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  • 1
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    PANGAEA
    In:  Supplement to: Naeher, Sebastian; Smittenberg, Rienk H; Gilli, Adrian; Kirilova, Emiliya P; Lotter, André F; Schubert, Carsten J (2012): Impact of recent lake eutrophication on microbial community changes as revealed by high resolution lipid biomarkers in Rotsee (Switzerland). Organic Geochemistry, 49, 86-95, https://doi.org/10.1016/j.orggeochem.2012.05.014
    Publication Date: 2024-03-01
    Description: The effects of eutrophication on short term changes in the microbial community were investigated using high resolution lipid biomarker and trace metal data for sediments from the eutrophic Lake Rotsee (Switzerland). The lake has been strongly influenced by sewage input since the 1850s and is an ideal site for studying an anthropogenically altered ecosystem. Historical remediation measures have had direct implications for productivity and microbial biota, leading to community composition changes and abundance shifts. The higher sewage and nutrient input resulted in a productivity increase, which led predominantly to a radiation in diatoms, primary producers and methanogens between about 1918 and 1921, but also affected all microorganism groups and macrophytes between about 1958 and 1972. Bacterial biomass increased in 1933, which may have been related to the construction of a mechanical sewage treatment plant. Biomarkers also allowed tracing of fossil organic matter/biodegraded oil contamination in the lake. Stephanodiscus parvus, Cyclotella radiosa and Asterionella formosa were the dominant sources of specific diatom biomarkers. Since the 1850s, the cell density of methanogenic Archaea (Methanosaeta spp.) ranged within ca. 0.5-1.8 x 10**9 cells/g dry sediment and the average lipid content of Rotsee Archaea was ca. 2.2 fg iGDGTs/cell. An altered BIT index (BITCH), indicating changes in terrestrial organic matter supply to the lake, is proposed.
    Keywords: GC; Gravity corer; HYPOX; In situ monitoring of oxygen depletion in hypoxic ecosystems of coastal and open seas and land-locked water bodies; Lake_Rot; Rotsee, Switzerland
    Type: Dataset
    Format: application/zip, 6 datasets
    Location Call Number Limitation Availability
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  • 2
    Publication Date: 2024-03-01
    Keywords: Accumulation rate, diatoms per year; Achnanthes clevei; Achnanthes grana; Achnanthes lanceolata; Achnanthes minutissima var. minutissima; Age; Amphora pediculus; Asterionella formosa; Aulacoseira ambigua; Aulacoseira granulata; Aulacoseira italica; Cocconeis placentula var. euglypta; Cyclotella atomus; Cyclotella comensis; Cyclotella comta; Cyclotella delicatula; Cyclotella distinguenda; Cyclotella distinguenda var. unipunctata; Cyclotella kutzingiana; Cyclotella meneghiniana; Cyclotella ocellata; Cyclotella pseudostelligera; Cymbella affinis; Cymbella delicatula; Cymbella microcephala; Cymbella minutum; Cymbella prostrata; Cymbella silesiaca; Cymbella tumida; DEPTH, sediment/rock; Diatoma tenuis; Diploneis ovalis; Fragilaria arcus; Fragilaria biceps; Fragilaria capucina var. capucina; Fragilaria construens forma vaucheriae; Fragilaria crotonensis; Fragilaria delicatissima; Fragilaria fasciculata; Fragilaria pinnata; Fragilaria tenera; Fragilaria ulna; Fragilaria ulna var. acus; GC; Gomphonema acuminatum; Gomphonema angustatum; Gomphonema clavatum; Gomphonema parvulum; Gravity corer; Hantzschia amphioxys; HYPOX; In situ monitoring of oxygen depletion in hypoxic ecosystems of coastal and open seas and land-locked water bodies; Lake_Rot; Navicula capitatoradiata; Navicula cincta; Navicula cryptocephala; Navicula cryptotenella; Navicula decussis; Navicula gregaria; Navicula helensis; Navicula leptostriata; Navicula menisculus; Navicula pupula; Navicula radiosa; Navicula recens; Navicula tripunctata; Navicula trivialis; Nitzschia acicularioides; Nitzschia acicularoides; Nitzschia capitellata; Nitzschia dissipata var. dissipata; Nitzschia palea; Pinnularia microstauron; Puncticulata radiosa; Rotsee, Switzerland; Stephanodiscus alpinus; Stephanodiscus hantzschii; Stephanodiscus parvus; Tabellaria fenestrata
    Type: Dataset
    Format: text/tab-separated-values, 1224 data points
    Location Call Number Limitation Availability
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  • 3
    Publication Date: 2024-03-01
    Keywords: Bismuth, area, total counts; Bismuth, chi-square; Bismuth, standard deviation; Bromine, area, total counts; Bromine, chi-square; Bromine, standard deviation; Copper, area, total counts; Copper, chi-square; Copper, standard deviation; Date; DEPTH, sediment/rock; File name; Gallium, area, total counts; Gallium, chi-square; Gallium, standard deviation; GC; Gravity corer; HYPOX; In situ monitoring of oxygen depletion in hypoxic ecosystems of coastal and open seas and land-locked water bodies; Lake_Rot; Lead, area, total counts; Lead, chi-square; Lead, standard deviation; Molybdenum, area, total counts; Molybdenum, chi-square; Molybdenum, standard deviation; Nickel, area, total counts; Nickel, chi-square; Nickel, standard deviation; Niobium, area, total counts; Niobium, chi-square; Niobium, standard deviation; Rotsee, Switzerland; Rubidium, area, total counts; Rubidium, chi-square; Rubidium, standard deviation; Sample ID; Strontium, area, total counts; Strontium, chi-square; Strontium, standard deviation; Time, live; Time, real; Yttrium, area, total counts; Yttrium, chi-square; Yttrium, standard deviation; Zinc, area, total counts; Zinc, chi-square; Zinc, standard deviation; Zirconium, area, total counts; Zirconium, chi-square; Zirconium, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 93939 data points
    Location Call Number Limitation Availability
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  • 4
    Publication Date: 2024-03-01
    Keywords: Chlorin index; Chlorins; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; GC; Gravity corer; HYPOX; In situ monitoring of oxygen depletion in hypoxic ecosystems of coastal and open seas and land-locked water bodies; Lake_Rot; Rotsee, Switzerland; Sample code/label
    Type: Dataset
    Format: text/tab-separated-values, 200 data points
    Location Call Number Limitation Availability
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  • 5
    Publication Date: 2024-03-01
    Keywords: Carbon, inorganic, total; Carbon, organic, total; Carbon, organic/Nitrogen, total ratio; Carbon/Nitrogen ratio; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; GC; Gravity corer; HYPOX; In situ monitoring of oxygen depletion in hypoxic ecosystems of coastal and open seas and land-locked water bodies; Lake_Rot; Nitrogen, total; Rotsee, Switzerland; δ13C; δ15N
    Type: Dataset
    Format: text/tab-separated-values, 360 data points
    Location Call Number Limitation Availability
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  • 6
    Publication Date: 2024-03-01
    Keywords: Aluminium, area, total counts; Aluminium, chi-square; Aluminium, standard deviation; Barium, area, total counts; Barium, chi-square; Barium, standard deviation; Calcium, area, total counts; Calcium, chi-square; Calcium, standard deviation; Chloride, area, total counts; Chloride, chi-square; Chloride, standard deviation; Chromium, area, total counts; Chromium, chi-square; Chromium, standard deviation; Date; DEPTH, sediment/rock; File name; GC; Gravity corer; HYPOX; In situ monitoring of oxygen depletion in hypoxic ecosystems of coastal and open seas and land-locked water bodies; Iron, area, total counts; Iron, chi-square; Iron, standard deviation; Iron/Aluminium ratio; Lake_Rot; Manganese, area, total counts; Manganese, chi-square; Manganese, standard deviation; Manganese/Aluminium ratio; Phosphorus, area, total counts; Phosphorus, chi-square; Phosphorus, standard deviation; Potassium, area, total counts; Potassium, chi-square; Potassium, standard deviation; Rhodium, area, total counts; Rhodium, chi-square; Rhodium, standard deviation; Rotsee, Switzerland; Sample ID; Silicon, area, total counts; Silicon, chi-square; Silicon, standard deviation; Sulfur, area, total counts; Sulfur, chi-square; Sulfur, standard deviation; Time, live; Time, real; Titanium, area, total counts; Titanium, chi-square; Titanium, standard deviation; Vanadium, area, total counts; Vanadium, chi-square; Vanadium, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 117425 data points
    Location Call Number Limitation Availability
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  • 7
    Publication Date: 2024-03-01
    Keywords: Accumulation rate, total organic carbon per year; Accumulation rate per year; Density, dry bulk; DEPTH, sediment/rock; Fraction; GC; Gravity corer; HYPOX; In situ monitoring of oxygen depletion in hypoxic ecosystems of coastal and open seas and land-locked water bodies; Lake_Rot; Porosity; Rotsee, Switzerland
    Type: Dataset
    Format: text/tab-separated-values, 110 data points
    Location Call Number Limitation Availability
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  • 8
    Publication Date: 2024-04-25
    Keywords: Carbon, organic, total; DEPTH, sediment/rock; Dethlingen; DRILL; Drilling/drill rig; Element analyser CHN, LECO; Lower Saxony, Northern Germany; Nitrogen, total
    Type: Dataset
    Format: text/tab-separated-values, 202 data points
    Location Call Number Limitation Availability
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  • 9
    Publication Date: 2024-04-25
    Keywords: DEPTH, sediment/rock; Dethlingen; DRILL; Drilling/drill rig; Lower Saxony, Northern Germany; Mass spectrometry; Number of measurements; δ18O, opal; δ18O, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 150 data points
    Location Call Number Limitation Availability
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  • 10
    Publication Date: 2024-04-25
    Keywords: Achnanthes acares; Achnanthes biasolettiana; Achnanthes delicatissima; Achnanthes delicatula; Achnanthes distincta; Achnanthes exigua; Achnanthes lanceolata; Achnanthes minutissima; Achnanthes nitidiformis; Achnanthes saccula; Amphora copulata; Amphora fogediana; Amphora ovalis; Amphora pediculus; Amphora veneta; Asterionella formosa; Astrionella ralfsii; Aulacoseira ambigua; Aulacoseira granulata; Aulacoseira italica; Aulacoseira subarctica; Caloneis undulata; Cocconeis disculus; Cocconeis neodiminuta; Cocconeis placentula; Counting, diatoms; Cyclostephanodiscus dubius; Cyclotella antiqua; Cyclotella bodanica; Cyclotella comta; Cyclotella cyclopuncta; Cyclotella ocellata; Cyclotella schumannii; Cymbella caespitosa; Cymbella cesatii; Cymbella cuspidata; Cymbella elgenensis; Cymbella hustedtii; Cymbella mesiana; Cymbella minuta; Cymbella proxima; Cymbella silesiaca; Cymbella veneta; DEPTH, sediment/rock; Dethlingen; Diatoma sp.; Diatoms; DRILL; Drilling/drill rig; Epithemia adnata; Epithemia frickei; Epithemia sorex; Eunotia pirla; Eunotia sp.; Fragilaria bicapitata; Fragilaria biceps; Fragilaria brevistriata; Fragilaria capensis; Fragilaria capucina; Fragilaria construens; Fragilaria delicatissima; Fragilaria exigua; Fragilaria lanceolata; Fragilaria leptostauron; Fragilaria neoproducta; Fragilaria nitzschioides; Fragilaria pinnata; Fragilaria pseudoconstruens; Fragilaria tenera; Gomphonema affine; Gomphonema clavatum; Gomphonema minutiforme; Gomphonema minutum; Gomphonema parvulum; Gomphonema truncatum; Lower Saxony, Northern Germany; Navicula absoluta; Navicula accomoda; Navicula capitata; Navicula cari; Navicula cincta; Navicula clementioides; Navicula constans; Navicula costulata; Navicula crucicula; Navicula elgenensis; Navicula ignota; Navicula lanceolata; Navicula lesmonensis; Navicula menisculus; Navicula meniscus; Navicula minima; Navicula phyllepta; Navicula placentula; Navicula pseudocutiformis; Navicula pseudotuscula; Navicula pupula; Navicula scutelloides; Navicula seminulum; Navicula splendicula; Navicula striolata; Navicula subminuscula; Navicula subplacentula; Navicula subronstulata; Navicula tuscula; Navicula veneta; Navicula vitabunda; Nitzschia sp.; Opephora olsenii; Pinnularia intermedia; Stephanodiscus alpinus; Stephanodiscus hantzschii; Stephanodiscus medius; Stephanodiscus minutulus; Stephanodiscus parvus; Stephanodiscus rotula; Tabellaria flocculosa; Tetracyclus emarginatus; Tetracyclus glans; Ulnaria ulna
    Type: Dataset
    Format: text/tab-separated-values, 14250 data points
    Location Call Number Limitation Availability
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