cover image: 5 - Inland Freshwater Ecosystems - 5.1 Opportunities for Enhancing Carbon Sequestration in Freshwater Systems

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5 - Inland Freshwater Ecosystems - 5.1 Opportunities for Enhancing Carbon Sequestration in Freshwater Systems

5 Dec 2022

120 | Council of Canadian Academies Inland Freshwater Ecosystems | Chapter 5 5.3 Magnitude of Sequestration and Emissions Reduction Potential To determine the magnitude of the sequestration potential or emissions reduction potential of a freshwater system, both GHG fluxes and the area of opportunity (i.e., the area over which a practice can feasibly be implemented) must be estimated. [...] In the Panel’s view, the process for assessing the area of opportunity is highly uncertain and dependent on the location of the wetland; the actual area of at-risk wetlands close to expanding urban areas may be higher than accounted for, whereas wetlands in agricultural Council of Canadian Academies | 129 regions may not actually be highly vulnerable to drainage, given their continued existence th. [...] Council of Canadian Academies | 131 5.4.3 Permanence of Carbon in Wetlands Carbon sequestered in freshwater wetlands is vulnerable to climatic change The permanence of carbon stocks in wetlands is a critical consideration for the implementation of wetland NBCSs, since the value of avoided conversion depends on the future ability of those saved wetlands to continue to accumulate or store carbon. [...] different climatic regions and among Given the currently large uncertainty of the rate various hydrological of carbon accumulation in both undisturbed and settings is key to disturbed wetlands, substantial effort would need determining the to be put toward establishing monitoring networks ability of NBCSs to accumulate and store to fully understand the outcome of conservation carbon in the future.. [...] Maintaining and restoring peatlands reduces the risk of wildfires and provides habitat for endangered species The restoration of drained wetlands through re-wetting can reduce the extent of peat fires, which negatively impact air quality and release large amounts of carbon to the atmosphere (Turetsky et al., 2011b; Reddy et al., 2015).
Pages
32
Published in
Canada

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