Microbial communities and biogeochemical functioning across peatlands in the Athabasca Oil Sands region of Canada: Implications for reclamation and management
Journal article
Shaun M Allingham, Felix C Nwaishi, Roxane Andersen, Louis J Lamit and Elliott, D. 2022. Microbial communities and biogeochemical functioning across peatlands in the Athabasca Oil Sands region of Canada: Implications for reclamation and management. Land Degradation & Development. pp. 1-18. https://doi.org/10.1002/ldr.4549
| Authors | Shaun M Allingham, Felix C Nwaishi, Roxane Andersen, Louis J Lamit and Elliott, D. |
|---|---|
| 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. |
| Keywords | Peatlands ; Global biogeochemical cycles; Microbial functioning |
| Year | 2022 |
| Journal | Land Degradation & Development |
| Journal citation | pp. 1-18 |
| Publisher | Wiley |
| ISSN | 1099-145X |
| Digital Object Identifier (DOI) | https://doi.org/10.1002/ldr.4549 |
| Web address (URL) | https://doi.org/10.1002/ldr.4549 |
| Output status | Published |
| Publication dates | 24 Nov 2022 |
| Publication process dates | |
| Deposited | 17 Feb 2023 |
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