scholarly journals ON IMPACT OF THE BONE TYPE ON THE RESULTS OF PALEODIET RECONSTRUCTIONS ON THE BASIS OF THE STABLE ISOTOPE ANALYSIS

2021 ◽  
pp. 188-198
Author(s):  
М. А. Самородова
Keyword(s):  
Stable Isotope ◽  
Isotope Composition ◽  
Isotope Analysis ◽  
Isotope Ratios ◽  
Stable Isotope Composition ◽  
Different Types ◽  
Archaeological Materials ◽  
Isotope Study ◽  
Isotope Studies ◽  
Stable Isotope Study

Анализ стабильных изотопов азота и углерода активно применяется в палеодиетических реконструкциях археологического материала. Однако на результаты изотопного исследования могут повлиять существующие отличия в соотношениях изотопов разных типов костей одного индивида, которые могут возникать из-за разницы в скорости ремоделирования (разрушение старой кости и образование новой) различных костей скелета. Данные отличия часто не учитываются при выборе образцов для проведения изотопного исследования. Таким образом, перед настоящей статьей ставятся следующие задачи. Во-первых, показать существование разницы в изотопных соотношениях костей скелета на основе материалов, представленных древнерусским сельским населением из могильника Шекшово 9 в Суздальском Ополье (X-XII вв.). И, во-вторых, предоставить основные рекомендации при отборе проб для изучения изотопного состава археологических материалов. В ходе исследования удалось установить, что при выборе образцов для проведения изотопного анализа следует отдавать предпочтения костям со схожей скоростью ремоделирования. The analysis of stable nitrogen and carbon isotopes is actively used in paleodiet reconstructions of archaeological materials. However, the results of the stable isotope study can be affected by differences in the isotope ratios of collagen in different types of bones of the same individual. This can arise due the different speed of remodeling (the process by which osteoclasts breakdown the tissue in bones and new bones form) of various bones in the skeleton. These differences are often disregarded when selecting samples for isotope studies. Therefore, this paper is intended to address the following tasks: (i) to show that there exists difference in the isotope ratios of the skeleton bones by analyzing human remnants of the Medieval Russia rural population from the Shekshovo-9 cemetery in Suzdal Opolye (10th-12th centuries); (ii) to provide basic recommendations for selecting samples for the studies of the stable isotope composition of archaeological materials. Our research evidences that. when selecting samples for the isotope analysis. preference should be given to the bones with similar remodeling speed.

scholarly journals Spatio-temporal stable isotope variation of a benthic primary consumer in a simple food web in a strongly acidic lake

PeerJ ◽  
2019 ◽  
Vol 7 ◽  
pp. e7890 ◽  
Author(s):  
Hideyuki Doi ◽  
Eisuke Kikuchi ◽  
Shigeto Takagi ◽  
Shuichi Shikano
Keyword(s):  
Stable Isotope ◽  
Temporal Variation ◽  
Food Web ◽  
Isotope Composition ◽  
Isotope Ratios ◽  
Stable Isotope Composition ◽  
Nitrogen Stable Isotope ◽  
Chironomid Larvae ◽  
Carbon And Nitrogen ◽  
Spatio Temporal

Analysis of aquatic food webs is typically undertaken using carbon and nitrogen stable isotope composition of consumer and producer species. However, the trophic consequences of spatio-temporal variation in the isotope composition of consumers have not been well evaluated. Lake Katanuma, Japan, is highly acidic and has only one dominant species of benthic alga and one planktonic microalga, making it a prime system for studying trophic relationships between primary consumers and producers. In this simple lake food web, we conducted a field survey to evaluate spatial and temporal variation in the carbon and nitrogen stable isotope composition of a chironomid larvae in association with a single benthic and planktonic alga. We found a significant correlation between carbon stable isotope ratios of the chironomid larvae and the benthic diatom species in the lake. Thus, chironomid larvae may represent a reliable isotopic baseline for estimating isotope values in benthic diatoms. However, although the correlation held in shallow water, at four m depths, there was no significant relationship between the isotope ratios of chironomids and benthic diatoms, probably because deep-water larvae spend part of their life cycle migrating from the lake shore to deeper water. The differing isotope ratios of deeper chironomid tissues likely reflect the feeding history of individuals during this migration.

An Oxygen Isotope Study of Seasonal Trends in Jinxiuchuan River of Jinan South Mountain

2014 ◽  
Vol 522-524 ◽  
pp. 954-957 ◽  
Author(s):  
Yong Sen Wang ◽  
Zheng He Xu ◽  
Si Fang Dong
Keyword(s):  
Stable Isotope ◽  
Oxygen Isotope ◽  
River Water ◽  
Oxygen Isotopes ◽  
Water Cycle ◽  
Climatic Factors ◽  
Isotope Composition ◽  
Stable Isotope Composition ◽  
Isotope Study ◽  
Isotopic Variations

The stable isotope composition of river water contains some information of water cycle and climatic factors, such as precipitation, evaporation and temperature. Oxygen isotopes in river water were monitored at one site in Jinxiuchuang basin of Jinan southern mountain.δ18O values of river water show a variation from-7.82 on July 6 to-9.98 on June 6. The result reveals that the river water was mainly supplied by the precipitation. The isotopic variations at Jinxiuchuan river have strong precipitation patterns owning to different rainfall in summer.

Precise isotope analysis of tellurium by inductively coupled plasma mass spectrometry using a double spike method

2018 ◽  
Vol 33 (7) ◽  
pp. 1233-1242 ◽  
Author(s):  
Yusuke Fukami ◽  
Jun-Ichi Kimura ◽  
Katsuhiko Suzuki
Keyword(s):  
Mass Spectrometry ◽  
Stable Isotope ◽  
Inductively Coupled Plasma ◽  
Isotope Composition ◽  
Isotope Analysis ◽  
Stable Isotope Composition ◽  
Inductively Coupled ◽  
Analytical Protocol ◽  
Plasma Mass Spectrometry ◽  
Sample Aliquot

We present an analytical protocol to determine the Te/Se ratio and stable isotope composition of Te from a single sample aliquot.

Coastal niches for terrestrial predators: a stable isotope study

2010 ◽  
Vol 88 (11) ◽  
pp. 1077-1085 ◽  
Author(s):  
Kajsa Mellbrand ◽  
Peter A. Hambäck
Keyword(s):  
Stable Isotope ◽  
Baltic Sea ◽  
Isotope Analysis ◽  
Carbon And Nitrogen ◽  
Hunting Behaviour ◽  
Arthropod Predators ◽  
Marine Subsidies ◽  
Isotope Study ◽  
Marine Algal ◽  
Stable Isotope Study

The purpose of this study was to identify the use of marine versus terrestrial food items by terrestrial arthropod predators on Baltic Sea shores. The inflow of marine nutrients in the area consists mainly of marine algal detritus and emerging aquatic insects (e.g., chironomids). Diets of coastal arthropods were examined using carbon and nitrogen stable isotope analysis in a two source mixing model. The results suggest that spiders are the terrestrial predators mainly utilizing nutrients and energy of marine origin on Baltic Sea shores, whereas insect predators such as beetles and heteropterans mainly utilize nutrients and energy derived from terrestrial sources, possibly owing to differences in hunting behaviour. That spiders are the predators which benefit the most from the marine inflow suggest that eventual effects of marine subsidies for the coastal ecosystem as a whole are likely mediated by spiders.

scholarly journals Isotope Analysis (13C, 18O) of Wine From Central and Eastern Europe and Argentina, 2008 and 2009 Vintages: Differentiation of Origin, Environmental Indications, and Variations Within Countries

2021 ◽  
Vol 5 ◽  
Author(s):  
Micha Horacek ◽  
Nives Ogrinc ◽  
Dana Alina Magdas ◽  
Daniel Wunderlin ◽  
Sanja Sucur ◽  
...  
Keyword(s):  
Stable Isotope ◽  
Eastern Europe ◽  
Central And Eastern Europe ◽  
Adriatic Sea ◽  
Isotope Composition ◽  
Isotope Analysis ◽  
Eastern European ◽  
Stable Isotope Composition ◽  
Weather Situation ◽  
Similarities And Differences

In this study, we compare the stable isotope composition of oxygen and carbon of wines from four Central and Southeastern European countries and from Argentina to study the similarities and differences in the isotope signatures and, thus, the potential of differentiation of the various wine-growing countries. We observe similar trends for wines from Austria, Slovenia, and Romania with respect to the vintages 2008 and 2009, which are absent in the Montenegrin and Argentinean samples. It is speculated that the weather develops similarly for Austria, Slovenia, and Romania, as these countries are positioned at a similar latitude and not too far away from each other (general central and eastern European weather situation), whereas Montenegro is not influenced by the latter being situated farther south and dominantly influenced by the Adriatic Sea. Investigations on further vintages are needed to test this assumption.

scholarly journals Using stable isotopes of water to infer wetland hydrological dynamics

2004 ◽  
Vol 8 (6) ◽  
pp. 1164-1173 ◽  
Author(s):  
A. Clay ◽  
C. Bradley ◽  
A. J. Gerrard ◽  
M. J. Leng
Keyword(s):  
Stable Isotope ◽  
Isotope Composition ◽  
Water Source ◽  
Isotope Ratios ◽  
Stable Isotope Composition ◽  
Oxygen And Hydrogen Isotopes ◽  
Precipitation Water ◽  
Hydrogen Isotope Ratios ◽  
Stable Isotopes Of Water ◽  
End Members

Abstract. This paper considers the potential of oxygen and hydrogen isotope ratios to identify spatial and temporal changes in the water source of a lowland headwater wetland situated adjacent to the River Tern in Shropshire, UK. Stable isotope composition (d18O) of end-members varied between –7.5 and –8.0‰ for groundwater, –7.3 and –8.5‰ for river-water and –4.5 and –8.0‰ for precipitation. Water samples were extracted from six nests each comprising three porous cup samplers at depths of 0.2 m, 0.5 m and 1.0 m between June 2000 and October 2001, and their isotope compositions determined. Groundwater appears to be the main source of water to the wetland, but stable isotope ratios enable seasonal variations in the contribution of precipitation to be determined, and indicate the extent of precipitation storage within the wetland. Keywords: oxygen and hydrogen isotopes, water source, hydrodynamics, lowland wetland

scholarly journals Interactive effects of urea and lipid content confound stable isotope analysis in elasmobranch fishes

2017 ◽  
Vol 74 (3) ◽  
pp. 419-428 ◽  
Author(s):  
Aaron B. Carlisle ◽  
Steven Y. Litvin ◽  
Daniel J. Madigan ◽  
Kady Lyons ◽  
Jennifer S. Bigman ◽  
...  
Keyword(s):  
Stable Isotope ◽  
Stable Isotope Analysis ◽  
Lipid Content ◽  
Isotope Composition ◽  
North Pacific Ocean ◽  
Lipid Extraction ◽  
Isotope Analysis ◽  
Interactive Effects ◽  
Stable Isotope Composition ◽  
Elasmobranch Fishes

Stable isotope analysis (SIA) is becoming a commonly used tool to study the ecology of elasmobranchs. However, the retention of urea by elasmobranchs for osmoregulatory purposes may bias the analysis and interpretation of SIA data. We examined the effects of removing urea and lipid on the stable isotope composition of 14 species of sharks, skates, and rays from the eastern North Pacific Ocean. While effects were variable across taxa, removal of urea generally increased δ15N and C:N. Urea removal had less influence on δ13C, whereas extracting urea and lipid generally increased δ15N, C:N, and δ13C. Because C:N values of nonextracted tissues are often used to infer lipid content and adjust δ13C, shifts in C:N following urea extraction will change the inferred lipid content and bias any mathematical adjustment of δ13C. These results highlight the importance of urea and lipid extraction and demonstrate the confounding effects of these compounds, making it impossible to use C:N of non-urea-extracted samples as a diagnostic tool to estimate and correct for lipid content in elasmobranch tissues.

A STABLE ISOTOPE STUDY OF THE DIETS OF UTAH VALLEY UNIVERSITY COMMUNITY MEMBERS

2018 ◽  
Author(s):  
Nicholas D. Udy ◽  
◽  
Serena Smith ◽  
McKenzie M. Ranney ◽  
Michael Andrews ◽  
...  
Keyword(s):  
Stable Isotope ◽  
Community Members ◽  
Isotope Study ◽  
Stable Isotope Study ◽  
University Community
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