Microbial communities and biogeochemical functioning across peatlands in the Athabasca Oil Sands region of Canada: Implications for reclamation and management

TitleMicrobial communities and biogeochemical functioning across peatlands in the Athabasca Oil Sands region of Canada: Implications for reclamation and management
Publication TypeJournal Article
Year of Publication2023
AuthorsAllingham S.M, Nwaishi F.C, Andersen R., Lamit L.J, Elliott D.R
JournalLand Degradation & Development
Volume34
Pagination1504-1521
Date PublishedMar
Type of ArticleArticle
ISBN Number1085-3278
Accession NumberWOS:000903675700001
KeywordsAgriculture, alberta, biogeochemical cycles, carbon, communities, diversity, ecosystem functionality, Environmental Sciences & Ecology, fen, Forest soil, Fungal, microbial community, organic-matter, peatlands, PH, physiological profiles, reclamation, soil bacterial community
Abstract

Peatlands play an important role in global biogeochemical cycles and are essential for multiple ecosystem functions. Understanding the environmental drivers of microbial functioning and community structure can provide insights to enable effective and evidence-based management. However, it remains largely unknown how microbial diversity contributes to the functioning of belowground processes. Addressing this gap in knowledge will provide a better understanding of microbial-mediated processes in peatlands that are undergoing restoration or reclamation. This study assessed the changes in microbial community diversity and structure as well as soil function by measuring microbial respiration on a range of substrates from three natural fen types found in the Athabasca Oil Sands region of Alberta, Canada (a poor fen, a hypersaline fen, and a tree-rich fen) and a nearby constructed fen undergoing reclamation following open pit mining. Overall, substrate induced respiration was significantly higher in the constructed fen. Alpha diversity of fungi and prokaryotes was highest in the tree-rich fen, and the composition of microbial communities was significantly different between fens. Both fungal and prokaryotic communities were strongly related to pore water pH and temperature, with plant richness also contributing to the shape of fungal communities. In summary, microbial community structure reflects the underlying differences in soil condition across different fens but plays essential roles in the ecological functions of soil. These findings provide a new outlook for the management of peatlands undergoing post-mining reclamation. Future research on peatland reclamation should consider the dynamic interaction between communities and ecosystem functionality, for which this study forms a useful baseline.

Short TitleLand Degrad. Dev.Land Degrad. Dev.
Alternate JournalLand Degrad. Dev.
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Times Cited: 0
Cited Reference Count: 116
Allingham, Shaun M. Nwaishi, Felix C. Andersen, Roxane Lamit, Louis J. Elliott, David R.
Elliott, David/E-2816-2010
Elliott, David/0000-0001-9837-7890
National Science Foundation; Northern Research Station; US Department of Energy

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