cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.48597/8j45-qr74
title: Measurement of Nitrate at Stará Lesná

description: Measurement of Nitrate at Stará Lesná
DOI: 10.1594/pangaea.948574
title: KOSMOS 2017 Peru mesocosm study: single particle measurements of sinking velocity and physical properties

description: As one of Earth's most productive marine ecosystems, the Peruvian Upwelling System transports large amounts of biogenic matter from the surface to the deep ocean. Whilst particle sinking velocity is a key factor controlling the biological pump, thereby affecting carbon sequestration and oxygen-depletion, it has not yet been measured in this system. During a 50-day mesocosm experiment in the surface waters off the coast of Peru, we regularly sampled sedimented material (sampling depth: 17 m) and analyzed the properties of sinking particles using an optical measurement approach. The presented dataset includes sinking velocity, particle size (ESD), compactness (porosity) and shape (aspect ratio) of &gt;100.000 individually measured particles.
DOI: 10.48597/97jv-upta
title: Measurement of Inorganics in precipitation at Liesek

description: Measurement of Inorganics in precipitation at Liesek
DOI: 10.1594/pangaea.944669
title: RTG 2300 - Soil microarthropods (Collembola, Insecta) in current and future forest stands of Central Europe

description: Collembola in soil play vital roles in ecosystem functioning. To understand the effects of forest management effects on soil Collembola, we sampled Collembola from five forest types replicated at eight sites. Animals were sampled by using a soil corer (ø 5 cm) between November 2017 and January 2018. One soil core was taken in each of the 40 forest stands with the samples taken between trees of the same (pure stands) or different species (mixed stands). Each site comprised three pure stands of European beech (Fagus sylvatica L.), Norway spruce (Picea abies [L.] Karst.) and Douglas fir (Pseudotsuga menziesii (Mirbel) Franco.) as well as two beech–conifer mixtures (European beech/Douglas fir and European beech/Norway spruce). Samples were separated into litter and 0–5 and 5–10 cm soil depth. Springtails were extracted using high-gradient heat extraction. Collembola were collected in 50 % diethylene glycol and then transferred into 70 % ethanol. Springtails were identified using the keys of Gisin (1960), Fjellberg (1998, 2007) and Hopkin (2007). Numbers of Collembola in the three sample depths were summed up. The data record their abundance and community structure in temperate forests of Central Europe.
DOI: 10.48597/9jwt-86au
title: Measurement of Precipitation_amount at Arup

description: Measurement of Precipitation_amount at Arup
DOI: 10.48597/9yh3-jtar
title: Measurement of Arsenic at Oulanka

description: Measurement of Arsenic at Oulanka
DOI: 10.48597/9yjp-cze5
title: Measurement of Sulphate_total at Witteveen

description: Measurement of Sulphate_total at Witteveen
DOI: 10.1594/pangaea.947531
title: Pigment concentrations of the corals Montastrea cavernosa and Porites astreoides in response to experimental temperature variations (20-28ºC)

description: This dataset includes pigment concentrations of the coral species Porites astreoides and Montastraea cavernosa from Bermuda that were exposed to a temperature reduction experiment for 37 days. Prior to the experiment, 8 corals were collected with a hammer and chisel on 16th June 2019 in 5 m depth at Sea Venture Shoals, Bermuda [32º22'53” N, 64º38'11” W], which is an exposed reef featuring a typical Bermuda reef community. Water temperature during collection was ~27°C. The seasonal temperature range of Bermuda reefs is ~19°C to 29°C. The laboratory-based experiment took place at the Bermuda Institute of Ocean Sciences from 1st July to 6th August 2019 and used flow-through seawater from the adjacent Reach. Light was provided by Indoor grow lights, Sun Blaze T5 Fluorescent 44. The successive treatments were: (i) constant control temperature at 28°C, and (ii) temperature reduction (0.5 °C/day) followed by constant temperature for 20 days at 24 °C and (iii) temperature reduction (0.5 °C/day) followed by constant temperature for 20 days at 20 °C. Tissue metrics were measured on day 1, 17 and 37 of the experiment including various photosynthesis related pigments. Light-harvesting/photo-collecting (chlorophyll a, peridinin and chlorophyll c2) and photo-protective pigments (diadinoxanthin and diatoxanthin) were determined with a high performance liquid chromatography Agilent 1100, Agilent Technologies, Germany and standardized to coral surface area.
description: Sample IDs indicate species (M=Montastrea cavernosa, P= Porites astreoides), the replicate ID (1 to 8; each replicate is a different coral colony) and the fragment ID (A-G; each coral colony was divided into 7 fragments).
DOI: 10.1594/pangaea.947537
title: Tissue metrics of the corals Montastrea cavernosa and Porites astreoides in response to experimental temperature variations (20-28ºC)

description: This dataset includes tissue metrics of the coral species Porites astreoides and Montastraea cavernosa from Bermuda that were exposed to a temperature reduction experiment for 37 days. Prior to the experiment, 8 corals were collected with a hammer and chisel on 16th June 2019 in 5 m depth at Sea Venture Shoals, Bermuda [32º22'53” N, 64º38'11” W], which is an exposed reef featuring a typical Bermuda reef community. Water temperature during collection was ~27°C. The seasonal temperature range of Bermuda reefs is ~19°C to 29°C. The laboratory-based experiment took place at the Bermuda Institute of Ocean Sciences from 1st July to 6th August 2019 and used flow-through seawater from the adjacent Reach. Light was provided by Indoor grow lights, Sun Blaze T5 Fluorescent 44. The successive treatments were: (i) constant control temperature at 28°C, and (ii) temperature reduction (0.5 °C/day) followed by constant temperature for 20 days at 24 °C and (iii) temperature reduction (0.5 °C/day) followed by constant temperature for 20 days at 20 °C. Tissue metrics were measured on day 1, 17 and 37 of the experiment and standardized to coral surface area (determined via photography and the software ImageJ). These are total biomass (determined gravimetrically with a high precision balance (R160 P, Sartorius, Germany)), coral host biomass, zooxanthellae biomass, zooxanthellae density (Neubauer hemocytometer), and concentration of light harvesting/photo-collecting pigments (chlorophyll a + peridinin + chlorophyll c2) and concentration of photo-protective pigments (diadinoxanthin + diatoxanthin) determined with a high performance liquid chromatography Agilent 1100, Agilent Technologies, Germany. Light-harvesting pigments are also standardized to zooxanthella cell.
description: Sample IDs indicate species (M=Montastrea cavernosa, P= Porites astreoides), the replicate ID (1 to 8; each replicate is a different coral colony) and the fragment ID (A-G; each coral colony was divided into 7 fragments).
DOI: 10.48597/axph-nspk
title: Measurement of Inorganics in air and particle phase at Witteveen

description: Measurement of Inorganics in air and particle phase at Witteveen
DOI: 10.1594/pangaea.947540
title: Metabolic rates of the corals Montastrea cavernosa and Porites astreoides in response to experimental temperature variations (20-28ºC)

description: This dataset includes metabolic rates of the coral species Porites astreoides and Montastraea cavernosa from Bermuda that were exposed to a temperature reduction experiment for 37 days. Prior to the experiment, 8 corals were collected with a hammer and chisel on 16th June 2019 in 5 m depth at Sea Venture Shoals, Bermuda [32º22'53” N, 64º38'11” W], which is an exposed reef featuring a typical Bermuda reef community. Water temperature during collection was ~27°C. The seasonal temperature range of Bermuda reefs is ~19°C to 29°C. The laboratory-based experiment took place at the Bermuda Institute of Ocean Sciences from 1st July to 6th August 2019 and used flow-through seawater from the adjacent Reach. Light was provided by Indoor grow lights, Sun Blaze T5 Fluorescent 44. The successive treatments were: (i) constant control temperature at 28°C, and (ii) temperature reduction (0.5 °C/day) followed by constant temperature for 20 days at 24 °C and (iii) temperature reduction (0.5 °C/day) followed by constant temperature for 20 days at 20 °C. Metabolic rates were measured on day 1, 5, 9, 13, 17, 22, 26 and 37 of the experiment. Metabolic rates include photosynthesis and oxygen consumption rates measured by respirometry. Standardized to coral surface are net photosynthesis, respiration and gross photosynthesis. Metabolic rates were measured in 1 liter glass incubation chamber (kitchen ware) equipped with an oxygen sensor spot (OXSP5, PyroScience, Germany), a magnetic stirring bar, and a grid for coral placement above the stirring bar controlled by a magnetic stirring plate (LABOMAG Mulitpoint magnetic stirrer, SHP Steriltechnik, Germany). Light was supplied with aquarium lamps (PAR ∼210–240 μmol photons/m²/s; indoor grow light, Sun Blaze T5 Fluorescent 44). In addition, gross photosynthesis is standardized to zooxanthella cell, amount of light-harvesting/photo-collecting pigments and respiration is standardized to total biomass.
description: Sample IDs indicate species (M=Montastrea cavernosa, P= Porites astreoides), the replicate ID (1 to 8; each replicate is a different coral colony) and the fragment ID (A-G; each coral colony was divided into 7 fragments).
DOI: 10.48597/aya9-s5z2
title: Measurement of Inorganics in air and particle phase at Witteveen

description: Measurement of Inorganics in air and particle phase at Witteveen
DOI: 10.48597/b292-j9th
title: Measurement of Heavy metals at Pedersker

description: Measurement of Heavy metals at Pedersker
DOI: 10.48597/bfdj-z24h
title: Measurement of Inorganics in precipitation at Chopok

description: Measurement of Inorganics in precipitation at Chopok
DOI: 10.1594/pangaea.950322
title: Absolute abundance of pollen counts from sediment core Zamostye, Kursk region, Russia
DOI: 10.48597/bsp9-6hhx
title: Measurement of Nitrogen_dioxide at Chopok

description: Measurement of Nitrogen_dioxide at Chopok
DOI: 10.48597/c89k-uj8c
title: Measurement of Nitrogen_dioxide at Stará Lesná

description: Measurement of Nitrogen_dioxide at Stará Lesná
DOI: 10.1594/pangaea.950323
title: Relative abundance of pollen counts from sediment core Zamostye, Kursk region, Russia
DOI: 10.48597/ch56-vkuk
title: Measurement of Nitrogen_dioxide at Liesek

description: Measurement of Nitrogen_dioxide at Liesek
DOI: 10.1594/pangaea.958964
title: Seawater carbonate chemistry and dissolved organic matter dynamics during an oligotrophic ocean acidification experiment using large-scale mesocosms (KOSMOS 2014)

description: Dissolved organic matter (DOM) represents a major reservoir of carbon in the oceans. Environmental stressors such as ocean acidification (OA) potentially affect DOM production and degradation processes, e.g., phytoplankton exudation or microbial uptake and biotransformation of molecules. Resulting changes in carbon storage capacity of the ocean, thus, may cause feedbacks on the global carbon cycle. Previous experiments studying OA effects on the DOM pool under natural conditions, however, were mostly conducted in temperate and coastal eutrophic areas. Here, we report on OA effects on the existing and newly produced DOM pool during an experiment in the subtropical North Atlantic Ocean at the Canary Islands during an (1) oligotrophic phase and (2) after simulated deep water upwelling. The last is a frequently occurring event in this region controlling nutrient and phytoplankton dynamics. We manipulated nine large-scale mesocosms with a gradient of pCO2 ranging from 350 up to 1,030 μatm and monitored the DOM molecular composition using ultrahigh-resolution mass spectrometry via Fourier-transform ion cyclotron resonance mass spectrometry (FT-ICR-MS). An increase of 37 μmol L−1 DOC was observed in all mesocosms during a phytoplankton bloom induced by simulated upwelling. Indications for enhanced DOC accumulation under elevated CO2 became apparent during a phase of nutrient recycling toward the end of the experiment. The production of DOM was reflected in changes of the molecular DOM composition. Out of the 7,212 molecular formulae, which were detected throughout the experiment, 50% correlated significantly in mass spectrometric signal intensity with cumulative bacterial protein production (BPP) and are likely a product of microbial transformation. However, no differences in the produced compounds were found with respect to CO2 levels. Comparing the results of this experiment with a comparable OA experiment in the Swedish Gullmar Fjord, reveals similar succession patterns for individual compound pools during a phytoplankton bloom and subsequent accumulation of these compounds were observed. The similar behavior of DOM production and biotransformation during and following a phytoplankton bloom irrespective of plankton community composition and CO2 treatment provides novel insights into general dynamics of the marine DOM pool.
description: In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2022) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI). The date of carbonate chemistry calculation by seacarb is 2023-05-15.
DOI: 10.1594/pangaea.958708
title: Pollen analysis from the study site Omelchenki, Kharkiv region, Ukraine
DOI: 10.48597/cqk2-yrdc
title: Measurement of Inorganics in precipitation at Turlough Hill

description: Measurement of Inorganics in precipitation at Turlough Hill
DOI: 10.48597/d662-5kzm
title: Measurement of Inorganics in air and particle phase at Witteveen

description: Measurement of Inorganics in air and particle phase at Witteveen
DOI: 10.48597/dpgj-brth
title: Measurement of Inorganics in precipitation at Aliartos

description: Measurement of Inorganics in precipitation at Aliartos
DOI: 10.48597/e4za-3czb
title: Measurement of Inorganics in air and particle phase at Witteveen

description: Measurement of Inorganics in air and particle phase at Witteveen
DOI: 10.48597/en8d-f5fn
title: Measurement of Inorganics in air and particle phase at Chopok

description: Measurement of Inorganics in air and particle phase at Chopok
DOI: 10.48597/f9pq-7yvm
title: Measurement of Calcium at Offagne

description: Measurement of Calcium at Offagne
DOI: 10.1594/pangaea.960580
title: Temperature before the heating cycle from the sea ice mass balance buoy DTC10 during MOSAiC 2019/2020

description: Temperature and heating-induced temperature were measured along a chain of thermistors. Digital Thermistor Chain DTC10 is an autonomous instrument that was installed on drifting sea ice in the Arctic Ocean during the MOSAiC expedition on 28 January 2020. The thermistor chain was 4.16 m long and included sensors with a regular spacing of 2 cm. The resulting time series describes the evolution of temperature during the heating cycle of 20 s and after the heating cycle during the following 40 s as a function of geographic position (GPS), depth, and time between 28 January 2020 and 1 July 2020 in sample intervals of 6 hours. It also contains manually estimated position of air-snow, snow-ice, and ice-water interfaces. The DTCs was installed in level first-year ice next to the Fort Ridge. Ice mass balance SIMBA 2020T60 was installed at the Fort Ridge: doi:10.1594/PANGAEA.924269. Radiation station 2020R10 was installed in level first-year ice next to the Fort Ridge: doi:10.1594/PANGAEA.949124.
description: Temperature after the cooling cycle and temperature before the heating cycle both represent in situ temperature. The temperature before the heating cycle may contain errors in measurements and is provided for reference. It is recommended to use temperature after the cooling cycle and temperature difference after the heating cycle for further analysis.
DOI: 10.48597/fmpw-w5sc
title: Measurement of Arsenic at Keldsnor

description: Measurement of Arsenic at Keldsnor
DOI: 10.48597/fndn-x4n7
title: Measurement of Heavy metals at Oulanka

description: Measurement of Heavy metals at Oulanka
DOI: 10.1594/pangaea.960511
title: Temperature before the heating cycle from the sea ice mass balance buoy DTC09 during MOSAiC 2019/2020

description: Temperature and heating-induced temperature were measured along a chain of thermistors. Digital Thermistor Chain DTC09 is an autonomous instrument that was installed on drifting sea ice in the Arctic Ocean during the MOSAiC expedition on 28 January 2020. The thermistor chain was 4.16 m long and included sensors with a regular spacing of 2 cm. The resulting time series describes the evolution of temperature during the heating cycle of 20 s and after the heating cycle during the following 40 s as a function of geographic position (GPS), depth, and time between 27 February 2020 and 1 July 2020 in sample intervals of 6 hours. It also contains manually estimated position of air-snow, snow-ice, and ice-water interfaces. The DTCs was installed in level first-year ice next to the Fort Ridge. Ice mass balance SIMBA 2020T60 was installed at the Fort Ridge: doi:10.1594/PANGAEA.924269. Radiation station 2020R10 was installed in level first-year ice next to the Fort Ridge: doi:10.1594/PANGAEA.949124.
description: Temperature after the cooling cycle and temperature before the heating cycle both represent in situ temperature. The temperature before the heating cycle may contain errors in measurements and is provided for reference. It is recommended to use temperature after the cooling cycle and temperature difference after the heating cycle for further analysis.
DOI: 10.1594/pangaea.960512
title: Temperature after the cooling cycle from the sea ice mass balance buoy DTC09 during MOSAiC 2019/2020

description: Temperature and heating-induced temperature were measured along a chain of thermistors. Digital Thermistor Chain DTC09 is an autonomous instrument that was installed on drifting sea ice in the Arctic Ocean during the MOSAiC expedition on 28 January 2020. The thermistor chain was 4.16 m long and included sensors with a regular spacing of 2 cm. The resulting time series describes the evolution of temperature during the heating cycle of 20 s and after the heating cycle during the following 40 s as a function of geographic position (GPS), depth, and time between 27 February 2020 and 1 July 2020 in sample intervals of 6 hours. It also contains manually estimated position of air-snow, snow-ice, and ice-water interfaces. The DTCs was installed in level first-year ice next to the Fort Ridge. Ice mass balance SIMBA 2020T60 was installed at the Fort Ridge: doi:10.1594/PANGAEA.924269. Radiation station 2020R10 was installed in level first-year ice next to the Fort Ridge: doi:10.1594/PANGAEA.949124.
description: Temperature after the cooling cycle and temperature before the heating cycle both represent in situ temperature. The temperature before the heating cycle may contain errors in measurements and is provided for reference. It is recommended to use temperature after the cooling cycle and temperature difference after the heating cycle for further analysis.
DOI: 10.1594/pangaea.960513
title: Temperature difference after the heating cycle from the sea ice mass balance buoy DTC09 during MOSAiC 2019/2020

description: Temperature and heating-induced temperature were measured along a chain of thermistors. Digital Thermistor Chain DTC09 is an autonomous instrument that was installed on drifting sea ice in the Arctic Ocean during the MOSAiC expedition on 28 January 2020. The thermistor chain was 4.16 m long and included sensors with a regular spacing of 2 cm. The resulting time series describes the evolution of temperature during the heating cycle of 20 s and after the heating cycle during the following 40 s as a function of geographic position (GPS), depth, and time between 27 February 2020 and 1 July 2020 in sample intervals of 6 hours. It also contains manually estimated position of air-snow, snow-ice, and ice-water interfaces. The DTCs was installed in level first-year ice next to the Fort Ridge. Ice mass balance SIMBA 2020T60 was installed at the Fort Ridge: doi:10.1594/PANGAEA.924269. Radiation station 2020R10 was installed in level first-year ice next to the Fort Ridge: doi:10.1594/PANGAEA.949124.
description: Temperature after the cooling cycle and temperature before the heating cycle both represent in situ temperature. The temperature before the heating cycle may contain errors in measurements and is provided for reference. It is recommended to use temperature after the cooling cycle and temperature difference after the heating cycle for further analysis.
DOI: 10.48597/ftsb-ubkm
title: Measurement of Arsenic at Oulanka

description: Measurement of Arsenic at Oulanka
DOI: 10.1594/pangaea.960581
title: Temperature after the cooling cycle from the sea ice mass balance buoy DTC10 during MOSAiC 2019/2020

description: Temperature and heating-induced temperature were measured along a chain of thermistors. Digital Thermistor Chain DTC10 is an autonomous instrument that was installed on drifting sea ice in the Arctic Ocean during the MOSAiC expedition on 28 January 2020. The thermistor chain was 4.16 m long and included sensors with a regular spacing of 2 cm. The resulting time series describes the evolution of temperature during the heating cycle of 20 s and after the heating cycle during the following 40 s as a function of geographic position (GPS), depth, and time between 28 January 2020 and 1 July 2020 in sample intervals of 6 hours. It also contains manually estimated position of air-snow, snow-ice, and ice-water interfaces. The DTCs was installed in level first-year ice next to the Fort Ridge. Ice mass balance SIMBA 2020T60 was installed at the Fort Ridge: doi:10.1594/PANGAEA.924269. Radiation station 2020R10 was installed in level first-year ice next to the Fort Ridge: doi:10.1594/PANGAEA.949124.
description: Temperature after the cooling cycle and temperature before the heating cycle both represent in situ temperature. The temperature before the heating cycle may contain errors in measurements and is provided for reference. It is recommended to use temperature after the cooling cycle and temperature difference after the heating cycle for further analysis.
DOI: 10.48597/gaxs-b5pm
title: Measurement of Ammonium at Turlough Hill

description: Measurement of Ammonium at Turlough Hill
DOI: 10.1594/pangaea.960582
title: Temperature difference after the heating cycle from the sea ice mass balance buoy DTC10 during MOSAiC 2019/2020

description: Temperature and heating-induced temperature were measured along a chain of thermistors. Digital Thermistor Chain DTC10 is an autonomous instrument that was installed on drifting sea ice in the Arctic Ocean during the MOSAiC expedition on 28 January 2020. The thermistor chain was 4.16 m long and included sensors with a regular spacing of 2 cm. The resulting time series describes the evolution of temperature during the heating cycle of 20 s and after the heating cycle during the following 40 s as a function of geographic position (GPS), depth, and time between 28 January 2020 and 1 July 2020 in sample intervals of 6 hours. It also contains manually estimated position of air-snow, snow-ice, and ice-water interfaces. The DTCs was installed in level first-year ice next to the Fort Ridge. Ice mass balance SIMBA 2020T60 was installed at the Fort Ridge: doi:10.1594/PANGAEA.924269. Radiation station 2020R10 was installed in level first-year ice next to the Fort Ridge: doi:10.1594/PANGAEA.949124.
description: Temperature after the cooling cycle and temperature before the heating cycle both represent in situ temperature. The temperature before the heating cycle may contain errors in measurements and is provided for reference. It is recommended to use temperature after the cooling cycle and temperature difference after the heating cycle for further analysis.