Details zur Publikation |
Kategorie | Textpublikation |
Referenztyp | Zeitschriften |
DOI | 10.1016/j.femsec.2005.04.006 |
Titel (primär) | Methane cycling in lake sediments and its influence on chironomid larval δ13C |
Autor | Eller, G.; Deines, P.; Grey, J.; Richnow, H.H.; Krüger, M. |
Quelle | FEMS Microbiology Ecology |
Erscheinungsjahr | 2005 |
Department | ISOBIO |
Band/Volume | 54 |
Heft | 3 |
Seite von | 339 |
Seite bis | 350 |
Sprache | englisch |
Keywords | carbon cycle;carbon stable isotopes;methanogenesis;Archaea;Mmethanotroph;Chironomid larvae |
Abstract |
Stable carbon isotope analysis of chironomid larvae gave rise to the hypothesis that methane-oxidizing bacteria can provide an important food source for higher trophic levels in lakes. To investigate the importance of the methane cycle for the larval stable carbon signatures, isotope analysis and microbiological and biogeochemical investigations were combined. The study was based on comparison of a dimictic lake (Holzsee) and a polymictic, shallow lake (Großer Binnensee), both located in northern Germany. Both lakes are inhabited by Chironomus plumosus larvae, which exhibited a stronger 13C-depletion in Holzsee than in Großer Binnensee, indicating a greater contribution of methane–carbon in the former. Indeed, the processes involved in the microbial methane cycle were found to be more active in Holzsee, showing higher potential methane production and methane oxidation rates. Consistently, cell numbers of methane-oxidizing bacteria were with 0.5 − 1.7× 106 cells |
dauerhafte UFZ-Verlinkung | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=3295 |
Eller, G., Deines, P., Grey, J., Richnow, H.H., Krüger, M. (2005): Methane cycling in lake sediments and its influence on chironomid larval δ13C FEMS Microbiol. Ecol. 54 (3), 339 - 350 10.1016/j.femsec.2005.04.006 |