uu.seUppsala universitets publikasjoner
Endre søk
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Carbon dioxide emission from drawdown areas of a Brazilian reservoir is linked to surrounding land cover
Cornell University, USA.
Federal University of Juiz de Fora, Brazil.
Federal University of Juiz de Fora, Brazil.
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Limnologi.ORCID-id: 0000-0003-1351-9277
Vise andre og tillknytning
2019 (engelsk)Inngår i: Aquatic Sciences, ISSN 1015-1621, E-ISSN 1420-9055, Vol. 81, artikkel-id 68Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Reservoir sediments exposed to air due to water level fluctuations are strong sources of atmospheric carbon dioxide (CO2). The spatial variability of CO2 fluxes from these drawdown areas are still poorly understood. In a reservoir in southeastern Brazil, we investigated whether CO2 emissions from drawdown areas vary as a function of neighboring land cover types and assessed the magnitude of CO2 fluxes from drawdown areas in relation to nearby water surface. Exposed sediments near forestland (average = 2733 mg C m−2 day−1) emitted more CO2 than exposed sediments near grassland (average = 1261 mg C m−2 day−1), congruent with a difference in organic matter content between areas adjacent to forestland (average = 12.2%) and grassland (average = 10.9%). Moisture also had a significant effect on CO2 emission, with dry exposed sediments (average water content: 13.7%) emitting on average 2.5 times more CO2 than wet exposed sediments (average water content: 23.5%). We carried out a systematic comparison with data from the literature, which indicates that CO2 efflux from drawdown areas globally is about an order of magnitude higher than CO2 efflux from adjacent water surfaces, and within the range of CO2 efflux from terrestrial soils. Our findings suggest that emissions from exposed sediments may vary substantially in space, possibly related to organic matter supply from uphill vegetation, and that drawdown areas play a disproportionately important role in total reservoir CO2 emissions with respect to the area they cover.

sted, utgiver, år, opplag, sider
2019. Vol. 81, artikkel-id 68
HSV kategori
Identifikatorer
URN: urn:nbn:se:uu:diva-392337DOI: 10.1007/s00027-019-0665-9ISI: 000482233400001OAI: oai:DiVA.org:uu-392337DiVA, id: diva2:1348061
Forskningsfinansiär
EU, European Research Council, 336642Tilgjengelig fra: 2019-09-03 Laget: 2019-09-03 Sist oppdatert: 2019-09-30bibliografisk kontrollert

Open Access i DiVA

fulltext(1678 kB)104 nedlastinger
Filinformasjon
Fil FULLTEXT01.pdfFilstørrelse 1678 kBChecksum SHA-512
2f5f7f3ced0383bc53ff536a8f56522a32d9c5ba2f7b8769fbefbbb369414c4bab44022542a08d6b8afb6186cc9c3a11aca7b87443295f93ebca263c65b9d60a
Type fulltextMimetype application/pdf

Andre lenker

Forlagets fulltekst

Personposter BETA

Sobek, SebastianLinkhorst, Annika

Søk i DiVA

Av forfatter/redaktør
Sobek, SebastianLinkhorst, Annika
Av organisasjonen
I samme tidsskrift
Aquatic Sciences

Søk utenfor DiVA

GoogleGoogle Scholar
Totalt: 104 nedlastinger
Antall nedlastinger er summen av alle nedlastinger av alle fulltekster. Det kan for eksempel være tidligere versjoner som er ikke lenger tilgjengelige

doi
urn-nbn

Altmetric

doi
urn-nbn
Totalt: 159 treff
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf