Hydrobiologia

, Volume 719, Issue 1, pp 383–425

The effects of land use changes on streams and rivers in mediterranean climates

Authors

    • Department of Ecology, Evolution and Marine BiologyUniversity of California
  • P. Sam Lake
    • Australian Centre for Biodiversity, School of Biological SciencesMonash University
  • Sergi Sabater
    • Institute of Aquatic EcologyUniversity of Girona
    • Catalan Institute for Water Research (ICRA)
  • John M. Melack
    • Department of Ecology, Evolution and Marine BiologyUniversity of California
  • John L. Sabo
    • School of Life SciencesArizona State University
MEDITERRANEAN CLIMATE STREAMS Review Paper

DOI: 10.1007/s10750-012-1333-4

Cite this article as:
Cooper, S.D., Lake, P.S., Sabater, S. et al. Hydrobiologia (2013) 719: 383. doi:10.1007/s10750-012-1333-4

Abstract

We reviewed the literature on the effects of land use changes on mediterranean river ecosystems (med-rivers) to provide a foundation and directions for future research on catchment management during times of rapid human population growth and climate change. Seasonal human demand for water in mediterranean climate regions (med-regions) is high, leading to intense competition for water with riverine communities often containing many endemic species. The responses of river communities to human alterations of land use, vegetation, hydrological, and hydrochemical conditions are similar in mediterranean and other climatic regions. High variation in hydrological regimes in med-regions, however, tends to exacerbate the magnitude of these responses. For example, land use changes promote longer dry season flows, concentrating contaminants, allowing the accumulation of detritus, algae, and plants, and fostering higher temperatures and lower dissolved oxygen levels, all of which may extirpate sensitive native species. Exotic species often thrive in med-rivers altered by human activity, further homogenizing river communities worldwide. We recommend that future research rigorously evaluate the effects of management and restoration practices on river ecosystems, delineate the cause–effect pathways leading from human perturbations to stream biological communities, and incorporate analyses of the effects of scale, land use heterogeneity, and high temporal hydrological variability on stream communities.

Keywords

Mediterranean riversStreamsLand useEcosystems

Copyright information

© Springer Science+Business Media Dordrecht 2012