Why Should We Care about Temporary Waterways?
Acuna, V. ; Datry, T. ; Marshall, J. ; Barcelo, D. ; Dahm, C.N. ; Ginebreda, A. ; McGregor, G. ; Sabater, S. ; Tockner, K. ; Palmer, M.A.
Type de document
Article de revue scientifique à comité de lecture
Affiliation de l'auteur
CATALAN INSTITUTE FOR WATER RESEARCH GIRONA ESP ; IRSTEA LYON UR MALY FRA ; QUEENSLAND DEPARTMENT OF SCIENCE BRISBANE AUS ; CATALAN INSTITUTE FOR WATER RESEARCH GIRONA ESP ; UNIVERSITY OF NEW MEXICO ALBUQUERQUE USA ; INSTITUTE OF ENVIRONMENTAL ASSESSMENT AND WATER RESEARCH SPANISH COUNCIL FOR SCIENTIFIC RESEARCH BARCELONA ESP ; QUEENSLAND DEPARTMENT OF SCIENCE BRISBANE AUS ; CATALAN INSTITUTE FOR WATER RESEARCH GIRONA ESP ; FREIE UNIVERSITAET BERLIN DEU ; UNIVERSITY OF MARYLAND USA
Résumé / Abstract
A proposed ruling by the U.S. Environmental Protection Agency (EPA), aimed at clarifying which bodies of water that flow intermittently are protected under law (1), has provoked conflict between developers and environmental advocates. Some argue that temporary streams and rivers, defined as waterways that cease to flow at some points in space and time along their course (see the figure, left) ( Fig. 1) (2), are essential to the integrity of entire river networks. Others argue that full protection will be too costly. Similar concerns extend far beyond the United States. Debate over how to treat temporary waterways in water-policy frameworks is ongoing (3), particularly because some large permanent rivers are shifting to temporary because of climate change and extraction of water (4). Even without human-induced changes, flow intermittency is part of the natural hydrology for streams and rivers globally.
Science, vol. 343, num. 6175, p. 1080 - 1081