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      Estudios de procedencia (submareal/intermareal) de mejillones (mytilus platensis) en la localidad arqueológica faro San Matías (Golfo San Matías, Río Negro, Argentina) Translated title: Provenance studies (subtidal / intertidal) of mussels (mytilus platensis) in faro San Matías archaeological locality (San Matías Gulf, Río Negro, Argentina)

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          Abstract

          Resumen: Los mitílidos son uno de los recursos marinos más utilizados en el pasado y muy frecuentes de hallar en el registro arqueomalacológico de zonas costeras. En la costa atlántica norpatagónica el mejillón común Mytilus platensis está presente tanto como vestigio arqueológico de su consumo pasado como en poblaciones vivientes en aguas someras. El objetivo de este trabajo es explorar una metodología tendiente a reconocer zonas de colecta de este recurso malacológico en el pasado e inferir modos de aprovisionamiento del mismo. El enfoque metodológico se respalda en el análisis conjunto de las relaciones alométricas de valvas enteras provenientes de diez concheros de la localidad arqueológica Faro San Matías (Río Negro) y las actuales colectadas en zonas litorales del intermareal y submareal del golfo San Matías. Las valvas de la zona submareal registran un patrón de crecimiento alométrico diferente respecto a las del intermareal y, en consecuencia, es posible discriminar la zona de procedencia de los especímenes. Así, el patrón observado en las valvas actuales (n=216) permite inferir el sector de recolección en las arqueológicas (n=932), a lo que pueden sumarse otros criterios biológicos. Como resultado de este estudio, se ha observado que las valvas de tres sondeos de la localidad Faro San Matías sugieren mezcla de zonas de colecta, intermareal y submareal, mientras que las de otros cuatro sondeos analizados estarían indicando una zona de procedencia submareal. Finalmente, se discuten estos datos a partir de test estadísticos para establecer valores discriminantes entre las valvas y aproximarnos a las estrategias de aprovisionamiento utilizadas durante el Holoceno tardío en este litoral.

          Translated abstract

          Abstract: Mussels are one of the most used marine resources in the past and very frequent in the archaeomalacological record of coastal areas. On the North Patagonian Atlantic coast, the common mussel, Mytilus platensis, is recorded both as an archaeological evidence of its past consumption and as living populations in shallow waters. The objective of this work is to explore a methodology to recognize harvesting areas of this malacological resource in the past and infer modes of exploitation. The methodological approach is supported by the analysis of the allometric relationships of whole valves from ten shell-middens from the archaeological locality Faro San Matías (Río Negro) in comparison with those collected currently in intertidal and subtidal littoral zones of the San Matías Gulf. Shells of the subtidal zone present a different allometric growth pattern with respect to the intertidal ones and, consequently, it is possible to discriminate the zone of provenance of the specimens. Thus, the pattern observed in the current valves (n=216) allows us to infer the collection sector in the archaeological ones (n=932), to which other biological criteria can be added. As a result of this study, it has been observed that the valves of three shell-middens of the locality Faro San Matías suggest mixing of collection areas, intertidal and subtidal, while those of another four shell-middens would indicate a subtidal provenance. Finally, these data are discussed with statistical tests to establish discriminant values among the valves and to approach the procurement strategies used during the Late Holocene in this coast.

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          SHCal13 Southern Hemisphere Calibration, 0–50,000 Years cal BP

          The Southern Hemisphere SHCal04 radiocarbon calibration curve has been updated with the addition of new data sets extending measurements to 2145 cal BP and including the ANSTO Younger Dryas Huon pine data set. Outside the range of measured data, the curve is based upon the ern Hemisphere data sets as presented in IntCal13, with an interhemispheric offset averaging 43 ± 23 yr modeled by an autoregressive process to represent the short-term correlations in the offset.
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            Mechanical Limits to Size in Wave-Swept Organisms

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              Intcal13 and Marine13 Radiocarbon Age Calibration Curves 0-50,000 years cal BP

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                Author and article information

                Journal
                magallania
                Magallania (Punta Arenas)
                Magallania
                Universidad de Magallanes. Instituto de la Patagonia. Centro de Estudios del Hombre Austral (Punta Arenas, , Chile )
                0718-2244
                December 2020
                : 48
                : 2
                : 145-159
                Affiliations
                [1] Olavarría orgnameUniversidad Nacional del Centro de la Provincia de Buenos Aires orgdiv1Facultad de Ciencias Sociales Argentina psteffan@ 123456soc.unicen.edu.ar
                [2] Río Negro orgnameUniversidad Nacional del Comahue Argentina
                Article
                S0718-22442020000200145 S0718-2244(20)04800200145
                0a4a3603-1a33-425c-ac4b-1b67fb792f07

                This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

                History
                : 16 June 2020
                : 29 February 2020
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 40, Pages: 15
                Product

                SciELO Chile

                Categories
                ARTÍCULOS

                Mytilus platensis,zona litoral,estrategias de aprovisionamiento,Holoceno tardío,procurement strategies,Archaeomalacology,arqueomalacología,Late Holocene,littoral zone

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