cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.1594/pangaea.941194
title: Methane and nitrous oxide dissolved gas concentrations in seawater from the North American Arctic Ocean (2015–2018)

description: This dataset contains methane and nitrous oxide dissolved gas concentration, dissolved methane carbon isotope, and ancillary hydrographic data from research cruises in the North American Arctic Ocean between 2015-2018. Ocean 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 allowed to overflow three times before preserving with mercuric chloride and sealing with with butyl rubber stoppers and aluminum crimp seals. Gas concentrations were determined using a purge and trap system coupled to a gas chromatograph/mass spectrometer, following the method of Capelle et al. (2015). Equilibrium dry atmospheric concentrations were 328.25, 329.14, 330.11, and 330.96 ppb for N2O and 1919.64, 1933.67, 1934.92, and 1933.50 ppb for CH4 in 2015, 2016, 2017, and 2018, respectively. Equilibrium dissolved concentrations were calculated from the measured temperature and salinity following Wiesenburg and Guinasso (1979) for CH4 and Weiss and Price (1980) for N2O. Equilibrium concentrations were calculated based on sample temperature and salinity and the atmospheric N2O or CH4 concentrations measured at Barrow, Alaska by the NOAA Earth System Research Laboratory Global Monitoring Division (Dlugokencky et al., 2020a,b), with corrections to local sea level pressure and 100% humidity. Oxygen concentration was determined using an oxygen sensor mounted on the Niskin rosette, calibrated with discrete samples analyzed by Winkler titration. The mixed layer depth was defined based on a potential density difference criterion of 0.125 kg/m³ relative to the density at 5 m depth, using CTD profiles binned to 1 m. The mixed layer depth was set to 5 m as a minimum. For methane δ13C, samples were pre-concentrated through a purge and trap system (Finnigan PreCon Trace Gas Pre-Concentrator) and measured with a Finnigan Delta XP Plus mass spectrometer following the method of Damm et al. (2015).
DOI: 10.1594/pangaea.964705
title: Six years of air temperature and relative humidity time series along an elevational transect in the Italian Alps
DOI: 10.1594/pangaea.964701
title: Six years of wind time series along an elevational transect in the Italian Alps
DOI: 10.1594/pangaea.964704
title: Six years of soil water content time series along an elevational transect in the Italian Alps
DOI: 10.1594/pangaea.964703
title: Six years of soil water potential time series along an elevational transect in the Italian Alps
DOI: 10.1594/pangaea.965764
title: Multibeam bathymetry raw data (Kongsberg EM 122 entire dataset) of RV METEOR during cruise M191

description: Raw multibeam bathymetry data were collected aboard RV METEOR during cruise M191 using a Kongsberg EM 122 multibeam echosounder. The expedition took place during 16.07.2923 – 05.08.2023 from Algeciras (Spain) to Piraeus (Greece) in the Mediterranean. The main objective of M191 was to extensively map the seafloor (with multibeam echo sounder, sediment echo sounder, and towed magnetometer) and sample (by chain bag dredging) unexplored volcanic structures along the Sicilian Channel Rift Zone (Pantelleria-, Malta- and Linosa-Graben) and the Capo-Granitola-Sciacca Fault Zone (CGSFZ). Data were recorded in the Italian and Greek EEZ. Sound velocity profiles (SVP) were applied on the data for calibration. Please see environmental data and the cruise report for details. The data are unprocessed and can therefore contain incorrect depth measurements (artifacts) if not further processed. Note that refraction errors may occur when no proper SVP is applied. Acquisition and provision of the data are part of the DAM Underway Project and published according to the FAIR principles.
description: These data should not be used for navigational purposes.
DOI: 10.1594/pangaea.924969
title: Environmental coastal monitoring of carbonate chemistry parameters in 2015-2017, South-West Baltic Sea

description: This data set presents data from environmental coastal monitoring of carbonate chemistry parameters at the same 3 sites in the Baltic Sea over the course of 2 years. Poisoned water samples were analysed in laboratories in GEOMAR, Kiel and IOW, Rostock to understand the variation in carbonate chemistry and salinity and how this correlates with calcification rates of mussels in the field. These carbonate chemistry parameters were used to calculate aragonite saturation state (omega) and the ratio of calcification substrate to inhibitor (ESIR) to describe the environmental conditions relevant for calcification along the Baltic Sea salinity gradient.
DOI: 10.1594/pangaea.965771
title: Water column raw data (Kongsberg EM710 entire dataset) of RV METEOR during cruise M191

description: Raw water column data were collected aboard RV METEOR during cruise M191 using a Kongsberg EM 710 multibeam echosounder. The expedition took place during 16.07.2023 – 05.08.2023 from Algeciras (Spain) to Piraeus (Greece) in the Mediterranean. The main objective of M191 was to extensively map the seafloor (with multibeam echo sounder, sediment echo sounder, and towed magnetometer) and sample (by chain bag dredging) unexplored volcanic structures along the Sicilian Channel Rift Zone (Pantelleria-, Malta- and Linosa-Graben) and the Capo-Granitola-Sciacca Fault Zone (CGSFZ).Data were recorded in the Italian and Greek EEZ. Sound velocity profiles (SVP) were applied on the data for calibration. Please see environmental data and the cruise report for details. The data are unprocessed and can therefore contain incorrect depth measurements (artifacts) if not further processed. Note that refraction errors may occur when no proper SVP is applied. Acquisition and provision of the data are part of the DAM Underway Project and published according to the FAIR principles.
description: These data should not be used for navigational purposes.
DOI: 10.1594/pangaea.924951
title: Experiment on calcification rates in juvenile Baltic Sea Mytilus edulis trossulus mussels

description: This data set presents data from 2 month-long laboratory experiments conducted at GEOMAR, Kiel (Germany) where seawater bicarbonate ion concentrations were manipulated to investigate the effects of limited seawater carbon availability on calcification rates in juvenile Baltic Sea Mytilus edulis trossulus. Calcification rates (mass of calcium carbonate produced per unit time) was measured in 4 replicate tanks across 3 salinities and 5 bicarbonate ion concentrations to estimate the concentration at which bicarbonate ions start to limit calcification in the Baltic Sea at low salinities.
DOI: 10.1594/pangaea.973564
title: Hydrographic and Biogeochemical Profiles of Disco Bay: High-Resolution Nitrogen Cycling Experimental Data

description: This dataset presents high-resolution profiles of hydrographic and biogeochemical parameters, alongside results from incubation experiments and discrete measurements conducted in Disco Bay. Data were collected between August 16th and August 26 in 2022, capturing temporal variations in physical and biogeochemical conditions during this period. Key parameters recorded include temperature, salinity, dissolved oxygen, turbidity, and photosynthetically active radiation (PAR), obtained via a Conductivity-Temperature-Depth (CTD) profiler at varying depths (https://doi.pangaea.de/10.1594/PANGAEA.973563). To complement these measurements, incubation experiments were performed to assess nitrogen fixation rates, primary production, and both the production and consumption of nitrous oxide (N₂O) (this dataset). Discrete water samples were also collected for the analysis of nutrients, chlorophyll a (Chl a), and N₂O concentrations, enhancing our understanding of nutrient cycling and productivity in the Arctic marine environment. Data collection was conducted aboard the danish military vessel P540. The dataset was collected to investigate spatial and temporal variability in hydrographic properties, nitrogen fixation, and productivity, contributing to research on Arctic ecosystem dynamics and the impacts of climate change. Measurements are provided in .txt format. Each parameter was recorded with precision levels appropriate for capturing the region's natural variability, particularly in the vertical profiles of the water column. The dataset is expected to support research on Arctic oceanography and biogeochemistry, with applications for studies on climate change, nutrient cycling, and primary productivity. Standardized CTD and experimental protocols were followed to ensure data quality and consistency for comparability with other oceanographic datasets.
DOI: 10.25549/uschist-c104-279534
title: Student Union sculptures, USC, after 1927.

description: 16 photographs of terra cotta sculptures by Adolphe of Gladding-McBean on the exterior of the Student Union building, 3601 University Avenue, Los Angeles, California, USA, after 1927. Included are astronomy, entymology, singing (choir), fencing, fighting, geography, knights, drawing, monks, vaulting, dragon heads, monkeys, lucifer, bearded man's head, and a trojan head medallion.
DOI: 10.1594/pangaea.924979
title: Environmental costal monitoring of seawater calcium in 2015-2017, South-West Baltic Sea

description: This data set presents data from parallel environmental monitoring from the same 3 Baltic Sea sites using Star-Oddi mini CTD loggers. Salinity data was converted to calcium ion concentrations using published conversion factors for the Baltic Sea. This monitoring was implemented to understand natural levels of seawater calcium in South-West Baltic mussel reefs and how this impacts calcification.
DOI: 10.1594/pangaea.934079
title: Average cold-season temperature parameters and ratio to δ¹⁸O values in the northern permafrost zone of Russia for different periods between 1930-2017

description: The average parameters of cold-season temperature are presented for all stations in the northern permafrost zone of Russia for different periods in 1930-2017. Ratio of the temperature parameters (sum of winter Temperature, winter Temperature mean, Temperature January) to δ¹⁸O values is given for all stations on average (the coefficient Y in the equation Ti=Y⋅δ¹⁸O).
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.959689
title: Inorganic ion and metabolite concentrations in tissue of marine invertebrates exposed to low salinity in the laboratory

description: Laboratory experiments were conducted in the climate chambers at GEOMAR Helmholtz Centre for Ocean Research Kiel in the time between March and November 2018. Experiments were designed to study the effect of long-term (1 month) exposure to low salinity in osmoconforming invertebrates. The study organisms (Asterias rubens, Mytilus edulis, Littorina littorea, Diadumene lineata, Strongylocentrotus droebachiensis and Psammechinus milliaris) were collected in Kiel Fjord, Eckernförder Bight or the Kattegat from spring to autumn 2018. Organisms were acclimated to climate chamber conditions for 1 week (under habitat salinity, 14˚C, constant aeration) and then subjected to salinity acclimation for 1-2 weeks until the final salinity treatment level was reached. Then different salinity treatments were maintained for 4 weeks. Water physiochemistry (temperature, salinity, pH, nitrite, nitrate, phosphate) was recorded frequently. After the experiment, samples were taken from tissues to measure total osmolality (mosmol/kg) with an osmomat, and inorganic ions (mmol/kg or µmol/g wet mass). Anions were measured with a novel protocol via ion chromatography, cations were measured via flame photometry. Organic osmolytes were measured via 1H-NMR.
DOI: 10.1594/pangaea.967056
title: Net community production of Arctic mixed kelp communities in response to warming, freshening, and attenuated light: a mesocosm study as per minute record

description: Arctic marine ecosystems are experiencing rapid environmental changes with respect to warming, ice melt, and terrestrial run-off. The effects of these perturbations can act as multi-stressors where warming sea seawater, in combination with freshening from ice melt, and increased turbidity from terrestrial run-off affect benthic community structure and function. To examine the effects of warming, freshening, and turbidity on habitat forming macroalgae, we conducted a 2-month long ex situ experiment on mixed Arctic kelp communities in Ny-Ålesund, Svalbard from 03/07/2021 - 26/08/2021. Three experimental conditions (with 3x replicates) were tested against a dynamic real-time control where temperature was increased by + 3.3 and + 5.3 °C, salinity was reduced by ~ 4 and ~ 5, and irradiance was statically attenuated by ~ 25 and 40 % in 2 treatments. The third treatment was only warmed by + 5.3 °C from the control. In each 1 m³ mesocosm, oxygen (% O2), temperature, salinity, and photosynthetically active radiation (PAR) were continuously monitored. Mixed kelp communities comprised a biomass of ~ 4 kg fw (fresh weight) and ~ 500 g fw of small fauna. Weekly incubations were performed to calculate net community productivity (NCP) and used to estimate kelp benthic metabolism. We determined non-significant differences across treatments and provide NCP rates for mixed kelp communities in the Arctic.
DOI: 10.1594/pangaea.945306
title: KOSMOS Bergen 2015 mesocosm study: Hydrozoa, C. harengus, and Copepoda abundances and biomasses

description: To evaluate the influence of ocean acidification on predatory plankton, e.g. Hydrozoa and fish larvae as well as their interaction in complex natural communities, we deployed eight pelagic mesocosms for 53 days (Mai to July) in Raunefjord, Norway, and enclosed 60 m³ of local seawater containing a natural plankton community under post-bloom conditions. Four mesocosms were manipulated to simulate extreme pCO2 levels of 2069 µatm while the other four served as untreated controls. To investigate the interaction between Hydrozoa and fish larvae influenced by OA ee studied OA-induced changes at the top of the food web by following ≈2000 larvae of Atlantic herring (Clupea harengus) hatched inside each mesocosm during the first week of the experiment, and a Hydrozoa population that had already established inside the mesocosms. Organisms of both taxa inside and outside the mesocosms were measured over the course of the experiment in regular intervals. The data stems from 55µm and 500µm Apstein net hauls, subsequent microscopic analyses as well as carbon to nitrogen measurements. Under OA, we detected 20% higher abundance of hydromedusae staged jellyfish, but 25% lower biomass. At the same time, survival rates of Atlantic herring larvae were higher under OA (control pCO2: 0.1%, high pCO2: 1.7%) in the final phase of the study.
DOI: 10.1594/pangaea.963765
title: Inorganic and organic carbon survey in surface soils of a Wadden Sea mainland salt marsh 17 years after land-use change

description: Vegetated coastal ecosystems have been increasingly recognized for their capacity to sequester organic carbon in their soils and sediments under the term blue carbon. The vegetation of these habitats shows specific adaptations to severe abiotic soil conditions, particularly, waterlogging and salinity, and supports therefore ecosystem functioning and services. Wadden Sea salt marshes in Schleswig-Holstein (Germany) have been utilized for high density sheep grazing over centuries. At the beginning of the 1990s, in many parts of salt marshes livestock densities were reduced and the maintenance of the anthropogenic drainage system was ceased. In 2012, 17 years after the change of land utilization, the contents, densities, and accumulation rates of surface soil carbon were investigated at 50 sampling positions with different elevations along eight transects in Wadden Sea mainland salt marshes at Hamburger Hallig, Schleswig-Holstein, Germany, under different livestock grazing regimes (ungrazed, moderately grazed, intensively grazed). Surface soil was collected in 150 permanent plots (2 m * 2 m) at 50 sampling positions, covering a salt marsh area of 1050 ha. The carbon contents, pH, and bulk density were determined from dried soil. The elevations of the 150 permanent plots were measured and annual vertical accretion rates were calculated from 17 years sedimentation monitoring. This study was supported by the BASSIA project (Biodiversity, management, and ecosystem functions of salt marshes in the Wadden Sea National Park of Schleswig-Holstein), funded by the Bauer-Hollmann Foundation and Universität Hamburg.
description: The vegetation data, originally included in the raw data published in the Global Index of Vegetation Databases (http://www.givd.info/ID/EU-DE-033) by Stock (2012), has been transformed into percentage values through the normalization of Londo scale values (0.1, 0.2, 0.4, 1, 2, ..., 10) using plot cover (representing the percentage of plot area covered by vegetation); Species names nomenclature according to Wisskirchen et al. (1998), Standard List of Ferns and Flowering Plants of Germany, Eugen Ulmer Gmbh.
DOI: 10.1594/pangaea.961264
title: Sediment solid phase characteristics on the Amazon shelf obtained in April/May 2021 during RV METEOR cruise M174

description: The Amazon River is known as a region of intense biochemical reactivity. As a result of increased anthropogenic impacts in its catchment (e.g. population growth, agriculture, and deforestation), The Amazon River is undergoing fundamental changes. The RV METEOR cruise M174 (https://doi.org/10.1594/PANGAEA.935041) aimed to provide an integrated overview of nitrogen cycling processes in areas influenced by the Amazon River, which is crucial to estimate the ecosystem's health and productivity. During this cruise, a MUC was deployed at eight stations to collect short sediment cores, in order to explore the influence of the river on sediments. This dataset presents the results of sediment solid phase characteristics from the surface sediment down to 30 cm depth.
DOI: 10.1594/pangaea.971666
title: Shape files a data sheet for observed fluctuations of the Alerce glacier (1953-2020), North Patagonian Andes

description: Glaciers in the northern Patagonian Andes show the highest rate of loss of all the Andean regions for the last decade. Detailed records of long-term variations in glacier extent are crucial to put current climate change into context and quantify its impact on mountain areas. In this study presents a detailed reconstruction of the extent (length and area) of the Alerce Glacier (41.15° S-71.81° W) over the past 70 years (1953-2020). Glacier fluctuations were mapped using historical documents, aerial photography and satellite images from US KH-9 Hexagon, Landsat and Pléiades. Four distinct methodologies were applied to measure glacier front positions: i) central flow line, ii) curvilinear box, iii) multiline, and iv) variable box. Each method was assessed for its ability to capture the magnitude of front position variations accurately.
description: File descriptions: In this repository are the shapes with the extension of the Alerce glacier (Argentina) from 1953 to 2020 related whit the paper Recent fluctuations of the Alerce glacier (1953-2020), North Patagonian Andes doi:10.5027/andgeoV51n1-3644. In addition, there are glacier front fluctuations data according to each methodology.* Shapefile name: FluctuacionesAlerce_1953-2020* Data sheet: FrontChangesAlerce_1953_2020
DOI: 10.1594/pangaea.951519
title: Lebensplanung junger Frauen. Neue Optionen und alte Normalität. Transkripte der Interviews

description: DE: Transkripte und Protokolle der qualitativen Leitfadeninterviews, die im Zeitraum 1989-1990 mit 77 jungen Frauen (im Alter von 20-30 Jahre) geführt wurden, von denen insgesamt 52 für die Nachnutzung zur Verfügung stehen. Unterschiedliche Ausbildungswege (duales System, Vollzeitschule oder Ausbildungsmaßnahme sowie Umschulungsmaßnahmen - ohne Hochschulabsolventinnen) und verschiedenen Formen prekärer und regulärer Beschäftigung fanden Berücksichtigung. Von besonderem Interesse ist dabei die Arbeits- und Lebenssituation von jungen Frauen, die in unterschiedlicher Weise instabil, befristet, arbeits- und sozialrechtlich nicht abgesichert oder auch selbständig beschäftigt sind, und die Bedeutung dieser Beschäftigungsformen für ihre Berufsorientierung und Lebensplanung insgesamt. Durch das zentrale Konzept der Lebensplanung wurden die Frauen zur Bilanzierung und Kontextualisierung ihres bisherigen Lebens sowie zu Zukunftsplanungen angeregt. Dabei spielten neben Fragen zum beruflichen Umfeld insbesondere auch Fragen zu sozialen Beziehungen und Partnerschaften, Mutterschaft und gesellschaftlichen Rahmenbedingungen eine Rolle.EN: Transcripts and protocols of qualitative guided interviews conducted with 77 young women (aged 20-30 years) in the period 1989-1990, of which a total of 52 are available. Different training paths (dual system, full-time school or training programme as well as retraining measures - excluding university graduates) and different forms of precarious and regular employment were taken into account. Of particular interest here is the work and life situation of young women who are employed in various ways in unstable, temporary, unsecured employment or self-employment, and the significance of these forms of employment for their career orientation and life planning as a whole. The central concept of life planning encouraged the women to take stock of and contextualise their lives to date and to plan for the future. In addition to questions about their professional environment, questions about social relationships and partnerships, motherhood and social conditions also played a role.
description: Kontextmaterialien: Publikationen, Interviewleitfaden, Anonymisierungskonzept, Kontextinformationen zu anonymisierten Orten; Transcription method: Standardorthographie geglättet