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Early to Middle Holocene Estuarine Shellfish Collecting on the Islands and Mainland Coast of the Santa Barbara Channel, California, USA

Rick, Torben C.

Open quaternary, 2020-09, Vol.6 (1), p.9 [Periódico revisado por pares]

Ubiquity Press

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  • Título:
    Early to Middle Holocene Estuarine Shellfish Collecting on the Islands and Mainland Coast of the Santa Barbara Channel, California, USA
  • Autor: Rick, Torben C.
  • Assuntos: coastal ecosystems ; human ecology ; mollusk ; sea level rise ; subsistence ; zooarchaeology
  • É parte de: Open quaternary, 2020-09, Vol.6 (1), p.9
  • Descrição: Terminal Pleistocene to Middle Holocene sea level rise resulted in a number of changes to coastal ecosystems around the world, providing new challenges and opportunities for coastal peoples. In California, glacial to interglacial sea level rise resulted in some reductions in rocky shore kelp forests, but it also resulted in the formation of estuaries. Estuaries were important for terminal Pleistocene peoples in the Santa Barbara Channel region (SBC), a pattern that persisted through the Early to Middle Holocene, and sometimes later. While paleoestuaries appear to have been relatively common along the SBC mainland coast, they were rare to absent on the Channel Islands. The Abalone Rocks Paleoestuary on Santa Rosa Island is the only well documented island estuary. However, questions remain about the size and productivity of this estuary and its importance for human subsistence and settlement relative to the more extensive mainland estuaries. Faunal data from two previously unreported site components and synthesis of shellfish data from other Abalone Rocks sites and similarly aged sites near mainland estuaries illustrate the importance of SBC mainland versus island estuaries. Estuarine shellfish were considerably more abundant at most Early and Middle Holocene mainland sites, with the Abalone Rocks Paleoestuary largely supplementary to rocky shore habitats. At island estuary sites, taxonomic richness was fairly consistent during the Early to Middle Holocene, although diversity and evenness decline slightly through time, with estuarine shellfish largely disappearing from island assemblages prior to 5000 years ago. These data demonstrate the power of archaeological research to evaluate the relationships between past environmental change and human behavior.
  • Editor: Ubiquity Press
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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