Articles | Volume 15, issue 13
Biogeosciences, 15, 3937–3951, 2018
https://doi.org/10.5194/bg-15-3937-2018
Biogeosciences, 15, 3937–3951, 2018
https://doi.org/10.5194/bg-15-3937-2018

Research article 02 Jul 2018

Research article | 02 Jul 2018

Response of hydrology and CO2 flux to experimentally altered rainfall frequency in a temperate poor fen, southern Ontario, Canada

Danielle D. Radu and Tim P. Duval

Related subject area

Biogeochemistry: Wetlands
Factors controlling Carex brevicuspis leaf litter decomposition and its contribution to surface soil organic carbon pool at different water levels
Lianlian Zhu, Zhengmiao Deng, Yonghong Xie, Xu Li, Feng Li, Xinsheng Chen, Yeai Zou, Chengyi Zhang, and Wei Wang
Biogeosciences, 18, 1–11, https://doi.org/10.5194/bg-18-1-2021,https://doi.org/10.5194/bg-18-1-2021, 2021
Short summary
Exploring constraints on a wetland methane emission ensemble (WetCHARTs) using GOSAT observations
Robert J. Parker, Chris Wilson, A. Anthony Bloom, Edward Comyn-Platt, Garry Hayman, Joe McNorton, Hartmut Boesch, and Martyn P. Chipperfield
Biogeosciences, 17, 5669–5691, https://doi.org/10.5194/bg-17-5669-2020,https://doi.org/10.5194/bg-17-5669-2020, 2020
Short summary
Global peatland area and carbon dynamics from the Last Glacial Maximum to the present – a process-based model investigation
Jurek Müller and Fortunat Joos
Biogeosciences, 17, 5285–5308, https://doi.org/10.5194/bg-17-5285-2020,https://doi.org/10.5194/bg-17-5285-2020, 2020
Short summary
Vascular plants affect properties and decomposition of moss-dominated peat, particularly at elevated temperatures
Lilli Zeh, Marie Theresa Igel, Judith Schellekens, Juul Limpens, Luca Bragazza, and Karsten Kalbitz
Biogeosciences, 17, 4797–4813, https://doi.org/10.5194/bg-17-4797-2020,https://doi.org/10.5194/bg-17-4797-2020, 2020
Denitrification and associated nitrous oxide and carbon dioxide emissions from the Amazonian wetlands
Jérémy Guilhen, Ahmad Al Bitar, Sabine Sauvage, Marie Parrens, Jean-Michel Martinez, Gwenael Abril, Patricia Moreira-Turcq, and José-Miguel Sánchez-Pérez
Biogeosciences, 17, 4297–4311, https://doi.org/10.5194/bg-17-4297-2020,https://doi.org/10.5194/bg-17-4297-2020, 2020
Short summary

Cited articles

Adkinson, A. C. and Humphreys, E. R.: The response of carbon dioxide exchange to manipulations of Sphagnum water content in an ombrotrophic bog, Ecohydrology, 4, 733–743, https://doi.org/10.1002/eco.171, 2011. 
Admiral, S. W. and P. M. Lafleur.: Partitioning of latent heat flux at a northern peatland, Aquat. Botany, 86, 107–116, https://doi.org/10.1016/j.aquabot.2006.09.006, 2007. 
Alm, J., Schulman, L., Walden, J., Nykanen, H., Martikainen, P. J., and Silvola, J.: Carbon balance of a boreal bog within a year with an exceptionally dry summer, Ecology, 80, 161–174, https://doi.org/10.1890/0012-9658(1999)080[0161:CBOABB]2.0.CO;2, 1999. 
Bragazza, L., Parisod, J., Buttler, A., and Bardgett, R. D.: Biogeochemical plant-soil microbe feedback in response to climate warming in peatlands, Nat. Clim. Change, 3, 273–277, https://doi.org/10.1038/NCLIMATE1781, 2013. 
Burwasser, C. J.: Quaternary geology of the collingwood-nottawasaga area, southern ontario; ontario div. mines, prelim, Map P. 919 Geol. Ser., scale 1:50,000, 1974. 
Download
Short summary
Climate change can shift rainfall into fewer, more intense events with longer dry periods, leading to changes in peatland hydrology and carbon cycling. We manipulated rain events over three peatland plant types (moss, sedge, and shrub). We found increasing regime intensity led to drier surface soils and deeper water tables, reducing plant carbon uptake. Mosses became sources of CO2 after >3 consecutive dry days. This study shows peatlands may become smaller sinks for carbon due to rain changes.
Altmetrics
Final-revised paper
Preprint