English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

Evidence of nitrification and denitrification in high and low microbial abundance sponges

MPS-Authors
/persons/resource/persons210751

Schläppy,  M. L.
Permanent Research Group Microsensor, Max Planck Institute for Marine Microbiology, Max Planck Society;

/persons/resource/persons210755

Schottner,  S. I.
Microbial Habitat Group, Max Planck Institute for Marine Microbiology, Max Planck Society;

/persons/resource/persons210568

Lavik,  G.
Department of Biogeochemistry, Max Planck Institute for Marine Microbiology, Max Planck Society;

/persons/resource/persons210556

Kuypers,  M. M. M.
Department of Biogeochemistry, Max Planck Institute for Marine Microbiology, Max Planck Society;

/persons/resource/persons210257

de Beer,  D.
Permanent Research Group Microsensor, Max Planck Institute for Marine Microbiology, Max Planck Society;

/persons/resource/persons210453

Hoffmann,  F.
HGF MPG Joint Research Group for Deep Sea Ecology & Technology, Max Planck Institute for Marine Microbiology, Max Planck Society;

External Ressource
No external resources are shared
Fulltext (public)

Schlaeppy2010.pdf
(Publisher version), 470KB

Supplementary Material (public)
There is no public supplementary material available
Citation

Schläppy, M. L., Schottner, S. I., Lavik, G., Kuypers, M. M. M., de Beer, D., & Hoffmann, F. (2010). Evidence of nitrification and denitrification in high and low microbial abundance sponges. Marine Biology, 157(3), 593-602.


Cite as: http://hdl.handle.net/21.11116/0000-0001-CAE4-A
Abstract
Aerobic and anaerobic microbial key processes were quantified and compared to microbial numbers and morphological structure in Mediterranean sponges. Direct counts on histological sections stained with DAPI showed that sponges with high microbial abundances (HMA sponges) have a denser morphological structure with a reduced aquiferous system compared to low microbial abundance (LMA) sponges. In Dysidea avara, the LMA sponge, rates of nitrification and denitrification were higher than in the HMA sponge Chondrosia reniformis, while anaerobic ammonium oxidation and sulfate reduction were below detection in both species. This study shows that LMA sponges may host physiologically similar microbes with comparable or even higher metabolic rates than HMA sponges, and that anaerobic processes such as denitrification can be found both in HMA and LMA sponges. A higher concentration of microorganisms in the mesohyl of HMA compared to LMA sponges may indicate a stronger retention of and, hence, a possible benefit from associated microbes.