The approach reviewed in this paper makes no assumptions about the form of the species-abundance distribution or how species are distributed in space, thereby offering some advantages over more conventional diversity indices for characterizing how species assemblages respond to anthropogenic disturbance. Investigation of how species accumulation varies over time in a given geographic area is needed to evaluate fully the potential application of this approach to regional land use planning.
Keywords: species-accumulation functions, specics-area relations, birds, land use impacts, regional scale
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
- You may send email to firstname.lastname@example.org to request a hard copy of this publication. (Please specify exactly which publication you are requesting and your mailing address.)
XML: View XML
Flather, Curtis H. 1996. Fitting species-accumulation functions and assessing regional land use impacts on avian diversity. Journal of biogeography. 23(2): 155-168
Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility