cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.1594/pangaea.930923
title: Experimental study on common starfish Asterias rubens to heatwaves and hypoxic upwelling: measured abiotics

description: Experimental study on the performance of the common starfish Asterias rubens subjected to heatwaves of different duration and amplitude (No, Present-day, Extended, Amplified and Amplified & Extended heatwave) followed by a hypoxic upwelling. The study was conducted at GEOMAR, Helmholtz-Centre for Ocean Research Kiel (54.329979 N, 10.148013 E) in the Indoor Benthocosms (Pansch and Hiebenthal 2019) over 63 days from July 10th until September 10th, 2018. The implemented treatments are based on a climatological analysis of a 15-year long data set (Pansch et al. 2018). The temperature was measured over the entire experimental period (TTX 110 type T, Ebro, Ingolstadt, Germany). Salinity, pH, and oxygen concentration were measured along with the simulated upwelling event (Multi 3630 IDS, WTW, Kaiserslautern, Germany).
DOI: 10.1594/pangaea.952903
title: Nitrous oxide concentrations during CHINARE 36 cruise 2020

description: The data set comprises concentrations of dissolved N2O from seawater samples collected during the 36th Chinese Antarctic Research Expedition (36th CHINARE). The 36th CHINARE took place onboard the research vessel/icebreaker Xuelong 2 between the 3rd and 31st of January 2020 and focused on physical and biogeochemical surveys of the Ross Sea (Pacific sector of the Southern Ocean). Samples were collected by drawing water from 10 L Niskin bottles (installed on a standard CTD-Rosette) into brown borosilicate 20 mL vials, which were then sealed with rubber (butyl) stoppers and aluminium caps. Immediately after collection, samples were preserved by adding 0.05 mL of a saturated mercuric chloride solution. Samples were analyzed by means of a standard headspace method coupled to gas chromatography/electron capture detection. Details on the measurement equipment and data analysis can be found in Kock et al. (2016; see: www.biogeosciences.net/13/827/2016/).
DOI: 10.1594/pangaea.930922
title: Experimental study on common starfish Asterias rubens to heatwaves and hypoxic upwelling: implemented treatments

description: Experimental study on the performance of the common starfish Asterias rubens subjected to heatwaves of different duration and amplitude (No, Present-day, Extended, Amplified and Amplified & Extended heatwave) followed by a hypoxic upwelling. The study was conducted at GEOMAR, Helmholtz-Centre for Ocean Research Kiel (54.329979 N, 10.148013 E) in the Indoor Benthocosms (Pansch and Hiebenthal 2019) over 63 days from July 10th until September 10th, 2018. The implemented treatments are based on a climatological analysis of a 15-year long data set (Pansch et al. 2018). The temperature was measured over the entire experimental period (TTX 110 type T, Ebro, Ingolstadt, Germany).
DOI: 10.1594/pangaea.930925
title: Experimental study on common starfish Asterias rubens to heatwaves and hypoxic upwelling: righting time

description: Experimental study on the performance of the common starfish Asterias rubens subjected to heatwaves of different duration and amplitude (No, Present-day, Extended, Amplified and Amplified & Extended heatwave) followed by a hypoxic upwelling. The study was conducted at GEOMAR, Helmholtz-Centre for Ocean Research Kiel (54.329979 N, 10.148013 E) in the Indoor Benthocosms (Pansch and Hiebenthal 2019) over 63 days from July 10th until September 10th, 2018. The implemented treatments are based on a climatological analysis of a 15-year long data set (Pansch et al. 2018). Starfish activity was measured as righting response (i.e., time needed for the starfish to turn back onto their oral side after being placed on their aboral side) before the beginning of the heatwave treatments, at the end of the heatwaves, before, during and at the end of the upwelling event, and at the end of the experiment.
DOI: 10.1594/pangaea.930924
title: Experimental study on common starfish Asterias rubens to heatwaves and hypoxic upwelling: feeding rate

description: Experimental study on the performance of the common starfish Asterias rubens subjected to heatwaves of different duration and amplitude (No, Present-day, Extended, Amplified and Amplified & Extended heatwave) followed by a hypoxic upwelling. The study was conducted at GEOMAR, Helmholtz-Centre for Ocean Research Kiel (54.329979 N, 10.148013 E) in the Indoor Benthocosms (Pansch and Hiebenthal 2019) over 63 days from July 10th until September 10th, 2018. The implemented treatments are based on a climatological analysis of a 15-year long data set (Pansch et al. 2018). Starfish feeding rate was quantified by measuring the shell length of consumed blue mussels (Dial Caliper DialMax Metric, Wiha Division KWB Switzerland).
DOI: 10.15468/dl.jnpxdh
title: Occurrence Download

description: A dataset containing 150 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is one of (Grazielia gaudichaudeana)",
 "HasCoordinate is true",
 "HasGeospatialIssue is false"
 ]
}

 The dataset includes 150 records from 36 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0030944-260208012135463/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.1594/pangaea.935756
title: Environmental vulnerability for 49 native fish species in the upper Danube River Basin

description: The data contains vulnerability estimates (climate niche factor analysis) for 49 native fish species in the upper Danube River basin. The upper Danube River basin is mainly located in Germany and Austria. The time frame covered is 300 years from 1800 to 2100 including two Representative Concentration Pathways, RCP 4.5 and RCP 8.5. Vulnerability estimates are calculated for three time frames (1800-1830; 1900-1930and 2070-2100 (including two RCPs)) with the time frame 1970-2000 as the baseline.
description: In all files the zone column gives the basin ID for the master basins layer. The mean column gives the mean vulnerability estimate for a sub-basin for a certain species. For the future scenarios the different predictions based on the different GCM-RCM combinations have to be combined using the median and the zone as unique identifier.
DOI: 10.1594/pangaea.953127
title: Abundances of stream benthic macroinvertebrates of a glacier-fed stream in South Tyrol, Italy (2016-2022)

description: Stream benthic macroinvertebrates have been collected for a period of 7 consecutive years (2016-2022, from April/May to September/October, during the glacial melting season) along a longitudinal transect of the Saldur stream, a near pristine glacier-fed stream located in South Tyrol, Italy (46°N, 10° E), part of the International Long Term Ecological Research (ILTER) network (site code: LTER_EU_IT_100). From year 2016 on, a small run-of-river (ROR) hydropower plant (max. 3,200 kW/year) started to operate on the stream, located in close proximity to site Saldur_2A. The potential impact on the riverine ecosystem was largely investigated, and resulted to be negligible. Extensive details on this topic can be found reading the scientific publications: Scotti et al. (2022; doi:10.3389/fenvs.2022.902603) and Scotti et al. (2022; doi:10.3389/fenvs.2022.904547).Organisms were collected through Surber samplings (0.0506 squared metres, mesh size 500 µm) in 3 sites at different elevation and distance from the glacial source: Saldur 1 (2,030 m a.s.l.; 4.962 km), Saldur 2A (2,016 m a.s.l.; 5.325 km), Saldur 3 (1,645 m a.s.l.; 11.123 km). In all sites, three different sub-samples were collected, and the main substrates present at each site were sampled (macrolithal - rocks of 20-40 cm, and mesolithal - rocks of 6-20 cm). Faunal nomenclature fully complies with Fauna Europaea standard (https://fauna-eu.org).More methodological details can be found in Scotti & Bottarin (2021; doi:10.1038/s41597-021-00887-x) and Scotti et al. (2019; doi:10.3897/BDJ.7.e33576). A similar dataset , with coarser taxonomic resolution, is available on PANGAEA covering the sampling on the same sites during years 2010-2015: Bottarin & Scotti (2019; doi:10.1594/PANGAEA.897915). Together with the present dataset, the time series now covers 13 years.
DOI: 10.1594/pangaea.930931
title: TemBi 2014 mesocosm study: Summer storm impact on sedimentation rates of particulate matter in Lake Stechlin

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. Water physical variables and water chemistry 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. Mixing stimulated phytoplankton growth, thus, resulting in a bloom of Dolichospermum sp. and thereafter increased biomass of Bacillariophyceae. Subsequent, break down of both phytoplankton groups resulted in higher particulate matter sinking fluxes of particulate organic carbon (POC), total particulate nitrogen (TPN) and total particulate phosphorous (TPP) 4-5 weeks after the disturbance event. Mixing resulted in average increases in elemental downward fluxes of 9% POC, 14% total particulate Nitrogen (TPN) and 19% TPP by the end of the experiment (42 days) (n.control=4, n.mixed=4).
DOI: 10.1594/pangaea.953135
title: Environmental variables of a glacier-fed stream in South Tyrol, Italy (2016-2022)

description: A set of environmental variables have been collected for a period of 7 consecutive years (2016-2022, from April/May to September/October, during the glacial melting season) along a longitudinal transect of the Saldur stream, a near pristine glacier-fed stream located in South Tyrol, Italy (46°N, 10° E), part of the International Long Term Ecological Research (ILTER) network (site code: LTER_EU_IT_100). From year 2016 on, a small run-of-river (ROR) hydropower plant (max. 3,200 kW/year) started to operate on the stream, located in close proximity to site Saldur_2A. The potential impact on the riverine ecosystem was largely investigated, and resulted to be negligible. Extensive details on this topic can be found reading the scientific publications: Scotti et al. (2022; doi:10.3389/fenvs.2022.902603) and Scotti et al. (2022; doi:10.3389/fenvs.2022.904547).The environmental variables measured (as spot-measurement) were: suspended solids (mL/L); specific conductance at 25° C (mS/cm), water temperature (°C), calculation of the bottom component of the Pfankuch index. Whilst only in 2018 turbidity (NFU) was measured instead of suspended solids, and all the measurements were conducted using a multiparameter meter (HI9829, Hanna Instruments), for all the remaining years suspended solids were measured after 30 minutes of water sedimentation in a Imhoff cone, and specific conductance through a portable conductimeter (Cond 7, XS Instruments). More methodological details can be found in Scotti & Bottarin (2021; doi:10.1038/s41597-021-00887-x).
DOI: 10.1594/pangaea.930999
title: TemBi 2014 mesocosm study: Summer storm impact on Zooplankton abundance in Lake Stechlin

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.
description: Method: 90 µm mesh size Apstein-cone, Utermöhl counting at 60x, TSO image analysis program (KIO VIDMESS-2011, Version 2.60.50, including a TSO-KST1003832 camera, TSO - Thalheim-Spezial-Optik-Gerätebau, Pulsnitz, Germany), biomass calculations from length-dry mass relationships (Bottrell et al. 1976; Kasprzak 1983).
DOI: 10.1594/pangaea.930933
title: TemBi 2014 mesocosm study: Summer storm impact on primary production rates and enzyme activities in Lake Stechlin

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. Primary production rates as well as exoenzyme activities (alkaline phosphatase, beta-glucosidase, leucine aminopeptidase) were monitored for 42 days after the experimental disturbance event by incubation of size-fractionated sample with H14CO3- and MUF substrate analogue assays, respectively. Mixing disrupted the thermal stratification, increased concentrations of dissolved nutrients and CO2 and changed light conditions in the epilimnion. Thus, mixing stimulated phytoplankton production, resulting in higher primary production rates within one week after mixing.
DOI: 10.1594/pangaea.930980
title: TemBi 2014 mesocosm study: Summer storm effect on phytoplankton community composition and functional groups in Lake Stechlin

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. Phytoplankton community composition and biomass of phytoplankton functional groups were monitored for 42 days after the experimental disturbance event in addition to water physical variables and water chemistry. Mixing disrupted the thermal stratification, increased concentrations of dissolved nutrients and CO2 and changed light conditions in the epilimnion. Mixing stimulated phytoplankton growth and changes phytoplankton community composition, resulting in higher biomass of Cryptophyceae (within one week after mixing), Nostocales (mainly Dolichospermum sp.; 2-3 weeks after mixing) and thereafter Bacillariophyceae (mainly Asterionella sp.).
description: Empty cells = NAUtermöhl counting on an inverted microscope at 100-1000x magnification, biomass was volumetrically estimated by geometrical approximations (Hillebrand et al. 1999; Utermöhl, 1958; Lund et al., 1958; Hepperle & Schmidt-Halewicz, 2000).
DOI: 10.1594/pangaea.930971
title: TemBi 2014 mesocosm study: Summer storm impact on water chemistry and physics in Lake Stechlin

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.
DOI: 10.1594/pangaea.987944
title: Methane and nitrous oxide dissolved gas concentrations from western Long Island Sound

description: This dataset contains methane and nitrous oxide dissolved gas concentration (this dataset), sea-air fluxes (https://doi.pangaea.de/10.1594/PANGAEA.987952), and ancillary hydrographic data from research cruises in western Long Island Sound occurring in August 2023, October 2023, and May 2024. Water samples for methane and nitrous oxide analysis were collected from Niskin bottles mounted on a CTD rosette. Water was collected into glass serum bottles and at least three volumes of water were allowed to flow through the sample before it was preserved and sealed with a butyl rubber stopper and aluminum crimp seal. Gas concentrations were determined using a headspace equilibration method and gas chromatograph with electron capture detector (for nitrous oxide) and flame ionization detector (for methane). Equilibrium dissolved concentrations were calculated from the measured temperature and salinity following the solubility equations of Wiesenburg and Guinasso (1979) for methane and Weiss and Price (1980) for nitrous oxide. Dry atmospheric concentrations were set to 2020 ppbv for methane and 338 ppbv for nitrous oxide and adjusted to 100% humidity. These concentrations are taken from preliminary surface flask results from Mashpee, Massachusetts, USA (station MSH) from the NOAA Carbon Cycle Greenhouse Gases group website (https://gml.noaa.gov/ccgg/) and represent the average over the three cruises (Dlugokencky et al., 2020b, a; Hall et al., 2007). Oxygen concentration was determined using an oxygen sensor mounted on the Niskin rosette, calibrated with discrete samples analyzed by Winkler titration (Langdon et al., 2010), which were also collected from the CTD rosette. The mixed layer depth was defined based on a potential density difference criterion of 0.125 kg/m³ relative to the shallowest measurement (either 2 or 3 m), using CTD profiles binned to 1 m. The 15-day weighted gas transfer velocities and fluxes are calculated using wind speeds measured over 15 days at 15-minute intervals prior to sampling using the data from NOAA buoy 44022 with weighting based on the fraction of the mixed layer ventilated during each time step following the method of Teeter et al. (2018) as described in the main manuscript of Manning et al. (2025) and software of Manning and Nicholson (2022).
DOI: 10.1594/pangaea.987952
title: Methane and nitrous oxide sea-air fluxes from western Long Island Sound

description: This dataset contains methane and nitrous oxide dissolved gas concentration (https://doi.pangaea.de/10.1594/PANGAEA.987944), sea-air fluxes (this dataset), and ancillary hydrographic data from research cruises in western Long Island Sound occurring in August 2023, October 2023, and May 2024. Water samples for methane and nitrous oxide analysis were collected from Niskin bottles mounted on a CTD rosette. Water was collected into glass serum bottles and at least three volumes of water were allowed to flow through the sample before it was preserved and sealed with a butyl rubber stopper and aluminum crimp seal. Gas concentrations were determined using a headspace equilibration method and gas chromatograph with electron capture detector (for nitrous oxide) and flame ionization detector (for methane). Equilibrium dissolved concentrations were calculated from the measured temperature and salinity following the solubility equations of Wiesenburg and Guinasso (1979) for methane and Weiss and Price (1980) for nitrous oxide. Dry atmospheric concentrations were set to 2020 ppbv for methane and 338 ppbv for nitrous oxide and adjusted to 100% humidity. These concentrations are taken from preliminary surface flask results from Mashpee, Massachusetts, USA (station MSH) from the NOAA Carbon Cycle Greenhouse Gases group website (https://gml.noaa.gov/ccgg/) and represent the average over the three cruises (Dlugokencky et al., 2020b, a; Hall et al., 2007). Oxygen concentration was determined using an oxygen sensor mounted on the Niskin rosette, calibrated with discrete samples analyzed by Winkler titration (Langdon et al., 2010), which were also collected from the CTD rosette. The mixed layer depth was defined based on a potential density difference criterion of 0.125 kg/m³ relative to the shallowest measurement (either 2 or 3 m), using CTD profiles binned to 1 m. The 15-day weighted gas transfer velocities and fluxes are calculated using wind speeds measured over 15 days at 15-minute intervals prior to sampling using the data from NOAA buoy 44022 with weighting based on the fraction of the mixed layer ventilated during each time step following the method of Teeter et al. (2018) as described in the main manuscript of Manning et al. (2025) and software of Manning and Nicholson (2022).
DOI: 10.1594/pangaea.903526
title: Temperature and light/dark treatment in Laminaria solidungula and Saccharina latissima from Kongsfjorden, Spitsbergen, during the polar night 2016/17

description: Change in laminarin contents in Saccharina latissima (lat) and Laminaria solidungula (sol) at time of sampling (Oct 2016; ini_) and after 14 days at different experimental temperatures (°C; 0_ / 4_ / 8_) in light/dark 12/12 (L), or continuous darkness (D).ini as the control group constitutes the same samples as analysed for the laminarin content of the respective centre regions in October (doi:10.1594/PANGAEA.903133). The number of replicates for the other groups was increased in order to reduce the high within-group variation, which was not possible for the ini-group.
DOI: 10.1594/pangaea.934081
title: Cold-season temperature parameters (average January and winter temperatures) in the northern permafrost zones of Russia for three different periods between 1930-2017

description: Distribution of the current mean January and mean winter temperatures near the places of determination of the isotopic composition of ice wedge veinlets for three periods: a) from 1930 to 1966, b) from 1967 to 2000, c) from 2001 to 2019 (after Vasilchuk, 1992 for the period 1930-1966). The values δ¹⁸O veinlets for the period of 1930-1966 years were used.
description: Funding was received from the Russian Science Foundation (Award nr. 19-17-00126, field studies and isotope analysis) and the Russian Foundation for Basic Research (Award nr. 18-05-60272, methodology of the study and calculations).
DOI: 10.1594/pangaea.922876
title: Element composition of core WDY1 from the Wangdongyang peatland, southeast China
DOI: 10.1594/pangaea.974382
title: Water column dissolved nitrous oxide concentrations during SONNE cruise SO298

description: The data set comprises concentrations of dissolved nitrous oxide (N2O) from seawater samples collected during the RV/Sonne cruise SO-298. The expedition took place between April 14th and June 2nd 2023, and focused on physical and biogeochemical conditions across the equatorial Pacific Ocean as part of the GEOTRACES program. Samples were collected by drawing water from a 10 L Niskin bottle into borosilicate 20 mL vials, which were then sealed with rubber (butyl) stoppers and aluminium caps. Immediately after collection, samples were preserved by adding 100 µL of a saturated mercuric chloride solution. Samples were analyzed by means of a standard headspace method coupled to gas chromatography/electron capture detection (see e.g. Wilson et al., 2018; https://doi.org/10.5194/bg-15-5891-2018).
DOI: 10.1594/pangaea.922878
title: Grainsize records of core WDY1 from the Wangdongyang peatland, southeast China