Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 7-Day Trial for You or Your Team.

Learn More →

Partitioning global patterns of freshwater fish beta diversity reveals contrasting signatures of past climate changes

Partitioning global patterns of freshwater fish beta diversity reveals contrasting signatures of... Ecology Letters (2011) 14: 325–334 Here, we employ an additive partitioning framework to disentangle the contribution of spatial turnover and nestedness to beta diversity patterns in the global freshwater fish fauna. We find that spatial turnover and nestedness differ geographically in their contribution to freshwater fish beta diversity, a pattern that results from contrasting influences of Quaternary climate changes. Differences in fish faunas characterized by nestedness are greater in drainage basins that experienced larger amplitudes of Quaternary climate oscillations. Conversely, higher levels of spatial turnover are found in historically unglaciated drainage basins with high topographic relief, these having experienced greater Quaternary climate stability. Such an historical climate signature is not clearly detected when considering the overall level of beta diversity. Quantifying the relative roles of historical and ecological factors in explaining present‐day patterns of beta diversity hence requires considering the different processes generating these patterns and not solely the overall level of beta diversity. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Ecology Letters Wiley

Partitioning global patterns of freshwater fish beta diversity reveals contrasting signatures of past climate changes

Loading next page...
 
/lp/wiley/partitioning-global-patterns-of-freshwater-fish-beta-diversity-reveals-wvMYVSH0Zl

References (50)

Publisher
Wiley
Copyright
© 2011 Blackwell Publishing Ltd/CNRS
ISSN
1461-023X
eISSN
1461-0248
DOI
10.1111/j.1461-0248.2011.01589.x
pmid
21303436
Publisher site
See Article on Publisher Site

Abstract

Ecology Letters (2011) 14: 325–334 Here, we employ an additive partitioning framework to disentangle the contribution of spatial turnover and nestedness to beta diversity patterns in the global freshwater fish fauna. We find that spatial turnover and nestedness differ geographically in their contribution to freshwater fish beta diversity, a pattern that results from contrasting influences of Quaternary climate changes. Differences in fish faunas characterized by nestedness are greater in drainage basins that experienced larger amplitudes of Quaternary climate oscillations. Conversely, higher levels of spatial turnover are found in historically unglaciated drainage basins with high topographic relief, these having experienced greater Quaternary climate stability. Such an historical climate signature is not clearly detected when considering the overall level of beta diversity. Quantifying the relative roles of historical and ecological factors in explaining present‐day patterns of beta diversity hence requires considering the different processes generating these patterns and not solely the overall level of beta diversity.

Journal

Ecology LettersWiley

Published: Apr 1, 2011

There are no references for this article.