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.
133
datasets available to search
ShareScore release 0.9.0
Dataset results
133 results for “isotope analysis”
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. 25 in Faunal dynamics across the Silurian-Devonian positive isotope excursions (δ C, δ O) in Podolia, Ukraine: Comparative analysis of the Ireviken and Klonk events
Fig. 25. Scheme of main environmental changes and faunal responses across the Klonk Event and the S–D transition carbon isotope excursion (SIDECIE) in the Dnistrove succession. Sea−level pattern after Walliser (1996: fig. 1; see other sea−level curves in Haq and Schutter 2008: fig. 2; Brett et al. 2009: fig. 20; Johnson 2010: fig. 1; Munnecke et al. 2010: fig. 2); for discussion of differently recorded eustasy, as well as climatic setting see Buggisch and Joachimski (2006) and Małkowski and Racki (2009). Shades of gray denote two slices of the SIDECIE.
Fig. 24 in Faunal dynamics across the Silurian-Devonian positive isotope excursions (δ C, δ O) in Podolia, Ukraine: Comparative analysis of the Ireviken and Klonk events
Fig. 24. Scheme of main environmental changes and faunal responses across the Ireviken Event and early Sheinwoodian carbon isotope excursion (ESCIE) in the Kytayhorod succession. Overall eustatic pattern and climatic events compiled from Johnson (2010: fig. 2; see other sea−level curves in Lüning et al. 2000: fig. 9; Cramer and Saltzman 2007: fig. 5; Brett et al. 2009: fig. 20; Ray and Butcher 2010: fig. 1) and Lehnert et al. (2010: figs. 1–3), respectively. Regional bathymetric curve modified from Koren et al. (1989: fig. 1). Note a distinctive discrepancy of the both sea−level patterns in some intervals, probably mostly controlled by regional epeirogenic activity in the Podolian shelf domain. Shades of gray denote three slices of the ESCIE.
Fig. 23. Faunal dynamics through the Klonk Event and S–D in Faunal dynamics across the Silurian-Devonian positive isotope excursions (δ C, δ O) in Podolia, Ukraine: Comparative analysis of the Ireviken and Klonk events
Fig. 23. Faunal dynamics through the Klonk Event and S–D transition carbon isotope excursion (SIDECIE) at Dnistrove. Shades of gray denote two slices of the SIDECIE.
Fig. 22 in Faunal dynamics across the Silurian-Devonian positive isotope excursions (δ C, δ O) in Podolia, Ukraine: Comparative analysis of the Ireviken and Klonk events
Fig. 22. Stereoscan microphotographs of selected Chitinozoa from the Dnistrove section. A, H. Calpichitina aff. gregaria Paris and Křiž, 1984. A. Single specimen in oblique lateral view, ZPAL Ch. 8/159S117, sample V−15. H. Vesicles aggregated in cluster, ZPAL Ch. 8/161S101, sample V−13. B. Calpichitina velata (Wrona, 1980), ZPAL Ch 8/160S53, sample V−27. C. Pterochitina sp., ZPAL Ch. 8/152S099, sample V−28. D. Vinnalochitina pilosa (Wrona, 1980), ZPAL Ch 8/159S054, sample V−27. E–F. Vinnalochitina cf. suchomastyensis Paris and Laufeld, 1981. E. ZPAL Ch 8/152S054, sample V−25. F. ZPAL Ch 8/152S107, sample V−27. G, K–N. Urnochitina urna (Eisenack, 1934). G. ZPAL Ch 8/160S55, sample V−09. K. Specimen with wide copula and operculum attached, ZPAL Ch 8/160S102, sample V−10. L. Detail of aboral part showing operculum attachment, ZPAL Ch 8/160S85, sample V−10. M. Chain of three closely similar vesicles, ZPAL Ch 8/161S112, sample V−13. N. Two marginal vesicles of a chain, showing small terminal vesicle, ZPAL Ch 8/161S104, sample V−15. I. Cingulochitina ex. gr. ervensis (Paris, 1979), Chain of four vesicles, ZPAL Ch 8/159S094, sample V−27. J. Margachitina catenaria Obut, 1973, Chain of three vesicles, ZPAL Ch 8/159S094, sample V−27. O–Q. Eisenackitina barrandei Paris and Křiž, 1984. O. ZPAL Ch 8/161S001, sample V−04. P. ZPAL Ch 8/152S017, sample V−05. Q. ZPAL Ch 8/152S058, sample V−13. R. Ramochitina cf. longispina (Wrona, 1980), ZPAL Ch 8/172S077, sample V−03. S. Ancyrochitina cf. aurita Wrona, 1980, ZPAL Ch 8/159Y02, sample V−27. T–V. Anthochitina ex. gr. superba Eisenack, 1971. T. ZPAL Ch 8/152S056, sample V−25. U. ZPAL Ch 8/159S042, sample V−25. V. ZPAL Ch 8/159S082, sample V−25. W. Angochitina sp., ZPAL Ch 8/159S160, sample V−13. X. Eisenackitina sp., ZPAL Ch 8/160S54, sample V−03. Y. Eisenackitina bohemica (Eisenack, 1934), ZPAL Ch 8/159S127, sample V−23. Scale bars 50 µm.
Fig. 7 in Faunal dynamics across the Silurian-Devonian positive isotope excursions (δ C, δ O) in Podolia, Ukraine: Comparative analysis of the Ireviken and Klonk events
Fig. 7. Stratigraphical distribution of the Al−normalized abundance for selected major and trace elements as well as Al2O3 and TOC contents (wt. %) and the U/Th ratio (for redox thresholds see Racka et al. 2010) from the Kytayhorod section (see SOM 2). Thicker vertical lines indicate level of the ratios for average limestone after Wedepohl (1971, 1991). Approximated proxy values, resulted from the content of Mo below the detection levels, are asterisked. Shades of gray denote three slices of the ESCIE.
Fig. 11 in Faunal dynamics across the Silurian-Devonian positive isotope excursions (δ C, δ O) in Podolia, Ukraine: Comparative analysis of the Ireviken and Klonk events
Fig. 11. Lowermost Wenlock lithologic and faunal succession at Kytayhorod, against the key brachiopod assemblages (see Fig. 10) and a representative micritic microfacies of the Restiv Beds, i.e., bioturbated skeletal wackestone to packstone with shelly bioclasts, crinoids, and trilobites (compare Fig. 5). Note onset of the carbon isotope excursion (ESCIE) before the ending of Ireviken Event.
Fig. 21 in Faunal dynamics across the Silurian-Devonian positive isotope excursions (δ C, δ O) in Podolia, Ukraine: Comparative analysis of the Ireviken and Klonk events
Fig. 21. Distribution of chitinozoans species, diversity, and ecological indices through the S–D boundary beds in the Dnistrove section. Shades of gray denote two slices of the SIDECIE.
Fig. 8 in Faunal dynamics across the Silurian-Devonian positive isotope excursions (δ C, δ O) in Podolia, Ukraine: Comparative analysis of the Ireviken and Klonk events
Fig. 8. Secular trends of δ13C and δ18O values in carbonate and organic matter, Δ13C and total organic carbon from section 64 near Dnistrove village (see SOM 3). Two slices S−1 to S−3 (marked by shades of grey) denote of the Silurian–Devonian transition carbon isotope excursion (SIDECIE): the interval S−3 corresponds to the isotopic highstand; S−2 to the increasing curve segment, and S−1 to the regional background. Lithology after Nikiforova et al. (1972: fig. 82), modified. Note that the Klonk biotic event (crossed band) is associated roughly with the final positive shift (S−2) and initial highstand (S−3) δ13C curve slices; its lower event boundary corresponds to a collapse of carbonate production and chitinozoan crisis near the base of Dnistrove Level, and the upper boundary is questionably placed below an acme level of brachiopod and conodont faunas (see Figs. 4 and 23).
Fig. 15 in Faunal dynamics across the Silurian-Devonian positive isotope excursions (δ C, δ O) in Podolia, Ukraine: Comparative analysis of the Ireviken and Klonk events
Fig. 15. Conodont and graptolite distribution in the Kytayhorod section. Numbers near the ovals are numbers of specimens in the sample. Shades of gray denote three slices of the ESCIE.
Fig. 1 in Faunal dynamics across the Silurian-Devonian positive isotope excursions (δ C, δ O) in Podolia, Ukraine: Comparative analysis of the Ireviken and Klonk events
Fig. 1. Schematic compilation of positive δ13C excursions and global events in the Late Ordovician to Early Devonian interval (adapted from Stricanne et al. 2006: fig. 1; for more refined composite isotopic curve see Cramer et al. 2011a: fig. 3; for discussion of the Silurian timescale see Cramer et al. 2011b and Melchin et al. 2012). Abbreviations: Dev., Devonian; ESCIE, early Sheinwoodian carbon isotope excursion; SIDECIE, Silurian–Devonian carbon isotope excursion.
Fig. 18 in Faunal dynamics across the Silurian-Devonian positive isotope excursions (δ C, δ O) in Podolia, Ukraine: Comparative analysis of the Ireviken and Klonk events
Fig. 18. Faunal dynamics across the Ireviken Event and early Sheinwoodian carbon isotope excursion (ESCIE) in the Kytayhorod section. Shades of gray denote three slices of the ESCIE.
Fig. 10 in Faunal dynamics across the Silurian-Devonian positive isotope excursions (δ C, δ O) in Podolia, Ukraine: Comparative analysis of the Ireviken and Klonk events
Fig. 10. Distribution of brachiopod species, diversity, and ecological indices through the Kytayhorod Horizon in Kytayhorod section. Dominating species are marked with thicker lines. Shades of gray denote three slices of the ESCIE.
Fig. 19 in Faunal dynamics across the Silurian-Devonian positive isotope excursions (δ C, δ O) in Podolia, Ukraine: Comparative analysis of the Ireviken and Klonk events
Fig. 19. Distribution of brachiopod species, diversity, and ecological indices through the S–D passage beds at Dnistrove. Dominating species marked with thicker lines. Shades of gray denote two slices of the SIDECIE.
Fig. 14. Silurian brachiopods from the Kytayhorod section. A. Meristina bilobata Modzalevskaya, 1980 in Faunal dynamics across the Silurian-Devonian positive isotope excursions (δ C, δ O) in Podolia, Ukraine: Comparative analysis of the Ireviken and Klonk events
Fig. 14. Silurian brachiopods from the Kytayhorod section. A. Meristina bilobata Modzalevskaya, 1980, ZPAL Bp 71/24, shell in dorsal (A1), ventral (A2), lateral (A3), posterior (A4), and anterior (A5) views; Demshyn beds, sample D2. B. Meristina incrassata Modzalevskaya, 1980, ZPAL Bp 71/25, shell in dorsal (B1), ventral (B2), lateral (B3), posterior (B4), and anterior (B5) views; Maryanivka beds, sample M1. C. Meristina podolica (Nikiforova, 1954), ZPAL Bp 71/26, shell in dorsal (C1), ventral (C2), lateral (C3), posterior (C4), and anterior (C5) views; upper part of the Restiv beds. D. Glassia elongata Davidson, 1881, ZPAL Bp 71/27, shell in dorsal (D1), ventral (D2), lateral (D3), posterior (D4), and anterior (D5) views; Restiv beds, 0.8 m above sample R−1. E. Howellella globosa Tsegelnyuk, 1976, ZPAL Bp 71/28, in dorsal (E1), ventral (E2), lateral (E3), posterior (E4), and anterior (E5) views; lower part of the Maryanivka beds. F. Eospirifer radiatus (Sowerby, 1834), ZPAL Bp 71/29, slightly incomplete shell in dorsal (F1), ventral (F2), lateral (F3), posterior (F4), and anterior (F5) views; Demshyn beds. Scale bars 2 mm.
Fig. 13. Silurian brachiopods from the Kytayhorod section. A in Faunal dynamics across the Silurian-Devonian positive isotope excursions (δ C, δ O) in Podolia, Ukraine: Comparative analysis of the Ireviken and Klonk events
Fig. 13. Silurian brachiopods from the Kytayhorod section. A. Plagiorhycha depressa (Sowerby, 1839), ZPAL Bp 71/16, shell in dorsal (A1), ventral (A2), lateral (A3), posterior (A4), and anterior (A5) views; Restiv beds, sample R1. B, C. Atrypina barrandii (Davidson, 1848), ZPAL Bp 71/17 (B), ZPAL Bp 71/18 (C), two shells in dorsal (B1, C1), ventral (B2, C2), lateral (B3, C3), posterior (B4, C4), and anterior (B5, C5) views; upper part of the Restiv beds (B) and upper part of the Demshyn beds (C). D. Plectatrypa imbricata (Sowerby, 1839), ZPAL Bp 71/19, shell in dorsal (D1), ventral (D2), lateral (D3), posterior (D4), and anterior (D5) views; Demshyn beds, sample D1. E. Oglupes sp., ZPAL Bp 71/20, shell with partially preserved frills in ventral view; Restiv beds, sample R2. F. Sphaerirhynchia aff. wilsoni (Sowerby, 1816), ZPAL Bp 71/21, complete shell in dorsal (F1), ventral (F2), lateral (F3), posterior (F4), and anterior (F5) views; Demshyn beds. G. Antirhynchonella linguifera (Sowerby, 1839), ZPAL Bp 71/22, large shell in dorsal (G1), ventral (G2), lateral (G3), posterior (G4), and anterior (G5) views; lower part of the Maryanivka beds. H. Atrypa sp., ZPAL Bp 71/23, shell in dorsal (H1), ventral (H2), lateral (H3), posterior (H4), and anterior (H5) views; Demshyn beds. Scale bars 2 mm.
Fig. 17 in Faunal dynamics across the Silurian-Devonian positive isotope excursions (δ C, δ O) in Podolia, Ukraine: Comparative analysis of the Ireviken and Klonk events
Fig. 17. Stereoscan microphotographs of selected Chitinozoa from the Kytayhorod section. A, H. Margachitina margaritana (Eisenack, 1937). A. ZPAL Ch. 8/170S42, sample Kt 06/03; chain of ten vesicles in lateral view (A1) and detail of the connetcion between the vesicle (A2). H. ZPAL Ch. 8/170S32, sample Kt 08/11; fragment of a chain of two slightly deformed vesicles showing how aperture is linked to the succeeding vesicle. B. Calpichitina densa (Eisenack, 1962), ZPAL Ch 8/176S58, sample Kt 06/15. C. Pterochitina cf. macroptera Eisenack, 1959, ZPAL Ch. 8/156S128, sample Kt 06/16. D. Ancyrochitina sp., ZPAL Ch 8/176S58, sample Kt 06/06. E. Eisenackitina dolioliformis Umnova, 1976, ZPAL Ch 8/176S73, sample Kt 06/05. F. Cingulochitina odiosa (Laufeld, 1974), ZPAL Ch 8/172S46, sample Kt 06/16. G. Cingulochitina crassa Nestor, 1994, ZPAL Ch 8/172S48, sample Kt 06/13. I. Angochitina longicollis Eisenack, 1959, ZPAL Ch. 8/157S62, sample Kt 08/10. J. Ancyrochitina primitiva Eisenack, 1964, ZPAL Ch 8/176S58, sample Kt 06/08. K. Eisenackitina lagena (Eisenack, 1968), ZPAL Ch 8/176S70, sample Kt 06/03. L, M. Conochitina proboscifera Eisenack, 1937. L. ZPAL Ch 8/176S50, sample Kt 06/17. M. ZPAL Ch 8/176S41, sample Kt 06/14. N. Conochitina tuba Eisenack, 1932, ZPAL Ch 8/176S40, sample Kt 06/16. O, P. Conochitina pachycephala Eisenack, 1964. O. ZPAL Ch 8/176S39, sample Kt 06/18. P. ZPAL Ch 8/176S44, sample Kt 06/17. Q. Conochitina cf. mamilla Laufeld, 1974, ZPAL Ch 8/176S27, sample Kt 06/13. R. Conochitina sp. ZPAL Ch 8/176S29, sample Kt 06/11. S. Cingulochitina cingulata (Eisenack, 1937), ZPAL Ch 8/172S55, sample Kt 06/15.
Fig. 6. A in Faunal dynamics across the Silurian-Devonian positive isotope excursions (δ C, δ O) in Podolia, Ukraine: Comparative analysis of the Ireviken and Klonk events
Fig. 6. A. Secular trends of δ13C and δ18O values in carbonate and organic matter, Δ13C and total organic carbon from section 96 near Kytayhorod village (see SOM 1). Lithology after Nikiforova et al. (1972: fig. 82), modified. Three slices E−1 to E−3 (marked by shades of grey) denote of the early Sheinwoodian (ESCIE) carbon isotope excursion: the interval E−2 corresponds to the isotopic highstand (see a widened excursion definition in Cramer et al. 2010, also Sadler 2012); E−1 and E−3 to the increasing and decreasing curve segments, respectively, and E−4 to the regional background. Note that the Ireviken biotic event (crossed band) correlates with the initial positive δ13C shift slice (E−1); the lower event boundary corresponds the last occurrence of conodont Pseudooneotodus tricornis, and the upper boundary is questionably placed above the disappearance of chitinozoan Eisenackitina cf. dolioliformis (Figs. 15, 16; see Jeppsson 1997; Nestor et al. 2002;). Approximated Δ13C levels are calculated for δ13Cvalues averaged for two stratigraphically adjacent samples, carb as shown also by a dotted line of the curve. The microfacies illustrated are marked as rectangles. B. General view of the natural outcrop in the Dniester River valley (Tarnawa tributary) near Kytayhorod village; arrow indicates the main sampled site.
Fig. 2. A in Faunal dynamics across the Silurian-Devonian positive isotope excursions (δ C, δ O) in Podolia, Ukraine: Comparative analysis of the Ireviken and Klonk events
Fig. 2. A. General location of the study area in Ukraine. B. Distribution of the Silurian and Devonian deposits in Podolia, SW Ukraine, and geological setting of the study area. C. Location of two sampled outcrops (arrowed) in the vicinity of Dniester valley (modified from Małkowski et al. 2009: fig. 1). Section numbers after Nikiforova et al. (1972): Kytayhorod (96) and Dnistrove (64).
Fig. 16 in Faunal dynamics across the Silurian-Devonian positive isotope excursions (δ C, δ O) in Podolia, Ukraine: Comparative analysis of the Ireviken and Klonk events
Fig. 16. Distribution of chitinozoans species, diversity, and ecological indices in the Kytayhorod section. Shades of gray denote three slices of the ESCIE.
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.