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  • Data  (9)
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  • 1
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    TemBi 2014 mesocosm study: Summer storm impact on Zooplankton abundance in Lake Stechlin (2021)
    PANGAEA
    Details
    Publication Date: 2024-03-08
    Description: We simulated an experimental summer storm in large-volume (~1200 m3, ~16m depth) enclosures in Lake Stechlin by mixing deeper water masses from the meta- and hypolimnion into the mixed layer (epilimnion). The mixing included the disturbance of a deep chlorophyll maximum (DCM) which was present at the same time of the experiment in Lake Stechlin and situated in the metalimnion of each enclosure during filling. Copepod and Cladocera biomass was monitored for 42 days after the experimental disturbance event (Utermöhl counting at 60x magnification and biomass calculation from length-dry mass relationships). Sampling was performed using a 90 µm mesh size Apstein-cone.
    Keywords: ArcTrain; BIBS; Bridging in Biodiversity Science; Cladocera, biomass, wet mass; Climate change; Climate driven Changes in Biodiversity of Microbiota; Copepoda, biomass, wet mass; cyanobacteria; DATE/TIME; Day of experiment; DCM; DEPTH, water; Description; disturbance; enclosure; Enclosure experiment; Germany; lake; Lake_Stechlin; mesocosm; Mesocosm label; NITROLIMIT; Oxygen/Nitrogen ratio; Processes and impacts of climate change in the North Atlantic Ocean and the Canadian Arctic; See description in dataset comment; Stickstofflimitation in Binnengewässern; summer storm; TemBi; Treatment; Zooplankton; Zooplankton, biomass, wet mass
    Type: Dataset
    Format: text/tab-separated-values, 2220 data points
    Location Call Number Expected Availability
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  • 2
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    TemBi 2014 mesocosm study: Summer storm effect on chlorophyll a development in Lake Stechlin (2021)
    PANGAEA
    Details
    Publication Date: 2024-03-08
    Description: We simulated an experimental summer storm in large-volume (~1200 m3, ~16m depth) enclosures in Lake Stechlin (https://www.lake-lab.de) by mixing deeper water masses from the meta- and hypolimnion into the mixed layer (epilimnion). The mixing included the disturbance of a deep chlorophyll maximum (DCM) which was present at the same time of the experiment in Lake Stechlin and situated in the metalimnion of each enclosure during filling. Size-fractionated (0.2-3 µm and 〉3.0 µm) chlorophyll a (Chla) development was monitored for 42 days after the experimental disturbance event. Mixing disrupted the thermal stratification, increased concentrations of dissolved nutrients and CO2 and changed light conditions in the epilimnion. Thereby, mixing increased the concentration of Chla of the small size fraction 0.2-3.0 within one week after mixing. After 2-3 weeks, mixing resulted in increased concentrations of Chla also in the large size fraction, which was associated to a bloom of Dolichospermums sp.
    Keywords: Acetone extraction from polycarbonate filters; fluorescence spectrophotometer (Hitachi F-7000, Tokyo, Japan); BIBS; Bridging in Biodiversity Science; chlorophyll; Chlorophyll a; Climate change; Climate driven Changes in Biodiversity of Microbiota; DATE/TIME; Day of experiment; DEPTH, water; Description; disturbance; Enclosure experiment; Germany; Lake_Stechlin; Mesocosm label; NITROLIMIT; Oxygen/Nitrogen ratio; Stickstofflimitation in Binnengewässern; TemBi; Treatment
    Type: Dataset
    Format: text/tab-separated-values, 2160 data points
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  • 3
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    Maximum ingestion and maximum clearance rate of Calanus finmarchicus determined experimentally (2014)
    PANGAEA
    Details
    Publication Date: 2024-01-26
    Keywords: Biomass as carbon per individual; C_finmarchicus_FEEDEXP; Clearance rate per individual; Ingestion rate of carbon per individual; Net; NET; Norwegian Sea; Taxon/taxa; Treatment: temperature; Uniform resource locator/link to reference
    Type: Dataset
    Format: text/tab-separated-values, 17 data points
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  • 4
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    TemBi 2014 mesocosm study: Summer storm impact on water chemistry and physics in Lake Stechlin (2021)
    PANGAEA
    Details
    Publication Date: 2024-03-22
    Description: We simulated an experimental summer storm in large-volume (~1200 m3, ~16m depth) enclosures in Lake Stechlin by mixing deeper water masses from the meta- and hypolimnion into the mixed layer (epilimnion). The mixing included the disturbance of a deep chlorophyll maximum (DCM) which was present at the same time of the experiment in Lake Stechlin and situated in the metalimnion of each enclosure during filling. Water physical variables and water chemistry was monitored for 42 days after the experimental disturbance event. Mixing disrupted the thermal stratification, increasing concentrations of dissolved nutrients and CO2 and changing light conditions in the epilimnion. Mixing, thus, stimulated phytoplankton growth, resulting in higher particulate matter concentrations of carbon, nitrogen and phosphorous.
    Keywords: Alkalinity, total; Ammonium; Ammonium molybdate reaction (FIASTAR 5000), (0.3 µm GF-75 prefiltered (Sterlitech)); BIBS; Bicarbonate ion; Bridging in Biodiversity Science; Calcium; Calcium carbonate; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, particulate; Carbon, organic, dissolved; Carbon, organic, particulate; Carbon, total, particulate; Carbonate ion; Carbon dioxide; Carbon dioxide, partial pressure; Chloride; Climate change; Climate driven Changes in Biodiversity of Microbiota; Conductivity, electrolytic; cyanobacteria; DATE/TIME; Day of experiment; DCM; DEPTH, water; Depth of Secchi Disk; Description; Difference derived from TPC and PIC; disturbance; ELTRA-800 (0.3 µm GF-75 filters (Sterlitech)); enclosure; Enclosure experiment; Flow-injection analyzer; Flow-injection analyzer (0.3 µm GF-75 prefiltered (Sterlitech)); Fugacity of carbon dioxide in seawater; Germany; High temperature combustion, infra-red detection (Shimadzu), (0.3 µm GF-75 prefiltered (Sterlitech)); Infralyt 50 (SAXON Junkalor GmbH), (0.3 µm GF-75 filters (Sterlitech)); Ion chromatography (Dionex), (0.3 µm GF-75 prefiltered (Sterlitech)); lake; Lake_Stechlin; Magnesium; mesocosm; Mesocosm label; Nitrate; Nitrite; Nitrogen, total; Nitrogen, total, particulate; Nitrogen, total dissolved; NITROLIMIT; Oxygen; Oxygen/Nitrogen ratio; Oxygen saturation; Oxygen sensor, YSI6560; PAR sensor Li-193SA, LI-COR Inc.; Peroxodisulfate oxidation method; Flow-injection analyzer; 0.3 µm GF-75 filters (Sterlitech); pH; Phosphorus, reactive soluble; Phosphorus, total; Phosphorus, total, particulate; Potassium; Pressure, technical; Radiation, photosynthetically active; SD; Secchi disk; Silicate, dissolved; Sodium; Stickstofflimitation in Binnengewässern; Sulfate; summer storm; TemBi; Temperature, air; Temperature, water; Titration; Treatment; Vaisala Weather station WXT520; water chemistry; water physics
    Type: Dataset
    Format: text/tab-separated-values, 10528 data points
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  • 5
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    Water isotope values in shore samples collected in March and July 2020 from northeastern German lake systems (2021)
    PANGAEA
    Details
    Publication Date: 2024-03-22
    Description: Water isotopes (δ2H and δ18O) were analyzed in samples collected in lakes associated to major riverine systems in northeastern Germany throughout 2020. This sub-dataset is derived from water samples collected from lake shores. Samples were taken in March and July 2020 with a pipette from 40-60 cm depth below water surface and directly transferred into a measurement vial. Stable isotope analysis was conducted at IGB Berlin, using a Picarro L2130-i cavity ring-down spectrometer. The data give information about the seasonal isotope amplitude in the sampled lakes and about spatial isotope variability in different branches of the associated riverine systems.
    Keywords: Breiter_Luzin; Breiter Luzin, Germany; Canower_See; Canower See, Germany; Cavity ring-down spectroscopy (CRDS), L21301i, Picarro Inc.; CONNECT; Connectivity and synchronization of lake ecosystems in space and time; Daemeritzsee; Dahme; Dahme, Germany; Dämeritzsee, Germany; DATE/TIME; DEPTH, water; Event label; Feldberger_Haussee; Feldberger Haussee, Germany; GEPRIS_418096356; Große_Krampe; Große Krampe, Germany; Großer_Priepertsee; Großer_See-Fürstenwerder; Großer Priepertsee, Germany; Großer See, Fürstenwerder, Germany; Havel; Influence of environmental factors onto the hydrogen isotopic signature of aquatic plants; Kleiner Müggelsee, Germany; Koelpinsee; Kölpinsee , Germany; Krewitzsee; Krewitzsee, Germany; Labussee; Labussee, Germany; Latitude of event; Longitude of event; Mellensee, Funkenhagen, Germany; Mellensee-Funkenhagen; Mueggelsee_a; Mueggelsee_b; Mueggelsee_inflow; Mueggelsee_outflow; Mueritz; Müggelsee, Germany; Müritz; Müritz, Germany; Oberrucker_See_Gr._Lanke; Oberrucker See (Gr. Lanke), Germany; Peetschsee; Peetschsee, Germany; Pipette; Raetzsee; Rätzsee, Germany; Schmaler_Luzin_a; Schmaler_Luzin_b; Schmaler Luzin, Germany; Schwarzer_See-Mirow; Schwarzer See, Mirow, Germany; Spree; Spree_a; Spree_b; Spree, Germany; Suckower_Haussee; Suckower Haussee, Germany; Ucker; Vilzsee; Vilzsee, Germany; Wrechener_See; Wrechener See, Germany; Zethnersee; Zethnersee, Germany; Zotzensee_a; Zotzensee_b; Zotzensee, Germany; δ18O; δ18O, water; δ18O, water, standard deviation; δ2H; δ Deuterium, water; δ Deuterium, water, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 204 data points
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  • 6
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    Water isotope values in time series samples (March - October 2020) collected at buoys deployed in northeastern German lake systems (2021)
    PANGAEA
    Details
    Publication Date: 2024-03-18
    Description: Water isotopes (δ2H and δ18O) were analyzed in samples collected in lakes associated to major riverine systems in northeastern Germany throughout 2020. This sub-dataset is derived from water samples taken at buoys temporarily installed in deep parts of the lake. Samples were taken monthly to bimonthly from March to October 2020. A Limnos water sampler was used to obtain samples from 1 m below water surface. Isotope analysis was conducted at IGB Berlin, using a Picarro L2130-i cavity ring-down spectrometer. Water temperatures were measured in similar depths with an Aqua TROLL 600 multiparameter sonde (In-Situ, Fort Collins, CO, USA). The data give information about the seasonal isotope amplitude in the sampled lakes and about spatial isotope variability in different branches of the associated riverine systems.
    Keywords: Breiter_Luzin_Buoy; Breiter Luzin, Germany; Cavity ring-down spectroscopy (CRDS), L2130-i, Picarro Inc.; Comment; CONNECT; Connectivity and synchronization of lake ecosystems in space and time; CT-probe Aqua TROLL 100; Dahme; DATE/TIME; Depth, bottom/max; DEPTH, water; Ellbogensee_Buoy; Ellbogensee, Germany; Event label; Feldberger_Haussee_Buoy; Feldberger Haussee, Germany; GEPRIS_418096356; Gr_Paelitzsee_north_Buoy; Großer_Labussee_Buoy; Großer_Lychensee_Buoy; Großer_Priepertsee_Buoy; Großer Labussee, Germany; Großer Lychensee, Germany; Großer Priepertsee, Germany; Groß Pälitzsee (north), Germany; Havel; Influence of environmental factors onto the hydrogen isotopic signature of aquatic plants; Kl_Paelitzsee_east_Buoy; Klein Pälitzsee (east), Germany; Labussee_Buoy; Labussee, Germany; LIMNOS water sampler; LIMNOSWS; Müritz; Röblinsee, Germany; Roeblinsee_Buoy; Schmaler_Luzin_Buoy; Schmaler Luzin, Germany; Spree; Stechlinsee_Buoy; Stechlinsee, Germany; Stolpsee_Buoy; Stolpsee, Germany; Temperature, water; Ucker; Useriner_See_Buoy; Useriner See, Germany; Vilzsee_Buoy; Vilzsee, Germany; Woblitzsee_Buoy; Woblitzsee, Germany; Zierker_See_Buoy; Zierker See, Germany; Ziernsee_Buoy; Ziernsee, Germany; Zotzensee_Buoy; Zotzensee, Germany; δ18O; δ18O, water; δ18O, water, standard deviation; δ2H; δ Deuterium, water; δ Deuterium, water, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 781 data points
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  • 7
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    Water isotope values from a spatial campaign conducted in four northeastern German lakes in September 2020 (2021)
    PANGAEA
    Details
    Publication Date: 2024-03-18
    Description: Water isotopes (δ2H and δ18O) were analyzed in samples collected in lakes associated to major riverine systems in northeastern Germany throughout 2020. This sub-dataset is derived from water samples taken at multiple spatially distributed spots in four selected lakes. A Limnos water sampler was used to obtain samples from 1 m below water surface on 29th and 30th September 2020. Isotope analysis was conducted at IGB Berlin, using a Picarro L2130-i cavity ring-down spectrometer.
    Keywords: Cavity ring-down spectroscopy (CRDS), L2130-i, Picarro Inc.; CONNECT; Connectivity and synchronization of lake ecosystems in space and time; Dahme; Depth, bottom/max; DEPTH, water; Depth of Secchi Disk; Ellbogensee_1; Ellbogensee_2; Ellbogensee_3; Ellbogensee_4; Ellbogensee_5; Ellbogensee_6; Ellbogensee, Germany; Event label; GEPRIS_418096356; Großer_Priepertsee_1; Großer_Priepertsee_2; Großer_Priepertsee_3; Großer_Priepertsee_4; Großer_Priepertsee_5; Großer_Priepertsee_6; Großer_Priepertsee_7; Großer Priepertsee, Germany; Havel; Influence of environmental factors onto the hydrogen isotopic signature of aquatic plants; Location; Müritz; Röblinsee, Germany; Roeblinsee_1; Roeblinsee_2; Roeblinsee_3; Roeblinsee_4; Roeblinsee_5; Roeblinsee_6; Spree; Ucker; Zierker_See_1; Zierker_See_2; Zierker_See_3; Zierker_See_4; Zierker_See_5; Zierker_See_6; Zierker See, Germany; δ18O; δ18O, water; δ18O, water, standard deviation; δ2H; δ Deuterium, water; δ Deuterium, water, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 171 data points
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  • 8
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    Dissolved organic matter composition from a large scale enclosure experiment (2020)
    PANGAEA
    Details
    Publication Date: 2024-04-20
    Description: During the summer of 2015, we reproduced three levels of browning and seven levels of nutrients using water from lake Stechlin (North-East Germany). We applied ultra-high-resolution mass-spectrometry and dissolved organic matter optical properties to retrieve the composition of the DOM at different levels of resolutions. Using a network analysis approach, we found that molecular formulas clustering together share a common origin.
    Keywords: Brownification; DOM; Enclosure experiment; FT-ICR-MS; Germany; Lake_Stechlin; nutrients
    Type: Dataset
    Format: text/plain, 3.6 MBytes
    Location Call Number Expected Availability
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  • 9
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    Water isotope values from northeastern German lake systems 2020 et seq (2021)
    PANGAEA
    Details
    Publication Date: 2024-04-23
    Description: Water isotopes (δ2H and δ18O) were analyzed in samples collected in lakes associated to major riverine systems in northeastern Germany throughout 2020. The dataset is derived from water samples taken at a) lake shores (sampled in March and July 2020); b) buoys temporarily installed in deep parts of the lake (sampled monthly from March to October 2020); c) multiple spatially distributed spots in four selected lakes (in September 2020); d) the outflow of Müggelsee (sampled biweekly from March 2020 to January 2021). At shores, water was sampled with a pipette from 40-60 cm below water surface and directly transferred into a measurement vial, while at buoys a Limnos water sampler was used to obtain samples from 1 m below surface. Isotope analysis was conducted at IGB Berlin, using a Picarro L2130-i cavity ring-down spectrometer. The data give information about the seasonal isotope amplitude in the sampled lakes and about spatial isotope variability in different branches of the associated riverine systems.
    Keywords: CONNECT; Connectivity and synchronization of lake ecosystems in space and time; Dahme; GEPRIS_418096356; Havel; Influence of environmental factors onto the hydrogen isotopic signature of aquatic plants; Müritz; Spree; Ucker; δ18O; δ2H
    Type: Dataset
    Format: application/zip, 6 datasets
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