Landscape Ecology

, Volume 27, Issue 2, pp 303–317

Characterizing connectivity relationships in freshwaters using patch-based graphs

  • Tibor Erős
  • Julian D. Olden
  • Robert S. Schick
  • Dénes Schmera
  • Marie-Josée Fortin
Research Article

Abstract

Spatial graphs in landscape ecology and conservation have emerged recently as a powerful methodology to model patterns in the topology and connectivity of habitat patches (structural connectivity) and the movement of genes, individuals or populations among these patches (potential functional connectivity). Most spatial graph’s applications to date have been in the terrestrial realm, whereas the use of spatially explicit graph-based methods in the freshwater sciences has lagged far behind. Although at first patch-based spatial graphs were not considered suitable for representing the branching network of riverine landscapes, here we argue that the application of graphs can be a useful tool for quantifying habitat connectivity of freshwater ecosystems. In this review we provide an overview of the potential of patch-based spatial graphs in freshwater ecology and conservation, and present a conceptual framework for the topological analysis of stream networks (i.e., riverscape graphs) from a hierarchical patch-based context. By highlighting the potential application of graph theory in freshwater sciences we hope to illustrate the generality of spatial network analyses in landscape ecology and conservation.

Keywords

Ecological networks Spatial graphs Graph theory Stream network Dendritic networks Fragmentation 

Copyright information

© Springer Science+Business Media B.V. 2011

Authors and Affiliations

  • Tibor Erős
    • 1
  • Julian D. Olden
    • 2
  • Robert S. Schick
    • 3
  • Dénes Schmera
    • 4
  • Marie-Josée Fortin
    • 5
  1. 1.Balaton Limnological Research Institute of the Hungarian Academy of SciencesTihanyHungary
  2. 2.School of Aquatic and Fishery SciencesUniversity of WashingtonSeattleUSA
  3. 3.Nicholas School of the EnvironmentDuke UniversityDurhamUSA
  4. 4.Section of Conservation Biology, Department of Environmental SciencesUniversity of BaselBaselSwitzerland
  5. 5.Department of Ecology and Evolutionary BiologyUniversity of TorontoTorontoCanada

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