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534 results for “stable isotopes”
Fig. 4 in Stable isotope markers differentiate between mass-reared and wild Lepidoptera in sterile insect technique programs
Fig. 4. Isotope signature of the light brown apple moth, Epiphyas postvittana (LBAM); error bars are 2 standard deviations of the mean.
Fig. 2 in Enhanced understanding of ectoparasite-host trophic linkages on coral reefs through stable isotope analysis
Fig. 2. Stable carbon and nitrogen isotope data for Haemulon flavolineatum blood vs. P3 (A and B), blood vs. adult gnathiids (C and D), and P3 vs. adult gnathiids (E and F). Solid triangles represent males and P3s, open triangles represent females. Error bars represent 1 SE of N = 5 individual P3 gnathiids analysed from each fish. Dashed line represents 1:1 linear relationship.
Fig. 1 in Enhanced understanding of ectoparasite-host trophic linkages on coral reefs through stable isotope analysis
Fig. 1. Mean δ13C and δ15N (±1 Standard Error) values of gnathiids (open squares), (A) Haemulon flavolineatum heart (grey diamond), blood (white diamond), and muscle (black diamond), Pederson shrimp (Ancylomenes pedersoni, open triangle), and Anilocra isopods (cross), (B) Stegastes diencaeus heart (grey diamond), and muscle (black diamond), and Pederson shrimp (open triangle), and (c) Holocentrus adscenscionis heart (grey diamond), and muscle (black diamond), and Anilocra isopods (cross).
Fig. 3 a in A study on benthic molluscs and stable isotopes from Kutch, western India reveals early Eocene hyperthermals and pronounced transgression during ETM2 and H2 events
Fig. 3 a Amber, plant fossil and glauconite pocket within shale indicated by yellow, blue and green arrows, respectively. b Granular amber within black shale. c Pyroclastics of unit 1. d Grey shale with amber (yellow arrow) and plant fossils (blue arrow) in unit 2. e Black shale with amber (yellow arrow) and plant fossils (blue arrow) in unit 2. f Grey shale with glauconite pocket (green oval) in unit 2. g Grey shale with pyrite (yellow oval) and plant matter (blue arrow) in unit 2. h Green shale in unit 3, glauconite indicated by green arrow; white dots are fragments of fossil molluscs. i Grey shale with pockets of glauconite and mollusc fragments in unit 3. j Green shale with pyrite (yellow arrow) in unit 3. k Shell limestone with mollusc fossils in unit 3; yellow and green arrows indicate Caestocorbula sp. and Claibornicardia sp., respectively. l Mollusc concentration in upper part of unit 3. m Black shale with plant fossil (blue arrow) in unit 4. n Lignite in unit 4. o Ferricrete in unit 4. Scale bars 10 mm
Fig. 2 in Parasites in Myodes glareolus and their association with diet assessed by stable isotope analysis
Fig. 2. The relationship between parasite intensity and δ 15N values for the mite Listrophorus brevipes in September (S1) and October (S2) samples of Myodes glareolus. Note the log-scale for parasite abundance.
Fig. 3 in Parasites in Myodes glareolus and their association with diet assessed by stable isotope analysis
Fig. 3. The average Pearsons Correlation Coefficient (error bars: SE) between abundance and δ 13C and δ 15N for the two parasite groups: ecto and endoparasite for females (left) and males (right). The data includes 13 parasites occurring on 5 or more individuals and indicate consistent correlations for endoparasites and δ 15 N, while this is not the case for δ 13C.
Fig. 1 in Parasites in Myodes glareolus and their association with diet assessed by stable isotope analysis
Fig. 1. The relationship between δ 13C and δ 15N values for the 21 Myodes glareolus sampled from Kongelunden Denmark in September (S1) and October (S2). The rodents present great variation in isotope values.
Stable Water Isotope Surveys - Muskoka River Watershed ON CA 2015-16
<p>This dataset includes river stable water isotope surveys from the Muskoka River watershed ON CA, conducted from April 2015 through November 2016. Ten river survey sites and one headwater stream site are included with listed site ID, sample date and ratios of oxygen and hydrogen isotope ratios. Data includes location of river survey sites and additional source water sampling sites (precipitation, snowmelt, groundwater). Daily average streamflow records for the 2015-2016 period of surveys originally sourced from the Water Survey of Canada website are included here (but can also be downloaded independently) for four of the six gauging stations referenced with the river survey isotope dataset. Water Survey of Canada gauging station locations are also provided.</p>
Fig. 1 in Stable isotope analysis spills the beans about spatial variance in trophic structure in a fish host - parasite system from the Vaal River System, South Africa
Fig. 1. Map of the Vaal River showing the position of sampling sites (I: below Grootdraai Dam; II: Vaal Dam; III: below Vaal River Barrage; IV: Bloemhof Dam; V: below Vaalharts Weir; VI: Douglas Weir) along the Vaal River. The block (B) indicates the position of the Vaal River within South Africa and insert A indicates the position of South Africa shaded on the African continent.
Fig. 1 in Using hydrogen stable isotope ratios to trace the geographic origin of the population of Bactrocera dorsalis (Diptera: Tephritidae) trapped in northern China
Fig. 1. Implied relationship standard curve equation between Bactrocera dorsalis and precipitation based on a δ2H stable isotope (solid line indicates the linear regression and dash lines indicate the 95% confident intervals).
Figure 2 in Stable isotope record from snow pit ITASE_S2
Figure 2 – Distributional records of Oxycheilinus samurai. Circles and stars indicate specimen- and photograph- based records, respectively. Open and closed symbols indicate previously published records and new records, respectively.
Figure 3 in Stable isotope record from snow pit ITASE_S2
Figure 3. – Preserved specimen of Oxycheilinus samurai from Payo Bay, Halmahera, Indonesia (WAM P. 32973-003, 46.3 mm SL).
Figure 1 in Stable isotope record from snow pit ITASE_S2
Figure 1. – Underwater photographs of Oxycheilinus samurai from Prony Bay, New Caledonia, 25-30 m depth. Photo: R. Bajol.
Surface Sedimentary Black Carbon Concentrations, Fluxes, and Stable and Radiocarbon Isotopes in the Equatorial Atlantic Ocean
<p><strong>Abstract</strong></p> <p>Surface sediments (0-1 cm) obtained from equatorial Atlantic Ocean isolated for black carbon using the chemothermal oxidation at 375 method. Multicores were taken during aboard the R.V. Endeavor (EN651) from February 27th 2020 through March 17th 2020 using a MC-800.</p> <p><strong>Core collection</strong></p> <p>MC-800 tubes were labeled (EN651-“Site number”-MC”coring attempt number”“letter of core”,ex: EN651-01-MC01a) and photographed before sectioning. The water on top of the core was syphoned off and a thin piece of stainless-steel sheet was slid under the foot of the tube. The foot was bent up and the stainless-steel sheet was used to transfer the core to the core extruder. Cores were sectioned at 1 cm intervals down to 10 cm, then 2 cm intervals down to 20 cm, using the piece of stainless-steel and a cake spatula to cut them. The remainder of the core was wrapped in combusted aluminum foil and placed in a zip-lock bag for storage. Sections of cores were stored in amber glass jars placed in a freezer. One core was transferred with the extruder to a PVC tube and capped for archival storage. If 5 or more cores were recovered, 0.5 cm sections would be taken down to 10 cm and the remainder of the core wrapped in foil and zip-lock bagged before being frozen. Due to a limited supply of jars, the 0.5 cm core sections were wrapped in combusted aluminum foil and placed in a ziplock bag before being stored with other samples. All cores and core sections were stored at -20 ̊C.</p> <p><strong>Analytical methods</strong><br>Surface sediment samples (0 – 1 cm) were dried at 60 ˚C until dry and passed through a 420 µm sieve before analysis. Total organic carbon samples were weighed into silver capsules (Elemental microanalysis silver capsules ultra-clean pressed 8 x 5 mm, D2030), acidified to remove inorganic carbon (2 M HCl), and folded into tin capsules (Costech tin capsules 10 x 10 mm, 041073). Black carbon was isolated using the CTO 375 method 34. 100 mg of samples where weighed out into ceramic crucibles and spread into a thin layer prevent charring. Sample were combusted at 375 ˚C for 24 hrs. under the flow of ultra high purity air (0.4 L min<sup>-1</sup>). The remaining sediment was transferred to GC vials for storage, then processed the same as the TOC samples to remove any inorganic carbon present (as detailed above).</p> <p><strong>Sampling equipment</strong></p> <p>Sediment cores were collected using an MC-800</p> <p><strong>Analytical instrumentation</strong></p> <p> An Elemental Analyzer (Costech 4010 Elemental Analyzer) was used for quantification of the BC and TOC fractions. The same elemental analyzer coupled to an Isotope Ratio Mass Spectrometer (Thermo Delta V Advantage) was used for the sample carbon isotopes. Radiocarbon isotopes were measured at the National Ocean Sciences Accelerator Mass spectrometry.</p> <p><strong>Parameter names, descriptions, units</strong></p> <p>Name, "Name of the sediment core from which the top 1 cm was sectioned"<br>Collection Date, "Date the multicore was collected, month/day/year<br>Lat, "Latitude of sampling site", decimal degrees<br>Lon, "Longitude of sampling site", decimal degrees<br>Depth, "Water depth of sample site", meters (m)<br>MAR, "Mass accumulation rate", grams per square centimeters per thousand years (g cm<sup>-2</sup> kyr<sup>-1</sup>), blank = no data<br>TOC, "Total organic carbon concentration", milligrams per gram dry weight (mg g<sup>-1</sup>)<br>TOC d13C, "Total organic carbon δ<sup>13</sup>C value", per mill (‰)<br>TOC D14C, "∆<sup>14</sup>C value of TOC calibrated for a reservoir age of 550 years", per mill (‰), blank = no data<br>BC, "Black carbon concentration", milligrams per gram dry weight (mg g<sup>-1</sup>)<br>BC sd, "Black carbon concentration standard deviation", milligrams per gram dry weight (mg g<sup>-1</sup>)<br>BC d13C, "Black carbon delta <sup>13</sup>C value", per mill (‰), NA<br>BC D14C, "∆<sup>14</sup>C value of the BC", per mill (‰), blank = no data<br>BC flux, "Flux of black carbon to sediments", milligrams per square centimeters per thousand years (mg cm<sup>2</sup> kyr<sup>-1</sup>), blank = no data<br>BC flux sd, "The standard devation of the flux of black carbon to sediments", milligrams per square centimeters per thousand years (mg cm<sup>2</sup> kyr<sup>-1</sup>), blank = no data</p>
Data for Stable isotope composition of long and short term carbon pools can screen drought tolerance in cassava
<p>This repository contains data and scripts to reproduce results that are presented in the article: Van Laere, J., Martinez Maya, M.A., Selvaraj M.G., Becerra Lopez-Lavalle, L.A., Guzman, D., Casas, J.A., Merckx, R., Hood-Nowotny, R., Dercon, G. (2024)<strong> Stable isotope composition of long and short term carbon pools can screen drought tolerance in cassava</strong>. <em>Field Crops Research. </em>https://doi.org/10.1016/j.fcr.2024.109586</p>
Stable-isotope resolved metabolomics in macrophages
Open the record for dataset details and reuse information.
Acid fractionation during carbonate digestion with phosphoric acid – Assessment of two different techniques applied for clumped and stable isotope analysis using a Tuneable Infrared Laser Differential Absorption Spectrometer (TILDAS) [dataset]
<p>Date files : </p> <table> <tbody> <tr> <td> <p>Data 1 (Relationship between Mixing ratio difference of sample and WRG and D638 value).xlsx;Data 2 (Role of bulk isotope composition (δ628 & δ636) on Δ638).xlsx;Data 3 (CDES scale conversion).xlsx;Data 4 (VPDB scale conversion for d628 and d636).xlsx;Data 5 (Reference material values).xlsx;Data 6 (Break seal method acid fractionation factor of calcite).xlsx;Data 7 (IAB method acid fractionation factor of calcite).xlsx</p> </td> </tr> </tbody> </table>
Linked collectors and determiners for: (Appendix 9) Stable oxygen isotope record of Globigerina bulloides, and abundances of Neogloboquadrina pachyderma and ice-rafted debris in sediment core MD99-2331.
Natural history specimen data linked to collectors and determiners held within, "(Appendix 9) Stable oxygen isotope record of Globigerina bulloides, and abundances of Neogloboquadrina pachyderma and ice-rafted debris in sediment core MD99-2331". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="https://bionomia.net/dataset/7c8fa7a0-f762-11e1-a439-00145eb45e9a">https://bionomia.net/dataset/7c8fa7a0-f762-11e1-a439-00145eb45e9a</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/7c8fa7a0-f762-11e1-a439-00145eb45e9a">https://gbif.org/dataset/7c8fa7a0-f762-11e1-a439-00145eb45e9a</a>. Formatted as a Frictionless Data package.
Linked collectors and determiners for: (Appendix 8) Stable oxygen isotope record of Globigerina bulloides, and abundances of Neogloboquadrina pachyderma and ice-rafted debris in sediment core MD99-2339.
Natural history specimen data linked to collectors and determiners held within, "(Appendix 8) Stable oxygen isotope record of Globigerina bulloides, and abundances of Neogloboquadrina pachyderma and ice-rafted debris in sediment core MD99-2339". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="https://bionomia.net/dataset/7c8bc98c-f762-11e1-a439-00145eb45e9a">https://bionomia.net/dataset/7c8bc98c-f762-11e1-a439-00145eb45e9a</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/7c8bc98c-f762-11e1-a439-00145eb45e9a">https://gbif.org/dataset/7c8bc98c-f762-11e1-a439-00145eb45e9a</a>. Formatted as a Frictionless Data package.
Linked collectors and determiners for: (Appendix 6) Stable oxygen isotope record of Globigerina bulloides and abundance of Neogloboquadrina pachyderma in sediment core MD95-2041.
Natural history specimen data linked to collectors and determiners held within, "(Appendix 6) Stable oxygen isotope record of Globigerina bulloides and abundance of Neogloboquadrina pachyderma in sediment core MD95-2041". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="https://bionomia.net/dataset/7c86987c-f762-11e1-a439-00145eb45e9a">https://bionomia.net/dataset/7c86987c-f762-11e1-a439-00145eb45e9a</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/7c86987c-f762-11e1-a439-00145eb45e9a">https://gbif.org/dataset/7c86987c-f762-11e1-a439-00145eb45e9a</a>. Formatted as a Frictionless Data package.
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Allen Brain Atlas
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International Brain Laboratory public data
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OpenNeuro
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