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Team TFS
Team TFS
Environmental perturbation effects on baseline δ15N values and zooplankton trophic flexibility in the southern California Current Ecosystem
Moira Décima (1), Michael R. Landry (1) and Brian N. Popp (2)
1) Scripps Institution of Oceanography, University of California at San Diego, La Jolla, California, 2) Department of Geology and Geophysics, University of Hawaii, Honolulu, Hawaii
Limnology and Oceanography (2013), V58(2), pp624–634 , doi: 10.4319/lo.2013.58.2.0624
Nitrogen isotopic compositions of zooplankton in the California Current Ecosystem (CCE) are known to vary over inter-annual scales of climate variability, but the extent to which those changes are driven by variations in baseline phytoplankton d15N values vs. zooplankton trophic position (TP) is poorly resolved. We use field samples collected during a large natural environmental perturbation, the 1998–1999 alternation between El Niño and La Niña states, to test the ability of large dominant CCE zooplankton Euphausia pacifica and Calanus pacificus to alter their TPs in response to environmental variability.
  • Nitrogen isotopes
  • Zooplankton
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