AUTHOR=Johnson Matthew D. , Moeller Holly V. TITLE=Editorial: Mixotrophy in Protists: From Model Systems to Mathematical Models JOURNAL=Frontiers in Marine Science VOLUME=5 YEAR=2018 URL=https://www.frontiersin.org/journals/marine-science/articles/10.3389/fmars.2018.00490 DOI=10.3389/fmars.2018.00490 ISSN=2296-7745