15 results
Search Results
2. Paleoenvironmental Changes for the Last 3000 Cal Years BP in the Pueyrredón Lake Basin, Southern Patagonia, Argentina.
- Author
-
Marcos, Maria A., Bamonte, Florencia P., Echeverria, Marcos E., Sottile, Gonzalo D., and Mancini, Maria V.
- Subjects
WATERSHEDS ,WESTERLIES ,VEGETATION dynamics ,TUNDRAS ,PLANT communities ,PALEOECOLOGY - Abstract
Patagonian shrub and ecotonal communities were sensitive to past environmental changes and thus may also be affected by future ones. Therefore, their paleoecological study constitutes a valuable tool to understand the way in which these plant communities respond to the forcings responsible for environmental variability. The aim of this paper is to reconstruct the vegetation dynamics of the Pueyrredón Lake area (47°25′55′′ S; 72°0.7′7′′ W) for the last 3000 cal yr BP and to contextualize these changes in a regional paleoclimatic framework. The results indicate that at the beginning of the 2900 cal yr BP, the vegetation in the northwest of Santa Cruz, Argentinian Patagonia, was represented by a grass-shrub steppe associated with forest–shrub steppe ecotonal elements. This information correlates with the larger-scale environmental inferences described for the period, which indicate an increase in moisture availability due to the weakening of the westerly winds. A marked change to arid conditions is indicated in the last 1050 cal yr BP, with the establishment and development of different shrub steppe communities and the lack of ecotonal elements. Although vegetation was sensitive to changes in moisture conditions related to the variability of the westerly winds, there is evidence of differences in the composition of shrub vegetation regarding the sequences analyzed. Variations in pollen proportions of the shrub steppes in the Pueyrredón Lake area suggest that changes in vegetation are not only due to climate variability but also local factors in the areas where shrub communities grow. The integration of the information with other Patagonian sequences allowed to frame these changes in a regional context. The results obtained provide useful information to understand the way vegetation changed in the past and the manner in which it may respond to future changes. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
3. Climate changes, human peopling and regional differentiation during late Holocene in Patagonia.
- Author
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Goñi, Rafael, Re, Anahí, García Guraieb, Solana, Cassiodoro, Gisela, Tessone, Augusto, Rindel, Diego, Dellepiane, Juan, Flores Coni, Josefina, Guichón, Francisco, and Agnolin, Agustín
- Subjects
- *
RESIDENTIAL mobility , *CLIMATE change , *POPULATION differentiation , *ZOOARCHAEOLOGY , *DROUGHTS - Abstract
Abstract The main aim of this paper is to evaluate if certain processes that were documented in a specific area of Central-Southern Patagonia during the Late Holocene were also registered in a broader spatial scale. Previous investigations carried out in our study area located in Central-Western Santa Cruz province, Patagonia, have stated that climatic fluctuations during the Late Holocene (last 2500 years) were the cause of a reduction of hunter-gatherers' residential mobility. The new climatic conditions were characterized by important environmental droughts, which increased during the Mediaeval Climatic Anomaly, circa 900 years BP. This reduction in mobility resulted in concentrations of populations in low altitude basins and increased logistical and seasonal mobility, defined as a process of extensification. In this paper we take a broad spatial perspective to evaluate to what extent the low residential mobility identified in our research area had a correlation in a larger regional scale. Also we assess if this lead to a regional differentiation among hunter-gatherer populations, previous to European contact (450 years BP). In order to achieve these aims, we undertake a coarse grain analysis, using available data published on the composition and distribution of the archaeological record for Central-Southern Patagonia, an area of about 450.000 km2. Specifically, we consider evidence about technology, zooarchaeology, rock art, mortuary record and paleodietary studies. The analysis indicates that a reduced residential mobility could have occurred in certain areas of the study region, linked to the aforementioned climatic changes. On the issue of regional differentiation, the archaeological record highlights the complexity of this process. There are a variety of arguments both for and against the idea of a process of regionalization in Central-Southern Patagonia in the Late Holocene. We propose a process of differentiation of populations with low residential mobility which nonetheless remained connected through the circulation of goods, information and people. [ABSTRACT FROM AUTHOR]
- Published
- 2019
- Full Text
- View/download PDF
4. Stable isotope ecology and human palaeodiet in the northern coast of Santa Cruz (Argentine Patagonia).
- Author
-
Zilio, L., Tessone, A., and Hammond, H.
- Subjects
- *
STABLE isotopes , *POPULATION , *MARINE resources , *HINTERLAND , *HOLOCENE Epoch - Abstract
Abstract: The aim of this paper is to provide information on the analysis of stable isotopes obtained from bones of marine and terrestrial fauna used as potential food by hunter‐gatherers on the northern coast of Santa Cruz province (Argentine Patagonia). The results from the isotopic ecology are analysed to contribute to dietary interpretations of the human populations who lived in this area. The mean of terrestrial resources is −19.1‰ ± 1.8‰ and 9.2‰ ± 2.6‰ for δ13C and δ15N, respectively. Meanwhile, marine resources recorded a mean of δ13C −12.5‰ ± 1.2‰ and δ15N of 19.4‰ ± 2.4‰. The analysed human samples come from different types of burials dated mainly in the Late Holocene. The δ13C and δ15N isotopic values on human remains suggest the existence of different diets during the Late Holocene, including people who consumed mainly marine, terrestrial, and mixed proteins, with a range between −18‰ to −10.4‰ and 12.4‰ to 23.4‰ for δ13C and δ15N, respectively. Some of these isotopic values, which indicate marine diets, are the highest recorded for Patagonia. The influence of the marine spray on the terrestrial trophic chains is suggested for the Patagonian Atlantic coast, evidenced by higher values in the δ15N of guanacos from the coast in relation to others studied from the hinterland. [ABSTRACT FROM AUTHOR]
- Published
- 2018
- Full Text
- View/download PDF
5. Logistical mobility in plateaus in Central-Western Santa Cruz, Argentina. An approach from technological, archaeofaunal and anthracological evidence.
- Author
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Pasqualini, Sebastián, Cassiodoro, Gisela, and Dellepiane, Juan Matías
- Subjects
- *
PLATEAUS , *MOBILITY (Structural dynamics) , *HUNTER-gatherer societies , *DESERT ecology , *ARCHAEOLOGICAL research - Abstract
The aim of this paper is to discuss hunter–gatherers' logistical mobility strategies in Central-Western Santa Cruz province during the last 2500 years BP, in a context of human adaptations to semi-desert conditions. The approach to the archaeological record is focused on integrating three independent lines of evidence: technology, zooarchaeological and anthracological analysis. Logistical mobility will be addressed focusing on two main aspects: resources transportation and variability of archaeological contexts. The observed variability has allowed shedding light on the use of the category “logistical” used to describe plateaus. Additionally, these areas show a well-planned and scheduled use during a regional process of desiccation. [ABSTRACT FROM AUTHOR]
- Published
- 2016
- Full Text
- View/download PDF
6. Paleodemography of Late Holocene hunter-gatherers from Patagonia (Santa Cruz, Argentina): An approach using multiple archaeological and bioarchaeological indicators.
- Author
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García Guraieb, Solana, Goñi, Rafael, and Tessone, Augusto
- Subjects
- *
PALEODEMOGRAPHY , *HOLOCENE Epoch , *HUNTER-gatherer societies , *ARCHAEOLOGY - Abstract
This paper summarizes and discusses the main results achieved over three decades of research on paleodemographic aspects of Late Holocene hunter-gatherers in Northwestern Santa Cruz (Argentina). Research has been guided by a model of regional settlement that proposes that, as a result of the progressive aridization process recorded in Patagonia during the Late Holocene, human groups would have reduced their residential mobility and concentrated their settlements in low altitude basins with water availability, such as Lake Cardiel and Lake Salitroso. Paleodemographic questions derived from the model relate to population regional continuity and dynamics and were tested using several lines of research at regional and local scales. The assessment of the chronological information and temporal trends of the archaeological record at the regional level allowed for a coarse grain paleodemographic approach, and acted as a mean to support hypotheses related to changes in mobility and land use strategies. Building on this, several lines of bioarchaeological evidence were used to address paleodemographic aspects of the model, including temporal, distributional, and compositional studies of the mortuary record, isotopic, morphometric and DNA analyses and the sex and age structure of the skeletal samples recovered in Lake Salitroso basin. Results point to a biological and cultural population continuity in the region during the Late Holocene. Also, a reduction in residential mobility would have favored a slight population growth of Lake Salitroso populations during the last millennium. [ABSTRACT FROM AUTHOR]
- Published
- 2015
- Full Text
- View/download PDF
7. Paleoenvironmental Changes for the Last 3000 Cal Years BP in the Pueyrredón Lake Basin, Southern Patagonia, Argentina
- Author
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Maria A. Marcos, Florencia P. Bamonte, Marcos E. Echeverria, Gonzalo D. Sottile, and Maria V. Mancini
- Subjects
Patagonia ,late Holocene ,pollen ,paleoenvironmental changes ,Human evolution ,GN281-289 ,Stratigraphy ,QE640-699 - Abstract
Patagonian shrub and ecotonal communities were sensitive to past environmental changes and thus may also be affected by future ones. Therefore, their paleoecological study constitutes a valuable tool to understand the way in which these plant communities respond to the forcings responsible for environmental variability. The aim of this paper is to reconstruct the vegetation dynamics of the Pueyrredón Lake area (47°25′55′′ S; 72°0.7′7′′ W) for the last 3000 cal yr BP and to contextualize these changes in a regional paleoclimatic framework. The results indicate that at the beginning of the 2900 cal yr BP, the vegetation in the northwest of Santa Cruz, Argentinian Patagonia, was represented by a grass-shrub steppe associated with forest–shrub steppe ecotonal elements. This information correlates with the larger-scale environmental inferences described for the period, which indicate an increase in moisture availability due to the weakening of the westerly winds. A marked change to arid conditions is indicated in the last 1050 cal yr BP, with the establishment and development of different shrub steppe communities and the lack of ecotonal elements. Although vegetation was sensitive to changes in moisture conditions related to the variability of the westerly winds, there is evidence of differences in the composition of shrub vegetation regarding the sequences analyzed. Variations in pollen proportions of the shrub steppes in the Pueyrredón Lake area suggest that changes in vegetation are not only due to climate variability but also local factors in the areas where shrub communities grow. The integration of the information with other Patagonian sequences allowed to frame these changes in a regional context. The results obtained provide useful information to understand the way vegetation changed in the past and the manner in which it may respond to future changes.
- Published
- 2022
- Full Text
- View/download PDF
8. Between Foragers and Farmers: Climate Change and Human Strategies in Northwestern Patagonia
- Author
-
Adolfo F. Gil, Ricardo Villalba, Fernando R. Franchetti, Clara Otaola, Cinthia C. Abbona, Eva A. Peralta, and Gustavo Neme
- Subjects
farming border ,Patagonia ,Southern Annular Mode ,late Holocene ,human diet ,zooarchaeology ,Human evolution ,GN281-289 ,Stratigraphy ,QE640-699 - Abstract
In this paper we explore how changes in human strategies are differentially modulated by climate in a border area between hunter-gatherers and farmers. We analyze multiple proxies: radiocarbon summed probability distributions (SPDs), stable C and N isotopes, and zooarchaeological data from northwestern Patagonia. Based on these proxies, we discuss aspects of human population, subsistence, and dietary dynamics in relation to long-term climatic trends marked by variation in the Southern Annular Mode (SAM). Our results indicate that the farming frontier in northwestern Patagonia was dynamic in both time and space. We show how changes in temperature and precipitation over the last 1000 years cal BP have influenced the use of domestic plants and the hunting of highest-ranked wild animals, whereas no significant changes in human population size occurred. During the SAM positive phase between 900 and 550 years cal BP, warmer and drier summers are associated with an increase in C4 resource consumption (maize). After 550 years cal BP, when the SAM changes to the negative phase, wetter and cooler summer conditions are related to a change in diet focused on wild resources, especially meat. Over the past 1000 years, there was a non-significant change in the population based on the SPD.
- Published
- 2020
- Full Text
- View/download PDF
9. Osteometric Analysis of South American Sea Lions ( Otaria flavescens) Pups From Patagonia. An Assessment of Their Use as Indicators for Seasonality in Archaeological Sites.
- Author
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Borella, F., L'heureux, G. L., and Grandi, M. F.
- Subjects
SEA lions ,OSTEOMETRY ,SEASONAL temperature variations ,ZOOARCHAEOLOGY ,ARCHAEOLOGICAL excavations ,MAMMAL age determination - Abstract
Zooarchaeological analyses of pinniped remains have been scarce in South America because of lack of specific studies of species determination and estimation of age and sex. Nonetheless, the presence of small and unfused bones (assigned as pup remains) of Otaria flavescens ( O. flavescens) in the Patagonian archaeological record has been frequently used as an indicator of summer occupation accomplished by ecological analogues. For this reason, we carried out a postcranial skeletons osteometric study of modern pups of South American sea lions ( O. flavescens) with known sex and aged 0-12 months, allowing a more precise age estimation of archaeological samples. Then, we revisited the evidence for seasonality in the Cabo Virgenes 6 site at Cabo Virgenes locality, one of the archaeological localities in Patagonia where the seasonality has been determined only on the basis of the presence of unfused pup bones. Our metric data study on a modern sample shows that the regression analyses generated a complementary and dependable age estimation model for unfused appendicular bones of O. flavescens between 0 and 12 months old that can be applied to samples recovered from archaeological sites. These osteometric studies of postcranial elements allow us to adjust the age estimation of the animal's death and re-examine seasonality of the Cabo Virgenes 6 site (Santa Cruz, Argentina). Copyright © 2014 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]
- Published
- 2016
- Full Text
- View/download PDF
10. Late Holocene climate variability on the eastern flank of the Patagonian Andes (Chile): A δ18O record from mollusks in Lago Cisnes (47°S).
- Author
-
Álvarez, Denisse, Fagel, Nathalie, Araneda, Alberto, Jana-Pinninghoff, Patricia, Keppens, Edward, and Urrutia, Roberto
- Subjects
STABLE isotopes ,MOLLUSKS ,HYDROLOGIC cycle ,NANNOFOSSILS ,ECOLOGICAL niche - Abstract
Stable isotopes in mollusk shells have been widely used for hydrological balance reconstructions. However, their use is restricted to lakes that preserve the calcareous material of the shells. Lago Cisnes is located in Patagonia (47°S) and shows a continuous record of three species of mollusk during the past 5000 years. The isotopic records of δ
18 O in Pisidium sp., Lymnaea sp., and Biomphalaria sp. show discrepancies among them, which can be explained by the differential effect that evaporation has on the habitat where each species lives. Between 1800 and 500 cal. yr BP, the three species show similar isotopic variations, suggesting that climatic condition affecting in the same way the different microhabitats in the lake. Around 1700 cal. yr BP, an enrichment of18 O on mollusks shells indicates drier conditions that prevails until 1100 cal. yr BP. Later on, isotopic signal tends to decrease, suggesting a humid period between 750 and 500 cal. yr BP. Such humid conditions lasted until 170 cal. yr BP, which were evidenced only by Biomphalaria sp. and Pisidium sp. Climate variability during the late Holocene in Lago Cisnes is in agreement with marine records from northern Patagonia, which would suggest westerlies weakening during a northward migration after 1100 cal. yr BP and/or an important temperature control on the evaporation, where low temperatures could decrease the evaporation driven by the westerlies. Additional records in this area would be requested to clarify the westerlies effects on the east flank of the Andes. [ABSTRACT FROM AUTHOR]- Published
- 2015
- Full Text
- View/download PDF
11. Between Foragers and Farmers: Climate Change and Human Strategies in Northwestern Patagonia
- Author
-
Clara Otaola, Fernando Franchetti, Eva Ailén Peralta, Gustavo Neme, Adolfo Gil, Cinthia Carolina Abbona, and Ricardo Villalba
- Subjects
LOW-LEVEL FOOD PRODUCTION ,010506 paleontology ,Population ,ZOOARCHAEOLOGY ,Climate change ,stable isotopes ,lcsh:GN281-289 ,human diet ,01 natural sciences ,law.invention ,lcsh:Stratigraphy ,law ,zooarchaeology ,Earth and Planetary Sciences (miscellaneous) ,Patagonia ,FARMING BORDER ,LATE HOLOCENE ,0601 history and archaeology ,Precipitation ,Radiocarbon dating ,education ,Zooarchaeology ,lcsh:QE640-699 ,0105 earth and related environmental sciences ,Earth-Surface Processes ,purl.org/becyt/ford/6 [https] ,education.field_of_study ,STABLE ISOTOPES ,060102 archaeology ,Ecology ,business.industry ,SOUTHERN ANNULAR MODE ,Population size ,farming spread ,low-level food production ,Subsistence agriculture ,Southern Annular Mode ,06 humanities and the arts ,farming border ,late Holocene ,PATAGONIA ,FARMING SPREAD ,Geography ,Agriculture ,HUMAN DIET ,lcsh:Human evolution ,purl.org/becyt/ford/6.1 [https] ,business - Abstract
In this paper we explore how changes in human strategies are differentially modulated by climate in a border area between hunter-gatherers and farmers. We analyze multiple proxies: radiocarbon summed probability distributions (SPDs), stable C and N isotopes, and zooarchaeological data from northwestern Patagonia. Based on these proxies, we discuss aspects of human population, subsistence, and dietary dynamics in relation to long-term climatic trends marked by variation in the Southern Annular Mode (SAM). Our results indicate that the farming frontier in northwestern Patagonia was dynamic in both time and space. We show how changes in temperature and precipitation over the last 1000 years cal BP have influenced the use of domestic plants and the hunting of highest-ranked wild animals, whereas no significant changes in human population size occurred. During the SAM positive phase between 900 and 550 years cal BP, warmer and drier summers are associated with an increase in C4 resource consumption (maize). After 550 years cal BP, when the SAM changes to the negative phase, wetter and cooler summer conditions are related to a change in diet focused on wild resources, especially meat. Over the past 1000 years, there was a non-significant change in the population based on the SPD. Fil: Gil, Adolfo Fabian. Universidad Tecnologica Nacional. Facultad Reg.san Rafael. Instituto de Evolucion, Ecologia Historica y Ambiente. - Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Mendoza. Instituto de Evolucion, Ecologia Historica y Ambiente.; Argentina. Universidad Nacional de Cuyo; Argentina Fil: Villalba, Ricardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina Fil: Franchetti, Fernando Ricardo. Universidad Tecnologica Nacional. Facultad Reg.san Rafael. Instituto de Evolucion, Ecologia Historica y Ambiente. - Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Mendoza. Instituto de Evolucion, Ecologia Historica y Ambiente.; Argentina Fil: Otaola, Clara. Universidad Tecnologica Nacional. Facultad Reg.san Rafael. Instituto de Evolucion, Ecologia Historica y Ambiente. - Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Mendoza. Instituto de Evolucion, Ecologia Historica y Ambiente.; Argentina. Universidad Nacional de Cuyo. Facultad de Filosofía y Letras; Argentina Fil: Abbona, Cinthia Carolina. Universidad Tecnologica Nacional. Facultad Reg.san Rafael. Instituto de Evolucion, Ecologia Historica y Ambiente. - Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Mendoza. Instituto de Evolucion, Ecologia Historica y Ambiente.; Argentina Fil: Peralta, Eva Ailén. Universidad Tecnologica Nacional. Facultad Reg.san Rafael. Instituto de Evolucion, Ecologia Historica y Ambiente. - Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Mendoza. Instituto de Evolucion, Ecologia Historica y Ambiente.; Argentina Fil: Neme, Gustavo Adolfo. Universidad Tecnologica Nacional. Facultad Reg.san Rafael. Instituto de Evolucion, Ecologia Historica y Ambiente. - Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Mendoza. Instituto de Evolucion, Ecologia Historica y Ambiente.; Argentina
- Published
- 2020
- Full Text
- View/download PDF
12. Glaciar León, Chilean Patagonia:late-Holocene chronology and geomorphology.
- Author
-
Harrison, Stephan, Glasser, Neil, Winchester, Vanessa, Haresign, Eleanor, Warren, Charles, Duller, Geoff A. T., Bailey, Richard, Ivy-Ochs, Susan, Jansson, Krister, and Kubik, Peter
- Subjects
GLACIAL landforms ,METEOROLOGICAL precipitation ,PLEISTOCENE stratigraphic geology ,ICE caps ,LUMINESCENCE spectroscopy ,SEDIMENTOLOGY ,GEOMORPHOLOGY ,CLIMATOLOGY ,SCIENTIFIC method - Abstract
Glaciar León is a temperate, grounded outlet of the eastern North Patagonian Icefield (NPI). It terminates at an active calving margin in Lago Leones, a 10 km long proglacial lake. We take a multidisciplinary approach to its description and use ASTER imagery and clast sedimentology to describe the geomorphology of the glacier and its associated moraines. We date periods of glacier retreat over the last 2500 years using a combination of lichenometric, dendrochronological, cosmogenic and optically stimulated luminescence techniques and show that the glacier receded from a large terminal moraine complex some 2500 years ago and underwent further significant recession from nineteenth-century moraine limits. The moraine dates indicate varying retreat rates, in conjunction with significant downwasting. The bathymetry of Lago Leones is characterized by distinct ridges interpreted as moraine ridges that dissect the lake into several basins, with water depths reaching 360 m. The fluctuations of Glaciar León appear to have been controlled by the interplay between climatic forcing and calving dynamics. [ABSTRACT FROM AUTHOR]
- Published
- 2008
- Full Text
- View/download PDF
13. Stable isotope ecology and human palaeodiet in the northern coast of Santa Cruz (Argentine Patagonia)
- Author
-
Augusto Tessone, Leandro Zilio, and Heidi Hammond
- Subjects
MARINE SPRAY ,010506 paleontology ,Archeology ,Historia y Arqueología ,060102 archaeology ,Stable isotope ratio ,Ecology ,MARINE AND TERRESTRIAL PROTEINS ,Ecology (disciplines) ,CARBON AND NITROGEN ISOTOPES ,06 humanities and the arts ,01 natural sciences ,Arqueología ,HUNTER-GATHERERS ,PATAGONIA ,HUMANIDADES ,Geography ,ISOTOPIC ECOLOGY ,Anthropology ,0601 history and archaeology ,LATE HOLOCENE ,0105 earth and related environmental sciences - Abstract
The aim of this paper is to provide information on the analysis of stable isotopes obtained from bones of marine and terrestrial fauna used as potential food by hunter-gatherers on the northern coast of Santa Cruz province (Argentine Patagonia). The results from the isotopic ecology are analysed to contribute to dietary interpretations of the human populations who lived in this area. The mean of terrestrial resources is −19.1‰ ± 1.8‰ and 9.2‰ ± 2.6‰ for δ13C and δ15N, respectively. Meanwhile, marine resources recorded a mean of δ13C −12.5‰ ± 1.2‰ and δ15N of 19.4‰ ± 2.4‰. The analysed human samples come from different types of burials dated mainly in the Late Holocene. The δ13C and δ15N isotopic values on human remains suggest the existence of different diets during the Late Holocene, including people who consumed mainly marine, terrestrial, and mixed proteins, with a range between −18‰ to −10.4‰ and 12.4‰ to 23.4‰ for δ13C and δ15N, respectively. Some of these isotopic values, which indicate marine diets, are the highest recorded for Patagonia. The influence of the marine spray on the terrestrial trophic chains is suggested for the Patagonian Atlantic coast, evidenced by higher values in the δ15N of guanacos from the coast in relation to others studied from the hinterland. Fil: Zilio, Leandro. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Arqueología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Tessone, Augusto. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geocronología y Geología Isotópica. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geocronología y Geología Isotópica; Argentina Fil: Hammond, Heidi. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Arqueología; Argentina
- Published
- 2018
14. Vegetation changes and human occupation in the Patagonian steppe, Argentina, during the late Holocene
- Author
-
De Porras, Maria Eugenia, Mancini, Maria Virginia, and Prieto, Aldo Raul
- Published
- 2009
- Full Text
- View/download PDF
15. Paleodemography of Late Holocene hunter-gatherers from Patagonia (Santa Cruz, Argentina): An approach using multiple archaeological and bioarchaeological indicators
- Author
-
Augusto Tessone, Solana García Guraieb, and Rafael Goñi
- Subjects
education.field_of_study ,Historia y Arqueología ,Land use ,Population ,Archaeological record ,Structural basin ,Archaeology ,Arqueología ,HUNTER-GATHERERS ,PATAGONIA ,HUMANIDADES ,Paleodemography ,Human settlement ,Population growth ,LATE HOLOCENE ,PALEODEMOGRAPHY ,education ,Geology ,Holocene ,Earth-Surface Processes - Abstract
This paper summarizes and discusses the main results achieved over three decades of research on paleodemographic aspects of Late Holocene hunter-gatherers in Northwestern Santa Cruz (Argentina). Research has been guided by a model of regional settlement that proposes that, as a result of the progressive aridization process recorded in Patagonia during the Late Holocene, human groups would have reduced their residential mobility and concentrated their settlements in low altitude basins with water availability, such as Lake Cardiel and Lake Salitroso. Paleodemographic questions derived from the model relate to population regional continuity and dynamics and were tested using several lines of research at regional and local scales. The assessment of the chronological information and temporal trends of the archaeological record at the regional level allowed for a coarse grain paleodemographic approach, and acted as a mean to support hypotheses related to changes in mobility and land use strategies. Building on this, several lines of bioarchaeological evidence were used to address paleodemographic aspects of the model, including temporal, distributional, and compositional studies of the mortuary record, isotopic, morphometric and DNA analyses and the sex and age structure of the skeletal samples recovered in Lake Salitroso basin. Results point to a biological and cultural population continuity in the region during the Late Holocene. Also, a reduction in residential mobility would have favored a slight population growth of Lake Salitroso populations during the last millennium. Fil: Garcia Guraieb, Solana. Secretaría de Cultura de la Nación. Dirección Nacional de Cultura y Museos. Instituto Nacional de Antropología y Pensamiento Latinoamericano; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Goñi, Rafael Agustín. Secretaría de Cultura de la Nación. Dirección Nacional de Cultura y Museos. Instituto Nacional de Antropología y Pensamiento Latinoamericano; Argentina. Universidad de Buenos Aires; Argentina Fil: Tessone, Augusto. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geocronología y Geología Isotopica. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geocronología y Geología Isotopica; Argentina
- Published
- 2015
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