@misc{WonnerOpreiMutzetal., author = {Wonner, Tamara and Oprei, Anna and Mutz, Michael and Risse-Buhl, Ute}, title = {Is the epipsammic community modulated by trajectory of historic or current sediment shifting?}, 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 = {418}, language = {en} } @misc{ScheidweilerMendozaLeraMutzetal., author = {Scheidweiler, David and Mendoza-Lera, Clara and Mutz, Michael and Risse-Buhl, Ute}, title = {Overlooked Implication of Sediment Transport at Low Flow: Migrating Ripples Modulate Streambed Phototrophic and Heterotrophic Microbial Activity}, series = {Water Resources Research}, volume = {57}, journal = {Water Resources Research}, number = {3}, issn = {1944-7973}, doi = {10.1029/2020WR027988}, pages = {16}, language = {en} } @misc{KryvokhyzhynaMajdiOpreietal., author = {Kryvokhyzhyna, Mariia and Majdi, Nabil and Oprei, Anna and Mutz, Michael and Risse-Buhl, Ute}, title = {Response of meiobenthos to migrating ripples in sandy lowland streams}, series = {Hydrobiologia}, volume = {849}, journal = {Hydrobiologia}, number = {8}, issn = {0018-8158}, doi = {10.1007/s10750-022-04836-6}, pages = {1905 -- 1921}, language = {en} } @misc{RisseBuhlOpreiMutz, author = {Risse-Buhl, Ute and Oprei, Anna and Mutz, Michael}, title = {Migrating streambeds - ecological and biogeochemical consequences of fine sediment transport}, 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 = {192}, 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{RisseBuhlOpreiMutz, author = {Risse-Buhl, Ute and Oprei, Anna and Mutz, Michael}, title = {Streambed migration frequency drives ecology and biogeochemistry across spatial scales}, series = {WIREs Water}, volume = {10}, journal = {WIREs Water}, number = {3}, issn = {2049-1948}, doi = {10.1002/wat2.1632}, 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{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{RisseBuhlHagedornDuemigetal., author = {Risse-Buhl, Ute and Hagedorn, Frank and D{\"u}mig, Alexander and Gessner, Mark O. and Schaaf, Wolfgang and Nii-Annang, Seth and Gerull, Linda and Mutz, Michael}, title = {Dynamics, chemical properties and bioavailability of DOC in an early successional catchment}, series = {Biogeosciences}, volume = {10}, journal = {Biogeosciences}, issn = {1726-4189}, doi = {doi:10.5194/bg-10-4751-2013}, pages = {4751 -- 4765}, language = {en} } @inproceedings{RisseBuhlNiiAnnangHagedornetal., author = {Risse-Buhl, Ute and Nii-Annang, Seth and Hagedorn, Frank and Schaaf, Wolfgang and D{\"u}mig, Alexander and Schloter, Michael and Gessner, Mark O. and Mutz, Michael}, title = {Can old organic carbon drive microbial activity in surface waters of a newly created landscape?}, series = {Structures and processes of the initial ecosystem development, 1st International Conference assoc. with 4th Meeting of Young Researchers in Earth Sciences (MYRES), 20-24 Sept. 2010, Cottbus, Germany}, booktitle = {Structures and processes of the initial ecosystem development, 1st International Conference assoc. with 4th Meeting of Young Researchers in Earth Sciences (MYRES), 20-24 Sept. 2010, Cottbus, Germany}, publisher = {BTU}, address = {Cottbus}, pages = {S. 93}, language = {en} }