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Differences in CO2 dynamics between successional mire plant communities during wet and dry summers

2011; Wiley; Volume: 22; Issue: 2 Linguagem: Inglês

10.1111/j.1654-1103.2011.01259.x

1654-1103

Mirva Leppälä, Anna Laine, Marja-Liisa Seväkivi, Eeva‐Stiina Tuittila,

Coastal wetland ecosystem dynamics

Journal of Vegetation ScienceVolume 22, Issue 2 p. 357-366 Differences in CO2 dynamics between successional mire plant communities during wet and dry summers Mirva Leppälä, Mirva Leppälä Finnish Forest Research Institute, FI-91500 Muhos, FinlandSearch for more papers by this authorAnna M. Laine, Anna M. Laine Department of Biology, University of Oulu, BOX 3000, FI-91004 Oulu, FinlandSearch for more papers by this authorMarja-Liisa Seväkivi, Marja-Liisa Seväkivi Kainuu Regional Environment Centre, FI-87101 Kajaani, FinlandSearch for more papers by this authorEeva-Stiina Tuittila, Eeva-Stiina Tuittila Peatland Ecology Group, Department of Forest Science, University of Helsinki, BOX 27, FI-00014 Helsinki, FinlandSearch for more papers by this author Mirva Leppälä, Mirva Leppälä Finnish Forest Research Institute, FI-91500 Muhos, FinlandSearch for more papers by this authorAnna M. Laine, Anna M. Laine Department of Biology, University of Oulu, BOX 3000, FI-91004 Oulu, FinlandSearch for more papers by this authorMarja-Liisa Seväkivi, Marja-Liisa Seväkivi Kainuu Regional Environment Centre, FI-87101 Kajaani, FinlandSearch for more papers by this authorEeva-Stiina Tuittila, Eeva-Stiina Tuittila Peatland Ecology Group, Department of Forest Science, University of Helsinki, BOX 27, FI-00014 Helsinki, FinlandSearch for more papers by this author First published: 11 February 2011 https://doi.org/10.1111/j.1654-1103.2011.01259.xCitations: 20 Tuittila, E.-S. (corresponding author, eevastiina.tuittila@helsinki.fi) Peatland Ecology Group, Department of Forest Science, University of Helsinki, BOX 27, FI-00014 Helsinki, FinlandLeppälä, M. (mirva.leppala@metsa.fi): Finnish Forest Research Institute, FI-91500 Muhos, FinlandLaine, A. (anna.laine@oulu.fi): Department of Biology, University of Oulu, BOX 3000, FI-91004 Oulu, FinlandSeväkivi, M.-L. (ml.sevakivi@luukku.com): Kainuu Regional Environment Centre, FI-87101 Kajaani, Finland. Co-ordinating Editor: Helge Bruelheide Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Abstract Questions: What impact do a wet and a dry growing season have on CO2 dynamics of mire plant communities along a primary succession gradient from the initiation stage to the bog stage? Location: Mires on a land uplift coast, Finland. Methods: We measured CO2 dynamics and vascular plant green area development on five mires that form a sequence of mire succession. TWINSPAN was used to define successional mire plant communities and regression analyses were used to explore the temporal variation in CO2 dynamics of the communities. Results: CO2 dynamics of successional plant communities reacted differently to a wet and a dry growing season. The net CO2 uptake rate of the earlier successional communities decreased in the dry growing season due to a decrease in photosynthesizing leaf area. Concurrently, CO2 uptake of the later successional communities moderately increased or did not change. Generally, the difference in net ecosystem exchange (NEE) between a dry and a wet year resulted from the altered rate of gross photosynthesis (PG) rather than ecosystem respiration (RE). Conclusions: Critical factors for the more stable carbon (C) gas dynamics in the later stages of mire succession were (1) higher autogenic control of the physical environment and (2) an increase in the number of factors regulating the PG rate. These factors may buffer mire ecosystems (in terms of the C sink function) from extreme and unfavourable variations in environmental conditions. Citing Literature Volume22, Issue2April 2011Pages 357-366 RelatedInformation