The role of cotton-grass (Eriophorum vaginatum) in the exchange of CO2and CH4at two restored peatlands, eastern Canada

Marinier, Michèle; Glatzel, Stephan; Moore, Tim R.

doi:10.1080/11956860.2004.11682818

Cited by 60 publications

(44 citation statements)

References 28 publications

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“…This finding has been reported on cutover peatlands in Canada (e.g. Marinier et al 2004;McNeil and Waddington 2003) and agrees with shorter duration research work on the Bleaklow Plateau (e.g. Worrall et al 2011).…”

Section: Carbon Dioxide Fluxessupporting

confidence: 79%

Restoration effects on water table depths and CO2 fluxes from climatically marginal blanket bog

et al. 2013

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This study aimed to measure the effects of ecological restoration on blanket peat water in and around the gullies investigated whereas a blocked gully has water table depths comparable to a naturally revegetating gully. A 10 cm lowering in water table depth decreases the probability of observing a net CO2 sink, on a given site, by up to 30 %. The most i mportant conclusion of this research was that restoration interventions are effective at increasing the likelihood of net CO2 sink behaviour and raising water tables on degraded, climatically marginal blanket bog.

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Section: Carbon Dioxide Fluxessupporting

confidence: 79%

Restoration effects on water table depths and CO2 fluxes from climatically marginal blanket bog

et al. 2013

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“…The formation of Sphagnum peat or development of herbaceous vegetation support the production of CH 4 by providing a good supply of labile carbon compounds needed for methanogenesis , Marinier et al 2004, Waddington and Day 2007. Our study indicates that longer time scales than over 10-12 years may be required to restore the pristine-like CH 4 -cycling microbial processes in rewetted peatland buffers.…”

Section: The Effect Of Restoration On the Emissions Of Chmentioning

confidence: 84%

Use of wetland buffer areas to reduce nitrogen transport from forested catchments: Retention capacity, emissions of N2O and CH4 and vegetation composition dynamics

Hynninen¹

2011

Diss. For.

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“…CO 2 exchange in these ecosystems has been correlated to DOC concentration (Glatzel et al, 2003). DOC export did not decrease following the restoration of extracted peatlands but CH 4 flux increased after restoration due to both the supply of labile carbon and the enhanced CH 4 transport from vascular plants (Marinier et al, 2004;Waddington and Day, 2007).…”

Section: Carbon Cycling and Ecohydrologymentioning

confidence: 99%

Advances in Canadian Peatland Hydrology, 2003-2007

Waddington¹,

Quinton²,

Price³

et al. 2009

Canadian Water Resources Journal

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Abstract:Peatlands represent over 90% of Canadian wetlands and are the focus of considerable hydrological and biogeochemical research. Research on evapotranspiration (ET) has shown that it can exceed annual precipitation (P) where there are replenishing flood events. Evaporation from open water ponds in boreal peatlands exceeds ET from vegetated riparian zones by about two times, but surrounding forests can shelter small ponds by reducing turbulence. In an open bog, evaporation was modelled by separating the surface into vascular vegetation, hummock moss and hollow moss surfaces, and showed that vascular plants contribute 60-80% of ET, mosses making up the remainder with hummock mosses dominant over hollows. Runoff from peatlands is enhanced by features ranging from headwater swamps, ice-cored peat plateaus, patchy arctic wetlands and even sections of riverine peatlands. Groundwater fluxes can be quite erratic, and depend on transient properties of the peat that depend on moisture content (e.g., unsaturated hydraulic conductivity) to unsteady saturated hydraulic properties (e.g., hydraulic conductivity, specific yield) caused by peat compression and dilation associated with water storage changes. Surface elevation adjustments can result in a more stable depth to water table, increase evaporation losses, increase methane emission, and attenuate pore-water concentration of contaminants. Research on Canadian peatlands has also made significant methodological advances, including measurement of hydraulic properties of living mosses and peat pore-water and pore dimension characteristics. A considerable multi-annual effort has also been made in evaluating carbon dynamics from Canadian peatlands. Summer moisture availability is important to determining carbon fluxes with some peatlands experiencing enhanced productivity following drought (water table drawdown). Sudden changes in water table elevation promote DOC production and export. Methane bubbles confound hydraulic gradients and flows by creating local pockets of pressure, which are then released episodically when the entrapped gas reaches a threshold content. Canadian peatland hydrology continues to be actively researched in lab, field and modelling studies.

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The role of cotton-grass (Eriophorum vaginatum) in the exchange of CO₂and CH₄at two restored peatlands, eastern Canada

Cited by 60 publications

References 28 publications

Restoration effects on water table depths and CO2 fluxes from climatically marginal blanket bog

Restoration effects on water table depths and CO2 fluxes from climatically marginal blanket bog

Use of wetland buffer areas to reduce nitrogen transport from forested catchments: Retention capacity, emissions of N2O and CH4 and vegetation composition dynamics

Advances in Canadian Peatland Hydrology, 2003-2007

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