AUTHOR=Chen Yangjun , Zhang Xingzhou , Yang Yuanyuan , Chen Min TITLE=Natural abundance isotope techniques offer a key to better deciphering the impact of microplastics on the nitrogen cycle JOURNAL=Frontiers in Marine Science VOLUME=12 YEAR=2025 URL=https://www.frontiersin.org/journals/marine-science/articles/10.3389/fmars.2025.1518631 DOI=10.3389/fmars.2025.1518631 ISSN=2296-7745