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Fishing, Subsistence Change, and Foraging Strategies on Western Santa Rosa Island, California

Published online by Cambridge University Press:  14 May 2020

Christopher S. Jazwa*
Affiliation:
Department of Anthropology, University of Nevada, Reno, NV89557, USA
Terry L. Joslin
Affiliation:
Central Coast Archaeological Research Consultants, San Luis Obispo, CA93401, USA
Douglas J. Kennett
Affiliation:
Department of Anthropology, University of California, Santa Barbara, CA93106, USA
*
(cjazwa@unr.edu, corresponding author)

Abstract

Shifting from shellfish collecting to fishing as a primary coastal foraging strategy can allow hunter-gatherers to obtain more food and settle in larger populations. On California's northern Channel Islands (NCI), after the development of the single-piece shell fishhook around 2500 cal BP, diet expanded from primarily shellfish to include nearshore fishes in greater numbers. During the Medieval Climatic Anomaly (1150–600 cal BP), settlement on the islands condensed to a small number of large coastal villages with high population densities supported largely by nearshore fish species including rockfishes, surfperches, and señoritas. Faunal data from five sites on western Santa Rosa Island (CA-SRI-15, -31, -97, -313, and -333) demonstrate an increase in nearshore fishing through time. We argue that demographic changes that occurred on the northern Channel Islands were accompanied by changes in subsistence strategies that were related in part to risk of failure when attempting to acquire different resources. As population density increased, the low-risk strategy of shellfish harvesting declined in relative importance as a higher-risk strategy of nearshore fishing increased. While multiple simultaneous subsistence strategies are frequently noted among individual hunter-gatherer communities in the ethnographic record, this study provides a framework to observe similar patterns in the archaeological record.

El cambio de la recolección de moluscos a la pesca como una estrategia primaria de forrajear costero pueda permitir las cazadores-recolectores a obtener más comida y asentar con poblaciones más altas. En las islas Channel más norteñas de California (NCI), después el desarrollo de los anzuelos hechos de piezas individuales de concha cerca de 2500 años calibrados ante de presente (cal BP), la dieta expandía de moluscos ante todo a incluir peces de cerca de la orilla en cantidades mayores. Durante la anomalía climática medieval (1150–600 cal BP), asentamiento en las islas condensaba a una cantidad pequeña de pueblos costales grandes con poblaciones de alta densidad apoyados por especies de pez de cerca de la orilla incluso de los rocotes, las mojarras y las señoritas. Datos faunales de cinco sitios de la región oeste de la Isla Santa Rosa (CA-SRI-15, -31, -97, -313 y -333) demuestran un aumento en la pesca cerca de la orilla a través del tiempo. Discutimos que cambios demográficos que ocurrían en la NCI eran acompañados por cambios en las estrategias subsistencias relacionadas en parte al riesgo de el fracaso cuando intentar a obtener recursos diferentes. Mientras la densidad de población aumentaba, la estrategia de bajo riesgo de cosechar los moluscos declinaba en importancia relativa y la estrategia del riesgo alto de la pesca cerca de la orilla aumentaba. Aunque ejemplos de múltiples estrategias de subsistencia simultáneos en comunidades de cazadores-recolectores están presentes en el registro etnográfico, este estudio proporciona una estructura a observar patrones semejantes en el registro arqueológico.

Type
Reports
Copyright
Copyright © 2020 by the Society for American Archaeology

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References

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