Bacterial communities in mountain lakes from North-Patagonian Andes: from diversity to function
Il 12/06/2018 ore 11.00 - 12.30
Istituto per lo studio degli ecosistemi, Ise-Cnr - Largo Tonolli 50, 28922 Verbania Pallanza
Seminario di Marcela Bastidas Navarro (Laboratory of Limnology- INIBIOMA (CONICET- National University of Comahue) Bariloche – Río Negro- Argentina)
Mountain lakes are remote systems whose localization determines extreme environmental conditions. Likewise, the presence of vegetation in the drainage area may constitute an important input of nutrients and dissolved organic carbon (DOC) of terrestrial origin. Thus, the localization of lakes with respect to the timberline may determine the development of the planktonic communities. Both the variation in the concentration and quality of DOC (importance of terrestrial input), can strongly influence activity, physiology, and diversity of bacterioplankton community. In North-Patagonian Andes (~41°S), the timberline (~1650 m a.s.l) is a deciduous forest of Nothofagus pumilio, and an important number of lakes are located both above and below this line. Thus, these lakes are located in a gradient of altitude, presenting a variable range of DOC concentration, and different contributions of terrestrial material, therefore they are propitious scenarios for the study of bacterial communities. In her talk, Marcela will show evidence of how quantity and quality of DOC can shape both community structure (taxonomic composition and physiological condition) and metabolic response (respiration rate and C-consumption).
Organizzato da:
Cnr Ise - Istituto per lo Studio degli Ecosistemi
Referente organizzativo:
Gianluca Corno
CNR - Istituto per lo studio degli ecosistemi
g.corno@ise.cnr.it
0323 518300
Modalità di accesso: ingresso libero
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