SwePub
Sök i SwePub databas

  Utökad sökning

Träfflista för sökning "WFRF:(Vonk Jorien E.) ;lar1:(umu)"

Sökning: WFRF:(Vonk Jorien E.) > Umeå universitet

  • Resultat 1-2 av 2
Sortera/gruppera träfflistan
   
NumreringReferensOmslagsbildHitta
1.
  • Abbott, Benjamin W., et al. (författare)
  • Biomass offsets little or none of permafrost carbon release from soils, streams, and wildfire : an expert assessment
  • 2016
  • Ingår i: Environmental Research Letters. - : IOP Publishing. - 1748-9326. ; 11:3
  • Tidskriftsartikel (refereegranskat)abstract
    • As the permafrost region warms, its large organic carbon pool will be increasingly vulnerable to decomposition, combustion, and hydrologic export. Models predict that some portion of this release will be offset by increased production of Arctic and boreal biomass; however, the lack of robust estimates of net carbon balance increases the risk of further overshooting international emissions targets. Precise empirical or model-based assessments of the critical factors driving carbon balance are unlikely in the near future, so to address this gap, we present estimates from 98 permafrost-region experts of the response of biomass, wildfire, and hydrologic carbon flux to climate change. Results suggest that contrary to model projections, total permafrost-region biomass could decrease due to water stress and disturbance, factors that are not adequately incorporated in current models. Assessments indicate that end-of-the-century organic carbon release from Arctic rivers and collapsing coastlines could increase by 75% while carbon loss via burning could increase four-fold. Experts identified water balance, shifts in vegetation community, and permafrost degradation as the key sources of uncertainty in predicting future system response. In combination with previous findings, results suggest the permafrost region will become a carbon source to the atmosphere by 2100 regardless of warming scenario but that 65%-85% of permafrost carbon release can still be avoided if human emissions are actively reduced.
  •  
2.
  • Klaminder, Jonatan, et al. (författare)
  • Lead Contamination of Subarctic Lakes and Its Response to Reduced Atmospheric Fallout : Can the Recovery Process Be Counteracted by the Ongoing Climate Change?
  • 2010
  • Ingår i: Environmental Science and Technology. - : American Chemical Society (ACS). - 0013-936X .- 1520-5851. ; 44:7, s. 2335-2340
  • Tidskriftsartikel (refereegranskat)abstract
    • Can a climate-triggered export of old contaminants from the soil alter the lead (Pb) contaminant burden of subarctic lakes? To address this question, we reconstructed the pollution history of three high latitude lakes situated in a region where a recent climatic shift has occurred. Dated sediment records were used as archives of past Pb inputs to the lakes, where the difference in the Pb-206/Pb-207 ratio between atmospheric contaminants (Pb-206/Pb-207 ratio <1.16) and geogenic Pb in the catchment soil (Pb-206/Pb-207 ratio >1.22) were used to trace fluxes of Pb contaminants. Lead contaminants were found in sediments deposited since Roman times. A significant export of Pb from the soil contaminant pool is indicated in two of the lakes surrounded by near-shore permafrost soils. Here, levels of Pb contaminants and Pb-206/Pb-207 ratios of sediments deposited after the 1970s appear not to have been strongly affected by the >= 90% reduction in atmospheric deposition rates and increasing Pb-206/Pb-207 ratios of atmospheric Pb since the 1990s. We concluded that soil processes stimulated by the ongoing climate change at high latitudes might work counteractive to efforts to reduce contaminant levels in subarctic lakes.
  •  
Skapa referenser, mejla, bekava och länka
  • Resultat 1-2 av 2
Typ av publikation
tidskriftsartikel (2)
Typ av innehåll
refereegranskat (2)
Författare/redaktör
Vonk, Jorien E. (2)
Abbott, Benjamin W. (1)
Jones, Jeremy B. (1)
Schuur, Edward A. G. (1)
Chapin, F. Stuart, I ... (1)
Bowden, William B. (1)
visa fler...
Bret-Harte, M. Syndo ... (1)
Epstein, Howard E. (1)
Flannigan, Michael D ... (1)
Harms, Tamara K. (1)
Hollingsworth, Teres ... (1)
Mack, Michelle C. (1)
McGuire, A. David (1)
Natali, Susan M. (1)
Rocha, Adrian V. (1)
Tank, Suzanne E. (1)
Turetsky, Merritt R. (1)
Wickland, Kimberly P ... (1)
Aiken, George R. (1)
Alexander, Heather D ... (1)
Amon, Rainer M. W. (1)
Benscoter, Brian W. (1)
Bergeron, Yves (1)
Bishop, Kevin (1)
Blarquez, Olivier (1)
Bond-Lamberty, Ben (1)
Breen, Amy L. (1)
Buffam, Ishi (1)
Cai, Yihua (1)
Carcaillet, Christop ... (1)
Carey, Sean K. (1)
Chen, Jing M. (1)
Chen, Han Y. H. (1)
Christensen, Torben ... (1)
Cooper, Lee W. (1)
Cornelissen, J. Hans ... (1)
de Groot, William J. (1)
DeLuca, Thomas H. (1)
Dorrepaal, Ellen (1)
Fetcher, Ned (1)
Finlay, Jacques C. (1)
Forbes, Bruce C. (1)
French, Nancy H. F. (1)
Gauthier, Sylvie (1)
Girardin, Martin P. (1)
Goetz, Scott J. (1)
Goldammer, Johann G. (1)
Gough, Laura (1)
Grogan, Paul (1)
Guo, Laodong (1)
visa färre...
Lärosäte
Stockholms universitet (2)
Göteborgs universitet (1)
Uppsala universitet (1)
Lunds universitet (1)
Sveriges Lantbruksuniversitet (1)
Språk
Engelska (2)
Forskningsämne (UKÄ/SCB)
Naturvetenskap (2)
Lantbruksvetenskap (1)

År

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Stäng

Kopiera och spara länken för att återkomma till aktuell vy