cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.1594/pangaea.928466
title: Particle fluxes at a sediment trap in the Vazella pourtalesii glass sponge grounds of the Scotian Shelf (2017-2018)

description: The Scotian Shelf harbors unique aggregations of the glass sponge Vazella pourtalesii providing an important habitat for benthic and pelagic fauna. Recent studies have shown that these sponge grounds have persisted in the face of strong inter-annual and multi-decadal variability in temperature and salinity. However, little is known of the environmental characteristics on hourly-seasonal time scales. This study presents the first hydrodynamic observations and associated (food) particle supply mechanisms for the Vazella sponge grounds, highlighting the influence of natural variability in environmental conditions on sponge growth and resilience. Near-bottom environmental conditions were characterized by high temporal resolution data collected with a benthic lander, deployed during a period of 10-months in the Sambro Bank Sponge Conservation Area. The lander was equipped with temperature and oxygen sensors, a current meter, a sediment trap and a video camera. In addition, water column profiles of temperature and salinity were recorded along a transect, conducted in a gradient from high to lower sponge presence probability. Over the course of the lander deployment, temperature fluctuated between 8.8-12 °C with an average of 10.6 °C ± 0.4 °C. The water contained on average 6.3 mg l-1 oxygen and near bottom current speed was on average 0.12 m/s, with peaks up to 0.47 m/s. Semi-diurnal tidal flow was observed to result in constant resuspension of particulate matter in the benthic boundary layer. Surface storm events episodically caused extremely turbid conditions on the seafloor that persisted for several days, with particles being resuspended to more than 13 m above the seabed. The carbon flux in the near-bottom sediment trap peaked during storm events and also after a spring bloom in April, when fresh phytodetritus was observed in the bottom boundary layer. While resuspension events can represent a major stressor for sponges, limiting their filtration capability and remobilizing them, episodes of strong currents and lateral particle transport likely play an important role in food supply and the replenishment of nutrients and oxygen. Our results contextualize human-induced threats such as bottom fishing and climate change by providing more knowledge of the natural environmental conditions under which sponge grounds persist.
DOI: 10.1594/pangaea.897592
title: Environmental and biological data from deep-sea sponge aggregations in the Faroe-Shetland Channel Nature Conservation Marine Protected Area

description: Demersal landingsper ICES statistical rectangle: https://marinescotland.atkinsgeospatial.com/nmpi/
DOI: 10.1594/pangaea.971267
title: KOSMOS 2020 Peru mesocosm study on ecosystem responses to different light and upwelling intensities: d15N and trophic level for fish, meso-zooplankton and particulate organic matter

description: Trophic structure of plankton communities during the mesocosm experiment in the Peruvian upwelling system near Lima from February-April 2020. Light (ambient = high vs. reduced = low) was manipulated from the beginning (day 0) and upwelling (0 to 60% deep water addition) two weeks into the experiment (day 13). Larvae Peruvian anchovy (Engraulis ringens, 22 days-post-hatch) and chita (Anisotremus scapularis, 44 days-post-hatch) reared in the laboratory were introduced shortly after (day 19). Meso-zooplankton were sampled with small nets at several points in time and the fish once with a large net at the end of the experiment (day 36). Groups of whole meso-zooplankton individuals and muscle tissue of single fish individuals were analysed for C, N and δ15N. Most fish had reached the late larval or early juvenile stage by that time. Particulate organic matter was monitored throughout the entire experiment in 2-day intervals. Trophic level of fish and zooplankton was approximated using particulate organic matter corrected for its heterotrophic component as autotroph baseline and a discrimination factor of 3.4. Methodological details in Goldenberg et al. and Thielecke et al. (manuscripts in progress).
DOI: 10.1594/pangaea.921626
title: Collection information of the genus Geodia from boreo-arctic North-Atlantic deep-sea sponge grounds

description: Boreo-arctic sponge grounds are essential deep-sea structural habitats that provide important services for the ecosystem. These large sponge aggregations are dominated by demosponges of the genus Geodia (order Tetractinellida, family Geodiidae). However, little is known about the basic biological features of these species, such as their life cycle and dispersal capabilities. Here, we surveyed five deep-sea species of Geodia from the North Atlantic Ocean and studied their reproductive cycle and strategy using light and electron microscopy. We confirmed that these five species were oviparous and gonochoristic and that their reproductive season spanned similar periods: from late spring to early autumn. Concerning their reproductive strategy, the high abundance of lipid yolk observed in the female gametes could indicate both a necessity for rapid fuel during embryogenesis in the water column and increased buoyancy for drifting over longer times. Overall, the investment in reproduction was lower for all the surveyed species compared to similar shallow-water species. Given the present hazards that threaten sponge grounds, it becomes crucial to understand the processes behind the maintenance and regeneration of populations of keystone deep-sea species in order to predict the magnitude of human impacts and estimate their ability to recover. The information provided in this study will be useful for developing adequate conservation strategies for these vulnerable deep-sea habitats.
DOI: 10.1594/pangaea.928927
title: Chemical and isotope data for porewater samples from Paleochori Bay, Milos, Greece

description: Despite more than 25 years of research, the spatial and temporal variability of hydrothermal venting in Paleochori Bay remains poorly constrained because there are no reliable repeat measurements at discrete locations. Using a georeferenced photographic map of Paleochori Bay (https://doi.org/10.1594/PANGAEA.915881), scuba divers collected 168 porewater and seawater samples inside and outside of the bay and exact GPS coordinates were recorded for each sample. The GPS coordinates of the sampling locations should provide a foundation for future research in Paleochori Bay by enabling reliable repeat measurements. The dataset was combined with the temperature measurements previously reported (https://doi.org/10.1594/PANGAEA.915881) and contains chemical, isotopic data, as well as water depth and sediment color. All porewater samples were taken at a sediment depth of 0.1 m.
DOI: 10.1594/pangaea.965455
title: Stable silicon isotope composition of sponge spicules from the Schultz Massif Seamount, Arctic

description: The stable silicon isotopic composition of siliceous sponge skeletal elements, spicules, is a potential archive of past dissolved silicon (silicic acid, or DSi) concentrations in bottom waters. Several field-based studies have shown that there is a non-linear relationship between the concentration of ambient DSi and both the isotopic composition (denoted by d30Si) of spicules and apparent isotopic fractionation by sponges during growth. There is considerable scatter in the calibration, with some studies highlighting variation within an individual sponge, and between individuals in both monospecific and more diverse populations. When reconstructing past DSi, it is only possible to differentiate spicules by their morphology, which in many cases will not be taxonomically diagnostic. However, there has yet to be a systematic study of core top and downcore d30Si measurements from different spicule types. Here we address that gap using spicules extracted from two shallow sediment cores from the Schultz Massif Seamount between the Norwegian and Greenland Seas collected on R/V G.O.Sars expedition GS2016109A. Sediments were sliced at 1cm intervals, washed and dried, and spicules hand-picked out and sorted by morphological type. The spicules were dissolved and analysed for silicon isotopic composition using a multi-collector inductively coupled plasma mass spectrometer (MC-ICP-MS).
DOI: 10.1594/pangaea.883836
title: Tsunameter measurements collected during the first EGIM deployment at the OBSEA cabled observatory, December, 2016

description: Uncalibrated sensor data
DOI: 10.1594/pangaea.903219
title: Weather station (Meteo Sarti Vantage Pro2) measurements collected at the OBSEA shore station (UPC) during April, 2014
DOI: 10.1594/pangaea.909246
title: Collection data, 16S microbiome and metabolome of Geodia barretti, Stryphnus fortis and Weberella bursa, in the Davis Strait

description: Collection data of the marine sponge specimens studied; three species: Geodia barretti, Stryphnus fortis and Weberella bursa. Collection data includes locality, depth, salinity, bottom temperature, gear, date, cruise and station# and a collection number for every specimen (DFO Canada collections). NCBI SRA# of the 16S gene amplicon sequencing of their microbiome. Numbers of the UPLC-HRMS runs (four different modes for every specimen: HILIC+, HILIC-, RP+ and RP-). The raw UPLC-HRMS datasets are deposited in the repository metabolights (www.ebi.ac.uk/metabolights/MTBLS1388). QC runs are Quality Control runs for the UPLC-HRMS experiment (also deposited in metabolights).
description: Sponge specimens were collected in the Davis Strait area between 2011 and 2015 by the crews of the R/V Pâmiut of the Greenland Institute of Natural Resources during cruises conducted by Fisheries and Oceans Canada. Sponges were dredged using Alfredo or Cosmos benthic trawls at depths between 244 m and 1481 m. Collectors on board were Dr. Wojciech Walkusz and Tim Siferd, Fisheries & Oceans Canada (DFO), Central and Arctic Division, Winnipeg, Manitoba, during their multispecies stock assessment surveys.
DOI: 10.1594/pangaea.967059
title: KOSMOS mesocosm experiment Bergen 2022 on ocean alkalinity enhancement: fish abundance, biomass and sedimentation

description: Fish during the mesocosm experiment in Raunefjord near Bergen (Norway) in spring/summer 2022. Larvae of several coastal fish species were enclosed naturally (day 0) and supplemented with 95 herring larvae reared in the laboratory (day 6). Following the OAE treatment (day 6), deceased fish larvae were monitored via the sediment trap in 2-day intervals to approximate mortality. At the end of the experiment (day 54), all live fish were caught to assess abundance, biomass and taxonomic composition. Methodological details in Goldenberg et al. (under review).
DOI: 10.1594/pangaea.902736
title: CTD (SBE 16 PLUS V2) measurements collected at the OBSEA underwater observatory during July, 2018
DOI: 10.1594/pangaea.903222
title: Weather station (Meteo Buoy WeatherStation Instrument 150WX) measurements collected at the OBSEA underwater observatory buoy during June, 2014
DOI: 10.1594/pangaea.982543
title: Above-ground biomass map of the savannahs and woodlands of continental Africa and Madagascar

description: This dataset gives estimates of the woody above-ground biomass (AGB) of the savannahs and woodlands of continental Africa and Madagascar at a 25 meters spatial resolution, obtained from the 2010 ALOS PALSAR mosaic produced by the Japanese Space Exploration Agency (JAXA).AGB is estimated between 0 and 85 Mg.ha-1 following the methodology described in the referenced publication.The following land cover classes have been masked:- Dense forests and flooded forests, using classes 50 (Dense forests) and 160 (Flooded forests) of the ESA CCI Land Cover dataset: https://www.esa-landcover-cci.org/- Mangroves, using the GMW (Global Mangrove Watch) dataset: https://www.globalmangrovewatch.org/- Urban areas, using the HBASE (Human Built-Up and Settlement Extent) dataset: http://sedac.ciesin.columbia.edu/data/set/ulandsat-hbase-v1- Water bodies, using the GSW (Global Surface Waters) dataset: https://global-surface-water.appspot.com/The data can be used for a wide range of applications, from conservation to carbon accounting. .The dataset is divided into 10° × 10° tiles. The file names give the coordinates of the upper left corner of each tile (in degrees latitude and longitude).An additional file is provided: AGB_Bouvet_QGIS_style.qml, which is a QGis style file to visualize the AGB dataset in the QGis software.Year of estimate: 2010Projection: Geographic Lat/LonGeodetic Datum: WGS-84Data type: ByteFile type: Geotiff (LZW compression)Pixel size : 0.8 arcseconds × 0.8 arcseconds (approximately 25m × 25m at Equator)Pixel value:- 0 to 85: AGB in tons/ha- 100: dense forests mask- 160: flooded forests mask- 170: mangroves mask- 190: urban areas mask- 210: water bodies mask
DOI: 10.1594/pangaea.908938
title: Wave measurements (Nortec AWAC 1 Mhz ADCP) collected at the OBSEA underwater observatory during November, 2012
DOI: 10.1594/pangaea.927933
title: Physical oceanography at station GS2018108-12-CTD-03 during G. O. Sars cruise GS2018108
DOI: 10.1594/pangaea.902378
title: CTD (SBE 16 PLUS V2) measurements collected at the OBSEA underwater observatory during March, 2010
DOI: 10.1594/pangaea.927936
title: Physical oceanography at station GS2018108-15-CTD-06 during G. O. Sars cruise GS2018108
DOI: 10.1594/pangaea.902666
title: CTD (SBE 37 SMP) measurements collected at the OBSEA underwater observatory during February, 2016
DOI: 10.1594/pangaea.902670
title: CTD (SBE 37 SMP) measurements collected at the OBSEA underwater observatory during June, 2016
DOI: 10.1594/pangaea.902682
title: CTD (SBE 37 SMP) measurements collected at the OBSEA underwater observatory during September, 2017
DOI: 10.1594/pangaea.902377
title: CTD (SBE 37 SMP) measurements collected at the OBSEA underwater observatory during February, 2010
DOI: 10.1594/pangaea.902425
title: CTD (SBE 37 SMP) measurements collected at the OBSEA underwater observatory during December, 2011
DOI: 10.1594/pangaea.902380
title: CTD (SBE 16 PLUS V2) measurements collected at the OBSEA underwater observatory during April, 2010
DOI: 10.1594/pangaea.902626
title: CTD (SBE 37 SMP) measurements collected at the OBSEA underwater observatory during September, 2014
DOI: 10.1594/pangaea.903237
title: Weather station (Meteo Sarti Vantage Pro2) measurements collected at the OBSEA shore station (UPC) during December, 2014
DOI: 10.1594/pangaea.964835
title: Experiment details of the cation exchange capacity (CEC) laboratory experiment
DOI: 10.1594/pangaea.964831
title: Laboratory experiment of cation exchange capacity (CEC) from rock and mineral standards
DOI: 10.1594/pangaea.964842
title: Velocity-dependent friction measurements, inverse modeling results (Aging Law) of the cation exchange capacity (CEC) laboratory experiment
DOI: 10.15468/dl.4dm449
title: Occurrence Download

description: A dataset containing 1629168 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Country is Ukraine",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "OccurrenceStatus is Present",
 "TaxonKey is Plantae"
 ]
}

 The dataset includes 1629168 records from 404 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0029793-251025141854904/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.1594/pangaea.964838
title: Cohesion measurements of the cation exchange capacity (CEC) laboratory experiment
DOI: 10.1594/pangaea.964843
title: Velocity-dependent friction measurements, inverse modeling results (Slip Law) of the cation exchange capacity (CEC) laboratory experiment
DOI: 10.1594/pangaea.902668
title: CTD (SBE 37 SMP) measurements collected at the OBSEA underwater observatory during April, 2016
DOI: 10.1594/pangaea.910589
title: Physical oceanography during towed CTD track POS534_35-1 (VCTD12)
DOI: 10.1594/pangaea.902396
title: CTD (SBE 16 PLUS V2) measurements collected at the OBSEA underwater observatory during May, 2011
DOI: 10.1594/pangaea.911443
title: Hydrocarbon data of the cold-water sponge Halichondria panicea exposure experiment to Benzo-A-Pyrene

description: In this study, inter-tidal cold-water sponge Halichondria panicea samples were exposed to Benzo-A-pyrene for 48h (accumulation phase) and then left to recover for 13 days in clean seawater (depuration phase). Tissue samples were collected at multiple time points during the accumulation phase to conduct qPCR targeting several genes of interest. Tissue samples were also collected during the accumulation and depuration phases to determine concentration of hydrocarbon in the sponge tissue. The files provided here detail (1) the hydrocarbon data determined by GC/MS analysis and (2) the sponge log fold change data for four genes of interest derived by qPCR.
description: Entries starting with "&lt;" means that the concentration was below the limit of detection given after the sign "&lt;".
DOI: 10.1594/pangaea.902423
title: CTD (SBE 16 PLUS V2) measurements collected at the OBSEA underwater observatory during December, 2011
DOI: 10.15468/dl.2sa6p9
title: Occurrence Download

description: A dataset containing 4261 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Continent is one of (Africa, Asia, Europe)",
 "Geometry POLYGON((-26.52932 12.86532,146.05973 -0.2407,151.84385 80.71656,24.33312 63.13511,27.66587 59.20435,27.92406 56.07379,30.41835 55.1862,30.45901 52.21784,33.89106 52.45953,34.35868 51.30065,35.72087 50.97535,35.86319 50.40607,38.3436 50.26375,40.11862 49.39804,40.01696 47.95452,37.80086 47.03962,33.86034 46.06318,30.85888 46.70865,28.37379 43.73946,27.56694 44.28812,28.50288 46.45046,26.88919 48.35462,21.9513 47.74142,20.40216 46.0309,21.80432 44.54561,22.48207 44.3197,22.77253 41.28596,19.25469 39.47862,16.87096 36.04335,2.73106 39.52709,4.83155 32.45715,-26.52932 12.86532))",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "TaxonKey is Artemisia annua"
 ]
}

 The dataset includes 4261 records from 115 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0029803-251025141854904/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.1594/pangaea.902631
title: CTD (SBE 37 SMP) measurements collected at the OBSEA underwater observatory during January, 2015
DOI: 10.1594/pangaea.908967
title: Current measurements (Nortec AWAC 1 Mhz ADCP) collected at the OBSEA underwater observatory during August, 2014
DOI: 10.1594/pangaea.909291
title: Physical oceanography and carbonate chemistry measurements from lander deployment during POSEIDON cruise POS534

description: Near-seafloor CTD data with additional pH and pCO2 optical measurements from the North Sea, near the Goldeneye platform.
description: The pyroscience optical sensors seem to have taken about 2-3 days to fully settle and equilibrate with the environment, which should be considered when using the data.The last reported data is on the 25/05/2019 at 1200h. Data from the ascent of the lander (during recovery) were removed.
DOI: 10.1594/pangaea.884594
title: (Figure 4) 13 hour conservative temperature records obtained by CTD-yoyo measurements
DOI: 10.1594/pangaea.968585
title: Sea surface temperature and stable isotopes of alkenones for IODP Site 321-U1338

description: Middle Miocene to Pleistocene (1-14.5 Ma) compound-specific hydrogen and carbon isotopes of alkenones and sea surface temperature (UK'37) are obtained from the sediment record of Integrated Ocean Discovery Program (IODP) Expedition 321, Site U1338 drilled in the equatorial Pacific. The very depleted hydrogen isotope ratios suggest that factors other than the isotopic composition of seawater affect the hydrogen isotopic composition of alkenones. Comparison with modern Pacific Ocean data (see Wolhowe et al., 2015; Wolfshorndl et al., 2019) and analysis of carbon isotopes of alkenones suggest that subsurface production of alkenones at low light intensity had a strong impact on the hydrogen isotopic composition of alkenones.
DOI: 10.1594/pangaea.903217
title: Weather station (Meteo Sarti Vantage Pro2) measurements collected at the OBSEA shore station (UPC) during March, 2014
DOI: 10.1594/pangaea.932727
title: Benthic foraminiferal data of sediment core GeoB14885-1, Mauritania Margin
DOI: 10.1594/pangaea.932719
title: Benthic foraminiferal data of sediment core GeoB6718-2, Porcupine Seabight
DOI: 10.1594/pangaea.934288
title: Cold-season northern hemisphere temperature field reconstructions for 1701-1905

description: Annual-to-decadal variability in northern extratropical temperature is dominated by the cold season. However, climate field reconstructions, which would be essential for understanding the underlying mechanisms, are often based on tree ring records. These represent the growing season and hardly capture cold season effects. Here we present cold-season (October-to-May average) temperature field reconstructions for 1701-1905 based entirely on phenological data. These include mainly the freezing and thawing dates of rivers and few early-spring plant observations. We digitized and processed ice-free periods of Russian rivers as a proxy for temperature back to 1720 from ca. 800 sites. These records were complemented with other ice phenology data from Europe and North America, documentary sea-ice records from Iceland and Labrador, and plant phenological proxy records. In total, we used 68 records for the field reconstruction. Furthermore, we utilized a Bayesian reweighting method, in which 30-member ensemble AGCM simulations serve as prior temperature fields while the phenological data constrains the likelihoods/weights of each field.
DOI: 10.1594/pangaea.932759
title: Age determination of sediment core GeoB14885-1
DOI: 10.1594/pangaea.908906
title: Current measurements (Nortec AWAC 1 Mhz ADCP) collected at the OBSEA underwater observatory during July, 2010
DOI: 10.1594/pangaea.956800
title: Ba/Ca elemental ratios of Dharamjali speleothem DHAR-1A (Table X3)
DOI: 10.5281/zenodo.17595270
title: PCA
DOI: 10.15468/dl.bedxqp
title: Occurrence Download

description: A dataset containing 5174 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Country is Korea, Republic of",
 "OccurrenceStatus is Present",
 "TaxonKey is Anser fabalis"
 ]
}

 The dataset includes 5174 records from 38 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0029804-251025141854904/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.1594/pangaea.932720
title: Benthic foraminiferal data of sediment core GeoB9064-1, Gulf of Cadiz
DOI: 10.1594/pangaea.932731
title: Benthic foraminiferal data of sediment core GeoB18131-1, West Melilla