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| Formato: | Dataset Open Access |
| Idioma: | en |
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PANGAEA
2023
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| Acesso em linha: | https://doi.org/10.1594/PANGAEA.941237 |
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| _version_ | 1867170476985417728 |
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| author | Oprei, Anna Schreckinger, José Kholiavko, Tatiana Frossard, Aline Mutz, Michael Risse-Buhl, Ute |
| author_facet | Oprei, Anna Schreckinger, José Kholiavko, Tatiana Frossard, Aline Mutz, Michael Risse-Buhl, Ute |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Sandy streambed sediments that had been exposed to either intense drying (90-day without rainfall) or bedform migration (periodically moving ripples) were placed in 250 µm mesh bags to the Spree River in Northeastern Germany on October 22, 2018, to initiate the recovery process from drying or migration stress. Subsamples from the recovering sediments were collected at eight dates within eight months and taken to the laboratory for further analysis. Community respiration and Net Community Production of sediment associated biofilms were measured as dissolved oxygen concentrations from sediment pore water in inundated microcosms. Potential extracellular enzyme activities (Beta-Glucosidase, Xylosidase, Chitinase, Phosphatase, Leucine-Aminopeptidase, Phenol-Oxidase, and Peroxidase) were assessed by measuring fluorescence and absorbance after extraction from sediments. Community abundance was assessed on a heterotrophic (amplified bacterial and fungal gene copies) and on an autotrophic level (Chlorophyll a concentration and diatom cell count). The aim of the experiment was to observe the long-term recovery of microbial communities in lowland streams from drying and bedform migration and to identify if stress effects persisted as legacy after the stress period. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_941237 |
| institution | PANGAEA |
| language | en |
| publishDate | 2023 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Long-term recovery of metabolism, enzyme activity and community abundance after drying and bedform migration in the Spree river 2018/2019 Oprei, Anna Schreckinger, José Kholiavko, Tatiana Frossard, Aline Mutz, Michael Risse-Buhl, Ute drought; EcoMigRip; microbial abundance; microbial community; Overlooked bed shift? Modulation of the stream microbial food web and metabolism by patches of migrating sand ripples; ripples; sediment transport; streambed metabolism Sandy streambed sediments that had been exposed to either intense drying (90-day without rainfall) or bedform migration (periodically moving ripples) were placed in 250 µm mesh bags to the Spree River in Northeastern Germany on October 22, 2018, to initiate the recovery process from drying or migration stress. Subsamples from the recovering sediments were collected at eight dates within eight months and taken to the laboratory for further analysis. Community respiration and Net Community Production of sediment associated biofilms were measured as dissolved oxygen concentrations from sediment pore water in inundated microcosms. Potential extracellular enzyme activities (Beta-Glucosidase, Xylosidase, Chitinase, Phosphatase, Leucine-Aminopeptidase, Phenol-Oxidase, and Peroxidase) were assessed by measuring fluorescence and absorbance after extraction from sediments. Community abundance was assessed on a heterotrophic (amplified bacterial and fungal gene copies) and on an autotrophic level (Chlorophyll a concentration and diatom cell count). The aim of the experiment was to observe the long-term recovery of microbial communities in lowland streams from drying and bedform migration and to identify if stress effects persisted as legacy after the stress period. |
| title | Long-term recovery of metabolism, enzyme activity and community abundance after drying and bedform migration in the Spree river 2018/2019 |
| topic | drought; EcoMigRip; microbial abundance; microbial community; Overlooked bed shift? Modulation of the stream microbial food web and metabolism by patches of migrating sand ripples; ripples; sediment transport; streambed metabolism |
| url | https://doi.org/10.1594/PANGAEA.941237 |