Ecology and shell chemistry of Loxoconcha matagordensis


Journal Article

Studies of the seasonal ecology and shell chemistry of the ostracode Loxoconcha matagordensis and related species of Loxoconcha from regions off eastern North America reveal that shell size and trace elemental (Mg/Ca ratio) composition are useful in paleothermometry using fossil populations. Seasonal sampling of populations from Chesapeake Bay, augmented by samples from Florida Bay, indicate that shell size is inversely proportional to water temperature and that Mg/Ca ratios are positively correlated with the water temperature in which the adult carapace was secreted. Microprobe analyses of sectioned valves reveal intra-shell variability in Mg/Ca ratios but this does not strongly influence the utility of whole shell Mg/Ca analyses for paleoclimate application.

Full Text

Duke Authors

Cited Authors

  • Cronin, TM; Kamiya, T; Dwyer, GS; Belkin, H; Vann, CD; Schwede, S; Wagner, R

Published Date

  • August 5, 2005

Published In

Volume / Issue

  • 225 / 1-4

Start / End Page

  • 14 - 67

International Standard Serial Number (ISSN)

  • 0031-0182

Digital Object Identifier (DOI)

  • 10.1016/j.palaeo.2005.05.022

Citation Source

  • Scopus