Browsing Geography and Environmental Management by Author "Strack, Maria"
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Access roads impact enzyme activities in boreal forested peatlands
Saraswati, Saraswati; Parsons, Christopher T.; Strack, Maria (Elsevier, 2019-02-15)We investigated the impacts of resource access roads on soil enzyme activities in contrasting forested boreal peatlands (bog and fen). In August 2016, a total of 72 peat samples were collected from twelve 20 m long transects ... -
Annual carbon balance of a peatland 10 yr following restoration
Strack, Maria; Zuback, Yoseph (Copernicus Publications, 2013-05-02)Undisturbed peatlands represent long-term net sinks of carbon; however, peat extraction converts these systems into large and persistent sources of greenhouse gases. Although rewetting and restoration following peat ... -
Carbon dioxide flux and net primary production of a boreal treed bog: Responses to warming and water-table-lowering simulations of climate change
Munir, T. M.; Perkins, M.; Kaing, E.; Strack, Maria (European Geosciences Union, 2015-02-20)Midlatitude treed bogs represent significant carbon (C) stocks and are highly sensitive to global climate change. In a dry continental treed bog, we compared three sites: control, recent (1–3 years; experimental) and older ... -
Controls on plot-scale growing season CO2 and CH4 fluxes in restored peatlands: Do they differ from unrestored and natural sites?
Strack, Maria; Cagampan, J.; Hassanpour Fard, G. (International Peatland Society (IPS) and the International Mire Conservation Group (IMCG) - Jointly published, 2016-06-14)This study brings together plot-scale growing season fluxes of carbon dioxide (CO2) and methane (CH4) from six Canadian peatlands restored by the moss layer transfer technique (MLTT) and compares them with fluxes from ... -
The effect of peat structure on the spatial distribution of biogenic gases within bogs: EFFECT OF PEAT STRUCTURE ON BIOGENIC GAS
Comas, Xavier; Kettridge, Nicholas; Binley, Andrew; Slater, Lee; Parsekian, Andrew; Baird, Andy J.; Strack, Maria; Waddington, James M. (Wiley, 2014-10-30)Northern peatlands are a large source of atmospheric methane (CH4) and both a source and a sink of atmospheric carbon dioxide (CO2). The rate and temporal variability in gas exchanges with peat soils is directly related ... -
Effect of Plant Functional Type on Methane Dynamics in a Restored Minerotrophic Peatland
Strack, Maria; Mwakanyamale, Kisa; Fard, Golnoush Hassanpour; Bird, Melanie; Bérubé, Vicky; Rochefort, Line (Springer, 2017-01)Background and Aims: Peatland methane (CH4) fluxes may vary between plant types; however, in mixed communities, the specific role of each species is difficult to distinguish. The goal of this study was to determine the ... -
Effect of water table drawdown on northern peatland methane dynamics: Implications for climate change
Strack, Maria; Waddington, James M.; Tuittila, Eeva-Stiina (Wiley, 2004-10-07)As natural sources of methane (CH4), peatlands play an important role in the global carbon cycle. Climate models predict that evapotranspiration will increase under a 2 x CO2 scenario due to increased temperatures leading ... -
The effects of Eriophorum vaginatum on N2O fluxes at a restored, extracted peatland
Brummell, Martin; Lazcano, Cristina; Strack, Maria (Elsevier, 2017-09)Restoration of extracted horticultural peatlands commonly includes distribution of vegetation and propagules from 10 nearby undisturbed sites over the recently-exposed surface. The resulting growth includes both mosses and ... -
Greenhouse gas emission factors associated with rewetting of organic soils
Wilson, D.; Blain, D.; Couwenberg, J.; Evans, C.D.; Murdiyarso, D.; Page, S.E.; Renou-Wilson, F.; Rieley, J.O.; Strack, Maria; Tuittila, E.S. (International Peatland Society (IPS) and the International Mire Conservation Group (IMCG), 2016-04-08)Drained organic soils are a significant source of greenhouse gas (GHG) emissions to the atmosphere. Rewetting these soils may reduce GHG emissions and could also create suitable conditions for return of the carbon (C) sink ... -
The influence of peat volume change and vegetation on the hydrology of a kettle-hole wetland in Southern Ontario, Canada
Whittington, Pete; Strack, Maria; van Haarlem, R; Kaufman, S; Stoesser, P; Maltez, J; Price, Jonathan S.; Stone, Mike (International Mire Conservation Group and International Peat Society, 2007-12)Links between local hydrology and vegetation type exist in wetlands, yet it is unclear what role peat volume change plays in these interactions. We measured peat volume change and hydraulic conductivity (Kfield) at three ... -
Natural climate solutions for Canda
Drever, C Ronnie; Cook-Patton, Susan C; Akhter, Fardausi; Badiou, Pascal H; Chmura, Gail L; Davidson, Scott J; Desjardins, Raymond L; Dyk, Andrew; Fargione, Joseph E; Fellows, Max; Filewood, Ben; Hessing-Lewis, Margot; Jayasundara, Susantha; Keeton, William S; Kroeger, Timm; Lark, Tyler J; Le, Edward; Leavitt, Sara M; LeClerc, Marie-Eve; Lempriere, Tony C; Metsaranta, Juha; McConkey, Brian; Neilson, Eric; St-Laurent, Guillaume Peterson; Puric-Mladenovic, Danijela; Rodrigue, Sebastien; Soolanayakanahally, Raju Y; Spawn, Seth A; Strack, Maria; Smyth, Carolyn; Thevathasan, Naresh; Voicu, Mihai; Williams, Christopher A; Woodbury, Peter B; Worth, Devon E; Xu, Zhen; Yeo, Samantha; Kurz, Werner A (American Association for the Advancement of Science, 2021-06-04)Alongside the steep reductions needed in fossil fuel emissions, natural climate solutions (NCS) represent readily deployable options that can contribute to Canada’s goals for emission reductions. We estimate the mitigation ... -
Responses of carbon dioxide flux and plant biomass to water table drawdown in a treed peatland in northern Alberta: a climate change perspective
Munir, T. M.; Xu, B.; Perkins, M.; Strack, Maria (European Geosciences Union, 2014-02-11)Northern peatland ecosystems represent large carbon (C) stocks that are susceptible to changes such as accelerated mineralization due to water table lowering expected under a climate change scenario. During the growing ...