Past climate changes and ecophysiological responses recorded in the isotope ratios of saguaro cactus spines

@article{English2007PastCC,
  title={Past climate changes and ecophysiological responses recorded in the isotope ratios of saguaro cactus spines},
  author={N. B. English and D. Dettman and D. Sandquist and D. G. Williams},
  journal={Oecologia},
  year={2007},
  volume={154},
  pages={247-258}
}
  • N. B. English, D. Dettman, +1 author D. G. Williams
  • Published 2007
  • Biology, Medicine
  • Oecologia
    • The stable isotope composition of spines produced serially from the apex of columnar cacti has the potential to be used as a record of changes in climate and physiology. To investigate this potential, we measured the δ18O, δ13C and F14C values of spines from a long-lived columnar cactus, saguaro (Carnegiea gigantea). To determine plant age, we collected spines at 11 different heights along one rib from the stem apex (3.77 m height) to the base of a naturally occurring saguaro. Fractions of… CONTINUE READING
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