Aquatic Sciences

, 71:279 | Cite as

Implications of biological and physical diversity for resilience and resistance patterns within Highly Dynamic River Systems

  • Eric Tabacchi
  • Johannes Steiger
  • Dov Corenblit
  • Michael T. Monaghan
  • Anne-Marie Planty-Tabacchi
Overview Article

Abstract.

The structure and function of alluvial Highly Dynamic River Systems (HDRS) are driven by highly variable hydrological disturbance regimes, and alternate between resistant, metastable states and resilient, transitional states. These are in turn subject to influences of feedback loops within hydrogeomorphic and biological processes. Here we consider how resistance and resilience largely determine HDRS ecosystem trajectories and how these characteristics can be modified by natural and anthropogenic processes. We review the mechanisms by which biodiversity can affect both resistance and resilience and introduce a conceptual framework that incorporates some unique HDRS characteristics. We suggest that resilient and resistant patterns frequently coexist in the active tract of these river systems, and that this coexistance promotes the return of metastable states after major disturbances. In contrast, highly resistant and poorly resilient patterns dominate at their external boundaries. The loss of these natural dynamics resulting from direct and indirect human impacts causes deviations to resistance and resilience patterns and therefore to HDRS trajectory. We propose that understanding the role of interactions between biological and physical processes that control resistance and resilience is crucial for system restoration and management.

Keywords.

Resilience resistance biodiversity river system fluvial geomorphology ecological community 

Copyright information

© Birkhäuser Verlag, Basel 2009

Authors and Affiliations

  • Eric Tabacchi
    • 1
  • Johannes Steiger
    • 2
  • Dov Corenblit
    • 2
    • 3
  • Michael T. Monaghan
    • 4
  • Anne-Marie Planty-Tabacchi
    • 1
  1. 1.Université de Toulouse III, ECOLAB - Laboratoire d’écologie fonctionnelle, UMR 5245 CNRS/UPS/INPTToulouse Cedex 04France
  2. 2.Clermont Université, GEOLAB - Laboratoire de géographie physique et environnementale, UMR 6042 CNRS/Université Blaise Pascal, Maison des Sciences de l’HommeClermont-Ferrand Cedex 1France
  3. 3.Department of GeographyKing’s College LondonStrand, LondonU.K.
  4. 4.Leibniz-Institute of Freshwater Ecology and Inland Fisheries (IGB)BerlinGermany

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