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Stable isotope food web analysis of a large subtropical lake: alternative explanations for 15N enrichment of pelagic vs. littoral fisheries

Dates

Year
2003

Citation

Havens, Karl E, Gu, Binhe, Fry, Brian, and Kendall, Carol, 2003, Stable isotope food web analysis of a large subtropical lake: alternative explanations for 15N enrichment of pelagic vs. littoral fisheries: TheScientificWorldJournal, v. 3, p. 613-622.

Summary

The food webs of littoral, pelagic, and littoral-pelagic ecotone (interface) regions of a large subtropical lake were investigated using stable isotope ratio methods, expanding the focus of a previous fish-only study to include other food web components such as primary producers and invertebrates. In these food webs, delta13C increased approximately 4 per thousand and delta15N increased approximately 10 per thousand from primary producers to fish. The delta15N of fish was approximately 9 per thousand in the littoral zone, approximately 10 per thousand in the ecotone, and approximately 12 per thousand in the pelagic zone. The cross-habitat enrichment in fish 15N corresponded with both an increase in the size of fish and an increase [...]

Contacts

Communities

  • USGS National Research Program

Tags

Provenance

Added to ScienceBase on Fri Apr 19 09:06:26 MDT 2013 by processing file <b>Isotope Tracers of Biogeochemical and Hydrologic Processes.xml</b> in item <a href="https://www.sciencebase.gov/catalog/item/504216bae4b04b508bfd338b">https://www.sciencebase.gov/catalog/item/504216bae4b04b508bfd338b</a>

Additional Information

Identifiers

Type Scheme Key
DOI http://sciencebase.gov/vocab/identifierScheme 10.1100/tsw.2003.55

Citation Extension

citationTypeJournal Article
journalTheScientificWorldJournal
parts
typePages
value613-622
typeVolume
value3

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