PeerJ Author & Reviewer 150 Points Contributions by role Author 100 Reviewer 50 Contributions by subject area Soil Science Climate Change Biology Environmental Sciences Microbiology Ecotoxicology Agricultural Science Ecology Mycology Xi-En Long PeerJ Author & Reviewer Summary Ecotoxicology Environmental Sciences Microbiology Soil Science PeerJ Contributions Articles 1 January 17, 2019 Effects of nickel and cobalt on methane production and methanogen abundance and diversity in paddy soil Tianwei Wang, Zhaoxia Li, Xueping Chen, Xi-En Long https://doi.org/10.7717/peerj.6274 PubMed 30671309