Distribution and abundance of methagenic and methatrophic microorganisms across European streams

Autor: Nagler, M., Praeg, N., Niedrist, G., Attermeyer, K., Bednarik, A., Bors, C., Catalan, N., sophie Cauvy-Fraunié, Colls, M., Eyto, E., Doyle, B., Evtimova, V., Fenoglio, S., Freixa, A., Fuss, T., Gaffney, P., Gilbert, P., Gutmann Roberts, C., Herrero Ortega, S., Kenderov, L., Klaus, M., Lamonica, D., Machalett, B., Mor, J. R., Nydahl, A., Pegg, J., Piano, E., Pilotto, F., Romero, F., Romero Gonzalez Quijano, C., Rulik, M., Steinle, L., Thuile Bistarelli, L., Bodmer, P.
Přispěvatelé: UNIVERSITAT INNSBRUCK AUT, Partenaires IRSTEA, Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), WASSERCLUSTER LUNZ LUNZ AM SEE AUT, Palacky University Olomouc, UNIVERSITY OF KOBLENZLANDAU LANDAU IN DER PFALZ DEU, CATALAN INSTITUTE FOR WATER RESEACH GIRONA ESP, RiverLy (UR Riverly), Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), THE MARINE INSTITUTE NEWPORT IRL, DUNDALK INSTITUTE OF TECHNOLOGY DUNDALK IRL, BULGARIAN ACADEMY OF SCIENCES SOFIA BGR, UNIVERSITA DEL PIEMONTE ORIENTALE ALESSANDRIA ITA, LEIBNIZ INSTITUTE OF FRESHWATER ECOLOGY AND INLAND FISHERIES BERLIN DEU, University of the Highlands and Islands (UHI), Bournemouth University [Poole] (BU), SOFIA UNIVERSITY ST KLIMENT OHRIDSKI BGR, UMEA UNIVERSITY SWE, Humboldt-Universität zu Berlin, University of Massachusetts [Amherst] (UMass Amherst), University of Massachusetts System (UMASS), Uppsala University, SOUTH AFRICAN INSTITUTE FOR AQUATIC BIODIVERSITY MAKHANDA ZAF, SENCKENBERG RESEARCH INSTITUTE AND NATURAL HISTORY MUSEUM FRANKFURT GELNHAUSEN DEU, University of Basel (Unibas)
Jazyk: angličtina
Rok vydání: 2019
Předmět:
Zdroj: 11th Symposium for European Freshwater Sciences
11th Symposium for European Freshwater Sciences, Jun 2019, Zagreb, Croatia. pp.1
HAL
Popis: International audience; Globally, streams and rivers emit a significant amount of methane, a highly potent greenhouse gas. However, little is known about stream sediment microbial communities, driving the net methane balance in these systems, especially on their distribution and composition at large spatial scales. Within the project Euro Methane we investigated the diversity and abundance of methanogenic archaea and methane-oxidizing bacteria across 16 European streams (from northern Spain to central Sweden) via 16S rRNA sequencing and qPCR. We determined environmental drivers of both abundance and community composition and explored the link to measured potential methane production and oxidation rates of the respective sediments. We found that the community composition of methane-oxidizing bacteria significantly differed among the studied streams, while methanogenic archaea were more homogeneously distributed. Beyond the overall diversity trends, indicator species for stream types were identified. Methanogenic Methanosaeta sp. and methane-oxidizing Methyloglobulus sp. increased with geographical latitude and dominated in headwater streams (orders 1-3) with high oxygen levels and high proportions of pristine land within the catchment, while methanogenic Methanomethylovorans sp. and methane-oxidizing Methylocaldum spp. were more common in larger streams (orders 4-6) with higher discharge and agricultural influence. Potential methane production rates significantly increased with abundance of methanogenic archaea, while potential methane oxidation rates did not show significant correlations with methane oxidizing bacteria, presumably due to the more diverse physiological capabilities of this microbial group. Our study represents a holistic large-scale biogeographical overview of two microbial groups to enhance our understanding of the methane cycle within a heretofore understudied ecosystem.
Databáze: OpenAIRE
Externí odkaz: