http://www.cnr.it/ontology/cnr/individuo/prodotto/ID42357
MICROBIAL COMMUNITIES IN STREAMBED SEDIMENTS RECOVERING FROM DESICCATION (Articolo in rivista)
- Type
- Label
- MICROBIAL COMMUNITIES IN STREAMBED SEDIMENTS RECOVERING FROM DESICCATION (Articolo in rivista) (literal)
- Anno
- 2010-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1111/j.1574-6941.2009.00819.x (literal)
- Alternative label
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- MARXSEN J. (1,2); ZOPPINI A. (3); WILCZEK S. (1) (literal)
- Pagina inizio
- Pagina fine
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
- http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1574-6941/homepage/EditorialBoard.html (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
- Rivista
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
- Note
- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- 1) Limnologische Fluss-Station des Max-Planck-Instituts fur Limnologie, Schlitz, Germany;
2) Institut fur Allgemeine und Spezielle Zoologie, Tierokologie, Justus-Liebig-Universitat, Gießen, Germany;
3) Istituto di Ricerca Sulle Acque, Consiglio Nazionale delle Ricerche, Monterotondo, Rome, Italy (literal)
- Titolo
- MICROBIAL COMMUNITIES IN STREAMBED SEDIMENTS RECOVERING FROM DESICCATION (literal)
- Abstract
- Climate change affects running waters not only by increasing temperatures but
also by increasing discharge variability as more frequent and severe floods and
more frequent and longer droughts occur, especially in upper reaches. Mediterranean
streams are known to experience droughts, but Central European headwaters
are also beginning to be affected. The development of bacterial communities
(abundance, composition) and the recovery of microbial functions (bacterial
production, extracellular enzyme activity) were explored after rewetting desiccated
streambed sediments via a sediment core perfusion technique. The bacterial
community composition changed only slightly in the sediments from the Central
European stream Breitenbach (Germany), but distinctly in the Mediterranean
Mulargia River (Sardinia, Italy) during 4 days of experimental rewetting. Breitenbach
sediments probably enabled survival of bacterial communities more similar
to indigenous streambed communities, because they were less dry. High activity of
enzymes involved in polymer degradation at the beginning of rewetting in both
sediments indicated the persistence of extracellular enzymes during drought. After
4 days, nearly all microbial activities reached a level similar to unaffected sediments
for the Breitenbach, but not for Mulargia. Here, much more intense drying
resulted in a more distinct change and reduction of the microbial community,
responsible for slower recovery of structure and functions. (literal)
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