The short-term effects of management changes on watertable position and nutrients in shallow groundwater in a harvested peatland forest

Finnegan, Joanne; Regan, J.T.; Fenton, Owen; Lanigan, Gary; Brennan, Raymond B.; Healy, Mark G.

doi:10.1016/j.jenvman.2014.04.008

Cited by 10 publications

(6 citation statements)

References 21 publications

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“…) is within the published range from other sites (e.g., Coggins et al 2006;Finnegan et al 2014;Holden et al 2011), as is pH (H 2 O) (3.31-4.07) (e.g., Adamson et al 2001;Clark et al 2005), the C/N quotient (18.8-63.7) (e.g., Clark et al 2005), and loss-onignition (90.1-99.9%) (Adamson et al 2001;Clark et al 2005;Crowe et al 2008;Finnegan et al 2014). As noted above, our study ditches were orientated in a predominantly downslope direction.…”

Section: Field Site and Experimental Setupsupporting

confidence: 59%

Methane and carbon dioxide fluxes from open and blocked ditches in a blanket bog

et al. 2018

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Background and aims There is growing interest in how the rewetting of drained peatlands can restart their carbon (C) sink function. However, there are few studies on the effect of ditch blocking on the within-ditch C balance. For a UK blanket bog we assessed how methane (CH 4 ) emissions, net ecosystem exchange (NEE), and the overall greenhouse gas (GHG) balance expressed as carbon dioxide equivalents (CO 2 -e) responded to ditch blocking. Methods We conducted a fully replicated field trial on a blanket bog in the Upper Conwy catchment, North Wales, UK. Twelve parallel ditches, that ran approximately downslope, were investigated. Four were left open, four had peat dams installed at intervals of a few metres along their length, and four were partially infilled with peat (reprofiled) and dammed. For a period of four years after blocking, we measured peatland-atmosphere fluxes of CH 4 and CO 2 within the ditches. Results CH 4 fluxes, NEE and overall GHG balance (expressed in terms of CO 2 -e) in the experimental area showed no evidence of varying systematically between the different types of ditch treatment (open, dammed, and reprofiled). In addition, there was little evidence that CH 4 fluxes or CO 2 -e balance changed systematically with time since blocking. Conclusions We found no evidence of consistent differences between blocking treatments in terms of CH 4 emissions or overall CO 2 -e balance. There was high spatial and temporal variability in CO 2 and CH 4 fluxes within each treatment. We did not observe a postblocking 'spike' in CH 4 fluxes.

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Section: Field Site and Experimental Setupsupporting

confidence: 59%

Methane and carbon dioxide fluxes from open and blocked ditches in a blanket bog

et al. 2018

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“…Results of this study indicate that after clear-cutting, the GWL generally rises. These findings are like those of Henriksen and Kirkhusmo (2000), Sun et al (2000), Fannin et al (2000), Hariabedain (2011), Slesak et al (2014) and Finnegan et al (2014). indicated that clear-cutting, even on small area of 1 ha, causes the rise of water table.…”

Section: Discussionsupporting

confidence: 75%

“…Therefore, the increase was caused by the lack of forest stands transpiration. Significant increase in the groundwater because of clear-cutting was observed by different authors , Sun et al 2001, Pothier 2003, Hotta et al 2010, Korytowski 2013, Finnegan et al 2014, Stasik and Korytowski 2015.…”

Section: Introductionmentioning

confidence: 89%

Assessment of the impact of clearcutting on groundwater regime in swampy habitats

Stasik¹

2020

BALT FOR

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The aim of the study was evaluation of clearcutting effect on water regime in a tree harvesting area. The results was made on the basis of the study carried out in Rakowski Ditch catchment, in Wielkopolska lowland in Poland. It was found that a more useful method to establish the effects of clearcutting is to is to compare the groundwater table level in the post-clearcutting area with that in a control area than to analyze the groundwater table level changes in the same area before and after the clearcutting. Regression analysis is a particularly useful tool in groundwater regime analyzes. The results obtained in this study indicated that the groundwater regime changes in the post-clearcutting area were manifested as an increase in the average groundwater levels. The major changes in the groundwater table after clearcutting were observed in the minimum levels, while the lowest changes took place in the maximum groundwater levels. The variation in groundwater levels was higher in the period after clearcutting than in the period before it. The analysis of linear regression of groundwater levels in the well located in clearcutting and that in the control area confirmed the change in the groundwater regime in the post-clearcutting area. Stronger relations in the period before clearcutting were observed. Key words: clearcutting, groundwater, forest catchment, swampy habitats

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“…Investigations carried out shortly after the initiation of rewetting processes often exhibited a significant release of NH 4 eN, SRP and DOC (Kiekbusch and Schrautzer, 2007;Zak and Gelbrecht, 2007;Meissner et al, 2008;Finnegan et al, 2014). The authors concluded that these processes enhance eutrophication in water bodies, impairing the surrounding ecosystems.…”

Section: Prevailing Processesmentioning

confidence: 99%

Long-term behavior of groundwater chemistry in a periodically rewetted fen area covered with macrophytes

Maassen

Balla

Dannowski

2015

Journal of Environmental Management

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The short-term effects of management changes on watertable position and nutrients in shallow groundwater in a harvested peatland forest

Cited by 10 publications

References 21 publications

Methane and carbon dioxide fluxes from open and blocked ditches in a blanket bog

Methane and carbon dioxide fluxes from open and blocked ditches in a blanket bog

Assessment of the impact of clearcutting on groundwater regime in swampy habitats

Long-term behavior of groundwater chemistry in a periodically rewetted fen area covered with macrophytes

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