1. Carbon dioxide dynamics of a restored maritime peatland
- Author
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Jukka Laine, Edward P. Farrell, Eeva-Stiina Tuittila, David Wilson, Kenneth A. Byrne, and Jukka Alm
- Subjects
Peat ,Ecology ,biology ,Carex rostrata ,15. Life on land ,Phalaris arundinacea ,biology.organism_classification ,Agronomy ,13. Climate action ,Photosynthetically active radiation ,Juncus ,Environmental science ,Eriophorum angustifolium ,Ecosystem respiration ,Ecology, Evolution, Behavior and Systematics ,Holcus lanatus - Abstract
The restoration of cutaway peatlands provides an opportunity to return the carbon (C) sink function and to examine the influence of climate on peat formation and C accumulation. We studied CO2 exchange dynamics in 2002 and 2003 at a rewetted cutaway peatland located within the temperate maritime climatic zone. Gross photosynthesis (PG), ecosystem respiration (RTOT), and net ecosystem exchange (NEE) were observed in a range of microsites representing a hydroseral succession gradient: Typha latifolia – Phalaris arundinacea, Eriophorum angustifolium – Carex rostrata, and Juncus effusus – Holcus lanatus vegetation communities and areas of bare (unvegetated) peat. Annual rainfall was 26% higher in 2002 and 4% lower in 2003 than the long-term average and influenced water table position at all microsites. Observed instantaneous CO2 fluxes varied temporally and spatially at all microsites. Modelled PG was strongly dependent on irradiation (Photosynthetically Active Radiation) and the Vascular Green Area ...
- Published
- 2007
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