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  • 1
    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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  • 2
    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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  • 3
    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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  • 4
    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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  • 5
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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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  • 6
    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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  • 7
    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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  • 8
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    Unknown
    PANGAEA
    In:  Supplement to: Koutsodendris, Andreas; Lotter, André F; Kirilova, Emiliya P; Verhagen, Florence T M; Brauer, Achim; Pross, Jörg (2013): Evolution of a Holsteinian (MIS 11c) palaeolake based on a 12-ka-long diatom record from Dethlingen (northern Germany). Boreas, 42(3), 714-728, https://doi.org/10.1111/bor.12001
    Publication Date: 2024-04-25
    Description: To provide insights into the long-term evolution of aquatic ecosystems without human interference, we here evaluate a decadal- to centennial-scale-resolution diatom record spanning about 12 ka of the Holsteinian interglacial (Marine Isotope Stage 11c). Using a partially varved sediment core from the Dethlingen palaeolake (northern Germany), which has previously been studied for palynological and microfacies signals, we document the co-evolution of the aquatic and surrounding terrestrial environment. The diatom record is dominated by the genera Stephanodiscus, Aulacoseira, Ulnaria and Fragilaria. Based on the diatom assemblages and physical sediment properties, the evolution of the Dethlingen palaeolake can be subdivided into three major phases. During the oldest phase (lasting ~1900 varve years), the lake was ~10-15 m deep and characterized by anoxic bottom-water conditions and a high nutrient content. The following ~5600 years exhibited water depths 〉20 m, maximum diatom and Pediastrum productivity, and a peak in allochtonous nutrient input. During this phase, water-column mixing became more vigorous, resulting in a breakdown of anoxia. The youngest lake phase (~4000-5000 years) was characterized by decreasing water depth, turbulent water conditions and decreased nutrient loading. Based on our palaeolimnological data, we conclude that the evolution of the Dethlingen palaeolake during the Holsteinian interglacial responded closely to (i) changes within the catchment area (as documented by vegetation and sedimentation) related to the transition from closed forests growing on nutrient-rich soils (mesocratic forest phase) to open forests developing on poor soils (oligocratic forest phase), and (ii) short-term climate variability as reflected in centennial-scale climate perturbations.
    Type: Dataset
    Format: application/zip, 2 datasets
    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: Average temperature; Calculated; DEPTH, sediment/rock; Dethlingen; DRILL; Drilling/drill rig; Lower Saxony, Northern Germany; Precipitation, annual mean; Precipitation, annual mean, standard deviation; Temperature, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 1194 data points
    Location Call Number Limitation Availability
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