cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.1594/pangaea.933734
title: Extreme zonal and vertical gradients of nutrients and greenhouse gases in the subtropical Eastern South Pacific basin

description: Between October 12 and November 5, 2015, the Cimar 21 “Ocean Islands” cruise was developed, organized and managed by the Navy's Hydrographic and Oceanographic Service (SHOA). This cruise covered the zonal transect in the subtropical region of the Eastern South Pacific Basin from Caldera (27.00°S; 70.88°W) to near Rapa Nui Island (27.04°S; 109.31°W). This region is characterized by presenting very contrasting trophic systems; from the coastal zone with eutrophic (rich in nutrients), colder and suboxic ([O2] &lt;22 µM); to ultra-oligotrophic (with undetectable nutrient levels Raimbault et al., 2008), warmer and oxygenated waters that belong to South Pacific Subtropical Gyre, which has the clearest waters of the global ocean (Morel et al., 2010). In addition to trophic gradient, the Eastern South Pacific region presents an oxygen minimum zone (OMZ (Fuenzalida et al, 2009) with marked oxygen gradients where various biogeochemical processes can recycle greenhouse gases such as nitrous oxide (N2O) (Trocoso et al., 2018) and even methane (CH4) (Farías et al., 2021). From a total of 19 stations sampled, we present a set of data collected between 0 and 500 m depth using a CTD rosette for physicochemical variables such as temperature, salinity and oxygen (obtained from the CTD) and nutrients (nitrite, nitrate, phosphate, silicate) and greenhouse gases N2O and CH4 (obtained from Niskin bottles mounted in an oceanographic rosette). The gas samples were analyzed by gas chromatography through a gas chromatograph (Schimadzu 17A) using an electron capture detector at 350ºC and connected to an autoanalyzer, while the CH4 samples were analyzed manually in a chromatograph gas with flame ionization detector (Agilent Model 6850 GC-Fid) with a Restek RT QS-Bond column (30 meters 053 mm ID, 20 μm Film) with a temperature of 40ºC and a column flow of 4mL min-1. Meanwhile, nutrient samples with micromolar concentration (≥ 1 µM) were analyzed using standard colorimetric techniques (Grasshoff et al., 1983) in a Seal AA3 segmented flow auto-analyzer, whereas when the nutrient concentration was submicromolar (&lt; 1 µM) for samples of nitrite, nitrate, and phosphate in the gyre, the Seal AA3 segmented flow autoanalyzer was used coupled to two 50 cm Liquid waveridge capillary cells (LWCC, Type II), which allowed to increase the sensitivity of the detection spectrophotometric (Troncoso et al., 2018).
description: This project is part of the CIMAR 21 programme (Award: CONA CIMAR-21 Islas C21I 15-06, http://www.cona.cl/programaCimar/cruceros.php) and was funded by the Servicio Hidrográfico y Oceanográfico de la Armada de Chile (http://www.shoa.cl/php/inicio).
DOI: 10.1594/pangaea.973848
title: Mean daily soil moisture content in layer 2 measured below Beeches at Britz Station, North-east of Berlin, Central Europe
DOI: 10.1594/pangaea.901350
title: Specimen data from core P36 of the Heidelberg Basin, Germany
DOI: 10.1594/pangaea.973828
title: Seepage measurement on mixed forest from 2010 to 2021 at Britz Station, North-east of Berlin, Central Europe
DOI: 10.1594/pangaea.981435
title: Bildung und Demokratie mit den Jüngsten. Diskurse und Praktiken der Demokratiebildung in öffentlich verantworteter Kindertagesbetreuung. Transkripte der Interviews

description: DE: Der Datensatz besteht aus Transkripten, die im Rahmen des Projekts "Bildung und Demokratie mit den Jüngsten. Diskurse und Praktiken der Demokratiebildung in öffentlich verantworteter Kindertagesbetreuung" erhoben wurden. Der Datensatz umfasst elf Gruppeninterviews mit insgesamt 43 pädagogischen Fachkräften aus elf Kindertageseinrichtungen in Bayern, Berlin, Niedersachsen, Sachsen und Sachsen-Anhalt, zwölf Leitfadeninterviews mit insgesamt 18 Leitungskräften aus denselben Einrichtungen sowie acht Kinderinterviews mit insgesamt 33 Kindern aus sechs Kitas. Zusätzlich enthält der Datensatz 39 Transkripte videografierter Beobachtungssituationen aus sechs Kindertageseinrichtungen.EN: The dataset consists of transcripts collected as part of the project "Education and Democracy with the Youngest: Discourses and Practices of Democracy Education in Publicly Funded Early Childhood Education and Care." The dataset includes eleven group interviews with a total of 43 early childhood education professionals from eleven daycare centers located in Bavaria, Berlin, Lower Saxony, Saxony and Saxony-Anhalt; twelve guided interviews with a total of 18 center directors from the same institutions; and eight child interviews involving 33 children from six daycare centers. In addition, the dataset contains 39 transcripts of video-recorded observation situations from six daycare centers.
description: Verfügbares Kontextmaterial: Studienreport, umfassendes AnonymisierungskonzeptDie Transkripte sind orthographisch gelättet; Embargo: Alle Transkripte stehen ab dem 01/2027 für die wissenschaftliche Nachnutzung zur Verfügung.
DOI: 10.1594/pangaea.973810
title: Simulation experiment of evapotranspiration on Beeches from 2012 to 2021
DOI: 10.1594/pangaea.965083
title: Mortality rates from a long-term multiple stressor aquarium experiment with the cold-water coral Desmophyllum pertusum

description: We conducted a long-term (6 months) multiple driver aquarium experiment under future environmental conditions at St Abbs Marine Station (UK) with the cold-water coral Lophelia pertusa (syn. Desmophyllum pertusum) sampled from Tisler Reef (Skagerrak). The experiment with live corals consisted of four different treatments to investigate the combined effect of ocean acidification, warming, deoxygenation and food limitation on their physiology: 1) control (9 °C, pH 8.1, 100 % oxygen, 100 % food availability), 2) multiple stressor with high feeding (12 °C, pH 7.7, 90 % oxygen, 100 % food availability), 3) multiple stressor with low feeding (12 °C, pH 7.7, 90 % oxygen, 50 % food availability) and 4) reduced oxygen (9 °C, pH 8.1, 90 % oxygen, 100 % food availability). Every treatment consisted of three replicate tanks with four live corals (treatments 1-4). Mortality rates and numbers of dead vs. live coral polyps were assessed over the full course of the experiment.
description: This dataset covers only the first 6 months of the experiment. Updated versions of the related datasets covering the entire 12-month experimental period are published (2025) and available for preferred reuse and are referenced here.
DOI: 10.1594/pangaea.973827
title: Seepage measurement on Beeches from 2010 to 2021 at Britz Station, North-east of Berlin, Central Europe
DOI: 10.1594/pangaea.933924
title: Glacier elevation changes data in the High Mountain Asia derived from multi-temporal digital elevation models since the 1960s

description: Knowledge about the long-term response of High Mountain Asia (HMA) glaciers to climatic variations is paramount because of their important role in sustaining Asian river flow. Here. a satellite-based time series of glacier mass balance for seven climatically different regions across HMA since the 1960s were estimated by DEM differencing of multi-temporal optical data. The DEMs were corrected for planimetric and altimetric shifts using SRTM as a reference. Elevation dependent biases, present due to the tilt between two DEMs, were also estimated for each DEM using two-dimensional first order polynomial trend surfaces relative to the SRTM DEM. To remove outliers, we analyzed individual glacier elevation differences for each 100 m altitude bin. Considering the heterogeneity of the thickness change in glacierized terrain, outliers were removed by using an elevation dependent sigmoid function. Our study reveals a constant mass loss in all regions even in regions where glaciers were previously in balance with climate.
DOI: 10.1594/pangaea.973826
title: Interception measurement on Beeches from 2010 to 2021 at Britz Station, North-east of Berlin, Central Europe
DOI: 10.1594/pangaea.911552
title: Environmental settings at stations from Mingulay Reef Complex (MRC)
DOI: 10.1594/pangaea.973815
title: Simulation experiment of interception on Beeches from 2012 to 2021
DOI: 10.1594/pangaea.965080
title: Water parameters from a long-term multiple stressor aquarium experiment with the cold-water coral Desmophyllum pertusum

description: We conducted a long-term (6 months) multiple stressor aquarium experiment with the cold-water coral Desmophyllum pertusum (syn. Lophelia pertusa) under future environmental conditions. The experiment with live corals consisted of four different treatments to investigate the combined effect of ocean acidification, warming, deoxygenation and food limitation on their physiology: 1) control (9 °C, pH 8.1, 100 % oxygen, 100 % food availability), 2) multiple stressor with high feeding (12 °C, pH 7.7, 90 % oxygen, 100 % food availability), 3) multiple stressor with low feeding (12 °C, pH 7.7, 90 % oxygen, 50 % food availability) and 4) reduced oxygen (9 °C, pH 8.1, 90 % oxygen, 100 % food availability). Every treatment consisted of three replicate tanks with four live corals (treatments 1-4). In a parallel experiment, we also examined the dissolution rates of dead coral skeletons at three different pCO2 levels (treatment 5: 750, treatment 6: 1000 and treatment 7: 1250 ppm) after 1.5, 3, 4.5 and 6 months. Every treatment consisted of three replicate tanks with two dead coral skeletons (treatments 1, 2 and 5-7). Water parameters (temperature, salinity, pH and oxygen concentration) were measured five times per week in every coral tank.
description: Temperature, salinity, pH and oxygen concentration measured during the course of a long-term multiple-stressor aquarium experiment with the cold-water coral Desmophyllum pertusum
DOI: 10.1594/pangaea.961678
title: Observation of foot spots over a forty year period from adult Wilson's Storm Petrels (Oceanites oceanicus) at King George Island

description: This data set describes the population dynamics of Wilson's Storm Petrels (Oceanites oceanicus) at King George Island (Islas 25 de Mayo, Antarctica) over a forty year period (1978 - 2020). It includes all available data on Wilson's Storm Petrels from two colonies: around the Argentinian Base Carlini (62°14′S, 58°40′W; CA, formerly called Base Jubany) and the Henryk Arctowski Polish Antarctic Station (62°09′S, 58°27′W; HA). Data on adult abundance and estimated age categories (i.e., presence of foot spots; Quillfeldt et al. (2000, doi:10.1007/s003000000167) were collected at CA by using the same size mistnet every study year in the same location within the breeding colony. Adults were ringed with a metal leg ring, and their foot webs were checked for foot spots.
description: This study was further supported by the Erasmus+ programm and thee German Academic Exchange Service (DAAD)
DOI: 10.1594/pangaea.961689
title: Population productivity (number of nests, eggs, chicks and fledglings) of two colonies from Wilson's Storm Petrels (Oceanites oceanicus) at King George Island

description: This data set describes the population dynamics of Wilson's Storm Petrels (Oceanites oceanicus) at King George Island (Islas 25 de Mayo, Antarctica) over a forty year period (1978 - 2020). It includes all available data on Wilson's Storm Petrels from two colonies: around the Argentinian Base Carlini (62°14′S, 58°40′W; CA, formerly called Base Jubany) and the Henryk Arctowski Polish Antarctic Station (62°09′S, 58°27′W; HA). Data on population productivity (number of nests, eggs, chicks and fledglings) was collected by regular visits to the colonies and searching for nest burrows, or monitoring of the egg or chick if found.
description: This study was further supported by the Erasmus+ programm and thee German Academic Exchange Service (DAAD)
DOI: 10.1594/pangaea.911125
title: Response of the microbial food web to a multi-stressor (increase in organic matter, grazing pressure and decrease in pH) effect in incubation experiments in Patagonia: Microcosm

description: Zooplankton treatment: HZ: zooplankton added, LZ: Zooplankton removedCarbon treatment: 0C: No glucose addition, 0.5: 0.5 x Redfield. 1: 1xRedfield, 2: 2xRedfield, 3: 3XRedfieldpH Treatment:NpH: Normal pH, LpH: Low pH
DOI: 10.1594/pangaea.918529
title: Stratigraphic analyses from Lateglacial to late Holocene from sediment core MLC from Moss Lake, Washington, USA

description: Magnetic susceptibility was measured at room temperature and low frequency (0.47 kHz) using the MS2C scanner of a Bartington Instruments Ltd MS2 meter to determine allochthonous inputs. The measurements were taken for 10 seconds for each 1 cm section.Organic matter content were estimated via loss-on-ignition (LOI) (heating 550 °C for the organic content)
DOI: 10.1594/pangaea.943017
title: Incubation experiment characterizing chemodenitrification in the water column of Lake La Cruz, Spain
DOI: 10.1594/pangaea.945348
title: Thaw slump inventory of Nordenskiöld Land (Svalbard Archipelago)

description: We present a comprehensive inventory of thaw slumps (landslides developed in the Arctic and sub-Arctic areas) in Nordenskiöld Land (Svalbard Archipelago). We used the most recent orthophotos (5 x 5 m pixel size) acquired in 2009-2011 from the Web Map Services (WMS) of the Norwegian Polar Institute. The thaw slumps were identified and digitised on-screen as polygons in the WGS_1984_UTM_Zone_33N coordinate reference system. We identified a number of 562 thaw slumps, that will be used along with the thermo-erosion gullies inventory to provide the first multi-hazard predictive model in the Arctic.
description: * Project: GEOCULT - Monitoring Geohazards Affecting Cultural Heritage Sites at Svalbard, Award: 369913 and 369924* File descriptions: Vector format: ESRI shapefileProjection: WGS_1984_UTM_Zone_33NVector type: polygon
DOI: 10.1594/pangaea.918533
title: Raw Pollen data from Lateglacial to late Holocene from sediment core MLC from Moss Lake, Washington, USA

description: Samples were prepared for pollen analysis as follows. A volume of 0.6 ml of each sample was prepared in seven steps following Moore et al. (1991): i) adding HCl, ii) sieving at 180 µm to ensure larger conifer pollen was included, iii) KOH digestion, iv) HF to remove silicates (Heusser and Stock, 1984), v) acetolysis, vi) alcohol dehydration, vii) and mounted in silicone oil. At least 300 terrestrial pollen grains were counted for each sample.
DOI: 10.1594/pangaea.986452
title: Seawater carbonate chemistry and the effect of ocean acidification on olfactory behaviour and physiology of Hemigrapsus oregonensis

description: This study identified the changes in olfactory behaviour and physiology with exposure to acute, static, and fluctuating CO2 in the yellow shore crab, Hemigrapsus oregonensis. Crabs were collected from Bamfield British Columbia, Canada and brought in for laboratory testing at Bamfield Marine Sciences Centre. Olfactory behavioural testing determined changes in preference to an odorant and time to reach an odorant with exposure to ocean acidification. Olfactory physiology was investigated by determining changes in receptor protein expression and changes in olfactory sensory neuron proliferation.
DOI: 10.1594/pangaea.943247
title: Physicochemical profile in the water column of Lake La Cruz, Spain
DOI: 10.1594/pangaea.904406
title: Dark respiration, primary production and calcification rates of the coralline alga Corallina officinalis L. under varying temperature conditions

description: Physiological rates of C. officinalis at the experimental irradiance, and in the dark in the 4 temperature treatments (C, HW, +3, HW+3) for the 3 incubation times (t1, before the MHW start; t2, right after the MHW end; t3, after a recovery period from the MHW end).
description: Supplement to: Rendina, Francesco; Bouchet, Phil J; Appolloni, Luca; Russo, Giovanni F; Sandulli, Roberto; Kolzenburg, Regina; Putra, Aditya; Ragazzola, Federica (2019): Physiological response of the coralline alga Corallina officinalis L. to both predicted long-term increases in temperature and short-term heatwave events. Marine Environmental Research, 150, 104764
DOI: 10.1594/pangaea.918528
title: Raw Diatom data from Lateglacial to late Holocene from sediment core MLC from Moss Lake, Washington, USA

description: Diatom preparation followed a standard procedure (Battarbee, 1986), and followed Renberg's (1990) recommendation of bulk preparation using a water-bath. Microspheres were added to each sample to determine diatom concentration (Battarbee and Kneen, 1982). The concentration of microspheres added was 2 ml of 5.01x10^6 per 0.01 g dry weight of sediment. The samples were then diluted, placed on a cover slip and mounted to the microscope slide using Naphrax®. Diatoms were identified and counted at 1000x magnification. Identification was aided by the website “Diatoms of the United States” (Spaulding, 2014) and identification keys (Krammer and Lange-Bertalot, 1991, 1999a,b). At least 300 diatom frustules were counted per slide.
DOI: 10.1594/pangaea.945315
title: KOSMOS Bergen 2015 mesocosm study: C. harengus condition

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.911172
title: Response of the microbial food web to gradients of organic matter and grazing pressure effect in incubation experiments in the Mediterranean: Mesocosm

description: Zooplankton treatment: HZ: zooplankton added, LZ: Zooplankton removedCarbon treatment: 0C: No glucose addition, 0.5: 0.5 x Redfield. 1: 1xRedfield, 2: 2xRedfield, 3: 3XRedfield
DOI: 10.1594/pangaea.903133
title: Laminarin in Laminaria solidungula and Saccharina latissima from Kongsfjorden, Spitsbergen, during the polar night 2016/17
DOI: 10.1594/pangaea.935389
title: Dendrometer and meteorological data from the TreeNet network, year 2000

description: The timing of diel stem growth of mature forest trees is still largely unknown, as empirical data with high temporal resolution have not been available so far. Consequently, the effects of day-night conditions on tree growth remained uncertain. Here we present the first comprehensive field study of hourly-resolved radial stem growth of seven temperate tree species, based on 57 million underlying data points over a period of up to 8 years. We show that trees grow mainly at night, with a peak after midnight, when the vapour pressure deficit (VPD) is among the lowest. A high VPD strictly limits radial stem growth and allows little growth during daylight hours, except in the early morning. Surprisingly, trees also grow in moderately dry soil when the VPD is low. Species-specific differences in diel growth dynamics show that species able to grow earlier during the night are associated with the highest number of hours with growth per year and the largest annual growth increment. We conclude that species with the ability to overcome daily water deficits faster have greater growth potential. Furthermore, we conclude that growth is more sensitive than carbon uptake to dry air, as growth stops before stomata are known to close.
DOI: 10.1594/pangaea.935396
title: Dendrometer and meteorological data from the TreeNet network, year 2006

description: The timing of diel stem growth of mature forest trees is still largely unknown, as empirical data with high temporal resolution have not been available so far. Consequently, the effects of day-night conditions on tree growth remained uncertain. Here we present the first comprehensive field study of hourly-resolved radial stem growth of seven temperate tree species, based on 57 million underlying data points over a period of up to 8 years. We show that trees grow mainly at night, with a peak after midnight, when the vapour pressure deficit (VPD) is among the lowest. A high VPD strictly limits radial stem growth and allows little growth during daylight hours, except in the early morning. Surprisingly, trees also grow in moderately dry soil when the VPD is low. Species-specific differences in diel growth dynamics show that species able to grow earlier during the night are associated with the highest number of hours with growth per year and the largest annual growth increment. We conclude that species with the ability to overcome daily water deficits faster have greater growth potential. Furthermore, we conclude that growth is more sensitive than carbon uptake to dry air, as growth stops before stomata are known to close.
DOI: 10.1594/pangaea.904619
title: In situ sea surface temperature from Herald Island (2010-2017)

description: SST data was collected by loggers deployed at the reef sites (sampling rates of 1 per 15 - 30 mins). The data was then down sampled to monthly resolution to verify the precision and accuracy of satellite records that were collected from each of the reef sites.
DOI: 10.1594/pangaea.964702
title: Six years of soil temperature time series along an elevational transect in the Italian Alps
DOI: 10.1594/pangaea.935462
title: Dendrometer and meteorological data from the TreeNet network, year 2012

description: The timing of diel stem growth of mature forest trees is still largely unknown, as empirical data with high temporal resolution have not been available so far. Consequently, the effects of day-night conditions on tree growth remained uncertain. Here we present the first comprehensive field study of hourly-resolved radial stem growth of seven temperate tree species, based on 57 million underlying data points over a period of up to 8 years. We show that trees grow mainly at night, with a peak after midnight, when the vapour pressure deficit (VPD) is among the lowest. A high VPD strictly limits radial stem growth and allows little growth during daylight hours, except in the early morning. Surprisingly, trees also grow in moderately dry soil when the VPD is low. Species-specific differences in diel growth dynamics show that species able to grow earlier during the night are associated with the highest number of hours with growth per year and the largest annual growth increment. We conclude that species with the ability to overcome daily water deficits faster have greater growth potential. Furthermore, we conclude that growth is more sensitive than carbon uptake to dry air, as growth stops before stomata are known to close.