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

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Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision
ED: Reconsider after major revisions (22 Feb 2018) by Paul Stoy
AR by Tim Duval on behalf of the Authors (29 Mar 2018)  Author's response    Manuscript
ED: Referee Nomination & Report Request started (06 Apr 2018) by Paul Stoy
RR by Anonymous Referee #3 (31 May 2018)
ED: Publish subject to minor revisions (review by editor) (01 Jun 2018) by Paul Stoy
AR by Tim Duval on behalf of the Authors (10 Jun 2018)  Author's response    Manuscript
ED: Publish as is (13 Jun 2018) by Paul Stoy
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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.
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