Details zur Publikation
Kategorie Textpublikation
Referenztyp Zeitschriften
DOI 10.1007/s10750-010-0285-9
Volltext Shareable Link
Titel (primär) Temperature affects the response of heterotrophic bacteria and mixotrophic algae to enhanced concentrations of soil extract
Autor Kamjunke, N.
Quelle Hydrobiologia
Erscheinungsjahr 2010
Department FLOEK
Band/Volume 649
Heft 1
Seite von 379
Seite bis 383
Sprache englisch
Keywords Bacteria; Mixotrophic algae; Temperature; DOM; Climate change; Chemostat
Abstract To investigate the consequences of increased temperature and enhanced input of dissolved organic matter (DOM) into lakes for heterotrophicic bacteria and for mixotrophic algae which use DOM in addition to photosynthesis, the hypotheses were tested whether (1) both bacteria and mixotrophic algae benefit from increased input of DOM, or (2) increased DOM input enhances bacterial biomass and thereby decreases algal biomass. Growth experiments in batch cultures, exudation measurements, and competition experiments in chemostats were performed at two temperature levels. Increased temperature stimulated the autotrophic growth rate of Chlorella protothecoides. Bacteria and Chlorella increased their heterotrophic growth rates at higher DOM concentration at lower temperature whereas enhanced DOM concentration hardly stimulated their growth at higher temperature. In chemostats, enhanced input of soil extract increased both bacterial and algal biomass at lower temperature whereas bacterial biomass increased only slightly and algal biomass decreased at higher temperature. Thus, the temperature determines the response of microorganisms to enhanced DOM concentration.
dauerhafte UFZ-Verlinkung https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=10139
Kamjunke, N. (2010):
Temperature affects the response of heterotrophic bacteria and mixotrophic algae to enhanced concentrations of soil extract
Hydrobiologia 649 (1), 379 - 383 10.1007/s10750-010-0285-9