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  • Lorke, A.University of Koblenz Landau, Germany (författare)

Technical note: drifting versus anchored flux chambers for measuring greenhouse gas emissions from running waters

  • Artikel/kapitelEngelska2015

Förlag, utgivningsår, omfång ...

  • 2015-12-07
  • COPERNICUS GESELLSCHAFT MBH,2015
  • electronicrdacarrier

Nummerbeteckningar

  • LIBRIS-ID:oai:DiVA.org:liu-123848
  • https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-123848URI
  • https://doi.org/10.5194/bg-12-7013-2015DOI

Kompletterande språkuppgifter

  • Språk:engelska
  • Sammanfattning på:engelska

Ingår i deldatabas

Klassifikation

  • Ämneskategori:ref swepub-contenttype
  • Ämneskategori:art swepub-publicationtype

Anmärkningar

  • Funding Agencies|German Research Foundation [LO 1150/9-1]; Leibniz Association within the Joint Initiative for Research and Innovation (BMBF); Erasmus Mundus program of the European Union; Swiss National Science Foundation [PA00P2_142041]; IGB cross-cutting research domain "Aquatic Boundaries and Linkages"; German Academic Exchange Service (DAAD) (Sustainable water management Program (NAWAM)) [A/12/91768]
  • Stream networks have recently been discovered to be major but poorly constrained natural greenhouse gas (GHG) sources. A fundamental problem is that several measurement approaches have been used without cross-comparisons. Flux chambers represent a potentially powerful methodological approach if robust and reliable ways to use chambers on running water can be defined. Here we compare the use of anchored and freely drifting chambers on various streams with different flow velocities. The study clearly shows that (1) anchored chambers enhance turbulence under the chambers and thus elevate fluxes, (2) drifting chambers have a very small impact on the water turbulence under the chamber and thus generate more reliable fluxes, (3) the bias of the anchored chambers greatly depends on chamber design and sampling conditions, and (4) there is a promising method to reduce the bias from anchored chambers by using a flexible plastic foil collar to seal the chambers to the water surface, rather than having rigid chamber walls penetrating into the water. Altogether, these results provide novel guidance on how to apply flux chambers in running water, which will have important consequences for measurements to constrain the global GHG balances.

Ämnesord och genrebeteckningar

Biuppslag (personer, institutioner, konferenser, titlar ...)

  • Bodmer, P.Leibniz Institute Freshwater Ecol and Inland Fisheries, Germany; Free University of Berlin, Germany (författare)
  • Noss, C.University of Koblenz Landau, Germany (författare)
  • Alshboul, Z.University of Koblenz Landau, Germany (författare)
  • Koschorreck, M.UFZ Helmholtz Centre Environm Research, Germany (författare)
  • Somlai-Haase, C.University of Koblenz Landau, Germany (författare)
  • Bastviken, DavidLinköpings universitet,Tema Miljöförändring,Filosofiska fakulteten(Swepub:liu)davba48 (författare)
  • Flury, S.Leibniz Institute Freshwater Ecol and Inland Fisheries, Germany (författare)
  • McGinnis, D. F.Leibniz Institute Freshwater Ecol and Inland Fisheries, Germany; University of Geneva, Switzerland (författare)
  • Maeck, A.Senect GmbH and Co KG, Germany (författare)
  • Mueller, D.Institute Environm Phys IUP, Germany; Centre Trop Marine Ecol ZMT, Germany (författare)
  • Premke, K.Leibniz Institute Freshwater Ecol and Inland Fisheries, Germany; Leibniz Centre Agriculture Landscape Research, Germany (författare)
  • University of Koblenz Landau, GermanyLeibniz Institute Freshwater Ecol and Inland Fisheries, Germany; Free University of Berlin, Germany (creator_code:org_t)

Sammanhörande titlar

  • Ingår i:Biogeosciences: COPERNICUS GESELLSCHAFT MBH12:23, s. 7013-70241726-41701726-4189

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