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National Environmental Research Institute (Silkeborg) (AU)
www.dmu.dk

Info  Publications | Projects 
Danish name: Danmarks Miljøundersøgelser
Parent institute: University of Aarhus (AU), more
Address:
Vejlsøvej 25
8600 Silkeborg
Denmark

E-mail:
 

Abstract:
The main research topic of NR-P during the last 5 years has been the benthic marine nitrogen cycle, i.e. the microbiology and response of the processes nitrification, denitrification, anammox and nitrate ammonification  to biological, physical and chemical parameters in sediments.  State of the art microsensor techniques (e.g. biosensors for NO3- and NO2-,  oxygen and sulphide  and pH microsensor), stable isotopes (15N), and molecular techniques have been applied in combination to study a) interactions between benthic micro algae and N-cycle bacteria  in estuarine sediments b) the diversity, spatial and  seasonal variations in abundance and activity of bacteria responsible for the unique anaerobic oxidation of ammonium (Anammox) in natural sediments and c) the biology of large filamentous nitrate accumulating sulphur bacteria. Recently the research has been focused on the role of benthic foraminifers in the nitrogen cycle. This has led to the discovery of eukaryotic cells capable for denitrification. The work has been carried out in both artic and temperate environments. 

Publications (2)  Top | Projects 
    ( 2 peer reviewed ) split up filter
  • Peer reviewed article Dale, A. W.; Regnier, P.; Van Cappellen, P.; Fossing, H.; Jensen, J. B.; Jørgensen, B. B. (2009). Remote quantification of methane fluxes in gassy marine sediments through seismic survey. Geology (Boulder Colo.) 37(3): 235-238. dx.doi.org/10.1130/G25323A.1, more
  • Peer reviewed article Dale, A. W.; Aguilera, D. R.; Regnier, P.; Fossing, H.; Knab, N. J.; Jørgensen, B. B. (2008). Seasonal dynamics of the depth and rate of anaerobic oxidation of methane in Aarhus Bay (Denmark) sediments. J. Mar. Res. 66(1): 127-155. dx.doi.org/10.1357/002224008784815775, more

Projects (2)  Top | Publications 
  • BlueReef: Rebuilding of Marine Cavernous Boulder Reefs in Kattegag, more
  • CARBOOCEAN: Marine carbon sources and sinks assessment, more

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