scholarly journals Radiocarbon AMS Dating of Mesolithic Human Remains from Poland

Radiocarbon ◽  
2019 ◽  
Vol 61 (4) ◽  
pp. 991-1007 ◽  
Author(s):  
Natalia Piotrowska ◽  
Jacek Tomczyk ◽  
Sławomira Pawełczyk ◽  
Łukasz M Stanaszek
Keyword(s):  
Isotope Composition ◽  
Alkali Treatment ◽  
Human Remains ◽  
Stable Isotope Composition ◽  
Preparation Methods ◽  
Carbon And Nitrogen ◽  
New Methods ◽  
Biological Studies ◽  
Ams Dating ◽  
Mesolithic Period

ABSTRACTBiological studies on Mesolithic human remains from the Polish region are a rare subject of scientific research due to the limited number of these relics and their poor state of preservation. From the project titled “Old material with new methods: Using the latest bio-chemical analysis in studies of Mesolithic human remains from the Polish areas,” the radiocarbon (14C) dating of bones using accelerator mass spectrometry (AMS) has been performed. For these experiments, the gelatin was extracted from bones, and its quality evaluated by the C/Nat ratio and the stable isotope composition of both carbon and nitrogen. The 14C results have been obtained for 11 bone samples from 5 sites, and throughout this work the results of two preparation methods are compared. The simple gelatin extraction provided material with unsatisfactory collagen quality indicators, while additional alkali treatment allowed us to obtain much more reliable, and generally older, results. Additionally, analysis on VIRI/SIRI samples were conducted to test the developed method. Only seven of the investigated bone samples yielded ages within Mesolithic period, and the most reliable dates range from 5800 to 6800 cal BC. One sample was not datable, and two were shown to be much younger than expected.

scholarly journals Trophic Relationships and Habitat Preferences of Delphinids from the Southeastern Brazilian Coast Determined by Carbon and Nitrogen Stable Isotope Composition

PLoS ONE ◽  
2013 ◽  
Vol 8 (12) ◽  
pp. e82205 ◽  
Author(s):  
Tatiana Lemos Bisi ◽  
Paulo Renato Dorneles ◽  
José Lailson-Brito ◽  
Gilles Lepoint ◽  
Alexandre de Freitas Azevedo ◽  
...  
Keyword(s):  
Stable Isotope ◽  
Isotope Composition ◽  
Habitat Preferences ◽  
Trophic Relationships ◽  
Brazilian Coast ◽  
Stable Isotope Composition ◽  
Nitrogen Stable Isotope ◽  
Carbon And Nitrogen

Alteration of the carbon and nitrogen stable isotope composition of beef by substitution of grass silage with maize silage

2005 ◽  
Vol 19 (14) ◽  
pp. 1937-1942 ◽  
Author(s):  
Bojlul Bahar ◽  
Frank J. Monahan ◽  
Aidan P. Moloney ◽  
Padraig O'Kiely ◽  
Charlie M. Scrimgeour ◽  
...  
Keyword(s):  
Stable Isotope ◽  
Isotope Composition ◽  
Stable Isotope Composition ◽  
Maize Silage ◽  
Nitrogen Stable Isotope ◽  
Carbon And Nitrogen ◽  
Grass Silage

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 Isotopic Anthropology of Ancient Maya Diets

2018 ◽  
Author(s):  
Christine White
Keyword(s):  
Direct Evidence ◽  
Isotope Composition ◽  
Ancient Maya ◽  
Social Variables ◽  
Stable Isotope Composition ◽  
Spanish Conquest ◽  
Carbon And Nitrogen ◽  
Time Space ◽  
Political Economies ◽  
Status Differentiation

The ancient Maya are known to have relied heavily on maize horticulture. In spite of the fact that maize was responsible for both the ideological and physical survival of the Maya, there was significant variability in the degree to which it was consumed. In this chapter, direct evidence of food consumption provided by the stable isotope composition of carbon and nitrogen is reviewed in terms of variability that existed across time, space, and social variables. Relationships between diet and significant temporal developments such as agricultural intensification, the collapse of Classic Maya society, and the Spanish conquest are examined, along with the use of diet to reconstruct political economies, gender, and status differentiation.

scholarly journals Effects of sex and altitude on nutrient, and carbon and nitrogen stable isotope composition of the endangered shrub Baccharis concinna G.M. Barroso (Asteraceae)

2017 ◽  
Vol 31 (2) ◽  
pp. 229-240
Author(s):  
G. Wilson Fernandes ◽  
Heitor Monteiro Duarte ◽  
Fernando A. O. Silveira ◽  
Fernando Broetto ◽  
Ulrich Lüttge ◽  
...  
Keyword(s):  
Stable Isotope ◽  
Isotope Composition ◽  
Stable Isotope Composition ◽  
Nitrogen Stable Isotope ◽  
Carbon And Nitrogen
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