cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.1594/pangaea.792637
title: Alkenone indices, sea surface temperature estimates of sediment core GeoB3388-1
DOI: 10.1594/pangaea.896587
title: TICON: Tidal Constants based on GESLA sea-level records from globally distributed tide gauges (data)

description: The TICON (TIdal CONstants) dataset contains harmonic constants of 40 tidal constituents computed for 1145 tide gauges located on a quasi-global scale and supplementary information. The tidal estimations are based on publicly available sea level records of the Global Extreme Sea Level Analysis (GESLA) project, which is the latest comprehensive high frequency tide gauge data selection collected among 30 different international sources.The tidal constants were derived from the GESLA-2 time series through a least-squares-based harmonic analysis. A screening was performed on all records to ensure that all observations flagged as unreliable are excluded and the length of the applied time series is larger than one year. Moreover, only the records with a minimum of 70% of valid measurements were processed. In total, 89.7% of 1276 original public GESLA records were used.The results are stored in one tab-separated text/ASCII file with 13 columns:1. Latitude of the tide gauge station2. Longitude of the tide gauge station3. Constituent name4. Amplitude in cm5. Phase in degrees6. Standard deviation of the amplitude in cm7. Standard deviation of the phase in degrees8. Percentage of missing observations9. Total number of observations analyzed10. Length of the maximum temporal gap found in the time series in days11. Date of the first observation12. Date of the last observation13. Code that corresponds to the original source of the record TICON is a useful and easy-to-handle data set for tide model validation and allows the users to select the records according to different criteria most suitable for their purposes. The options span from the choice of a geographical region to the use of single constituents or time periods.
description: Supplement to: Piccioni, Gaia; Dettmering, Denise; Bosch, Wolfgang; Seitz, Florian (2019): TICON: TIdal CONstants based on GESLA sea-level records from globally located tide gauges. Geoscience Data Journal, 6(2), 97-104
DOI: 10.1594/pangaea.957185
title: Seawater carbonate chemistry and cellular metabolism of the Arctic copepod Calanus glacialis

description: Using a targeted metabolomic approach we investigated the effects of low seawater pH on energy metabolism in two late copepodite stages (CIV and CV) of the keystone Arctic copepod species Calanus glacialis. Exposure to decreasing seawater pH (from 8.0 to 7.0) caused increased ATP, ADP and NAD+ and decreased AMP concentrations in stage CIV, and increased ATP and phospho-L-arginine and decreased AMP concentrations in stage CV. Metabolic pathway enrichment analysis showed enrichment of the TCA cycle and a range of amino acid metabolic pathways in both stages. Concentrations of lactate, malate, fumarate and alpha-ketoglutarate (all involved in the TCA cycle) increased in stage CIV, whereas only alpha-ketoglutarate increased in stage CV. Based on the pattern of concentration changes in glucose, pyruvate, TCA cycle metabolites, and free amino acids, we hypothesise that ocean acidification will lead to a shift in energy production from carbohydrate metabolism in the glycolysis toward amino acid metabolism in the TCA cycle and oxidative phosphorylation in stage CIV. In stage CV, concentrations of most of the analysed free fatty acids increased, suggesting in particular that ocean acidification increases the metabolism of stored wax esters in this stage. Moreover, aminoacyl-tRNA biosynthesis was enriched in both stages indicating increased enzyme production to handle low pH stress.
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 2023-04-03.
DOI: 10.1594/pangaea.920039
title: Seawater carbonate chemistry and the health and growth of eelgrass and the mass of oysters

description: Climate change is affecting the health and physiology of marine organisms and altering species interactions. Ocean acidification (OA) threatens calcifying organisms such as the Pacific oyster, Crassostrea gigas. In contrast, seagrasses, such as the eelgrass Zostera marina, can benefit from the increase in available carbon for photosynthesis found at a lower seawater pH. Seagrasses can remove dissolved inorganic carbon from OA environments, creating local daytime pH refugia. Pacific oysters may improve the health of eelgrass by filtering out pathogens such as Labyrinthula zosterae (LZ), which causes eelgrass wasting disease (EWD). We examined how co-culture of eelgrass ramets and juvenile oysters affected the health and growth of eelgrass and the mass of oysters under different pCO(2) exposures. In Phase I, each species was cultured alone or in co-culture at 12 degrees C across ambient, medium, and high pCO(2) conditions, (656, 1,158 and 1,606 mu atm pCO(2), respectively). Under high pCO(2), eelgrass grew faster and had less severe EWD (contracted in the field prior to the experiment). Co-culture with oysters also reduced the severity of EWD. While the presence of eelgrass decreased daytime pCO(2), this reduction was not substantial enough to ameliorate the negative impact of high pCO(2) on oyster mass. In Phase II, eelgrass alone or oysters and eelgrass in co-culture were held at 15 degrees C under ambient and high pCO(2) conditions, (488 and 2,013atm pCO(2), respectively). Half of the replicates were challenged with cultured LZ. Concentrations of defensive compounds in eelgrass (total phenolics and tannins), were altered by LZ exposure and pCO(2) treatments. Greater pathogen loads and increased EWD severity were detected in LZ exposed eelgrass ramets; EWD severity was reduced at high relative to low pCO(2). Oyster presence did not influence pathogen load or EWD severity; high LZ concentrations in experimental treatments may have masked the effect of this treatment. Collectively, these results indicate that, when exposed to natural concentrations of LZ under high pCO(2) conditions, eelgrass can benefit from co-culture with oysters. Further experimentation is necessary to quantify how oysters may benefit from co-culture with eelgrass, examine these interactions in the field and quantify context-dependency.
description: In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2019) 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 2020-07-07.
DOI: 10.1594/pangaea.983470
title: AMS radiocarbon ages of ice wedges and conventional 14C ages of the enclosing peat, Lorino site, Eastern Chukchi Peninsula

description: The sampling was carried out using an axe, after first clearing 5-10 cm of ice from the surface.The resulting 14C ages were calibrated using the IntCal20 calibration curve (Reimer et al., 2020) and the Oxcal version 4.4.4 program (Bronk Ramsey, 2021).
DOI: 10.1594/pangaea.972727
title: Above-ground woody biomass and crown data for environmental plantings in Victoria Australia, sampled in 2022-2023 - Crown and biomass data

description: This dataset stores measurements from two field campaigns in 20 environmental plantings aged 4–35 years old in Australia where stem diameters, crown radii, and heights of individual trees and shrubs were collected, and above- and below-ground woody biomass (AGB, BGB) were calculated. The first measurement was undertaken by The University of Melbourne in collaboration with Land Life Company between March and June 2022 covering 14 sites aged 21-35 years in Victoria, Australia. The purpose of this field campaign was to re-evaluate the biomass carbon stock of sites previously assessed in 2000 by CSIRO within the stem diameter database (SDD; Paul et al. 2020). For each site, to ensure representative coverage, the sampling area was divided into equal-sized sectors and within each sector a random transect of 0.05 ha (100 m length by 5 m width) was laid out based on a restricted random sampling design. Two to five transects were measured per site, depending on either CSIRO last measurement plots or to optimize for the project's resources. In total, the dataset contains 48 transects and 4703 unique tree or shrub measurements. Stem diameters were measured with a diameter tape (&gt;10 cm) or a stepped diameter gauge (&lt;10 cm), and height (measured with a laser hypsometer) and crown radius (estimated using a measuring tape) were assessed for only a few representative trees (selected to encompass the full diameter range). The second field campaign was undertaken by Land Life Company between June and July 2023 covering six environmental planting sites aged 4-23 years in Victoria, Australia. The purpose of this campaign was to collect crown data in two directions (perpendicular and parallel to the seeding line). For each site, 14-20 transects of 20 m length were measured (following the seeding line and avoiding gaps or areas of dead plants). In total, the data contains 108 transects and 1341 unique tree and shrub measurements. Crown radius was measured with a tape for each tree or shrub and in addition, stem diameter (measured with a caliper) and height (measured with a laser hypsometer) were also collected. For both datasets, to calculate AGB, stem diameters of multi-stem trees and shrubs were grouped into a single diameter equivalent using the equation of Penman et al. (2003), and then specific plant functional type (PFT) allometric equations (Paul et al. 2015, Paul et al. 2018) were used to derive above and below-ground biomass.
description: Funding:* School of Ecosystem and Forest Sciences, The University of Melbourne (Bennett, L T; Byrne, P; Karopoulos, A)* Research Project agreement between The University of Melbourne and Land Life
DOI: 10.1594/pangaea.983476
title: δ18О values in Holocene and modern ice wedges at the Lorino site, Eastern Chukchi Peninsula

description: The oxygen isotope composition (δ18O) of ice wedges sampled in 2015 - 2017 and 2021 was analyzed in the stable isotope laboratory of the Geography Faculty at Lomonosov Moscow State University (Prof. Yu. Vasil'chuk and Dr. N. Budantseva). International water standards (SMOW, GISP, GRESP, and SLAP) were used for calibration. Analytical precision was ±0.4‰. Oxygen isotope compositions of ice wedges sampled in 2022 were carried out at the Resource Center X-ray Diffraction Research Methods of the Science Park of St. Petersburg State University (Dr. I. Tokarev). International reference materials (V-SMOW-2, GISP, SLAP, USGS-45, and USGS-46) were used for the calibration. Analytical precision was ±0.02‰.
description: The sampling was carried out using an axe, after first clearing 5-10 cm of ice from the surface.
DOI: 10.1594/pangaea.980773
title: Oil slicks, look-alikes and other remarkable SAR signatures in Sentinel-1 imagery in the Eastern Mediterranean Sea in 2019

description: Spaceborne synthetic aperture radar (SAR) has been applied to detect oil slicks. Previous studies applied machine learning and deep learning techniques to automate oil slick detection. However, a large amount of data is generally required to train such a model. It highlights the importance and necessity of a publicly available oil slick dataset. This dataset provides annotations of oil slicks located in longitude from 30°E to 36°E and in latitude from 31°N to 34.7°N in the Eastern Mediterranean Sea, observed from Sentinel-1 SAR in 2019. The annotation and inspection of the oil slicks were initially done in the framework of a previous study by the authors (Yang, Y.-J. et al., 2024). On top of that, images with oceanic and other phenomena, which can also manifest similar SAR signatures and are considered look-alikes, are also included in the dataset as a no-oil set. A well-developed oil spill detection system should be able to not only detect oil spills but also avoid the detection of these look-alikes. These look-alikes were collected on a larger extent, ranging between 27.1212703°E and 36.0881997°E in longitudes and 29.2991798°N and 36.3715771°N in latitudes. There are, in total, 1365 image patches with 3225 oil objects in the oil set and 2290 image patches in the no-oil set.
DOI: 10.1594/pangaea.984193
title: Stable carbon isotopic data for the core lipid archaeol from the Guaymas Basin analyzed by IRMS
DOI: 10.1594/pangaea.984200
title: Stable carbon isotopic data for the core lipid archaeol from the Guaymas Basin analyzed by UHPLC-MS
DOI: 10.1594/pangaea.984223
title: Stable carbon isotopic data for non-GC-amenable intact lipids from the Guaymas Basin analyzed by UHPLC-MS
DOI: 10.1594/pangaea.897883
title: (Supplement 1) Seasonal forecasts of temperature, rainfall and other relevant parameters related to malaria incidence and transmission that are produced by the VECTRI malaria model driven by the forecast data, links to netCDF files
DOI: 10.1594/pangaea.905839
title: Input and output files from 2-D geodynamic numerical models

description: Here we present high-resolution 2-D coupled tectonic-surface processes modeling of extensional basin formation.We focus on understanding feedbacks between erosion and deposition and tectonics during rift and passive margin formation.We test the combined effects of crustal rheology and varying surface process efficiency on structural style of rift and passive margin formation.The forward models presented here allow to identify the following four feedback relations between surface processes and tectonic deformation during rifted margin formation.(1) Erosion and deposition promote strain localization and enhance large offset asymmetric normal fault growth.(2) Progressive infill from proximal to more distal half-grabens promotes the formation of synthetic sets of basin ward dipping normal faults for intermediate crustal strength cases.(3) Sediment loading on top of undeformed crustal rafts in weak crust cases enhances mid and lower crustal flow resulting in sag basin subsidence.(4) Interaction of high sediment supply to the distal margin in very weak crust cases results in detachment based rollover sedimentary basins.Our models further show that erosion efficiency and drainage area provide a first order control on sediment supply during rifting where rift related topography is relatively quickly eroded.Long term sustained sediment supply to the rift basins requires elevated onshore drainage basins.We discuss similar variations in structural style observed in natural systems and compare them with the feedbacks identified here.
description: Here we present input and output files from 2-D geodynamic numerical models published in Journal of Geophysical Research-Solid Earth.Only output files from time steps at crustal breakup time are provided.Those files are into matlab format. Readers can refer to write_matlab.f90 file to get more details how these binary files have been written.Full experiment videos are available here: doi:10.6084/m9.figshare.8261888
description: Supplement to: Theunissen, Thomas; Huismans, Ritske S (2019): Long-Term Coupling and Feedback Between Tectonics and Surface Processes During Non-Volcanic Rifted Margin Formation. Journal of Geophysical Research: Solid Earth, 124(11), 12323-12347
DOI: 10.1594/pangaea.967650
title: Macrozoobenthos abundance of Franz Josef Land obtained from grab samples collected during the RV Ivan Petrov expeditions in Summer-Autumn 2020-2021

description: The dataset contains list of macrobenthic taxa collected with grab samples from Franz Josef Land archipelago in Summer-Autumn 2020 and 2021 (Van-Veen or Okean-0.1 benthic grabs with a capture area of 0.1 m2) with abundance for each species. Sampling was conducted during the RV Ivan Petrov expeditions. A total of 65 benthic grab stations were studied. All taxonomic names have been standardised using the World Register of Marine Species (WoRMS).
DOI: 10.1594/pangaea.826587
title: (Fig. 2) Iron content of sediment core PS75/074-3

description: Alignment of Fe content records to EDC dust contents on AICC12 time-scale; see Lamy et al., 2014 SOM.
DOI: 10.1594/pangaea.904601
title: Single-grain mineralogical data from two Antarctic ice cores (Dome B, Dome C)

description: Mineral species and polymorphs identified in two antarctic ice cores by single-grain Raman spectroscopy. Data are provided for the Holocene and for the last glacial period, Marine Isotope Stage 2.
description: Supplement to: Paleari, Chiara Ileana; Delmonte, Barbara; Andó, Sergio; Garzanti, Eduardo; Petitet, Jean-Pierre; Maggi, Valter (2019): Aeolian Dust Provenance in Central East Antarctica During the Holocene: Environmental Constraints From Single-Grain Raman Spectroscopy. Geophysical Research Letters, 46(16), 9968-9979
DOI: 10.1594/pangaea.902759
title: Bulk elemental and stable isotope data across the Cretaceous-Paleogene boundary

description: This study includes sample name, depth with respect to the Cretaceous-Paleogene (K/Pg) boundary (cm), percentage of calcium carbonate (%CaCO3), percentage of total organic carbon (%TOC), stable carbon isotope composition of bulk carbonate (d13Ccarb), stable oxygen isotope composition of bulk carbonate (d18Ocarb), stable carbon isotope composition of bulk organic carbon (d13Corg), stable nitrogen isotope composition of bulk organic matter (d15N), and stable carbon isotope composition of phytane (d13Cphytane) for 8 K/Pg boundaries in Tunisia (El Kef and Aïn Settara), Spain (Caravaca and Agost), France (Loya and Bidart, and Denmark (Kulstirenden and Højerup). The standard deviation for each parameter is reported when multiple analyses of the same sample were performed. Analytical reproducibility (1σ) was calculated as better than 0.1% for TOC and TN, 0.1‰ and 0.5‰ for d13Corg and d15N, and 0.04‰ and 0.09‰ for d13Ccarb and d18Ocarb by comparison with analytical standards (see main text for details).
description: Supplement to: Sepúlveda, Julio; Alegret, Laia; Thomas, Ellen; Haddad, Emily; Cao, Changqun; Summons, Roger E (2019): Stable Isotope Constraints on Marine Productivity Across the Cretaceous-Paleogene Mass Extinction. Paleoceanography and Paleoclimatology, 34(7), 1195-1217
DOI: 10.1594/pangaea.912260
title: Seawater carbonate chemistry and the behavioral response to flow of the sea urchin Paracentrotus lividus

description: Ocean warming (OW) and acidification (OA) are intensively investigated as they pose major threats to marine organism. However, little effort is dedicated to another collateral climate change stressor, the increased frequency, and intensity of storm events, here referred to as intensified hydrodynamics. A 2‐month experiment was performed to identify how OW and OA (temperature: 21°C; pHT: 7.7, 7.4; control: 17°C‐pHT7.9) affect the resistance to hydrodynamics in the sea urchin Paracentrotus lividus using an integrative approach that includes physiology, biomechanics, and behavior. Biomechanics was studied under both no‐flow condition at the tube foot (TF) scale and flow condition at the individual scale. For the former, TF disk adhesive properties (attachment strength, tenacity) and TF stem mechanical properties (breaking force, extensibility, tensile strength, stiffness, toughness) were evaluated. For the latter, resistance to flow was addressed as the flow velocity at which individuals detached. Under near‐ and far‐future OW and OA, individuals fully balanced their acid‐base status, but skeletal growth was halved. TF adhesive properties were not affected by treatments. Compared to the control, mechanical properties were in general improved under pHT7.7 while in the extreme treatment (21°C‐pHT7.4) breaking force was diminished. Three behavioral strategies were implemented by sea urchins and acted together to cope with flow: improving TF attachment, streamlining, and escaping. Behavioral responses varied according to treatment and flow velocity. For instance, individuals at 21°C‐pHT7.4 increased the density of attached TF at slow flows or controlled TF detachment at fast flows to compensate for weakened TF mechanical properties. They also showed an absence of streamlining favoring an escaping behavior as they ventured in a riskier faster movement at slow flows. At faster flows, the effects of OW and OA were detrimental causing earlier dislodgment. These plastic behaviors reflect a potential scope for acclimation in the field, where this species already experiences diel temperature and pH fluctuations.
description: In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2019) 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 2020-02-17.
description: Supplement to: Cohen-Rengifo, Mishal; Agüera, Antonio; Bouma, Tjeerd J; M'Zoudi, Saloua; Flammang, Patrick; Dubois, Philippe (2019): Ocean warming and acidification alter the behavioral response to flow of the sea urchin Paracentrotus lividus. Ecology and Evolution, 9(21), 12128-12143
DOI: 10.1594/pangaea.848267
title: Stable oxygen isotopic composition of Neogloboquadrina pachyderma of sediment core PS75/072-4