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A fauna malacológica da ocupação calcolítica do Castro de Chibanes
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Abstract(s)
Estudam-se os moluscos do Castro de Chibanes cujas conchas foram recolhidas em contextos do
Calcolítico e Bronze Antigo (III milénio BC). A análise da colecção evidenciou a presença de 19 espécies
de bivalves e 6 de gastrópodes de ambiente marino-estuarino. Predomina grandemente, em todas
as camadas identificadas, a espécie Ruditapes decussatus, seguida a larga distância pela espécie Solen
marginatus. Nas diferentes camadas observou-se grande variedade de moluscos, numa média de 11 a
13 espécies por camada.
As espécies mais abundantes indicam a exploração de ambientes marino-estuarinos de substrato
areno-vasoso, como os do Tejo e Sado.
No último quartel do III milénio BC, a Ruditapes decussatus continua a dominar, não revelando,
pelas análises biométricas efectuadas, indícios de sobre-exploração, embora se registe uma maior diversidade
de espécies; destaque para a presença de ostra.
Abstract: The study of the mollusks from the Chalcolithic and the early Bronze age (III Millennium BC) contexts discovered in Chibanes revealed the presence of 19 bivalves and 6 gastropods species from estuarine/maritime environment. The Ruditapes decussatus (clams) greatly predominates in all of the identified layers, followed by Solen Marginatus (razor clams) with a significant difference. In the several layers a great variety of mollusks was observed with an average of 11 to 13 species per layer. The most abundant species indicate the exploitation of the sandy-mud substrate of the tidal zones in the Tagus and Sado estuaries. In the last quarter of the 3rd millennium BC, the dominance of the Ruditapes decussatus remained, but the biometric analyses have not revealed any evidence of over-exploitation. The diversity of species is greater than previously; a special remark is due to the presence of oyster.
Abstract: The study of the mollusks from the Chalcolithic and the early Bronze age (III Millennium BC) contexts discovered in Chibanes revealed the presence of 19 bivalves and 6 gastropods species from estuarine/maritime environment. The Ruditapes decussatus (clams) greatly predominates in all of the identified layers, followed by Solen Marginatus (razor clams) with a significant difference. In the several layers a great variety of mollusks was observed with an average of 11 to 13 species per layer. The most abundant species indicate the exploitation of the sandy-mud substrate of the tidal zones in the Tagus and Sado estuaries. In the last quarter of the 3rd millennium BC, the dominance of the Ruditapes decussatus remained, but the biometric analyses have not revealed any evidence of over-exploitation. The diversity of species is greater than previously; a special remark is due to the presence of oyster.
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Keywords
Arqueologia Calcolítico Castro de Chibanes Fauna malacológica