Oecologia

, Volume 159, Issue 1, pp 151–159

Spatial autocorrelation and dispersal limitation in freshwater organisms

  • Jonathan B. Shurin
  • Karl Cottenie
  • Helmut Hillebrand
Community Ecology - Original Paper

DOI: 10.1007/s00442-008-1174-z

Cite this article as:
Shurin, J.B., Cottenie, K. & Hillebrand, H. Oecologia (2009) 159: 151. doi:10.1007/s00442-008-1174-z

Abstract

Dispersal can limit the ranges of species and the diversity of communities. Despite its importance, little is known about its role in freshwater habitats and its relation to habitat type (lentic vs. lotic), especially for organisms with cryptic dispersal methods such as plankton. Poor dispersers are expected to show more clumped distributions or greater spatial autocorrelation (SA) in community composition than good dispersers. We examined patterns of SA across freshwater taxa with different dispersal modes (active vs. passive) and their association with habitat type (lake vs. stream) using 18 spatially explicit community composition data sets. We found significant relationships between SA and body size among taxa in lake habitats, but not in streams. However, the increase in SA with body size in lakes was driven entirely by fishes—organisms ranging in size from diatoms to macro-invertebrates showed equivalent levels of SA. These results support the idea that large organisms are less effective dispersers in aquatic environments, resulting in greater SA in community structure over broad scales. Streams may be effectively more connected than lakes as patterns of SA and body size were weaker in lotic habitats. Our data suggest that the critical threshold where greater body size increases dispersal limitation seems to come at the juncture between invertebrates and vertebrates rather than that between unicellular and multicellular organisms as has been previously suggested.

Keywords

Meta-analysis Plankton Fish Macro-invertebrates Lakes versus streams 

Supplementary material

442_2008_1174_MOESM1_ESM.doc (178 kb)
Supplementary tables and figures MOESM1 [INSERT CAPTION HERE] (DOC 177 kb)

Copyright information

© Springer-Verlag 2008

Authors and Affiliations

  • Jonathan B. Shurin
    • 1
  • Karl Cottenie
    • 2
  • Helmut Hillebrand
    • 3
  1. 1.Department of ZoologyUniversity of British ColumbiaVancouverCanada
  2. 2.Department of Integrative BiologyUniversity of GuelphGuelphCanada
  3. 3.Institute for Chemistry and Biology of the Marine EnvironmentCarl-von-Ossietzky-University OldenburgWilhelmshavenGermany