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 - 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 - GEN A1 - Oprei, Anna A1 - Schreckinger, José A1 - Kholiavko, Tatiana A1 - Frossard, Aline A1 - Mutz, Michael A1 - Risse-Buhl, Ute T1 - Functional and structural recovery of stream biofilms at the ha-bitat scale is based on the individual disturbance history T2 - 35. Jahrestagung der Deutschen Gesellschaft für Limnologie e.V. (DGL) und der Societas Internationalis Limnologiae (SIL) in Münster, 23.–27. September 2019, Abstractband KW - benthic communities Y1 - 2019 UR - http://www.dgl2019-muenster.de/assets/abstractband_dgl2019.pdf SP - 72 EP - 73 ER - TY - GEN A1 - Wonner, Tamara A1 - Oprei, Anna A1 - Mutz, Michael A1 - Risse-Buhl, Ute T1 - Is the epipsammic community modulated by trajectory of historic or current sediment shifting? T2 - 35. Jahrestagung der Deutschen Gesellschaft für Limnologie e.V. (DGL) und der Societas Internationalis Limnologiae (SIL) in Münster, 23.–27. September 2019, Abstractband KW - Sandy streambed sediments Y1 - 2019 UR - http://www.dgl2019-muenster.de/assets/abstractband_dgl2019.pdf SP - 167 EP - 168 ER - TY - GEN A1 - Oprei, Anna A1 - Schreckinger, José A1 - Kholiavko, Tatiana A1 - Mutz, Michael A1 - Risse-Buhl, Ute T1 - Variability of functional stream biofilm recovery at the habitat scale after disturbances from drying and sediment transport T2 - 11th Symposium for European Freshwater Sciences, June 30–July 5, 2019, Zagreb, Croatia, SEFS11 Abstract book KW - Microbial communities Y1 - 2019 UR - http://www.sefs11.biol.pmf.hr/wp-content/uploads/2019/07/Book-of-abstract.pdf SP - 338 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 - GEN A1 - Wonner, Tamara A1 - Oprei, Anna A1 - Mutz, Michael A1 - Risse-Buhl, Ute T1 - Is the epipsammic community modulated by trajectory of historic or current sediment shifting? T2 - Ergebnisse der Jahrestagung 2019 in Münster KW - Microbial communities Y1 - 2020 UR - https://www.dgl-ev.de/cms/upload/dokumente/Publikationen/2020__DGL_Ergebnisse_Muenster_2019_web.pdf SN - 978-3-9818302-4-8 SP - 418 PB - Eigenverlag der DGL CY - Essen ER - TY - GEN A1 - Kryvokhyzhyna, Mariia A1 - Majdi, Nabil A1 - Oprei, Anna A1 - Mutz, Michael A1 - Risse-Buhl, Ute T1 - Response of meiobenthos to migrating ripples in sandy lowland streams T2 - Hydrobiologia KW - Sediment transport KW - Community structure KW - Benthic invertebrates Y1 - 2022 UR - https://link.springer.com/content/pdf/10.1007/s10750-022-04836-6.pdf U6 - https://doi.org/10.1007/s10750-022-04836-6 SN - 0018-8158 VL - 849 IS - 8 SP - 1905 EP - 1921 ER - TY - GEN A1 - Franzmann, Insa A1 - Schreckinger, José A1 - Oprei, Anna A1 - Mutz, Michael T1 - Mixed in - Sediment migration modulates the structural and functional colonisation of freshly incoming soil from bank erosion T2 - Deutsche Gesellschaft für Limnologie e.V., Ergebnisse der Jahrestagung in Leipzig 2021 KW - lowland rivers Y1 - 2022 UR - https://www.dgl-ev.de/publikationen/dgl-tagungsbaende/tagungsberichte.html SN - 978-3-9818302-6-2 SP - 94 PB - Eigenverlag der DGL CY - Essen ER - TY - GEN A1 - Risse-Buhl, Ute A1 - Oprei, Anna A1 - Mutz, Michael T1 - Migrating streambeds – ecological and biogeochemical consequences of fine sediment transport T2 - Deutsche Gesellschaft für Limnologie e.V., Ergebnisse der Jahrestagung in Leipzig 2021 KW - Running waters ecosystems Y1 - 2022 UR - https://www.dgl-ev.de/publikationen/dgl-tagungsbaende/tagungsberichte.html SN - 978-3-9818302-6-2 SP - 192 PB - Eigenverlag der DGL CY - Essen ER - TY - GEN A1 - Risse-Buhl, Ute A1 - Oprei, Anna A1 - Mutz, Michael T1 - Streambed migration frequency drives ecology and biogeochemistry across spatial scales T2 - WIREs Water KW - benthic and hyporheic communities KW - environmental filtering Y1 - 2023 U6 - https://doi.org/10.1002/wat2.1632 SN - 2049-1948 VL - 10 IS - 3 ER - TY - GEN A1 - Oprei, Anna A1 - Schreckinger, Jose A1 - Franzmann, Insa A1 - Lee, Hayoung A1 - Mutz, Michael A1 - Risse-Buhl, Ute T1 - Light over mechanics: microbial community structure and activity in simulated migrating bedforms are controlled by oscillating light rather than by mechanical forces T2 - FEMS Microbiology Ecology KW - community structure KW - light oscillation KW - metabolism Y1 - 2024 U6 - https://doi.org/10.1093/femsec/fiae073 SN - 0168-6496 SN - 1574-6941 VL - 100 IS - 6 ER - TY - GEN A1 - Oprei, Anna A1 - Schreckinger, José A1 - Mutz, Michael A1 - Kamjunke, Norbert A1 - Worrich, Anja A1 - Risse-Buhl, Ute T1 - Migrating ripples create streambed heterogeneity altering microbial diversity and metabolic activity T2 - Limnology and Oceanography KW - Sandy sediments KW - lowland streams Y1 - 2024 UR - https://aslopubs.onlinelibrary.wiley.com/journal/19395590 U6 - https://doi.org/10.1002/lno.12631 SN - 1939-5590 SN - 0024-3590 VL - 69 IS - 8 SP - 1882 EP - 1899 ER - TY - GEN A1 - Oprei, Anna A1 - Schreckinger, José A1 - Kholiavko, Tatiana A1 - Frossard, Aline A1 - Mutz, Michael A1 - Risse-Buhl, Ute T1 - Long-term functional recovery and associated microbial community structure after sediment drying and bedform migration T2 - Frontiers in Ecology and Evolution N2 - Climate change and erosion from agricultural areas cause increased drying periods and bedform migration of riverbeds, respectively, worldwide. Both sediment drying and bedform migration can independently stress the microbial community residing in the riverbed. Here, we investigated the microbial response after exposure to these stressors with a focus on long-term recovery. We conducted an in situ experiment to investigate the long-term (8 months) functional and structural recovery of benthic microbial communities from either sediment drying (episodic severe stressor) or bedform migration (frequent moderate stressor). Stressed sediment associated communities were rewetted (dried sediments) and immobilized (migrated sediments) and exposed in the River Spree (north-eastern Germany) to initiate the recovery process. We then evaluated the microbial function (community respiration, net community production and extracellular enzymatic activities) as well as the bacterial, fungal and diatom community structure (16S rRNA gene and ITS region metabarcoding, and microscopic diatom morphotype classification). We observed different recovery times for community respiration (less than 7 days) and gross primary production (more than 5 months), implying a shift toward net heterotrophy in the first few months after stress exposure. Similarly, we observed a strong autotrophic community response (particularly associated with the diatoms Navicula and Fragilaria), especially in migrated sediments. The bacterial and fungal community response to sediment drying was stronger than to bedform migration (particularly associated with the bacterium Flavobacterium and the fungi Alternaria sp. and Aureobasidium pullulans). Our results show that sediment drying and bedform migration had a significant impact on the microbial community function and structure, which persisted for several months after the stress. Due to the surprising long period of recovery, successive stress events combined with seasonal effects will likely hamper the ongoing recovery process with severe alterations to the microbial function and structure. These findings extend the concept of ecosystem resilience and stability on the dimensions of timescale and seasonal environmental variations. Legacy effects are expected to play a key role when facing future stress. Y1 - 2023 UR - https://www.frontiersin.org/articles/10.3389/fevo.2023.1112519/full U6 - https://doi.org/10.3389/fevo.2023.1112519 SN - 2296-701X VL - Vol. 11 ER - TY - GEN A1 - Oprei, Anna A1 - Schreckinger, José A1 - Kholiavko, Tatiana A1 - Frossard, Aline A1 - Mutz, Michael T1 - Functional and structural recovery of stream biofilms at the habitat scale is based on the individual disturbance history T2 - Ergebnisse der Jahrestagung 2019 in Münster KW - metabolic activity Y1 - 2020 UR - https://www.dgl-ev.de/cms/upload/dokumente/Publikationen/2020__DGL_Ergebnisse_Muenster_2019_web.pdf SN - 978-3-9818302-4-8 SP - 216 PB - Eigenverlag der DGL CY - Essen ER - TY - GEN A1 - Oprei, Anna A1 - Franzmann, Insa A1 - Schreckinger, José A1 - Mutz, Micheal T1 - From soil to sediment : bedform migration shapes microbial communities from eroding bank soil during terrestrial–aquatic regime shift T2 - Journal of geophysical research: biogeosciences N2 - Soil erosion from riverbanks is a common phenomenon in sandy streams and rivers and has intensified in the last decades due to land use change. When entering the aquatic environment, incoming soil is mixed with benthic sediments, and the microbial community undergoes a terrestrial–aquatic transition. Aquatic sediments in sand-dominated streams are frequently transported as migrating ripples, where microbes adhering to sand grains experience migrating-resting cycles in the range of minutes to hours. Despite the ubiquitous co-occurrence of riverbank erosion and migrating bedforms in sand-dominated streams, we lack a general understanding of how sediment transport at low flow influences the terrestrial–aquatic habitat transition. In a microcosm experiment, we compared purely aquatic sediment with a mix from riverbank soil and aquatic sediment. We tested the effect of simulated ripple migration on both sediment types compared to stationary conditions. We estimated α- and β-diversity, abundance, community respiration, and net ecosystem production for bacteria, fungi, and diatoms. Our results show that high richness and abundance of the terrestrial community, especially fungi, were lost after the aquatic transition. The succession of bacteria and fungi, which behaved more like habitat specialists, was not measurably influenced by sediment transport, but showed a distinct shift from a terrestrial to an aquatic community. In contrast, the diatom community was dominated by habitat generalists. Final community respiration and net ecosystem production in the mixed sediments were lower compared to aquatic sediments. Our findings highlight that further studies need to include spatiotemporal patterns of sediment transport when investigating terrestrial–aquatic habitat transitions. KW - Sediment transport KW - Microbial community Y1 - 2025 U6 - https://doi.org/10.1029/2024JG008549 SN - 2169-8961 VL - 130 IS - 10 SP - 1 EP - 18 PB - Wiley CY - Hoboken, NJ ER -