Contribution of organic toxicants to multiple stress in river ecosystems

Summary River ecosystems are threatened by multiple stressors, including habitat degradation, pollution and invasive species. However, freshwater ecologists have largely disregarded the contribution of toxicants to stress in rivers, whereas ecotoxicologists have primarily examined toxicant effects in artificial systems. As a result, there is a paucity of information on the co‐occurrence of organic toxicants with other stressors and on the...