Till sidans topp

Sidansvarig: Webbredaktion
Sidan uppdaterades: 2012-09-11 15:12

Tipsa en vän
Utskriftsversion

Habitat partitioning of m… - Göteborgs universitet Till startsida
Webbkarta
Till innehåll Läs mer om hur kakor används på gu.se

Habitat partitioning of marine benthic denitrifier communities in response to oxygen availability

Artikel i vetenskaplig tidskrift
Författare L. Wittorf
G. Bonilla-Rosso
C. M. Jones
Ola Bäckman
Stefan Hulth
S. Hallin
Publicerad i Environmental Microbiology Reports
Volym 8
Nummer/häfte 4
Sidor 486-492
ISSN 1758-2229
Publiceringsår 2016
Publicerad vid Institutionen för kemi och molekylärbiologi
Sidor 486-492
Språk en
Länkar dx.doi.org/10.1111/1758-2229.12393
Ämnesord anaerobic ammonium oxidation, nitrous-oxide reductase, aerobic, denitrification, thiosphaera-pantotropha, wolinella-succinogenes, microbial community, nitrate respiration, n-2 production, nirs-type, sediments, Environmental Sciences & Ecology, Microbiology
Ämneskategorier Miljövetenskap, Mikrobiologi

Sammanfattning

Denitrification is of global significance for the marine nitrogen budget and the main process for nitrogen loss in coastal sediments. This facultative anaerobic respiratory pathway is modular in nature and the final step, the reduction of nitrous oxide (N2O), is performed by microorganisms with a complete denitrification pathway as well as those only capable of N2O reduction. Fluctuating oxygen availability is a significant driver of denitrification in sediments, but the effects on the overall N2O-reducing community that ultimately controls the emission of N2O from marine sediments is not well known. To investigate the effects of different oxygen regimes on N2O reducing communities, coastal marine surface sediment was incubated in microcosms under oxic, anoxic or oscillating oxygen conditions in the overlying water for 137 days. Quantification of the genetic potential for denitrification, anammox and respiratory ammonification indicated that denitrification supported nitrogen removal in these sediments. Furthermore, denitrifiers with a complete pathway were identified as the dominant community involved in N2O reduction, rather than organisms that are only N2O reducers. Specific lineages within each group were associated with different oxygen regimes suggesting that oxygen availability in the overlying water is associated with habitat partitioning of N2O reducers in coastal marine surface sediments.

Sidansvarig: Webbredaktion|Sidan uppdaterades: 2012-09-11
Dela:

På Göteborgs universitet använder vi kakor (cookies) för att webbplatsen ska fungera på ett bra sätt för dig. Genom att surfa vidare godkänner du att vi använder kakor.  Vad är kakor?