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Area of Science:

  • Plant Science
  • Botany
  • Ecology

Background:

  • Tree stems are vital for nutrient storage and supply.
  • Limited data exists on stored resources within cycad stems.

Purpose of the Study:

  • To quantify essential nutrients and metals in *Cycas micronesica* stems.
  • To compare stem nutrient concentrations with leaf concentrations and other tree types.

Main Methods:

  • Collected stem tissue from apical and basal regions, and separated pith, vascular, and cortex tissues radially.
  • Quantified minerals and metals in all collected tissues and leaves.

Main Results:

  • Significant variation in mineral and metal concentrations was observed across stem sections.
  • Phosphorus, zinc, and nickel showed notable variations within radial stem sections.
  • Stem carbon was lower and calcium higher than expected; elemental concentrations exceeded those in coniferous gymnosperms.

Conclusions:

  • Cycad stems are rich in essential nutrients that can be mobilized.
  • This study enhances understanding of nutrient relations in gymnosperms versus angiosperms.
  • Further research on cycad species will improve knowledge of plant nutrient dynamics.