@phdthesis{10902/25262,
year = {2022},
month = {5},
url = {http://hdl.handle.net/10902/25262},
abstract = {RESUMEN: Este trabajo aborda el estudio del contexto medioambiental del valle del Sado (Portugal) durante las ocupaciones del Mesolítico final (ca. 8400-7000 cal BP; 6450-5050 cal BC). Desde al menos 8850 cal BP, se establecieron condiciones salobres en el sector del valle en el que se localizan los concheros mesolíticos situados más abajo, y fueron predominantes hasta ca. 7040 cal BP. En esta zona se desarrollaron ambientes estuarinos (marismas, llanuras mareales), que llegaron hasta 10-15 km aguas arriba del límite fluvio-estuarino actual, donde se localizan los concheros más alejados de la costa. Estas condiciones ambientales hicieron posible la presencia de moluscos y peces marinos en la proximidad de las áreas de ocupación y su explotación por parte de las Comunidades de cazadores-recolectores del SO ibérico. Las condiciones estuarinas se mantuvieron en el canal principal del Sado hasta el comienzo del Holoceno superior, en torno a 4000 cal BP/2050 cal BC, más allá del abandono de los sitios por los grupos mesolíticos.},
abstract = {ABSTRACT: This work focuses on the environmental context of the Sado valley, Portugal, during the Late Mesolithic occupation (ca. 8400-7000 cal BP; 6450-5050 cal BC). Brackish conditions established in the section of the valley where the most downstream Late Mesolithic shell middens are located, since, at least, 8850 cal BP and prevailed until ca. 7040 cal BP. Estuarine environments, i.e., saltmarshes and tidal flats, developed in the area, reaching 10-15 km upstream the present-day fluvial-estuarine boundary, where the most upstream Late Mesolithic sites were identified. The environmental settings allowed for the occurrence and for the exploitation of marine molluscs and fish by the last hunter-gatherer communities of SW Iberia, at the proximity of the occupation areas. The estuarine environments maintained in the Sado main channel until the Late Holocene (ca. 4000 cal BP; 2050 cal BC), long after the abandonment of the sites by the Mesolithic groups.},
organization = {This work was developed in the framework of the following projects:
a) COASTTRAN - Coastal Transitions - A comparative approach to the processes of neolithisation in Atlantic
Europe (HAR2011-29907-C03-00), funded by the Ministerio de Ciencia e Innovación, Spain;
b) Back to Sado - A case study between last hunter-gatherers and first agro-pastoralist societies in southern
Portugal (PTDC/HISARQ/121592/2010), funded by Fundação para a Ciência e Tecnologia
(FCT), Portugal;
c) CoChange - Coastal societies in a changing world: A diachronic and comparative approach to the Prehistory of SW Europe from the late Palaeolithic to the Neolithic (HAR2014-51830-P) financed by the Ministerio de Ciencia e Innovación, Spain;
d) SimTIC - Symbols below the ground: An approach to the thinking of late Glacial hunter-gatherers using
information technology (HAR2017-82557-P), funded by Ministerio de Economía y Competitividad,
Spain.
Ana Maria Costa was supported by the FCT grant SFRH/BD/110270/2015 between 2016-2019.
Instituto Dom Luiz - IDL (UID/GEO/50019/2013 and UIDB/50019/2020) also supported the
work presented in the thesis.},
title = {El bajo valle del Sado durante el Holoceno : evolución paleoambiental, geomorfología y adaptaciones de los cazadores recolectores tardios},
author = {Caixado Novo da Costa, Ana María},
}