cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.1594/pangaea.925024
title: Geochemistry of coastal wetland in the Northern Saharan environment through lacustrine sediment core THI

description: The core was collected manually from a boat employing a gravity core sampler. The core was sliced every two centimeters in the field, packed in individual identified plastics bags, and kept refrigerated. The THI sediment core (N 27°59.139, W 12°17.109), located in the inner portion of the Lagoon, was retrieved from a secondary channel, having 52 cm of length. The salinity measured at the site on the day of the sampling was 50 PSU, thus revealing a saline gradient that increases towards the upstream, probably due to a longer residence time of the water and consequent higher evaporation rate at that site. To its right side, the secondary channel is protected by a desert plateau, while to its left lays a saltmarsh area, occupied by specimens of the genus Salicornia sp., that are periodically exposed by tidal dynamics. A low marine influence characterizes this part of the Lagoon, depths between 2.70 m and 5.20 m, during low and high tides, respectively, and surrounded by extensive heterogeneous marshes. Aiming the recognition of the environmental changes at this point of the lagoon, we have performed the following measurements in the core's sediments: dating (210Pb and 137Cs calibration), sedimentation rate, mean grainsize, Chlorophyll, Total Organic Carbon (TOC), C/N, Sr/Ca and Si/Ti elemental ratios.
DOI: 10.1594/pangaea.925025
title: Geochemistry of coastal wetland in the Northern Saharan environment through lacustrine sediment core THIll

description: The core was collected manually from a boat employing a gravity core sampler. The core was sliced every two centimeters in the field, packed in individual identified plastics bags, and kept refrigerated. The THIII sediment core (N 28°01.626, W 12°16.558), measuring 48 cm, was recovered in one of the sections of the main water entrance channel in the Lagoon. This site is approximately seven meters deep and lies between two islets of exposed sediment dominated by marine grass specimens of *Zostera noltii*. During the sampling, salinity at the site was 40 PSU (Practical Salinity Unit). Due to its proximity to the inlet, this site is highly influenced by the seawater entrance and ocean nutrients. Aiming the recognition of the environmental changes at this point of the lagoon, we have performed the following measurements in the core's sediments: isotopic ratio of C, dating (210Pb and 137Cs calibration), sedimentation rate, mean grain size, Chlorophyll, Total Organic Carbon (TOC), C/N elemental ratio and C/S elemental ratio.
DOI: 10.1594/pangaea.936722
title: Nitrous oxide from water samples during METEOR cruise M99

description: Upward transport and/or mixing of trace gas-enriched subsurface waters fosters the exchange of nitrous oxide (N2O) and methane (CH4) with the atmosphere in the Eastern-South Atlantic (ESA). To date, it is, however, unclear whether this source is maintained by local production or advection of trace-gas enriched water masses. So, the meridional and zonal variability of N2O and CH4 in the ESA were investigated to constrain the contributions of the major regional water masses to the overall budget of N2O and CH4. The fieldwork took place during the cruises M99 (July 31st - August 23rd, 2013) and M120 (October 17th - November 18th, 2015) onboard the R/V METEOR, which encompassed close-coastal and open ocean regions off Angola and Namibia. To investigate the regional concentration gradients of N2O and CH4 and corresponding sea-air fluxes, seven hydrographic sections (six zonal transects and one alongshore transect) were conducted between ~10°S and 26°S. Concentrations of dissolved N2O and CH4 in surface waters were continuously measured by using the Mobile Equilibrator Sensor System. To evaluate, the oceanic-atmospheric trace gas exchange, the atmospheric N2O and CH4 in ambient air were measured at several sporadic locations, with an inlet installed at 35 m height. The data were quality controlled by comparing with the data generated by NOAA in the nearest atmospheric sampling station (23.58° S, 15.03°E, Station NMB (Gobabeb, Namibia)). Also, to better understand the underlying patterns of the trace gas in the ESA, the vertical profiles were investigated by measuring discrete samples of N2O using the dynamic headspace method on M99. N2O and CH4 concentrations were also measured using a purge and trap system during M120 expedition.
DOI: 10.1594/pangaea.925345
title: Carbon and nitrogen signatures nature at the different layers from sediment cores THI and THIII

description: Aiming at a better recognition of the carbon and nitrogen signatures nature at the different layers in the sediment core in the lake, and avoid using generic ranges for these isotopes, the local vegetation specimens, based on the vegetation list of the Khnifiss National Park, were collected and analyzed for their elemental and isotopic analysis of C and N.
DOI: 10.1594/pangaea.971339
title: Photosynthetically active radiation treatment for Arctic kelps
DOI: 10.1594/pangaea.919118
title: Mesocosm experiment on sea stars and mussels, experimental conditions: temperature, salinity and pH
DOI: 10.1594/pangaea.919207
title: Mesocosm experiment on sea stars and mussels, experimental conditions: seawater flow rate
DOI: 10.1594/pangaea.919202
title: Mesocosm experiment on sea stars and mussels: sea stars weight parameters
DOI: 10.1594/pangaea.919203
title: Mesocosm experiment on sea stars and mussels: barnacle area
DOI: 10.1594/pangaea.936687
title: N2O and CH4 underway measurements (atmosphere and ocean) during METEOR cruise M120

description: Upward transport and/or mixing of trace gas-enriched subsurface waters fosters the exchange of nitrous oxide (N2O) and methane (CH4) with the atmosphere in the Eastern-South Atlantic (ESA). To date, it is, however, unclear whether this source is maintained by local production or advection of trace-gas enriched water masses. So, the meridional and zonal variability of N2O and CH4 in the ESA were investigated to constrain the contributions of the major regional water masses to the overall budget of N2O and CH4. The fieldwork took place during the cruises M99 (July 31st - August 23rd, 2013) and M120 (October 17th - November 18th, 2015) onboard the R/V METEOR, which encompassed close-coastal and open ocean regions off Angola and Namibia. To investigate the regional concentration gradients of N2O and CH4 and corresponding sea-air fluxes, seven hydrographic sections (six zonal transects and one alongshore transect) were conducted between ~10°S and 26°S. Concentrations of dissolved N2O and CH4 in surface waters were continuously measured by using the Mobile Equilibrator Sensor System. To evaluate, the oceanic-atmospheric trace gas exchange, the atmospheric N2O and CH4 in ambient air were measured at several sporadic locations, with an inlet installed at 35 m height. The data were quality controlled by comparing with the data generated by NOAA in the nearest atmospheric sampling station (23.58° S, 15.03°E, Station NMB (Gobabeb, Namibia)). Also, to better understand the underlying patterns of the trace gas in the ESA, the vertical profiles were investigated by measuring discrete samples of N2O using the dynamic headspace method on M99. N2O and CH4 concentrations were also measured using a purge and trap system during M120 expedition.
DOI: 10.1594/pangaea.919242
title: Mesocosm experiment on sea stars and mussels: mussel condition index
DOI: 10.1594/pangaea.938482
title: Methane, liquid petroleum gas, smoke, carbon monoxide and propan obtained during the pandemic period in Ankara, Turkey

description: Project:Analysis Results of Green House Gas and Meteorology Data Obtained During Pandemic Period, Award: 20401076
DOI: 10.1594/pangaea.938484
title: Meteorology measurements during the pandemic period in Ankara, Turkey

description: Project:Analysis Results of Green House Gas and Meteorology Data Obtained During Pandemic Period, Award: 20401076
DOI: 10.1594/pangaea.938485
title: Ammonia, carbon monoxide, nitrogen dioxide, ozone and chlorine obtained during the pandemic period in Ankara, Turkey

description: Project:Analysis Results of Green House Gas and Meteorology Data Obtained During Pandemic Period, Award: 20401076
DOI: 10.1594/pangaea.973563
title: Hydrographic and Biogeochemical Profiles of Disco Bay: High-Resolution CTD Measurements

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 (this dataset). 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) (https://doi.pangaea.de/10.1594/PANGAEA.973564). 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: 10.1594/pangaea.904564
title: Trace element ratios of nearshore Porites coral from Herald Island (1996-2015)

description: Preliminary ages were assigned to sample datasets by assigning seasonal trace element ratios minima and maxima in datasets to warmest and coolest months in satellite SST records and then linearly interpolating in-between
DOI: 10.1594/pangaea.983306
title: Visionen und Best Practices für die digitale Transformation: Visionäre Handlungsorientierungen für die Technikgestaltung in der gewerkschaftlichen Praxis. Transkripte der Interviews

description: DE: Das Forschungsprojekt "Visionen und Best Practices für die digitale Transformation - Visionäre Handlungsorientierungen für die Technikgestaltung in der gewerkschaftlichen Praxis" wurde von Januar 2022 bis Juni 2025 im Rahmen des Forschungsverbunds Digitale Transformation durchgeführt. Es wurden Praktiken und Modelle demokratischer, beschäftigtenorientierter Technikpolitik im Betrieb untersucht, um sie für die gewerkschaftliche Praxis nutzbar zu machen. Insgesamt wurden 54 problemzentrierte Interviews in 20 Fällen geführt. Die Daten wurden über leitfadengestützte, halbstandardisierte Interviews erhoben. Der für die wissenschaftliche Nachnutzung archivierte Datensatz umfasst 37 Interviewtranskripte.EN: The research project 'Visions and best practices for the digital transformation. Visionary strategies for worker-led technology design' was conducted from January 2022 to June 2025 in the framework of the research alliance Digital Transformation. It investigated practices and models of democratic, worker-orientated technology policy in the workplace in order to make them usable for trade union practice. A total of 54 problem-centred interviews were conducted in 20 cases. The data was collected using guideline-based, semi-standardised interviews. The data set archived for scientific reuse comprises 37 interview transcripts.
description: Embargo: Es besteht eine Sperrfrist bis zum 31.12. 2025. Zwei der Interviewtranskripte (Fälle: C5; L1) sind nur für die Onsite-Nachnutzung zugelassen.
DOI: 10.1594/pangaea.972523
title: Foreign Policy Attitudes of US-American Elites. Transcripts of Expert Interviews

description: EN: This dataset comprises expert interviews conducted 2017 in the USA (Washington D.C.) and 2011 in Germany (Berlin). The study investigated the grand strategy imperatives of foreign policy experts in the U.S. from the executive branch, congress, think tanks, media, and academia in Washington, D.C. in response to President Donald Trump's nationalist challenge to the post-Second World War international order concept. It also surveys these elite's attitudes about transatlantic relations, trends in world politics, and foreign policy determinants of U.S. foreign policy. The 37 English-language expert interviews were mostly conducted in Washington, D.C. and have been archived for scientific secondary uses in research and academic teaching.DE: Dieser Datensatz umfasst englischsprachige Expert:inneninterviews, die im Jahr 2017 in den USA (Washington D.C.) durchgeführt wurden. Die Studie erhob grundlegende außenpolitische Einstellungen amerikanischer Entscheidungsträger:innen und Expert:innen der Exekutive, des Kongresses, aus Think Tanks, Medien und Universitäten zu Reaktionen auf die Infragestellung zentraler Pfeiler der internationalen Weltordnung nach dem zweiten Weltkrieg durch Präsident Donald Trump. Weitere Fragen betreffen ihre Einstellungen zu transatlantischen Beziehungen, Trends in der Weltpolitik, zur Rolle militärischer Zurückhaltung, Bündnissolidarität, Multilateralismus und der Einhaltung von Werten in der Außenpolitik. Die 37 englischsprachigen Expert:inneninterviews wurden größtenteils in Washington D.C. durchgeführt und stehen für die wissenschaftliche Nachnutzung in Forschung und Lehre zur Verfügung.
description: These interview transcripts are available for scientific reuse. Due to increased sensitivity, 3 of the English-language transcripts are only available for on-site use at the RDC Qualiservice.
DOI: 10.1594/pangaea.987462
title: Caucasus glaciers debris cover inventory for 2000 and 2020

description: The current stage of glaciation degradation is also manifested in the intensification of the input of lithogenic material to the glacier surface. Surface deposits significantly affect the ablation of glacier ice, which directly affects the glacier runoff and the glacier mass balance. For the entire Greater Caucasus, the moraine boundaries were determined using semi-automated methods [Scherler et al., 2018; Herreid & Pellicciotti, 2020; Tielidze et al., 2024, etc.]. This database presents the results of manual interpretation of the moraine cover boundaries as of 2000 (according to Landsat-7 data) and 2020 (Sentinel-2). The buffer method was used to assess the accuracy of determining the area of moraine-covered ice. As a result, from 2000 to 2020, the number of glaciers with noticeable moraine cover increased from 763 (34% of the number of glaciers in the Caucasus) to 1274 (58%), and their area - from 132.5 ± 8.6 km² (8-9% of the glacier area) to 163.9 ± 5.9 km² (14-15%). Due to the active degradation of glaciation, the activity of the lithogenic material input from the rocky surroundings of glaciers increased. The gradual rise of the kinematic boundary of the supply of glaciers in the Caucasus, characteristic of the modern evolutionary stage, leads to a characteristic tendency: over time, the melting of the first portions of moraine material along the flow line onto the daytime surface of the glacier is recorded higher and higher upstream, which is what we see when comparing 2000 and 2020 debris. The projection of the moraine cover during the retreat of glaciers often leads to the damming of the periglacial area and the formation of dangerous lakes.
description: Shapefile - contours of debris cover on glaciers (2000 based on RGI-7 catalogue for Caucasus, 2020 - on (Tielidze et al., 2018; Tielidze et al. 2022)) in WGS 1984 UTM 38N coordinate system. Attribute table contains: author ID, related-glaciers № and ID (RGI, WGI, other ID's), area as in year 2000 and 2020, river basin, Caucasus section (North or South, West-Central-East).
DOI: 10.1594/pangaea.972522
title: Außenpolitische Einstellungen deutscher Eliten. Transkripte der Expert:inneninterviews

description: DE: Dieser Datensatz umfasst deutsch- und englischsprachige Expert:inneninterviews, die im Jahr 2011 in Deutschland (Berlin) und 2017 in den USA (Washington D.C.) durchgeführt wurden. Die Studie erhob grundlegende außenpolitische Einstellungen deutscher und amerikanischer Entscheidungsträger:innen und Expert:innen der Exekutive, des Bundestags, aus Think Tanks, Medien und Universitäten zum Libyen-Beschluss des UN-Sicherheitsrats im März 2011, sowie zu ihren Einstellungen zu transatlantischen Beziehungen, Trends in der Weltpolitik, der Rolle militärischer Zurückhaltung, Bündnissolidarität, Multilateralismus und der Einhaltung von Werten, sowie anderen außenpolitischen Regeln der deutschen Außenpolitik. Die 72 deutschsprachigen Expert:inneninterviews wurden größtenteils in Berlin durchgeführt und stehen für die wissenschaftliche Nachnutzung in Forschung und Lehre zur Verfügung.EN: This dataset comprises expert interviews which were conducted in 2017 in the USA (Washington D.C.) and 2011 in Germany (Berlin). The study investigated the grand strategy imperatives of foreign policy experts in Germany from the executive branch, congress, think tanks, media, and academia in Washington, D.C. in response to the Lybia resolution of the UN Security Council in March 2011. It also surveys the elite's attitudes about transatlantic relations, trends in world politics, and foreign policy determinants of U.S. foreign policy. The 72 german-languaged expert interviews were mostly conducted in Berlin and have been archived for scientific secondary uses in research and teaching.
description: Die Interviewtranskripte stehen für die wissenschaftliche Nachnutzung zur Verfügung. Aufgrund erhöhter Sensibilitätsgrade werden 22 der deutschspachigen Transkripte nur für die Onsite-Nutzung verfügbar sein.
DOI: 10.1594/pangaea.947704
title: Seagrass blue carbon stocks in the German Baltic Sea

description: A total of 169 sediment cores (30 cm length; 5.5 cm inner diameter) were sampled in seagrass meadows (n = 110 cores) and nearby unvegetated sediments (n = 59 cores). Nine cores (with some exceptions) were collected at each site, from three sublocations: (1) in the high-density part of the meadow ("dense seagrass" hereafter), (2) low density or fringe of the meadow ("sparse seagrass" hereafter), and (3) adjacent unvegetated sediments at least 5 m from seagrass ("unvegetated"). Dense and sparse seagrass sublocations are collectively referred to as "seagrass-vegetated" sediments or sublocations. Sediment cores taken within the seagrass meadow were sampled at least 10 m apart from each other. Several biophysical parameters were collected alongside each core, including seawater depth, sediment grain size, current velocity at the seafloor, and seagrass complexity. The measure of "seagrass complexity" was defined as the product of seagrass canopy height and shoot density, to obtain the sum of leaf heights within a unit of area (in m/m2). Cores were collected between 1 and 5 m seawater depth manually via self-contained underwater breathing apparatus (SCUBA) divers pounding impact-resistant PVC tubes into the sediment with a rubber mallet. Sediment total Corg was determined using an Elemental Analyzer (EURO EA Elemental Analyzer).
DOI: 10.1594/pangaea.968713
title: Benthic megafauna abundance from Norfolk and Baltimore Canyons chemosynthetic environments

description: This dataset provides data on the abundance of benthic megafauna recorded in ROV dives at a relatively shallow (400 m water depth) site near Baltimore Canyon (BC) and a much deeper site (1,500 m) near Norfolk Canyon (NC), in the northwest Atlantic. Abundance of benthic megafauna was based on the analysis of 2075 high-quality images collected during dives at the Norfolk and Baltimore Canyons. The date, time, longitude, latitude and depth of where each image was collected are given. The type of macrohabitat encountered in each image (i.e. (i) sand-mud, (ii) sand mixed with dead mussels, (iii) sand with dead and live mussels, (iv) mixed hard-soft, (v) mixed hard-soft with dead mussels, (vi) mixed hard-soft with live mussels, (vii) mixed hard-soft with dead and live mussels) is also given.
DOI: 10.1594/pangaea.987124
title: High-Frequency 24-Hour Measurements of CO₂, N₂O, and diffusive and ebullitive CH₄ fluxes in two Mediterranean reservoirs

description: This dataset contains measurements of CO2, N2O, and diffusive and ebullitive CH4 fluxes from 13 to 24 times along the 24-hour sampling using a high-resolution laser-based Cavity Ring-Down Spectrometer (CRDS PICARRO G2508) coupled to a floating chamber. We performed three 24-hour sampling campaigns in two eutrophic reservoirs (Cubillas and Iznájar) located in southeastern Spain during the stratification period. We measured the GHG fluxes in Cubillas reservoir in 2016 (from July 14th to July 15th) and in 2018 (from June 21st to June 22nd), and in Iznájar reservoir in 2018 (July 8th to July 9th). Hourly measurements of air temperature, surface water temperature, barometric pressure (HANNA HI 9828), and wind speed (MASTECH MS6252A) recorded at the beginning of each flux measurement are also provided.
DOI: 10.15468/dl.8pdrdm
title: Occurrence Download

description: A dataset containing 80 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is one of (Perezia squarrosa)",
 "HasCoordinate is true",
 "HasGeospatialIssue is false"
 ]
}

 The dataset includes 80 records from 38 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0030943-260208012135463/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.1594/pangaea.956547
title: Hyposalinity affects diurnal photoacclimation patterns in the rhodophyte Palmaria palmata under mimicked Arctic summer conditions: raw data from laboratory physiological measurements

description: The Arctic is one area that has been affected by rising temperatures, leading to an increase in meltwater in the water column. During the months of June/July 2019, fronds of the red seaweed Palmaria palmata in Kongsfjorden, Svalbard (78°55'56.0N 11°55'59.6E) were colected in the intertidal zone. For 21 days at 0ºC, P. palmata was subjected to variations of irradiance cycles and three different salinities SA 34 (control), 28 and 18 in laboratory conditions. Subsequently, measurements in triplicate (n=3) were made of photosynthetic parameters such as maximal quantum yield of PSII (Fv/Fm), non-photochemical quenching (NPQ), biochemical parameters such as quantification of pigments chlorophyll a (Chl a), lutein (Lut), zeaxanthin (Zeax), β-carotene (β-Car), and antioxidant activity 2,2-diphenyl-1-picrylhydrazyl (DPPH).
DOI: 10.1594/pangaea.920002
title: Experiment on pH effects on coralline-epiphyte complex (Ellisolandia elongata): microenvironmental carbonate-chemistry conditions within the boundary layer
DOI: 10.1594/pangaea.902357
title: Nitrous oxide concentrations in water column measured at Baltic Sea coast in Pojo, Finland, 2015-2017