TY - GEN A1 - Fabian, Jenny A1 - Zlatanović, Sanja A1 - Mutz, Michael A1 - Premke, Katrin T1 - Fungal-bacterial dynamics and their contribution to terrigenous carbon turnover in relation to organic matter quality T2 - The ISME Journal KW - organic matter KW - sediments Y1 - 2017 U6 - https://doi.org/10.1038/ismej.2016.131 SN - 1751-7362 VL - 11 IS - 2 SP - 415 EP - 425 ER - TY - GEN A1 - Zlatanović, Sanja A1 - Fabian, Jenny A1 - Mendoza-Lera, Clara A1 - Woodward, K. Benjamin A1 - Premke, Katrin A1 - Mutz, Michael T1 - Periodic sediment shift in migrating ripples influences benthic microbial activity T2 - Water Resources Research KW - migrating ripples KW - disturbance KW - microbial activity Y1 - 2017 U6 - https://doi.org/10.1002/2017WR020656 SN - 1944-7973 VL - 53 IS - 6 SP - 4741 EP - 4755 ER - TY - GEN A1 - Zlatanović, Sanja A1 - Fabian, Jenny A1 - Premke, Katrin A1 - Mutz, Michael T1 - Shading and sediment structure effects on stream metabolism resistance and resilience to infrequent droughts T2 - Science of The Total Environment KW - Sediment heterogeneity KW - Microbes KW - Climate change Y1 - 2017 U6 - https://doi.org/10.1016/j.scitotenv.2017.10.105 SN - 1879-1026 SN - 0048-9697 ER - TY - GEN A1 - Fabian, Jenny A1 - Zlatanović, Sanja A1 - Mutz, Michael T1 - Environmental Control on Microbial Turnover of Leaf Carbon in Streams – Ecological Function of Phototrophic-Heterotrophic Interactions T2 - Frontiers in microbiology KW - algae KW - bacteria KW - microbial interactions Y1 - 2018 U6 - https://doi.org/10.3389/fmicb.2018.01044 SN - 1664-302X VL - Volume 9 ER - TY - GEN A1 - Oprei, Anna A1 - Zlatanović, Sanja A1 - Mutz, Michael T1 - When temperate streams fall dry: Humidity and trophic interactions control biofilm resilience T2 - Ergebnisse der Jahrestagung 2019 in Münster KW - Climate change KW - Flow intermittency Y1 - 2020 SN - 978-3-9818302-4-8 SP - 20 EP - 31 PB - Eigenverlag der DGL CY - Essen ER - TY - CHAP A1 - Zlatanović, Sanja A1 - Fabian, Jenny A1 - Premke, Katrin A1 - Mutz, Michael T1 - What drives structural and functional resistance and resilience of sediment microbial community to supra-seasonal drought-shading and sediment structure as controlling factors? T2 - Ergebnisse der Jahrestagung 2017 der Deutschen Gesellschaft für Limnologie (DGL) in Cottbus KW - microbial community Y1 - 2018 UR - https://www.dgl-ev.de/cms/upload/dokumente/Publikationen/DGL_Ergebnisse_der_Jahrestagung_2017_Cottbus_CD.pdf SN - 978-3-9818302-2-4 SP - S. 528 PB - Eigenverlag der DGL CY - Hardegsen ER - TY - CHAP A1 - Oprei, Anna A1 - Zlatanović, Sanja A1 - Mutz, Michael T1 - Grazing and drying intensity modulate drought resistance and recovery of shallow hyporheic respiration T2 - Ergebnisse der Jahrestagung 2017 der Deutschen Gesellschaft für Limnologie (DGL) in Cottbus KW - drought resistance Y1 - 2018 UR - https://www.dgl-ev.de/cms/upload/dokumente/Publikationen/DGL_Ergebnisse_der_Jahrestagung_2017_Cottbus_CD.pdf SN - 978-3-9818302-2-4 SP - S. 355 PB - Eigenverlag der DGL CY - Hardegsen ER - TY - CHAP A1 - Altenkirch, Nora A1 - Mutz, Michael A1 - Molkenthin, Frank A1 - Zlatanović, Sanja A1 - Trauth, Nico T1 - Untangling hyporheic residence time distributions and whole stream metabolisms using a hydrological process model T2 - European Geosciences Union, General Assembly 2016, Vienna, Austria N2 - The interaction of the water residence time in hyporheic sediments with the sediment metabolic rates is believed to be a key factor controlling whole stream metabolism. However, due to the methodological difficulties, there is little data that investigates this fundamental theory of aquatic ecology. Here, we report on progress made to combine numerical modeling with a series of manipulation to laboratory flumes overcoming methodological difficulties. In these flumes, hydraulic conditions were assessed using non-reactive tracer and heat pulse sensor. Metabolic activity was measured as the consumption and production of oxygen and the turnover of reactive tracers. Residence time and metabolic processes were modeled using a multicomponent reactive transport code called Min3P and calibrated with regard to the hydraulic conditions using the results obtained from the flume experiments. The metabolic activity was implemented in the model via Monod type expressions e.g. for aerobic respiration rates. A number of sediment structures differing in residence time distributions were introduced in both, the model and the flumes, specifically to model the biogeochemical performance and to validate the model results. furthermore, the DOC supply and surface water flow velocity were altered to test the whole stream metabolic response. Using the results of the hydrological process model, a sensitivity analysis of the impact of residence time distributions on the metabolic activity could yield supporting proof of an existing link between the two. Y1 - 2016 UR - http://meetingorganizer.copernicus.org/EGU2016/EGU2016-14435.pdf N1 - EGU2016-14435 PB - European Geophysical Society CY - Katlenburg-Lindau ER - TY - GEN A1 - Altenkirch, Nora A1 - Zlatanović, Sanja A1 - Woodward, K. Benjamin A1 - Trauth, Nico A1 - Mutz, Michael A1 - Molkenthin, Frank T1 - Untangling hyporheic residence time distributions and whole stream" "metabolism using a hydrological process model T2 - Procedia Engineering N2 - The interaction of the water residence time (RT) in hyporheic sediments with the sediment metabolic rates is believed to be a key factor controlling whole stream metabolism. However, due to the methodological difficulties, there is little data that investigates this fundamental theory of aquatic ecology. Here, we report on progress made to combine numerical modelling with a series of modification to laboratory flumes overcoming methodological difficulties e.g. by creating steady flow paths for assessment of metabolic rates. To model the biogeochemical performance and to validate the model results, sediment structures were introduced in both, the model and the flumes, leading to differing RT distributions. Furthermore, the DOC supply in the flumes was manipulated to test the whole stream metabolic response with regard to RT distributions. In the flumes, hydraulic conditions were assessed using conservative tracer and heat as tracer. Metabolic activity was assessed using oxygen dynamics as a proxy of community respiration (CR). Residence time and metabolic processes were modelled using a multicomponent reactive transport code called MIN3P and calibrated with regard to the hydraulic conditions using the results obtained from the flume experiments. Monod type expressions were used to implement metabolic activity terms in the model. Using the results of the hydrological process model, a sensitivity analysis of the impact of RT distributions on the metabolic activity could yield supporting proof of an existing link between the two. KW - residence times KW - metabolism KW - MIN3P Y1 - 2016 UR - http://www.sciencedirect.com/science/article/pii/S1877705816319877 U6 - https://doi.org/10.1016/j.proeng.2016.07.598 SN - 1877-7058 N1 - 12th International Conference on Hydroinformatics, HIC 2016, Incheon, Korea VL - 154 SP - 1071 EP - 1078 ER - TY - GEN A1 - Oprei, Anna A1 - Zlatanović, Sanja A1 - Mutz, Michael T1 - Grazers superimpose humidity effect on stream biofilm resistance and resilience to dry-rewet stress T2 - Science of The Total Environment KW - Climate change KW - Flow intermittency Y1 - 2019 U6 - https://doi.org/10.1016/j.scitotenv.2018.12.316 SN - 0048-9697 VL - 659 SP - 841 EP - 850 ER - TY - THES A1 - Zlatanović, Sanja T1 - In-stream microbial carbon transformation under opposing stresses - drought and sediment transport KW - C-cycling KW - Hyporheic zone KW - Environmental stressors Y1 - 2018 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:co1-opus4-44896 ER -