Kingston, A. W. and Gröcke, D. R. and Burchell, M. (2008) 'A multiaxial growth analysis of stable isotopes in the modern shell of Saxidomus gigantea : implications for sclerochronology studies.', Geochemistry, geophysics, geosystems., 9 (1). Q01007.
Stable-isotope ratios of two modern Saxidomus gigantea specimens from Namu, British Columbia, are presented to show intraspecimen and interspecimen isotopic variation. Isotopic profiles (δ 13Cshell, δ 18Oshell) were generated along the axis of maximum growth. The profiles show that analogous seasonal variation is recorded in δ 18Oshell; however, significant variability is recorded in δ 13Cshell. We suggest this is caused by differences in metabolic activity between individuals. Intrashell variability along a growth horizon shows good reproducibility in δ 13Cshell but significant variability in δ 18Oshell, especially at the sinistral margin. A multiaxial growth analysis generated several profiles from a single valve. Similar seasonal variations are recorded in δ 18Oshell along all axes. δ 13Cshell show significantly less covariation, possibly related to internal metabolic activity. This study highlights that δ 18Oshell profiles generated from any portion of the shell can be used to evaluate seasonal fluctuations and may be excellent to evaluate types and rates of shell growth.
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|Publisher Web site:||https://doi.org/10.1029/2007GC001807|
|Publisher statement:||© 2008 American Geophysical Union. Kingston, A. W. and Gröcke, D. R. and Burchell, M. (2008) A multiaxial growth analysis of stable isotopes in the modern shell of Saxidomus gigantea: implications for sclerochronology studies., Geochemistry, Geophysics, Geosystems, 9, Q01007, doi:10.1029/2007GC001807. To view the published open abstract, go to https://doi.org and enter the DOI|
|Date accepted:||27 November 2007|
|Date deposited:||08 June 2010|
|Date of first online publication:||29 January 2008|
|Date first made open access:||No date available|
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