@misc{OpreiSchreckingerKholiavkoetal., author = {Oprei, Anna and Schreckinger, Jos{\´e} and Kholiavko, Tatiana and Frossard, Aline and Mutz, Michael and Risse-Buhl, Ute}, title = {Functional and structural recovery of stream biofilms at the ha-bitat scale is based on the individual disturbance history}, series = {35. Jahrestagung der Deutschen Gesellschaft f{\"u}r Limnologie e.V. (DGL) und der Societas Internationalis Limnologiae (SIL) in M{\"u}nster, 23.-27. September 2019, Abstractband}, journal = {35. Jahrestagung der Deutschen Gesellschaft f{\"u}r Limnologie e.V. (DGL) und der Societas Internationalis Limnologiae (SIL) in M{\"u}nster, 23.-27. September 2019, Abstractband}, pages = {72 -- 73}, language = {en} } @misc{OpreiSchreckingerKholiavkoetal., author = {Oprei, Anna and Schreckinger, Jos{\´e} and Kholiavko, Tatiana and Mutz, Michael and Risse-Buhl, Ute}, title = {Variability of functional stream biofilm recovery at the habitat scale after disturbances from drying and sediment transport}, series = {11th Symposium for European Freshwater Sciences, June 30-July 5, 2019, Zagreb, Croatia, SEFS11 Abstract book}, journal = {11th Symposium for European Freshwater Sciences, June 30-July 5, 2019, Zagreb, Croatia, SEFS11 Abstract book}, pages = {338}, language = {en} } @misc{SchreckingerMutzMendozaLera, author = {Schreckinger, Jos{\´e} and Mutz, Michael and Mendoza-Lera, Clara}, title = {Same metabolic resilience, different onset -metabolic implications of a rare drying in temperate river sediment}, series = {11th Symposium for European Freshwater Sciences, June 30-July 5, 2019, Zagreb, Croatia, SEFS11 Abstract book}, journal = {11th Symposium for European Freshwater Sciences, June 30-July 5, 2019, Zagreb, Croatia, SEFS11 Abstract book}, pages = {271}, language = {en} } @misc{SchreckingerMutzMendozaLeraetal., author = {Schreckinger, Jos{\´e} and Mutz, Michael and Mendoza-Lera, Clara and Frossard, Aline}, title = {Attributes of Drying Define the Structure and Functioning of Microbial Communities in Temperate Riverbed Sediment}, series = {Frontiers in Microbiology}, volume = {12}, journal = {Frontiers in Microbiology}, issn = {1664-302X}, doi = {10.3389/fmicb.2021.676615}, pages = {15}, language = {en} } @misc{SchreckingerMutzMendozaLera, author = {Schreckinger, Jos{\´e} and Mutz, Michael and Mendoza-Lera, Clara}, title = {When water returns: Drying history shapes respiration and nutrients release of intermittent river sediment}, series = {Science of The Total Environment}, volume = {838}, journal = {Science of The Total Environment}, number = {1}, issn = {1879-1026}, doi = {10.1016/j.scitotenv.2022.155950}, language = {en} } @misc{FranzmannSchreckingerOpreietal., author = {Franzmann, Insa and Schreckinger, Jos{\´e} and Oprei, Anna and Mutz, Michael}, title = {Mixed in - Sediment migration modulates the structural and functional colonisation of freshly incoming soil from bank erosion}, series = {Deutsche Gesellschaft f{\"u}r Limnologie e.V., Ergebnisse der Jahrestagung in Leipzig 2021}, journal = {Deutsche Gesellschaft f{\"u}r Limnologie e.V., Ergebnisse der Jahrestagung in Leipzig 2021}, publisher = {Eigenverlag der DGL}, address = {Essen}, isbn = {978-3-9818302-6-2}, pages = {94}, language = {en} } @misc{SchreckingerMutzFranzmannetal., author = {Schreckinger, Jos{\´e} and Mutz, Michael and Franzmann, Insa and Risse-Buhl, Ute}, title = {Light or mechanics: What drives phototrophic and heterotrophic microbial activity in sandy sediments?}, series = {Deutsche Gesellschaft f{\"u}r Limnologie e.V., Ergebnisse der Jahrestagung in Leipzig 2021}, journal = {Deutsche Gesellschaft f{\"u}r Limnologie e.V., Ergebnisse der Jahrestagung in Leipzig 2021}, publisher = {Eigenverlag der DGL}, address = {Essen}, isbn = {978-3-9818302-6-2}, pages = {206}, language = {en} } @misc{OpreiSchreckingerFranzmannetal., author = {Oprei, Anna and Schreckinger, Jose and Franzmann, Insa and Lee, Hayoung and Mutz, Michael and Risse-Buhl, Ute}, title = {Light over mechanics: microbial community structure and activity in simulated migrating bedforms are controlled by oscillating light rather than by mechanical forces}, series = {FEMS Microbiology Ecology}, volume = {100}, journal = {FEMS Microbiology Ecology}, number = {6}, issn = {0168-6496}, doi = {10.1093/femsec/fiae073}, pages = {15}, language = {en} } @misc{OpreiSchreckingerMutzetal., author = {Oprei, Anna and Schreckinger, Jos{\´e} and Mutz, Michael and Kamjunke, Norbert and Worrich, Anja and Risse-Buhl, Ute}, title = {Migrating ripples create streambed heterogeneity altering microbial diversity and metabolic activity}, series = {Limnology and Oceanography}, volume = {69}, journal = {Limnology and Oceanography}, number = {8}, issn = {1939-5590}, doi = {10.1002/lno.12631}, pages = {1882 -- 1899}, language = {en} } @misc{SchreckingerMutzGessneretal., author = {Schreckinger, Jos{\´e} and Mutz, Michael and Gessner, Mark O. and Gerull, Linda and Frossard, Aline}, title = {Fundamental shifts in soil and sediment microbial communities and functions during 10 year of early catchment succession}, series = {Soil Biology and Biochemistry}, volume = {203}, journal = {Soil Biology and Biochemistry}, publisher = {Elsevier BV}, address = {Amsterdam}, issn = {0038-0717}, doi = {10.1016/j.soilbio.2025.109713}, pages = {1 -- 11}, language = {en} } @misc{OpreiSchreckingerKholiavkoetal., author = {Oprei, Anna and Schreckinger, Jos{\´e} and Kholiavko, Tatiana and Frossard, Aline and Mutz, Michael and Risse-Buhl, Ute}, title = {Long-term functional recovery and associated microbial community structure after sediment drying and bedform migration}, series = {Frontiers in Ecology and Evolution}, volume = {Vol. 11}, journal = {Frontiers in Ecology and Evolution}, issn = {2296-701X}, doi = {10.3389/fevo.2023.1112519}, abstract = {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.}, language = {en} } @misc{OpreiSchreckingerKholiavkoetal., author = {Oprei, Anna and Schreckinger, Jos{\´e} and Kholiavko, Tatiana and Frossard, Aline and Mutz, Michael}, title = {Functional and structural recovery of stream biofilms at the habitat scale is based on the individual disturbance history}, series = {Ergebnisse der Jahrestagung 2019 in M{\"u}nster}, journal = {Ergebnisse der Jahrestagung 2019 in M{\"u}nster}, publisher = {Eigenverlag der DGL}, address = {Essen}, isbn = {978-3-9818302-4-8}, pages = {216}, language = {en} } @misc{OpreiFranzmannSchreckingeretal., author = {Oprei, Anna and Franzmann, Insa and Schreckinger, Jos{\´e} and Mutz, Micheal}, title = {From soil to sediment : bedform migration shapes microbial communities from eroding bank soil during terrestrial-aquatic regime shift}, series = {Journal of geophysical research: biogeosciences}, volume = {130}, journal = {Journal of geophysical research: biogeosciences}, number = {10}, publisher = {Wiley}, address = {Hoboken, NJ}, issn = {2169-8961}, doi = {10.1029/2024JG008549}, pages = {1 -- 18}, abstract = {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.}, language = {en} }