Setting Targets for Wetland Restoration to Mitigate Climate Change Effects on Watershed Hydrology.
How much wetland we should protect or restore is not a simple question, such that conservation targets are often set according to political agendas, then standardized globally. However, given their key regulating hydrological functions, wetlands represent nature-based solutions to the anticipated, e...
| Publicado en: | Environmental Management Vol. 71; no. 2; pp. 365 - 379 |
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| Autores principales: | , , , , , |
| Formato: | Journal Article |
| Publicado: |
Springer Nature
Feb2023
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=161655324&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 161655324 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 0364152X O5H jtl: Environmental Management issn: 0364152X maglogo: N pubinfo: dt: Feb2023 vid: 71 iid: 2 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 161655324 160732299 10.1007/s00267-022-01763-z 161655324 ppf: 365 ppct: 14 formats: fmt: – @attributes: type: T – @attributes: type: P tig: atl: Setting Targets for Wetland Restoration to Mitigate Climate Change Effects on Watershed Hydrology. aug: au: Goyette, Jean-Olivier Savary, Stéphane Blanchette, Marianne Rousseau, Alain N. Pellerin, Stéphanie Poulin, Monique affil: Département de phytologie, Université Laval, Quebec, QC, Canada sug: ab: How much wetland we should protect or restore is not a simple question, such that conservation targets are often set according to political agendas, then standardized globally. However, given their key regulating hydrological functions, wetlands represent nature-based solutions to the anticipated, exacerbating effect of climate change on drought and flood events, which will vary at the regional scale. Here, we propose a science-based approach to establishing regional wetland restoration targets centered on their hydrological functions, using a case study on several sub-watersheds of a northern temperate basin in south-eastern Canada. We posit that restoration targets should minimally mitigate the negative effects of climate change on watershed hydrology, namely peak and low flows. We used a semi-distributed hydrological model, HYDROTEL, to perform a hydroclimatic assessment, including 47 climate projections over the 1979–2099 period, to test the effect of wetland restoration scenarios on peak and low flows. The results showed that hydrological responses to climate change varied among sub-watersheds (even at the scale of a relatively small region), and that, to mitigate these changes, increases in wetland coverage should be between 20% and up to 150%. At low restoration levels, increasing wetland coverage was more effective in attenuating floods than alleviating droughts. This study indicates that a no-net-loss policy is insufficient to maintain current hydrological cycles in the face of climate change; rather, a 'net gain' in wetland cover is needed. pubtype: Academic Journal doctype: Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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