Preface: Emerging trends in aquatic ecology III.

The special issues of this series are organized by Hydrobiologia editors and at least one of the authors of each paper is a Hydrobiologia editor. The authors identified ecosystem and geographic bias in the literature which focused on ecosystem functions: freshwater received far more attention than marine ecosystems, and Europe and North America have been much more studied than any of the other continents. Also, the majority of studies which claim to study ecosystem functioning actually investigated ecosystem structure, while many studies investigated proxies instead of real functions. Braga et al. ([2]) conducted an experiment in mesocosms to investigate if invasive species impacts on native communities and ecosystem functions are related to synergistic, antagonistic or additive interactions between invasive species. [Extracted from the article]