Find research datasets worth reusing
Search datasets from major research repositories and use ShareScore to quickly assess how well each record supports discovery, access, and reuse.
278
datasets available to search
ShareScore release 0.9.0
Dataset results
278 results for “water samples”
Bacterial properties in discrete water column samples at selected depths, collected aboard Palmer LTER annual cruises off the coast of the Western Antarctica Peninsula, 2003 - 2019.
The microbial biogeochemistry component of PAL focuses on marine bacterioplankton, and is thus a counterpart to the phytoplankton and zooplankton components, which together provide a detailed and comprehensive description of plankton ecology in PAL-LTER. Bacteria and Archaea (hereafter called "bacteria") are taxonomically and metabolically diverse. In coastal and offshore surface waters Bacteria generally predominate over Archaea, but Archaea are equal or greater in abundance in the mesopelagic layer below the euphoric zone. We focus on aerobic, heterotrophic bacteria in the upper 100 m on the annual summer cruise. These bacteria oxidize recently-produced low molecular weight dissolved organic compounds released by phytoplankton and zooplankton, decomposing them back into CO2 and inorganic nutrients. Globally, marine bacteria respire an amount of carbon roughly equal to about half the daily photosynthetic production. In cold polar waters, relative bacterial activity is lower, with bacterial biomass production being equal to <5% of the daily photosynthesis. The ratio at lower latitudes is 10-20%. The factors responsible for this contrast are not entirely clear. Resolving this pattern is a key aim of the PAL microbial component. Bacterial production is generally low across the grid, relative to primary production, but with considerable spatial and annual variability. Discrete BP can reach >200mgC/m2/d following bloom-fueled high organic matter events. Across the grid and over years, BP is highly correlated with chlorophyll, highlighting the close relationship with phytoplanktonic organic matter production.
Dissolved oxygen of discrete water column samples at selected depths collected aboard Palmer LTER annual cruises off the coast of the Western Antarctic Peninsula, 1993 - 2012.
Oxygen is produced by phytoplankton photosynthesis and consumed by respiration of phytoplankton, zooplankton and bacteria. Oxygen also enters and exits the ocean via physical exchange with the atmosphere. Oxygen concentrations in the surface ocean may be supersaturated by photosynthesis and turbulence enhancing air-sea exchange via bubble injection; or undersaturated due to excess respiration. In cases where exchange with the atmosphere is limited, and/or respiration exceeds photosynthesis, oxygen concentration can be reduced to very low levels (hypoxia) or entirely depleted (anoxia). This is uncommon in cold Antarctic Seas where respiration is depressed and oxygen solubility is enhanced by low temperature. Different water masses have characteristic oxygen concentrations which serve as tracers for diagnosing physical mixing and advection. Dissolved oxygen was analyzed by Winkler Titration (see Methods) in CTD-Rosette bottle samples at all depths sampled until 2012. This measurement was discontinued in 2013. The CTD has duplicate oxygen electrodes that provide continuous vertical profiles of oxygen concentration at all depths on all casts. The vessel also has continuous underway, Optode determination of dissolved oxygen in the surface (ship's intake at 6 meters depth) on all cruises. Finally we now routinely measure net community production by Equilibrator Inlet Mass Spectroscopy (EIMS) on LTER cruises
Dissolved organic carbon (DOC) taken from discrete water column samples collected during annual cruise along western Antarctic Peninsula, 2003-2012.
Dissolved organic carbon (DOC) is a poorly-characterized but large and dynamic pool of actively-cycling carbon in the oceans, and one of the largest organic carbon pools on the planet. The total DOC pool consists of three major fractions: refractory DOC resistant to microbial oxidation with a turnover time of millennia; semi-labile DOC, produced and decomposed on seasonal timescales, and labile DOC, consisting of simple, recently-produced compounds with nanomolar concentrations, and turnover times of minutes-days. The background concentration of refractory DOC in the deep ocean is 35-45 micromolar. DOC concentration in the upper 100-200 meters is enhanced by 10-50 micromolar with the addition of semilabile DOC. In subtropical and temperate oceans, semilabile DOC can form an important part of the carbon export by deep vertical mixing into the oceanic mid-depths. Concentrations of semilabile DOC are lower in the polar Southern Ocean than in most other regions.
Dissolved organic carbon (DOC) taken from discrete water column samples collected between October and April at Palmer Station, 2002-2012.
Dissolved organic carbon (DOC) is a poorly-characterized but large and dynamic pool of actively-cycling carbon in the oceans, and one of the largest organic carbon pools on the planet. The total DOC pool consists of three major fractions: refractory DOC resistant to microbial oxidation with a turnover time of millennia; semi-labile DOC, produced and decomposed on seasonal timescales, and labile DOC, consisting of simple, recently-produced compounds with nanomolar concentrations, and turnover times of minutes-days. The background concentration of refractory DOC in the deep ocean is 35-45 micromolar. DOC concentration in the upper 100-200 meters is enhanced by 10-50 micromolar with the addition of semilabile DOC. In subtropical and temperate oceans, semilabile DOC can form an important part of the carbon export by deep vertical mixing into the oceanic mid-depths. Concentrations of semilabile DOC are lower in the polar Southern Ocean than in most other regions.
Ultraviolet photodissociation for non-target screening based identification of organic micro-pollutants in water samples
<p>Raw LC-HRMS data that was used for demonstrating the the use of the fragmentation technique ultraviolet photodissociation (UVPD) for the structural elucidation of organic micropollutants (OMPs) in water samples in combination with the 'uvpd' R-package (<a href="https://github.com/cpanse/uvpd/">https://github.com/cpanse/uvpd/</a>). The dataset consists of HCD and UVPD fragmentation data of reference standard samples acquired at various collision energies and reaction times, respectively. The analyses were performed with a Vanquish Horizon UHPLC system coupled to an Orbitrap Fusion Lumos Tribrid instrument with positive and negative ESI ionization. More analytical details are in Panse et al., Molecules, submitted.</p>
Toxicity Dataset for "Efficient solar disinfection (SODIS) using polypropylene based transparent jerrycans: An investigation into its effectiveness, viability, and water sample toxicity"
<p>Toxicity data including abosrbance and percentage viability obtainbed from research for three TJC Verison 1</p> <p> </p>
FIG. 22. — A in Triphoridae (Gastropoda) from Martinique sampled by the MADIBENTHOS expedition, with notes on shallow-water species from Guadeloupe
FIG. 22. — A, number of triphorid species obtained in MADIBENTHOS by each sampling method (AB, brushing; AD, dredging; AM, visual at intertidal; AR, visual at diving; AS, suction); B, number of species sampled vs proportion of stations according to each sampling method in MADIBENTHOS.
FIG. 9. — A-F, Metaxia discus n in Triphoridae (Gastropoda) from Martinique sampled by the MADIBENTHOS expedition, with notes on shallow-water species from Guadeloupe
FIG. 9. — A-F, Metaxia discus n. sp. A, B, D, F, MNHN-IM-2000-38601, holotype, 3.2 mm; C, E, MNHN-IM-2000-38602, paratype, sta. AD245, 2.7 mm; G, H, Metaxia sp. 1 (morph named by Rolán & Fernández-Garcés [2008]), USNM 87301, 4.2 mm (vs 5.0 mm, according to Rolán & Fernández-Garcés [2008]); credits: Yolanda Villacampa (NMNH). Scale bars: A-C, G, 1 mm; D, E, 100 μm; F, H, 200 μm.
FIG. 2 in Triphoridae (Gastropoda) from Martinique sampled by the MADIBENTHOS expedition, with notes on shallow-water species from Guadeloupe
FIG. 2. — Triphoridae Gray, 1847 from Martinique - cont.: A, Latitriphora albida (A. Adams, 1854), MNHN, sta. AB149, 4.0 mm; B, Marshallora cf. modesta (C. B. Adams, 1850), MNHN, sta. AB150, 4.3 mm; C, Metaxia excelsa Faber & Moolenbeek, 1991, MNHN, sta. AB123, 3.6 mm; D, Metaxia rugulosa (C. B. Adams, 1850), MNHN, sta. AD265, 6.3 mm; E, Metaxia taeniolata (Dall, 1889), MNHN, sta. AD261, 5.5 mm; F, Monophorus olivaceus (Dall, 1889), MNHN, sta. AS576, 9.5 mm; G, Nototriphora decorata (C. B. Adams, 1850), MNHN, sta. AB390, 6.8 mm; H, Sagenotriphora osclausum (Rolán & Fernández-Garcés, 1995), MNHN, sta. AS565, 3.4 mm; I, Similiphora intermedia (C. B. Adams, 1850), MNHN, sta. AD067, 5.6 mm; J, Similiphora sp., MNHN, sta. AS552, 5.1 mm. Scale bars: 1 mm.
FIG. 11. — A-E in Triphoridae (Gastropoda) from Martinique sampled by the MADIBENTHOS expedition, with notes on shallow-water species from Guadeloupe
FIG. 11. — A-E, Nanaphora decollata (Rolán & Fernández-Garcés, 1994), MNHN, sta. GB09 (KARUBENTHOS 1), 2.9 mm; a weak micro-sculpture on the teleoconch is shown in B; F-I, Nanaphora cf. verbernei (Moolenbeek & Faber, 1989); F, G, MNHN, sta. AB130, both 3.0 mm; H, I, MNHN, sta. AB149, 2.8 mm, 3.1 mm. Scale bars: A, F-I, 1 mm; B, E, 100 μm; C, D, 200 μm.
UC-HILIC vs RP analysis of water samples
<p>UC-HILIC-HRMS vs RP-HRMS data acqusition in DDA of water samples (effluent and surfacewater). </p>
Data from: New sporopollenin-based β-cyclodextrin functionalized magnetic hybrid adsorbent for magnetic solid-phase extraction of nonsteroidal anti-inflammatory drugs from water samples.
A magnetic solid-phase extraction (MSPE) procedure on the newly synthesized magnetic β-cyclodextrin functionalized with toluene diisocyanate (TDI) as a linker and was further modified with bio-polymeric spores of sporopollenin (MSp-TDI-βCD) was developed for the extraction of nonsteroidal anti-inflammatory drugs (NSAIDs) namely indoprofen (INP), ketoprofen (KTP), ibuprofen (IBP) and fenoprofen (FNP) from water samples prior to their HPLC-DAD determination. The newly synthesised MSp-TDI-βCD was comprehensibly characterized using FT-IR, XRD, SEM-EDX, BET and VSM analyses. The separation of selected NSAIDs on MSp-TDI-βCD from aqueous solution was simply achieved by applying an external magnetic field via a permanent magnet. The MSPE parameters affecting extraction performance i.e., sorbent dosage, sample volume, extraction and desorption time, type of organic eluent and volume and solution pH were investigated and optimized. The proposed method showed linear range between 0.5 - 500 ng/mL, low limit of detection at S/N = 3 (0.16 - 0.37 ng/mL) and limit of quantification at S/N = 10 (0.53 - 1.22 ng/mL). The interday (n = 15) and intraday (n = 5) precision for the proposed methods given by relative standard deviation (RSD%) in the range of 2.5 - 4.0 and 2.1 - 5.5 respectively. The extraction recoveries of NSAIDs from environmental samples (tap, drinking and river water) ranged from 92.5 - 123.6%, with satisfactory precision (RSD% less than 12.4%).
Figure 2 from: Piazza P, Blazewicz-Paszkowycz M, Ghiglione C, Alvaro M, Schnabel K, Schiaparelli S (2014) Distributional records of Ross Sea (Antarctica) Tanaidacea from museum samples stored in the collections of the Italian National Antarctic Museum (MNA) and the New Zealand National Institute of Water and Atmospheric Research (NIWA). ZooKeys 451: 49-60. https://doi.org/10.3897/zookeys.451.8373
Figure 2 - Map of sampling stations. Green dots: samples stored at the MNA. Blue dots: samples stored at the NIWA.
Data from: New sporopollenin-based β-cyclodextrin functionalized magnetic hybrid adsorbent for magnetic solid-phase extraction of nonsteroidal anti-inflammatory drugs from water samples.
Open the record for dataset details and reuse information.
Microplastics and Microfibers extracted from box core of sediment sampled from Santa Barbara Basin, on Cal-ECHOES cruise, 2010, at 34°17.228’ N, 120°02.135’ W, in approximately 580 m water depth.
A box core was taken in the Santa Barbara Basin on the Cal-ECHOES cruise, in October 2010, at 34°17.228’ N, 120°02.135’ W, in approximately 580 m water depth. X-radiographs were taken of the core to date it to a 1-2 year timescale. The core was cut every 0.5 cm with a thin wire, oven-dried, washed, and wet-sieved over a 104 μm sieve. The >104 μm was first sorted for fish otoliths by William Jones, and then sorted again for this study for microplastics and microfibers with a dissecting microscope. Every particle was measured, photographed, and categorized. A subset of particles were also spectrally identified as plastic or not plastic via FTIR spectroscopy. These are the lengths of the particles measured.
Microplastics and Microfibers extracted from box core of sediment sampled from Santa Barbara Basin, on Cal-ECHOES cruise, 2010, at 34°17.228’ N, 120°02.135’ W, in approximately 580 m water depth.
A box core was taken in the Santa Barbara Basin on the Cal-ECHOES cruise, in October 2010, at 34°17.228’ N, 120°02.135’ W, in approximately 580 m water depth. X-radiographs were taken of the core to date it to a 1-2 year timescale. The core was cut every 0.5 cm with a thin wire, oven-dried, washed, and wet-sieved over a 104 μm sieve. The >104 μm was first sorted for fish otoliths by William Jones, and then sorted again for this study for microplastics and microfibers with a dissecting microscope. Every particle was measured, photographed, and categorized. A subset of particles were also spectrally identified as plastic or not plastic via FTIR spectroscopy.
Daily Water Sample Nutrient Data for North Inlet Estuary, South Carolina, from 1978 to 1992, North Inlet LTER
This data package consists of Daily Water Sample Nutrient Data for North Inlet Estuary, South Carolina, from 1978 to 1992, North Inlet LTER. Its purpose is to establish a long term data base on the nutrient dynamics of a salt marsh estuarine system. This data can be used in correlation with a number of other estuarine data sets to obtain a broader definition of the over all estuarine ecosystem.
Daily Water Sample Chlorophyll a, and Phaeophytin a data for North Inlet Estuary system, Georgetown, South Carolina, from 1978 to 1991, North Inlet LTER
This study purpose is to establish a long term data base on the nutrient dynamics of a salt marsh estuarine system. This data can be used in correlation with a number of other estuarine data sets to obtain a broader definition of the over all estuarine ecosystem.
Suspended Sediment. Daily Water Sample Parameter, and Sediment Data for North Inlet Estuary, South Carolina, from 1981 to 1992, North Inlet LTER
This data package consists of Daily Water Sample Parameter, and Sediment Data for North Inlet Estuary, South Carolina, from 1981 to 1992, North Inlet LTER. The purpose of this study was to to establish a long term data base on the Sediment dynamics of a salt marsh estuarine system. These data can be used in correlation with a number of other estuarine data sets to obtain a broader definition of the overall estuarine ecosystem.
Delta-X: Particulate Organic Carbon Concentration from Water Samples, MRD, LA, 2021
This dataset provides measurements of particulate organic carbon (POC) concentrations made on water samples collected during 2021 in surface waters of the Atchafalaya River and Terrebonne Basins, portions of the Mississippi River Delta in coastal Louisiana. Water samples were collected at ~0.5 m depth from surface during the spring (2021-03-25 to 2021-04-22) and fall (2021-08-14 to 2021-09-24) field efforts. Field sampling was paused on August 25 and resumed on September 13 due to the landfall of Hurricane Ida on 2021-08-26 approximately 70 km east of the study sites. Water quality changes in this dataset caused by the hurricane are expected to be minimal. Samples were collected in multiple channels of varying width (from a few meters to >100 m) near Delta-X intensive study sites, in open bays and lakes, and a few locations in the nearshore Gulf of Mexico. For each sample, the water sample volume was filtered (in triplicate) through 25-mm glass microfiber (GF/F) filters to retain the suspended particles. The amount of organic carbon retained on each filter was measured using an elemental carbon, hydrogen and nitrogen (CHN) analyzer and normalized by the volume of sample water filtered. The reported values in this dataset include the mean and standard deviation of POC measurements from three replicate samples collected at each site.
ScienceDex guides
Understand access before you commit
These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.