Title: Compensatory dynamics are rare in natural ecological communities.
Author: Houlahan, J.E.; Currie, D.J.; Cottenie, K.; Cumming, G.S.; Ernest, S.K.M.; Findlay, C.S.; Fuhlendorf, S.D.; Stevens, R.D.; Willis, T.J.; Woiwod, I.P.; Wondzell, S.M.;
Source: Proceedings of the National Academy of Sciences. 104(9): 3273-3277
Publication Series: Miscellaneous Publication
Description: Hubbell recently presented a theoretical framework, neutral models, for explaining large-scale patterns of community structure. This theory rests on the foundation of zero-sum ecological communities, that is, the assumption that the number of individuals in a community stays constant over time. If community abundances stay relatively constant, (i.e. approximating the zero-sum assumption) there is a key deductive prediction that on average across the entire community there should be strong negative covariance among species. We have used measures of community covariance to test for zero-sum dynamics in 36 natural communities (at different scales and composed of different taxa) and find that few communities exhibit dynamics consistent with the zero-sum assumption.
Keywords: Neutral models, community dynamics, diversity, competition
- 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 email@example.com to request a hard copy of this publication. (Please specify exactly
which publication you are requesting and your mailing address.)
XML: View XML
Houlahan, J.E.; Currie, D.J.; Cottenie, K.; Cumming, G.S.; Ernest, S.K.M.; Findlay, C.S.; Fuhlendorf, S.D.; Stevens, R.D.; Willis, T.J.; Woiwod, I.P.; Wondzell, S.M. 2007. Compensatory dynamics are rare in natural ecological communities. Proceedings of the National Academy of Sciences. 104(9): 3273-3277
Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility