La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Effects of ultraviolet radiation and contaminant-related stressors on Arctic freshwater ecosystems
Auteurs :	Frederick J. Wrona, Auteur ; Terry D. Prowse, Auteur ; James D. Reist, Auteur ; John E. Hobbie, Auteur ; Lucie M. J. Levesque, Auteur ; Robie W. Macdonald, Auteur ; Warwick F. Vincent, Auteur
Type de document :	Article
Dans :	AMBIO (35(7) NOV 2006)
Article en page(s) :	388-401
Langues:	Anglais
Résumé :	Climate change is likely to act as a multiple stressor, leading to cumulative and/or synergistic impacts on aquatic systems. Projected increases in temperature and corresponding alterations in precipitation regimes will enhance contaminant influxes to aquatic systems, and independently increase the susceptibility of aquatic organisms to contaminant exposure and effects. The consequences for the biota will in most cases be additive (cumulative) and multiplicative (synergistic). The overall result will be higher contaminant loads and biomagnification in aquatic ecosystems. Changes in stratospheric ozone and corresponding ultraviolet radiation regimes are also expected to produce cumulative and/or synergistic effects on aquatic ecosystem structure and function. Reduced ice cover is likely to have a much greater effect on underwater

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