TY - GEN A1 - Frossard, Aline A1 - Gerull, Linda A1 - Mutz, Michael A1 - Gessner, Mark O. T1 - Shifts in microbial community structure and function in stream sediments during experimentally simulated riparian succession T2 - FEMS Microbiology Ecology KW - stream sediments Y1 - 2013 U6 - https://doi.org/10.1111/1574-6941.12072 SN - 0168-6496 VL - 84 IS - 2 SP - 398 EP - 410 ER - TY - CHAP A1 - Mutz, Michael A1 - Gessner, Mark O. A1 - Frossard, Aline A1 - Gerull, Linda ED - Hüttl, Reinhard F. ED - Kögel-Knabner, Ingrid ED - Schulin, Rainer ED - Gerwin, Werner T1 - C transformation and C accumulation during initial stream succession T2 - Structures and processes of the initial ecosystem development phase in an artificial water catchment : Final report CRC/TR 38 KW - Limnologie Y1 - 2013 U6 - http://nbn-resolving.de/urn/resolver.pl?nbn:de:kobv:co1-opus-28658 SN - 1867-7800 SP - 77 EP - 88 PB - Brandenburg Univ. of Technology CY - Cottbus ER - TY - GEN A1 - Frossard, Aline A1 - Gerull, Linda A1 - Mutz, Michael A1 - Gessner, Mark O. T1 - Fungal importance extends beyond litter decomposition in experimental early-successional streams T2 - Environmental Microbiology KW - streams Y1 - 2012 U6 - https://doi.org/10.1111/j.1462-2920.2012.02865.x SN - 1462-2920 VL - 14 IS - 11 SP - 2971 EP - 2983 ER - TY - GEN A1 - Frossard, Aline A1 - Gerull, Linda A1 - Mutz, Michael A1 - Gessner, Mark O. T1 - Disconnect of microbial structure and function: enzyme activities and bacterial communities in nascent stream corridors T2 - The ISME Journal KW - bacterial community structure KW - stream sediment Y1 - 2012 U6 - https://doi.org/10.1038/ismej.2011.134 SN - 1751-7362 VL - 6 SP - 680 EP - 691 ER - TY - GEN A1 - Gerull, Linda A1 - Frossard, Aline A1 - Gessner, Mark O. A1 - Mutz, Michael T1 - Variability of heterotrophic metabolism in small stream corridors of an early successional watershed T2 - Journal of Geophysical Research: Biogeosciences KW - Benthic processes Y1 - 2011 U6 - https://doi.org/10.1029/2010JG001516 SN - 2169-8961 VL - 116 IS - G2 ER - TY - GEN A1 - Gerull, Linda A1 - Frossard, Aline A1 - Gessner, Mark O. A1 - Mutz, Michael T1 - Effects of shallow and deep sediment disturbance on whole-stream metabolism in experimental sand-bed flumes T2 - Hydrobiologia KW - Whole-stream metabolism KW - San-bed streams Y1 - 2012 U6 - https://doi.org/10.1007/s10750-011-0968-x SN - 0018-8158 SN - 1573-5117 VL - 683 IS - 1 SP - 297 EP - 310 ER - TY - THES A1 - Gerull, Linda T1 - Dynamics of microbial metabolic activities during stream ecosystem succession : insights from field observations and flume experiments KW - metabolic activities KW - stream ecosystem Y1 - 2011 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:co1-opus-23500 ER - TY - GEN A1 - Risse-Buhl, Ute A1 - Hagedorn, Frank A1 - Dümig, Alexander A1 - Gessner, Mark O. A1 - Schaaf, Wolfgang A1 - Nii-Annang, Seth A1 - Gerull, Linda A1 - Mutz, Michael T1 - Dynamics, chemical properties and bioavailability of DOC in an early successional catchment T2 - Biogeosciences Discussion KW - DOC KW - bioavailability Y1 - 2013 SN - 1810-6285 VL - 10 IS - 1 SP - 1011 EP - 1049 ER - TY - GEN A1 - Risse-Buhl, Ute A1 - Hagedorn, Frank A1 - Dümig, Alexander A1 - Gessner, Mark O. A1 - Schaaf, Wolfgang A1 - Nii-Annang, Seth A1 - Gerull, Linda A1 - Mutz, Michael T1 - Dynamics, chemical properties and bioavailability of DOC in an early successional catchment T2 - Biogeosciences Y1 - 2013 U6 - https://doi.org/doi:10.5194/bg-10-4751-2013 SN - 1726-4189 VL - 10 SP - 4751 EP - 4765 ER - TY - CHAP A1 - Risse-Buhl, Ute A1 - Hagedorn, Frank A1 - Dümig, Alexander A1 - Gessner, Mark O. A1 - Schaaf, Wolfgang A1 - Nii-Annang, Seth A1 - Gerull, Linda A1 - Mutz, Michael ED - Jeltsch, Florian ED - Joshi, Jasmin T1 - Dynamics, chemical properties and bioavailability of DOC in an early successional catchment T2 - GfÖ 43rd Annual Meeting, Building bridges in ecology, linking systems, scales and disciplines, September 9 to 13, 2013, Potsdam, Germany N2 - The dynamics of dissolved organic carbon (DOC) have been intensively studied in mature ecosystems, but little is known about DOC dynamics and the significance of DOC as a substrate for microbial activity in early-successional catchments. We determined the concentration, chemical composition, radiocarbon age, and bioavailability of DOC along the hydrological flow path from soil solution to a downstream pond in a recently constructed catchment (Chicken Creek Catchment, Germany). Soil solution, upwelling ground water, subsurface water in an alluvial fan, and pond water all had high DOC concentrations (averaged 6.0 – 11.6 mg DOC L‐1), despite small carbon stocks in either vegetation or soil of the catchment. The mean 14C age of DOC in upwelling ground water was 2600 to 2800 years. Solid-state CPMAS 13C NMR revealed a higher proportion of aromatic compounds (32%) and a lower proportion of carbohydrates (33%) in upwelling ground water compared to pond water (18% and 45%, respectively). 14C age and 13C NMR spectra suggest that DOC was partly mobilized from charred organic matter inherent in the Quaternary substrate. In a 70-days incubation experiment, 20% of the total DOC was found to be bioavailable, irrespective of the water type. Origin of the microbial communities within the catchment (enriched from soil, stream sediment or pond water) had only marginal effects on overall DOC utilization. Overall, our data suggest that both recent and old DOC support microbial activity during early ecosystem succession, although a large fraction of the DOC is recalcitrant and eventually exported from the catchment once it has been mobilized. Y1 - 2013 SP - S. 377 PB - Gesellschaft für Ökologie CY - Berlin ER -