Otolith δ 18 O Record of Mid-Holocene Sea Surface Temperatures in Peru-Reference-Cited by-同舟云学术

Otolith δ 18 O Record of Mid-Holocene Sea Surface Temperatures in Peru

Published:2002-02-22 Issue:5559 Volume:295 Page:1508-1511
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Andrus C. Fred T.¹,Crowe Douglas E.¹,Sandweiss Daniel H.²,Reitz Elizabeth J.³,Romanek Christopher S.¹⁴

Affiliation:

1. Department of Geology, University of Georgia, Athens, GA 30602–2501, USA.

2. Department of Anthropology and Institute for Quaternary Research, S. Stevens Hall, University of Maine, Orono, ME 04469, USA.

3. Department of Anthropology and Georgia Museum of Natural History, Natural History Building, University of Georgia, Athens, GA 30602–1882, USA.

4. Savannah River Ecology Laboratory, Drawer E, Aiken, SC 29802, USA.

Abstract

Peruvian sea catfish ( Galeichthys peruvianus ) sagittal otoliths preserve a record of modern and mid-Holocene sea surface temperatures (SSTs). Oxygen isotope profiles in otoliths excavated from Ostra [6010 ± 90 years before the present (yr B.P.); 8°55′S] indicate that summer SSTs were ∼3°C warmer than those of the present. Siches otoliths (6450 ± 110 yr B.P.; 4°40′S) recorded mean annual temperatures ∼3° to 4°C warmer than were measured under modern conditions. Trophic level and population diversity and equitability data from these faunal assemblages and other Peruvian archaeological sites support the isotope interpretations and suggest that upwelling of the Peru-Chile current intensified after ∼5000 yr B.P.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference35 articles.

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