Hydrobiologia

, Volume 744, Issue 1, pp 235–254

Impact of climate change on the structure of fish assemblages in European rivers

  • Florian Pletterbauer
  • Andreas H. Melcher
  • Teresa Ferreira
  • Stefan Schmutz
Primary Research Paper

DOI: 10.1007/s10750-014-2079-y

Cite this article as:
Pletterbauer, F., Melcher, A.H., Ferreira, T. et al. Hydrobiologia (2015) 744: 235. doi:10.1007/s10750-014-2079-y

Abstract

Fish assemblage structures show non-random patterns along the longitudinal gradient of rivers. We analysed the impact of climate change on riverine fish assemblages using the Fish Zone Index—a structural index reflecting these conditions. The dataset contained 92 fish species at 559 sampling sites spread over 14 European countries. We regressed the Fish Zone Index in a hierarchical modelling framework with independent variables describing river characteristics and climate conditions. Future changes were predicted according to three future emission scenarios (A1b, A2, and B1) and two time periods (2050s, and 2080s). The final model contained seven independent variables (river slope, size of upstream catchment, wetted width, elevation, maximum temperature of warmest month, mean temperature of warmest quarter of the year in the upstream catchment, and temperature range) and showed highly satisfactory performance (adjR2 > 0.6). The mean increase of the Fish Zone Index was between 0.25 and 0.36 for the 2050s and between 0.36 and 0.41 in the 2080s. Maximum values reached levels of 0.92 and 1.18, respectively, for the two time periods. Major changes of fish assemblages were found in mediterranean as well as in small rivers highlighting the need of timely conservation management.

Keywords

Fish zonation FiZI Global change Temperature Precipitation Streams EU 

Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  • Florian Pletterbauer
    • 1
  • Andreas H. Melcher
    • 1
  • Teresa Ferreira
    • 2
  • Stefan Schmutz
    • 1
  1. 1.Institute of Hydrobiology and Aquatic Ecosystem ManagementUniversity of Natural Resources and Life Sciences ViennaViennaAustria
  2. 2.Forest Research CenterTechnical University of LisbonLisbonPortugal

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