Future trajectories of peatland permafrost under climate and ecosystem change in northeastern Canada DOI
Yifeng Wang, Robert G. Way

Authorea (Authorea), Journal Year: 2024, Volume and Issue: unknown

Published: July 24, 2024

Peatland permafrost ecosystems include culturally and ecologically important habitat for plants wildlife. Widespread degradation of palsas peat plateaus suggests vulnerability these landforms to climate warming, but ecosystem changes, including landscape greening due shrub expansion related changes in snow distribution, are also expected impact persistence. In this study, the Northern Ecosystem Soil Temperature model is used simulate future ground temperature trajectories nine peatland along Labrador Sea coastline. Ground temperatures modeled each site from 2024 2100 under six scenarios, which account differences land cover, snow, warming (RCP4.5). All scenarios incorporating a change characteristics or result total loss at all sites by 2100, with some experiencing 2036. Although thaw occurs most study exhibit wide variations rates latitude, geomorphological characteristics, initial thicknesses. While experience active layer thickening, four see development supra-permafrost taliks, almost exclusively that incorporate change. The taliks earlier suggest coastal may be more sensitive than alone. These results provide insights into evolution sensitivity peatlands discontinuous zone.

Language: Английский

Future Trajectories of Peatland Permafrost Under Climate and Ecosystem Change in Northeastern Canada DOI Creative Commons
Yifeng Wang, Robert G. Way

Journal of Geophysical Research Earth Surface, Journal Year: 2025, Volume and Issue: 130(2)

Published: Feb. 1, 2025

Abstract Peatland permafrost ecosystems include culturally and ecologically important habitats for plants wildlife. Widespread degradation of palsas peat plateaus suggests vulnerability these landforms to climate warming, but ecosystem changes, including landscape greening due shrub expansion related changes in snow distribution, are also expected impact persistence. In this study, a process‐based one‐dimensional transient model is used simulate an ensemble future ground temperature trajectories seven palsa two plateau study sites along the Labrador Sea coastline. Ground temperatures modeled from 2024 2100 under nine scenarios, which account differences land cover, snow, warming (RCP4.5 RCP8.5). All scenarios incorporating change characteristics and/or result loss at all by 2100, with some experiencing 2036. Although thaw occurs most exhibit wide variations rates latitude, geomorphological characteristics, initial thicknesses. Most experience active layer thickening, four see development supra‐permafrost taliks, though almost exclusively that incorporate change. The taliks earlier suggest peatland coastal may be more sensitive than alone. These results provide insights into evolution sensitivity peatlands discontinuous zone.

Language: Английский

Citations

1
A climate adaptation menu for North American grasslands DOI Creative Commons
Jacy Bernath‐Plaisted, Stephen D. Handler, Marissa Ahlering

et al.

Conservation Science and Practice, Journal Year: 2025, Volume and Issue: unknown

Published: March 17, 2025

Abstract North American grasslands are climate‐vulnerable biomes that provide critical ecosystem services and support biodiversity. However, often not included in climate policy treaties, they underrepresented ecological climate‐adaptation literature. We synthesized existing knowledge on adaptation to resources guidance for grassland managers facing increasing change impacts. leveraged data from a systematic review solicited input management professionals at workshops create Grassland Adaptation Menu—a referenced, hierarchical list of specific tactics nested under broader strategies. Our revealed although the number published studies examining grassland‐climate topics is increasing, relatively few actionable recommendations adaptation. Among did make recommendations, landscape‐planning principles such as conserving future refugia enhancing connectivity were most frequently recommended practice types, but there also suggestions site‐level adjustments fire grazing, improved seed sourcing restoration practices, increased heterogeneity biodiversity, use assisted migration, microclimate conditions. The Menu incorporates eight general strategies 32 approaches structured format designed help translate concepts into actions.

Language: Английский

Citations

0
Monitoring ‘frozen commons’ with MODIS in Google Earth Engine DOI

Pauline Mnev,

Kelsey E. Nyland

Polar Geography, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 16

Published: April 8, 2025

Language: Английский

Citations

0
Future trajectories of peatland permafrost under climate and ecosystem change in northeastern Canada DOI
Yifeng Wang, Robert G. Way

Authorea (Authorea), Journal Year: 2024, Volume and Issue: unknown

Published: July 24, 2024

Peatland permafrost ecosystems include culturally and ecologically important habitat for plants wildlife. Widespread degradation of palsas peat plateaus suggests vulnerability these landforms to climate warming, but ecosystem changes, including landscape greening due shrub expansion related changes in snow distribution, are also expected impact persistence. In this study, the Northern Ecosystem Soil Temperature model is used simulate future ground temperature trajectories nine peatland along Labrador Sea coastline. Ground temperatures modeled each site from 2024 2100 under six scenarios, which account differences land cover, snow, warming (RCP4.5). All scenarios incorporating a change characteristics or result total loss at all sites by 2100, with some experiencing 2036. Although thaw occurs most study exhibit wide variations rates latitude, geomorphological characteristics, initial thicknesses. While experience active layer thickening, four see development supra-permafrost taliks, almost exclusively that incorporate change. The taliks earlier suggest coastal may be more sensitive than alone. These results provide insights into evolution sensitivity peatlands discontinuous zone.

Language: Английский

Citations

0