نتایج جستجو برای: paleodietary
تعداد نتایج: 35 فیلتر نتایج به سال:
Parchment is one of the most abundant resources in archives across world and a unique time-sensitive material through which centuries livestock economies, trade craft can be explored. We examine impact structural chemical modifications during production to δ13C δ15N values skin, particularly removal cutaneous keratins lipids conversion amide functional groups into carboxyl via alkaline hydrolys...
Population genomic studies of ancient human remains have shown how modern-day European population structure has been shaped by a number of prehistoric migrations. The Neolithization of Europe has been associated with large-scale migrations from Anatolia, which was followed by migrations of herders from the Pontic steppe at the onset of the Bronze Age. Southwestern Europe was one of the last par...
Bone Chemistry and Paleodiet: Reconstructing Prehistoric Subsistence-Settlement Systems in Australia
This article reviews the results of bone collagen stable carbon and nitrogen isotope paleodietary studies conducted in Australia. Stable isotopic analyses of prehistoric human and faunal bones and teeth provide a means to assess past Aboriginal dietary patterns and habitat use, palaeoclimate, and palaeoecology. In some cases, the relative consumption of marine versus terrestrial foods or use of...
Trace element analysis of fossil bone and enamel constitutes a useful tool to characterize the paleoecological behavior of mammals. Up to now, most trace element studies have focused on Plio-Pleistocene fossils. Here, we show that paleodietary inferences based on trace element analyses can be also obtained from ~14Ma old Miocene mammals, in a period of time when important paleoclimatic changes ...
The thickness of dental enamel is often discussed in paleoanthropological literature, particularly with regard to differences in growth, health, and diet between Neandertals and modern humans. Paleoanthropologists employ enamel thickness in paleodietary and taxonomic studies regarding earlier hominins, but variation in enamel thickness within the genus Homo has not been thoroughly explored desp...
Microwear, the quantification of microscopic scratches and pits on the occlusal surfaces of tooth enamel, is commonly used as a paleodietary proxy. For ungulates (hoofed mammals), scratch-dominant microwear distinguishes modern grazers from browsers, presumably as a result of abrasion from grass phytoliths (biogenic silica). However, it is also likely that exogenous grit (i.e. soil, dust) is a ...
The development of isotopic baselines for comparison with paleodietary data is crucial, but often overlooked. We review the factors affecting the carbon (δ(13)C) and nitrogen (δ(15)N) isotopic compositions of plants, with a special focus on the carbon and nitrogen isotopic compositions of twelve different species of cultivated plants (n = 91) and 139 wild plant species collected in northern Per...
Positioned near the top of the food web, the dietary composition of Antarctic penguins and seals can be an excellent indicator of the regional food web and thus the status of the marine ecosystem. The dietary composition of modern penguins and seals has been well investigated; a long-term time series of data on penguin and seal diets, however, are rare. Such data, especially any predating the i...
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