Accepted Preprint This article is protected by copyright. All rights reserved Environmental Toxicology STRUCTURAL AND FUNCTIONAL RESPONSES OF PERIPHYTON AND MACROINVERTEBRATE COMMUNITIES TO FERRIC FE, CU AND ZN IN STREAM MESOCOSMS PETE CADMUS, HELENA GUASCH, ADAM T. HERDRICH, BERTA BONET, GEMMA URREA, and WILLIAM H. CLEMENTS Environ Toxicol Chem., Accepted Article • DOI: 10.1002/etc.4070 Accepted Article "Accepted Articles" are peer-reviewed, accepted manuscripts that have not been edited, formatted, or in any way altered by the authors since acceptance. They are citable by the Digital Object Identifier (DOI). After the manuscript is edited and formatted, it will be removed from the “Accepted Articles” Web site and published as an Early View article. Note that editing may introduce changes to the manuscript text and/or graphics which could affect content, and all legal disclaimers and ethical guidelines that apply to the journal pertain. SETAC cannot be held responsible for errors or consequences arising from the use of information contained in these manuscripts.