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Journal articles on the topic 'Analyse des isotope stables'

Author: Grafiati

Published: 28 January 2023

Last updated: 31 July 2025

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1

Siliézar, Alicia, Sandra Pichler, Gabriele Graenert, and Claudia Gerling. "Ernährung im frühmittelalterlichen Gurmels : Analysen stabiler Isotope an merowingerzeitlichen Individuen vom Dürrenberg FR." Jahrbuch Archäologie Schweiz = Annuaire d'Archéologie Suisse = Annuario d'Archeologia Svizzera 107 (2024) (June 18, 2024): 165–79. https://doi.org/10.5281/zenodo.10998026.

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Keywords: Frühmittelalter; Merowingerzeit; Gurmels; Dürrenberg; Bestattungen; stabile Isotopenanalysen; Ernährung; Gesellschaft. – Haut Moyen Âge ; époque mérovingienne ; Cormondes ; Dürrenberg ; inhumations ; analyses des isotopes stables ; alimentation ; société. – Alto Medioevo; periodo merovingio; Gurmels; Dürrenberg; sepolture; analisi degli isotopi stabili; nutrizione; società. – Early Middle Ages; Merovingian period; Gurmels; Dürrenberg; burials; stable isotope analyses; diet; society.

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Fitzsimons, I. C. W., B. Harte, and R. M. Clark. "SIMS stable isotope measurement: counting statistics and analytical precision." Mineralogical Magazine 64, no. 1 (2000): 59–83. http://dx.doi.org/10.1180/002646100549139.

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AbstractAnalytical precision is vital in the interpretation of stable isotope data collected by secondary ion mass spectrometry (SIMS) given the small analysis volumes and the small magnitude of natural isotopic variations. The observed precision of a set of measurements is represented by the standard deviation(precision of an individual measurement) or the standard error of the mean (precision of the mean value). The SIMS data show both systematic variations with time and random Poisson variability, but the former largely cancel out when data for two different isotopes are expressed as a rati

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Halley, Duncan J., Masao Minagawa, Mauri Nieminen та Eldar Gaare. "Preservation in 70% ethanol solution does not affect δ¹³C and δ¹⁵N values of reindeer blood samples – relevance for stable isotope studies of diet". Rangifer 28, № 1 (2008): 9. http://dx.doi.org/10.7557/2.28.1.146.

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We compared duplicate samples of whole blood samples from 18 reindeer that were preserved either by immediate freezing or by immersion in 70 % ethanol. All samples were dried at 60 °C, powdered, treated with 1:1 chloroform: methanol, and dried again before isotope analysis. There were no differences in the values of δ13C and δ15N between the methods of preservation. Isotopic differences were absolutely small (δ13C = 0.1±0.10/00; δ15N=0.2±0.20/00), random in direction, and within the limits of analytical precision for the mass spectrometer. Preservation in ethanol thus appears to be an effectiv

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Stenroth, Patrik, Niklas Holmqvist, Per Nyström, Olof Berglund, Per Larsson, and Wilhelm Granéli. "Stable isotopes as an indicator of diet in omnivorous crayfish (Pacifastacus leniusculus): the influence of tissue, sample treatment, and season." Canadian Journal of Fisheries and Aquatic Sciences 63, no. 4 (2006): 821–31. http://dx.doi.org/10.1139/f05-265.

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Stable isotopes have been used to analyse food webs and (or) trace movements of animals for about 30 years. There has been some debate on the use of different tissues and treatments before isotope analysis, as well as on seasonal effects. We found different crayfish (Pacifastacus leniusculus) tissues (muscle, hepatopancreas, exoskeleton, gill, and whole body) to have different isotope values. Lipid extraction made whole-body carbon isotope values higher but had no effect on nitrogen isotope values. Acidification made whole-body isotope values lower. For crayfish, there was no seasonal or inter

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5

Dietermann, N., and M. Weiler. "Spatial distribution of stable water isotopes in alpine snow cover." Hydrology and Earth System Sciences 17, no. 7 (2013): 2657–68. http://dx.doi.org/10.5194/hess-17-2657-2013.

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<p><strong>Abstract.</strong> The aim of this study was to analyse and predict the mean stable water isotopic composition of the snow cover at specific geographic locations and altitudes. In addition, the dependence of the isotopic composition of the entire snow cover on altitude was analysed. Snow in four Swiss catchments was sampled at the end of the accumulation period in April 2010 and a second time during snowmelt in May 2010 and analysed for stable isotope composition of <sup>2</sup>H and <sup>18</sup>O. The sampling was conducted at both south-f

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Laepple, Thomas, Thomas Münch, Mathieu Casado, Maria Hoerhold, Amaelle Landais, and Sepp Kipfstuhl. "On the similarity and apparent cycles of isotopic variations in East Antarctic snow pits." Cryosphere 12, no. 1 (2018): 169–87. http://dx.doi.org/10.5194/tc-12-169-2018.

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Abstract. Stable isotope ratios δ18O and δD in polar ice provide a wealth of information about past climate evolution. Snow-pit studies allow us to relate observed weather and climate conditions to the measured isotope variations in the snow. They therefore offer the possibility to test our understanding of how isotope signals are formed and stored in firn and ice. As δ18O and δD in the snowfall are strongly correlated to air temperature, isotopes in the near-surface snow are thought to record the seasonal cycle at a given site. Accordingly, the number of seasonal cycles observed over a given

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Macaulay, C. I., A. E. Fallick, R. S. Haszeldine, and C. M. Graham. "Methods of laser-based stable isotope measurement applied to diagenetic cements and hydrocarbon reservoir quality." Clay Minerals 35, no. 1 (2000): 313–22. http://dx.doi.org/10.1180/000985500546684.

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AbstractThe stable isotopic compositions of diagenetic minerals can provide valuable constraints on the sources, precipitation temperatures and relative timing of cements in reservoir rocks. This type of information is essential when trying to understand and predict the distribution of cements in the subsurface, and their impact on reservoir quality. Conventional isotope methods contribute to answers to many diagenetic problems, but where core or time are scarce, or where good mineral separation is unobtainable, laser-based stable isotope methods offer several advantages. These include the abi

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Osipowicz, Grzegorz, Andrzej Bokiniec, Krzysztof Kurzyk, et al. "The Late Neolithic sepulchral and ritual place of site 14 in Kowal (Kuyavia, Central Poland)." Praehistorische Zeitschrift 89, no. 2 (2014): 261–79. http://dx.doi.org/10.1515/pz-2014-0018.

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Zusammenfassung: Forschungsgegenstand dieses Artikels ist ein Begräbnis- und Ritualplatz der Kugelamphoren-Kultur der Fundstätte 14 in Kowal (Zentral-Polen). Die Stätte umfasst einen Submegalithen sowie einen Ritualplatz mit Tiergräbern und einer menschlichen Bestattung. Der Komplex kann auf die Zeit zwischen 3250/3100 und 2400/2150 v. Chr. datiert werden. Analysen haben gezeigt, dass der Platz über eine lange Zeit benutzt wurde, und dass die durchgeführten Rituale sehr komplex waren. Beweise wurden gefunden, dass an einigen Stellen rituelle Handlungen ohne Unterbrechung über viele Jahre durch

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Dittmann, Anna, Elisabeth Schlosser, Valérie Masson-Delmotte, et al. "Precipitation regime and stable isotopes at Dome Fuji, East Antarctica." Atmospheric Chemistry and Physics 16, no. 11 (2016): 6883–900. http://dx.doi.org/10.5194/acp-16-6883-2016.

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Abstract. A unique set of 1-year precipitation and stable water isotope measurements from the Japanese Antarctic station, Dome Fuji, has been used to study the impact of the synoptic situation and the precipitation origin on the isotopic composition of precipitation on the Antarctic Plateau. The Antarctic Mesoscale Prediction System (AMPS) archive data are used to analyse the synoptic situations that cause precipitation. These situations are investigated and divided into five categories. The most common weather situation during a precipitation event is an upper-level ridge that extends onto th

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Bode, Antonio, and Maria Teresa Alvarez-Ossorio. "Taxonomic versus trophic structure of mesozooplankton: a seasonal study of species succession and stable carbon and nitrogen isotopes in a coastal upwelling ecosystem." ICES Journal of Marine Science 61, no. 4 (2004): 563–71. http://dx.doi.org/10.1016/j.icesjms.2004.03.004.

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Abstract Seasonal variations in mesozooplankton (>200 μm) stable carbon and nitrogen isotope abundances were compared with the seasonal species succession pattern off A Coruña (Galicia, NW Spain). Mesozooplankton biomass, numerical abundance, species composition, and natural abundance of stable isotopes, along with water column temperature, salinity, chlorophyll a and dissolved nitrate concentrations, were studied in monthly samples during the years 2000 and 2001 at a coastal station (80-m depth). Biomass and abundance of mesozooplankton followed the annual cycle with maxima in spring and s

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van der Wel, L. G., V. Gkinis, V. A. Pohjola, and H. A. J. Meijer. "Snow isotope diffusion rates measured in a laboratory experiment." Journal of Glaciology 57, no. 201 (2011): 30–38. http://dx.doi.org/10.3189/002214311795306727.

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AbstractThe diffusion of stable water isotopes in snow was measured in two controlled laboratory experiments. Two batches of snow of different isotopic composition were stacked alternately with varying layer thicknesses. The stack was stored in a freezer room at constant temperature for several months, and sampled at regular intervals to analyse the diffusion. Measured isotope profiles were fitted to a theoretical model with diffusion length as the fit parameter. In the first experiment, we observed a difference in diffusion rates between layers of different thicknesses, which is likely caused

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Gallart, Francesc, Sebastián González-Fuentes, and Pilar Llorens. "Technical note: Isotopic fractionation of evaporating waters: effect of sub-daily atmospheric variations and eventual depletion of heavy isotopes." Hydrology and Earth System Sciences 28, no. 1 (2024): 229–39. http://dx.doi.org/10.5194/hess-28-229-2024.

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Abstract. Isotopic fractionation of evaporating waters has been studied constantly in recent decades, particularly because it enables calculation of both the volume of water evaporated from a water body and the isotopic composition of its source water. We studied the stable water isotopic composition of an artificial pan filled with water and subject to total evaporation in a sub-humid environment, in order to put into practice an operational method for estimating the time since disconnection of riverine pools when these are sampled for the quality of aquatic life. Results indicate that (i) wh

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Painter, M. L., C. L. Chambers, M. Siders, R. R. Doucett, Jr. J. O. Whitaker, and D. L. Phillips. "Diet of spotted bats (Euderma maculatum) in Arizona as indicated by fecal analysis and stable isotopes." Canadian Journal of Zoology 87, no. 10 (2009): 865–75. https://doi.org/10.5281/zenodo.13437543.

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(Uploaded by Plazi for the Bat Literature Project) We assessed diet of spotted bats (Euderma maculatum (J.A. Allen, 1891)) by visual analysis of bat feces and stable carbon (d13C) and nitrogen (d15N) isotope analysis of bat feces, wing, hair, and insect prey. We collected 33 fecal samples from spotted bats and trapped 3755 insects where bats foraged. Lepidopterans averaged 99.6% of feces by volume; other insects were not a major component of diet. The d13C and d15N values of bat feces were similar to those of moths from families Noctuidae (N), Lasiocampidae (L), and Geometridae (G), but differ

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Painter, M. L., C. L. Chambers, M. Siders, R. R. Doucett, Jr. J. O. Whitaker, and D. L. Phillips. "Diet of spotted bats (Euderma maculatum) in Arizona as indicated by fecal analysis and stable isotopes." Canadian Journal of Zoology 87, no. 10 (2009): 865–75. https://doi.org/10.5281/zenodo.13437543.

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(Uploaded by Plazi for the Bat Literature Project) We assessed diet of spotted bats (Euderma maculatum (J.A. Allen, 1891)) by visual analysis of bat feces and stable carbon (d13C) and nitrogen (d15N) isotope analysis of bat feces, wing, hair, and insect prey. We collected 33 fecal samples from spotted bats and trapped 3755 insects where bats foraged. Lepidopterans averaged 99.6% of feces by volume; other insects were not a major component of diet. The d13C and d15N values of bat feces were similar to those of moths from families Noctuidae (N), Lasiocampidae (L), and Geometridae (G), but differ

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15

Painter, M. L., C. L. Chambers, M. Siders, R. R. Doucett, Jr. J. O. Whitaker, and D. L. Phillips. "Diet of spotted bats (Euderma maculatum) in Arizona as indicated by fecal analysis and stable isotopes." Canadian Journal of Zoology 87, no. 10 (2009): 865–75. https://doi.org/10.5281/zenodo.13437543.

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(Uploaded by Plazi for the Bat Literature Project) We assessed diet of spotted bats (Euderma maculatum (J.A. Allen, 1891)) by visual analysis of bat feces and stable carbon (d13C) and nitrogen (d15N) isotope analysis of bat feces, wing, hair, and insect prey. We collected 33 fecal samples from spotted bats and trapped 3755 insects where bats foraged. Lepidopterans averaged 99.6% of feces by volume; other insects were not a major component of diet. The d13C and d15N values of bat feces were similar to those of moths from families Noctuidae (N), Lasiocampidae (L), and Geometridae (G), but differ

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16

Painter, M. L., C. L. Chambers, M. Siders, R. R. Doucett, Jr. J. O. Whitaker, and D. L. Phillips. "Diet of spotted bats (Euderma maculatum) in Arizona as indicated by fecal analysis and stable isotopes." Canadian Journal of Zoology 87, no. 10 (2009): 865–75. https://doi.org/10.5281/zenodo.13437543.

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(Uploaded by Plazi for the Bat Literature Project) We assessed diet of spotted bats (Euderma maculatum (J.A. Allen, 1891)) by visual analysis of bat feces and stable carbon (d13C) and nitrogen (d15N) isotope analysis of bat feces, wing, hair, and insect prey. We collected 33 fecal samples from spotted bats and trapped 3755 insects where bats foraged. Lepidopterans averaged 99.6% of feces by volume; other insects were not a major component of diet. The d13C and d15N values of bat feces were similar to those of moths from families Noctuidae (N), Lasiocampidae (L), and Geometridae (G), but differ

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17

Painter, M. L., C. L. Chambers, M. Siders, R. R. Doucett, Jr. J. O. Whitaker, and D. L. Phillips. "Diet of spotted bats (Euderma maculatum) in Arizona as indicated by fecal analysis and stable isotopes." Canadian Journal of Zoology 87, no. 10 (2009): 865–75. https://doi.org/10.5281/zenodo.13437543.

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(Uploaded by Plazi for the Bat Literature Project) We assessed diet of spotted bats (Euderma maculatum (J.A. Allen, 1891)) by visual analysis of bat feces and stable carbon (d13C) and nitrogen (d15N) isotope analysis of bat feces, wing, hair, and insect prey. We collected 33 fecal samples from spotted bats and trapped 3755 insects where bats foraged. Lepidopterans averaged 99.6% of feces by volume; other insects were not a major component of diet. The d13C and d15N values of bat feces were similar to those of moths from families Noctuidae (N), Lasiocampidae (L), and Geometridae (G), but differ

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18

GAVÉRIAUX, Fanny, Laurent BOUBY, Philippe MARINVAL, et al. "L'alimentation des premières sociétés agropastorales du Sud de la France : premières données isotopiques sur des graines et fruits carbonisés néolithiques et essais de modélisation." Comptes Rendus Palevol 21, no. 19 (2022): 391–410. https://doi.org/10.5852/cr-palevol2022v21a19.

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L’analyse isotopique (δ<sup>13</sup>C et δ<sup>15</sup>N) d’ossements humains a permis de franchir un pas décisif dans la connaissance de l’alimentation des sociétés du Néolithique. Cependant, les données isotopiques des ressources végétales cultivées ou sauvages n’étaient, jusqu’à présent, pas intégrées dans la reconstitution du régime alimentaire des groupes humains. Cette étude propose d’explorer les variations isotopiques enregistré

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Meisehen, T., F. Bühler, R. Koppmann, and M. Krebsbach. "An analytical system for the measurement of stable hydrogen isotopes in ambient volatile organic compounds." Atmospheric Measurement Techniques 8, no. 10 (2015): 4475–86. http://dx.doi.org/10.5194/amt-8-4475-2015.

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Abstract. Stable isotope measurements in atmospheric volatile organic compounds (VOCs) are an excellent tool to analyse chemical and dynamical processes in the atmosphere. While up to now isotope studies of VOCs in ambient air have mainly focussed on carbon isotopes, we herein present a new measurement system to investigate hydrogen isotope ratios in atmospheric VOCs. This system, consisting of a gas chromatography pyrolysis isotope ratio mass spectrometer (GC-P-IRMS) and a pre-concentration system, was thoroughly characterised using a VOC test mixture. A precision of better than 9 ‰ (in δ 2H)

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Meisehen, T., F. Bühler, R. Koppmann, and M. Krebsbach. "An analytical system for the measurement of stable hydrogen isotopes in ambient volatile organic compounds." Atmospheric Measurement Techniques Discussions 8, no. 7 (2015): 7093–125. http://dx.doi.org/10.5194/amtd-8-7093-2015.

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Abstract. Stable isotope measurements in atmospheric volatile organic compounds (VOC) are an excellent tool to analyse chemical and dynamical processes in the atmosphere. While up to now isotope studies of VOC in ambient air mainly focus on carbon isotopes, we herein present a new measurement system to investigate hydrogen isotope ratios in atmospheric VOC. This system consisting of a GC-P-IRMS (Gas Chromatography Pyrolysis Isotope Ratio Mass Spectrometer) and a preconcentration system was thoroughly characterised using a working standard. A precision of better than 9 ‰ (in δD) is achieved for

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Liénart, Camilla, Andrius Garbaras, Susanne Qvarfordt, Jakob Walve, and Agnes M. L. Karlson. "Spatio-temporal variation in stable isotope and elemental composition of key-species reflect environmental changes in the Baltic Sea." Biogeochemistry 157, no. 2 (2021): 149–70. http://dx.doi.org/10.1007/s10533-021-00865-w.

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AbstractCarbon and nitrogen stable isotope ratios are increasingly used to study long-term change in food web structure and nutrient cycling. We retrospectively analyse elemental composition (C, N and P) and stable isotopes (δ13C, δ15N) in archived monitoring samples of two important taxa from the bottom of the food web; the filamentous ephemeral macroalgae Cladophora spp. and the blue mussel Mytilus edulis trossulus from three contrasting regions in the Baltic Sea (coastal Bothnian Sea and Baltic Proper, open sea central Baltic). The aim is to statistically link the observed spatial and inter

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Melody, Carol, Bryan Griffiths, Jens Dyckmans та Olaf Schmidt. "Stable isotope analysis (δ13C andδ15N) of soil nematodes from four feeding groups". PeerJ 4 (1 вересня 2016): e2372. http://dx.doi.org/10.7717/peerj.2372.

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Soil nematode feeding groups are a long-established trophic categorisation largely based on morphology and are used in ecological indices to monitor and analyse the biological state of soils. Stable isotope ratio analysis (13C/12C and15N/14N, expressed asδ13C andδ15N) has provided verification of, and novel insights into, the feeding ecology of soil animals such as earthworms and mites. However, isotopic studies of soil nematodes have been limited to date as conventional stable isotope ratio analysis needs impractically large numbers of nematodes (up to 1,000) to achieve required minimum sampl

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Benbow, Timothy J., Alan R. Hayman, Robert Van Hale, and Russell Frew. "Preparation of aqueous fatty acids for hydrogen and carbon stable isotope analysis by solid phase extraction." Marine and Freshwater Research 64, no. 4 (2013): 294. http://dx.doi.org/10.1071/mf12192.

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Stable isotope analyses of fatty acids in environmental waters provides important information as to their source(s). Analysis is often confounded due to low concentrations of fatty acids and/or a complex sample matrix requiring separation of the target analyte. The purpose of this study was to validate a method to extract fatty acids from natural waters using solid phase extraction (SPE) before compound specific isotope analysis (CSIA). Three SPE cartridges and multiple eluting solvents were tested to determine the efficiency, isotopic fractionation, and reproducibility of each extraction tech

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Moens, Luc, José De Donder, Paul De Paepe, and Julien Van Hende. "Analyse des isotopes stables du carbone et de l'oxygène appliquée à des marbres de Pessinonte (Anatolie Centrale)." Anatolia Antiqua 6, no. 1 (1998): 267–71. http://dx.doi.org/10.3406/anata.1998.901.

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Du, Kang, Beiying Zhang, and Linjuan Li. "Soil Water Dynamics Under Different Land Uses in Loess Hilly Region in China by Stable Isotopic Tracing." Water 13, no. 2 (2021): 242. http://dx.doi.org/10.3390/w13020242.

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Exploring soil water dynamics under different land use types is important for water resource management and vegetation restoration in the Loess Plateau. In this study, we investigated the hydrogen and oxygen isotopic compositions of soil water from four different land use types to explore the mechanism of soil water movement and transformation and analyse the influence of land use. The results show that the range of stable isotopes (δD and δ18O) in soil water was smaller than that in precipitation. Values for δD and δ18O in soil water showed relatively similar temporal variation, heavy isotope

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Mascart, Thibaud, Gilles Lepoint, and Marleen De Troch. "Meiofauna and harpacticoid copepods in different habitats of a Mediterranean seagrass meadow." Journal of the Marine Biological Association of the United Kingdom 93, no. 6 (2013): 1557–66. http://dx.doi.org/10.1017/s0025315413000222.

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This study investigated whether associated meiobenthic communities, especially harpacticoid copepods, differed amongst habitats. Five pre-defined habitats within and next to the Posidonia oceanica seagrass meadow were sampled: living seagrass canopy leaves (LL), small (SMF) and large (LMF) macrophytodetritus fragment accumulations and sand, bare (BS) and covered (CS). The highest meiofauna abundances were recorded in the BS for the core sampled habitats (BS, CS, SMF and LMF) and in the LMF for seagrass material habitats (SMF, LMF and LL). Harpacticoid copepods were the most abundant taxon in a

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Sedaghatpour, Fatemeh, and Stein B. Jacobsen. "Magnesium stable isotopes support the lunar magma ocean cumulate remelting model for mare basalts." Proceedings of the National Academy of Sciences 116, no. 1 (2018): 73–78. http://dx.doi.org/10.1073/pnas.1811377115.

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We report high-precision Mg isotopic analyses of different types of lunar samples including two pristine Mg-suite rocks (72415 and 76535), basalts, anorthosites, breccias, mineral separates, and lunar meteorites. The Mg isotopic composition of the dunite 72415 (δ25Mg = −0.140 ± 0.010‰, δ26Mg = −0.291 ± 0.018‰), the most Mg-rich and possibly the oldest lunar sample, may provide the best estimate of the Mg isotopic composition of the bulk silicate Moon (BSM). This δ26Mg value of the Moon is similar to those of the Earth and chondrites and reflects both the relative homogeneity of Mg isotopes in

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Mantile, Noemi, Simona Altieri, Maria di Cicco, Valentina Giacometti, and Carmine Lubritto. "Advanced Isotopic Techniques to Investigate Cultural Heritage: The Research Activities at the iCONa Laboratory." Heritage 8, no. 8 (2025): 296. https://doi.org/10.3390/heritage8080296.

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Isotopic analyses are useful tools with a wide range of applications, including environmental studies, archaeology and biomedicine. Founded in 2019 at the University of Campania “Luigi Vanvitelli”, the iCONa laboratory specialises in stable isotope mass spectrometry, with a particular focus on cultural heritage. The laboratory performs carbon, nitrogen and oxygen isotopic analyses, including the most recent advances in compound-specific stable isotope analysis of amino acids (CSIA-AAs). In addition to these analytical services, iCONa provides chemical and physical sample preparation for a vari

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NAVARRETE, Vanessa, João Luís CARDOSO, Cristina Barrocas DIAS, et al. "Estratégias alimentares dos animais domésticos do povoado de Leceia (Oeiras, Portugal) durante a transição do IV para o III milénio a.C.: uma abordagem a partir dos isótopos estáveis." Estudos Arqueológicos de Oeiras 34 (July 30, 2024): 233‑248. https://doi.org/10.5281/zenodo.12732048.

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<strong><em>Feeding strategies of domestic animals from the settlement of Leceia (Oeiras, Portugal) during the transition from the 4th to the 3rd millennium BC: stable isotope approach.</em></strong> In this article, we analyse faunal samples from the Late Neolithic (Layer 4) and Early Chalcolithic (Layer 3) levels of the fortified settlement of Leceia (Oeiras, Portugal) in order to understand the management of the feeding of domestic animals recovered in these excavations.  Through the analyses of stable isotopes of δ<sup>13</sup>C and δ<sup>15</sup>N in bone collagen, we aim

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Lesser, Michael P., Marc Slattery, and Keir J. Macartney. "Using Stable Isotope Analyses to Assess the Trophic Ecology of Scleractinian Corals." Oceans 3, no. 4 (2022): 527–45. http://dx.doi.org/10.3390/oceans3040035.

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Studies on the trophic ecology of scleractinian corals often include stable isotope analyses of tissue and symbiont carbon and nitrogen. These approaches have provided critical insights into the trophic sources and sinks that are essential to understanding larger-scale carbon and nitrogen budgets on coral reefs. While stable isotopes have identified most shallow water (<30 m) corals as mixotrophic, with variable dependencies on autotrophic versus heterotrophic resources, corals in the mesophotic zone (~30–150 m) transition to heterotrophy with increasing depth because of decreased photosynt

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Popa-Lisseanu, Ana G., Stephanie Kramer-Schadt, Juan Quetglas, et al. "Seasonal Variation in Stable Carbon and Nitrogen Isotope Values of Bats Reflect Environmental Baselines." PLOS ONE 10, no. 2 (2015): e0117052. https://doi.org/10.5281/zenodo.13435561.

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(Uploaded by Plazi for the Bat Literature Project) The stable carbon and nitrogen isotope composition of animal tissues is commonly used to trace wildlife diets and analyze food chains. Changes in an animal's isotopic values over time are generally assumed to indicate diet shifts or, less frequently, physiological changes. Although plant isotopic values are known to correlate with climatic seasonality, only a few studies restricted to aquatic environments have investigated whether temporal isotopic varia-tion in consumers may also reflect environmental baselines through trophic propagation. We

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Popa-Lisseanu, Ana G., Stephanie Kramer-Schadt, Juan Quetglas, et al. "Seasonal Variation in Stable Carbon and Nitrogen Isotope Values of Bats Reflect Environmental Baselines." PLOS ONE 10, no. 2 (2015): e0117052. https://doi.org/10.5281/zenodo.13435561.

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(Uploaded by Plazi for the Bat Literature Project) The stable carbon and nitrogen isotope composition of animal tissues is commonly used to trace wildlife diets and analyze food chains. Changes in an animal's isotopic values over time are generally assumed to indicate diet shifts or, less frequently, physiological changes. Although plant isotopic values are known to correlate with climatic seasonality, only a few studies restricted to aquatic environments have investigated whether temporal isotopic varia-tion in consumers may also reflect environmental baselines through trophic propagation. We

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Popa-Lisseanu, Ana G., Stephanie Kramer-Schadt, Juan Quetglas, et al. "Seasonal Variation in Stable Carbon and Nitrogen Isotope Values of Bats Reflect Environmental Baselines." PLOS ONE 10, no. 2 (2015): e0117052. https://doi.org/10.5281/zenodo.13435561.

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Abstract:

(Uploaded by Plazi for the Bat Literature Project) The stable carbon and nitrogen isotope composition of animal tissues is commonly used to trace wildlife diets and analyze food chains. Changes in an animal's isotopic values over time are generally assumed to indicate diet shifts or, less frequently, physiological changes. Although plant isotopic values are known to correlate with climatic seasonality, only a few studies restricted to aquatic environments have investigated whether temporal isotopic varia-tion in consumers may also reflect environmental baselines through trophic propagation. We

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Popa-Lisseanu, Ana G., Stephanie Kramer-Schadt, Juan Quetglas, et al. "Seasonal Variation in Stable Carbon and Nitrogen Isotope Values of Bats Reflect Environmental Baselines." PLOS ONE 10, no. 2 (2015): e0117052. https://doi.org/10.5281/zenodo.13435561.

Full text

Abstract:

(Uploaded by Plazi for the Bat Literature Project) The stable carbon and nitrogen isotope composition of animal tissues is commonly used to trace wildlife diets and analyze food chains. Changes in an animal's isotopic values over time are generally assumed to indicate diet shifts or, less frequently, physiological changes. Although plant isotopic values are known to correlate with climatic seasonality, only a few studies restricted to aquatic environments have investigated whether temporal isotopic varia-tion in consumers may also reflect environmental baselines through trophic propagation. We

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35

Popa-Lisseanu, Ana G., Stephanie Kramer-Schadt, Juan Quetglas, et al. "Seasonal Variation in Stable Carbon and Nitrogen Isotope Values of Bats Reflect Environmental Baselines." PLOS ONE 10, no. 2 (2015): e0117052. https://doi.org/10.5281/zenodo.13435561.

Full text

Abstract:

(Uploaded by Plazi for the Bat Literature Project) The stable carbon and nitrogen isotope composition of animal tissues is commonly used to trace wildlife diets and analyze food chains. Changes in an animal's isotopic values over time are generally assumed to indicate diet shifts or, less frequently, physiological changes. Although plant isotopic values are known to correlate with climatic seasonality, only a few studies restricted to aquatic environments have investigated whether temporal isotopic varia-tion in consumers may also reflect environmental baselines through trophic propagation. We

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Leitner, Simon, Wendelin Feichtinger, Stefan Mayer, et al. "UAV-based sampling systems to analyse greenhouse gases and volatile organic compounds encompassing compound-specific stable isotope analysis." Atmospheric Measurement Techniques 16, no. 2 (2023): 513–27. http://dx.doi.org/10.5194/amt-16-513-2023.

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Abstract. The study herein reports on the development and testing of sampling systems (and subsequent analytical setups) that were deployed on an unmanned aerial vehicle (UAV) for the purpose of analysing greenhouse gases (GHGs) and volatile organic compounds (VOCs) in the lower atmospheric boundary layer. Two sampling devices, both of which can be mounted to an UAV with a payload capability greater than 1 kg, were tested for respective sampling and analysis of specific GHGs (carbon dioxide, CO2, and methane, CH4) and VOCs (chlorinated ethenes, CEs). The gas analyses included measurements of t

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Zitek, A., J. Irrgeher, M. Cervicek, et al. "Individual-specific transgenerational marking of common carp Cyprinus carpio, L., using 86Sr/84Sr double spikes." Marine and Freshwater Research 65, no. 11 (2014): 978. http://dx.doi.org/10.1071/mf13235.

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Transgenerational isotopic marking has been recognised as an efficient tool for mass marking of high numbers of fish larvae by injecting female spawners with enriched isotope solutions. So far, mainly enriched stable barium isotopes have been applied for this purpose. Here, we present an alternative approach for individual-specific transgenerational marking using strontium 86Sr/84Sr double spikes. Four isotonic double-spike solutions with different molar fractions of 86Sr and 84Sr and different total Sr concentrations were administered to four female spawners of common carp, Cyprinus carpio, L

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Sehrawat, Jagmahender Singh, and Jaspreet Kaur. "Role of stable isotope analyses in reconstructing past life-histories and the provenancing human skeletal remains: a review." Anthropological Review 80, no. 3 (2017): 243–58. http://dx.doi.org/10.1515/anre-2017-0017.

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AbstractThis article reviews the present scenario of use of stable isotopes (mainly δ13C, δ15N, δ18O,87Sr) to trace past life behaviours like breast feeding and weaning practices, the geographic origin, migration history, paleodiet and subsistence patterns of past populations from the chemical signatures of isotopes imprinted in human skeletal remains. This approach is based on the state that food-web isotopic signatures are seen in the human bones and teeth and such signatures can change parallely with a variety of biogeochemical processes. By measuring δ13C and δ15N isotopic values of subadu

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Uriarte, Amaya, Alberto García, Aurelio Ortega, Fernando De la Gándara, José Quintanilla, and Raúl Laiz-Carrión. "Isotopic discrimination factors and nitrogen turnover rates in reared Atlantic bluefin tuna larvae (Thunnus thynnus): effects of maternal transmission." Scientia Marina 80, no. 4 (2016): 447. http://dx.doi.org/10.3989/scimar.04435.25a.

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The use of stable isotope analysis to study animal diets requires estimates of isotopic turnover rates (half time, t50) and discrimination factors (Δ) for an accurate interpretation of trophic patterns. The stable isotopes of carbon and nitrogen were analysed for eggs and reared larvae of Thunnus thynnus, as well as for the different diets supplied during the experiment. The results showed high values of δ15N in eggs and larvae (n=646) until 4 DAH. After this time lapse, the stable isotope values declined progressively until 12 DAH, when notochord flexion began. The δ13C showed an inverse tren

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Alqahtani, Ali, Kate Heesom, Jonathan L. Bramson, David Curiel, Hideyo Ugai, and David A. Matthews. "Analysis of purified Wild type and mutant adenovirus particles by SILAC based quantitative proteomics." Journal of General Virology 95, no. 11 (2014): 2504–11. http://dx.doi.org/10.1099/vir.0.068221-0.

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We used SILAC (stable isotope labelling of amino acids in cell culture) and high-throughput quantitative MS mass spectrometry to analyse the protein composition of highly purified WT wild type adenoviruses, mutant adenoviruses lacking an internal protein component (protein V) and recombinant adenoviruses of the type commonly used in gene therapy, including one virus that had been used in a clinical trial. We found that the viral protein abundance and composition were consistent across all types of virus examined except for the virus lacking protein V, which also had reduced amounts of another

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Behrmann-Godel, J., and E. Yohannes. "Multiple isotope analyses of the pike tapeworm Triaenophorus nodulosus reveal peculiarities in consumer–diet discrimination patterns." Journal of Helminthology 89, no. 2 (2014): 238–43. http://dx.doi.org/10.1017/s0022149x13000849.

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AbstractPrevious studies of dietary isotope discrimination have led to the general expectation that a consumer will exhibit enriched stable isotope levels relative to its diet. Parasite–host systems are specific consumer–diet pairs in which the consumer (parasite) feeds exclusively on one dietary source: host tissue. However, the small numbers of studies previously carried out on isotopic discrimination in parasite–host (ΔXP-HT) systems have yielded controversial results, showing some parasites to be isotopically depleted relative to their food source, while others are enriched or in equilibri

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Ubelaker, Douglas H., and Douglas W. Owsley. "Isotopic Evidence for Diet in the Seventeenth-Century Colonial Chesapeake." American Antiquity 68, no. 1 (2003): 129–39. http://dx.doi.org/10.2307/3557036.

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Excavations of colonial period sites in Maryland and Virginia have produced human remains dating to the seventeenth century. In this study, we analyze stable isotopes of carbon and nitrogen from these remains to explore aspects of the diets of the individuals represented. Analyses of both stable carbon and nitrogen isotopes were conducted on preserved protein while stable carbon isotope analysis was also conducted on preserved biological apatite. Carbon isotope values (δ13N‰) ranged from -10.5 to -20.5 for collagen and -5.1 to -12.5 for bioapatite. Nitrogen isotope values (δ15N‰) ranged from 9

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Šmalcelj Novaković, Pia, Vlasta Vyroubal, and Mario Carić. "Preliminary Results of Stable Isotope Analysis on Bone Collagen Samples from the Avar-Age Cemetery Privlaka-Gole Njive." Interdisciplinaria Archaeologica Natural Sciences in Archaeology XIV, no. 2 (2023): 153–66. http://dx.doi.org/10.24916/iansa.2023.2.1.

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The material culture of the Avar era is considered to be one of the best documented Early Medieval material cultures of central Europe. The nomadic Avar community settled in the Carpathian basin at the end of the 6th century and remained as rulers until the Frankish wars at the end of the 8th century. Unlike the neighbouring communities, there is no evidence of the Avars being Christianised, and their relatively conservative burial customs, in which great importance is attached to the costumes of the deceased, have enabled archaeologists not only to create a precise typological-chronological f

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Wagner, D. S., C. J. Markworth, C. D. Wagner, et al. "Ratio encoding combinatorial libraries with stable isotopes and their utility in pharmaceutical research." Combinatorial Chemistry & High Throughput Screening 1, no. 3 (1998): 143–53. http://dx.doi.org/10.2174/138620730103220120142733.

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Combinatorial libraries are an important tool for lead discovery in the pharmaceutical industry. Advances in high throughput screening coupled with combinatorial chemistry can significantly reduce the time to find lead compounds. A major difficulty in developing large combinatorial libraries is the ability to identify active compounds. This paper describes a rapid and sensitive encoding/decoding methodology that utilizes stable isotopes and mass spectrometry. The ability of mass spectrometry to precisely determine the intensity of isotopic abundances provides a unique encoding strategy employi

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Ebert, Claire E., Asta J. Rand, Kirsten Green-Mink, et al. "Sulfur isotopes as a proxy for human diet and mobility from the preclassic through colonial periods in the Eastern Maya lowlands." PLOS ONE 16, no. 8 (2021): e0254992. http://dx.doi.org/10.1371/journal.pone.0254992.

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Maya archaeologists have long been interested in understanding ancient diets because they provide information about broad-scale economic and societal transformations. Though paleodietary studies have primarily relied on stable carbon (δ13C) and nitrogen (δ15N) isotopic analyses of human bone collagen to document the types of food people consumed, stable sulfur (δ34S) isotope analysis can potentially provide valuable data to identify terrestrial, freshwater, or marine/coastal food sources, as well as determine human mobility and migration patterns. Here we assess applications of δ34S for invest

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Horwath, Aline B., Jessica Royles, Richard Tito, et al. "Bryophyte stable isotope composition, diversity and biomass define tropical montane cloud forest extent." Proceedings of the Royal Society B: Biological Sciences 286, no. 1895 (2019): 20182284. http://dx.doi.org/10.1098/rspb.2018.2284.

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Liverworts and mosses are a major component of the epiphyte flora of tropical montane forest ecosystems. Canopy access was used to analyse the distribution and vertical stratification of bryophyte epiphytes within tree crowns at nine forest sites across a 3400 m elevational gradient in Peru, from the Amazonian basin to the high Andes. The stable isotope compositions of bryophyte organic material ( 13 C/ 12 C and 18 O/ 16 O) are associated with surface water diffusive limitations and, along with C/N content, provide a generic index for the extent of cloud immersion. From lowland to cloud forest

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Böhlke, J. K. "Variation in the terrestrial isotopic composition and atomic weight of argon (IUPAC Technical Report)." Pure and Applied Chemistry 86, no. 9 (2014): 1421–32. http://dx.doi.org/10.1515/pac-2013-0918.

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AbstractThe isotopic composition and atomic weight of argon (Ar) are variable in terrestrial materials. Those variations are a source of uncertainty in the assignment of standard properties for Ar, but they provide useful information in many areas of science. Variations in the stable isotopic composition and atomic weight of Ar are caused by several different processes, including (1) isotope production from other elements by radioactive decay (radiogenic isotopes) or other nuclear transformations (e.g., nucleogenic isotopes), and (2) isotopic fractionation by physical-chemical processes such a

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Gagnon, Chantal, and Keith A. Hobson. "Using stable isotopes to track frugivory in migratory passerines." Canadian Journal of Zoology 87, no. 11 (2009): 981–92. http://dx.doi.org/10.1139/z09-086.

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Several species of North American migratory songbirds undergo seasonal diet shifts from insects to fruits, but this phenomenon is poorly quantified. Measurement of naturally occurring stable isotopes of carbon (δ13C) and nitrogen (δ15N) are linked to sources of diets and trophic level, respectively. We used stable carbon (δ13C) and nitrogen (δ15N) isotope analyses of blood and claw tissues of 16 species of migratory songbirds to evaluate the timing and extent of frugivory over different periods. Species differed considerably in their tissue δ15N values, but we found poor isotopic segregation o

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Cullen, T. M., F. J. Longstaffe, U. G. Wortmann, M. B. Goodwin, L. Huang, and D. C. Evans. "Stable isotopic characterization of a coastal floodplain forest community: a case study for isotopic reconstruction of Mesozoic vertebrate assemblages." Royal Society Open Science 6, no. 2 (2019): 181210. http://dx.doi.org/10.1098/rsos.181210.

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Stable isotopes are powerful tools for elucidating ecological trends in extant vertebrate communities, though their application to Mesozoic ecosystems is complicated by a lack of extant isotope data from comparable environments/ecosystems (e.g. coastal floodplain forest environments, lacking significant C 4 plant components). We sampled 20 taxa across a broad phylogenetic, body size, and physiological scope from the Atchafalaya River Basin of Louisiana as an environmental analogue to the Late Cretaceous coastal floodplains of North America. Samples were analysed for stable carbon, oxygen and n

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Kelleway, J. J., S. M. Trevathan-Tackett, J. Baldock, and L. P. Critchley. "Plant litter composition and stable isotope signatures vary during decomposition in blue carbon ecosystems." Biogeochemistry 158, no. 2 (2022): 147–65. http://dx.doi.org/10.1007/s10533-022-00890-3.

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AbstractThe ratio of isotopes of carbon (13C:12C or δ13C) and nitrogen (15N:14N or δ15N) are common indicators of the flow and storage of organic matter in coastal wetland research. Effective use of these indicators requires quantification and understanding of: (1) the variability of isotope signatures of potential organic matter source materials; and (2) the influence of organic matter decomposition on isotopic signatures. While it is well-established that organic matter characteristics change during the decomposition process, there has been little direct quantification of any concurrent shif

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