Help Privacy Policy Disclaimer
  Advanced SearchBrowse




Journal Article

Response of benthic microbial communities to chitin enrichment: an in situ study in the deep Arctic Ocean


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

External Resource
No external resources are shared
Fulltext (restricted access)
There are currently no full texts shared for your IP range.
Fulltext (public)

(Publisher version), 371KB

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

Kanzog, C., Ramette, A., Quéric, N. V., & Klages, M. (2009). Response of benthic microbial communities to chitin enrichment: an in situ study in the deep Arctic Ocean. Polar Biology, 32(1), 105-112.

Cite as: https://hdl.handle.net/21.11116/0000-0001-CC90-6
In situ enrichment experiments were carried out in the Arctic deep sea (Fram Strait region) to observe the response of benthic microbial communities to chitin supply. Chambers of a benthic lander were filled in July 2004 with deep-sea sediments enriched with 1.3–7.0 g m−2 of chitin and the effects of chitin enrichment were assessed on the microbial hydrolytic activity potential, cell number and community structure after periods of 1 week and 1 year of in situ deployment. The input of chitin had no effect on microbial abundance and chitobiase activity after 7 days of incubation, whereas community structure in enriched sediments, determined by terminal restriction fragment length polymorphism analysis of 16S rRNA genes, was different from the controls. After 1 year, microbial numbers and activity significantly increased in sediments enriched with high chitin concentrations and bacterial community structure was different from that of the other treatments. The present study suggests that microbial community structure in Arctic deep-sea sediments can react quickly to sudden large chitin inputs into the sediments and that this appears to precondition subsequent enhanced growth and enzymatic activity changes.