Report

Otolith δ18O Record of Mid-Holocene Sea Surface Temperatures in Peru

See allHide authors and affiliations

Science  22 Feb 2002:
Vol. 295, Issue 5559, pp. 1508-1511
DOI: 10.1126/science.1062004

You are currently viewing the abstract.

View Full Text

Log in to view the full text

Log in through your institution

Log in through your institution

This article has a correction. Please see:

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.

  • * To whom correspondence should be addressed. E-mail: andrus{at}gly.uga.edu

View Full Text