This detailed report presents the 2005 annual census of the Haleakalā Silversword (ʻāhinahina, Argyroxiphium sandwicense subsp. macrocephalum) conducted in Haleakalā National Park. It includes flowering data from across the crater, long-term monitoring from 11 permanent plots, and trend graphs dating back to 1934. The silversword is a rare and iconic species endemic to Maui, making this resource a valuable window into plant life cycles, conservation challenges, and ecological monitoring in Hawaiʻi.
Students and educators can use the census data, charts, and observations to:
Explore population trends, flower cycles, and mortality rates
Compare flowering events across decades
Interpret long-term ecological datasets
Discuss conservation practices and species vulnerability
Create graph-based reflections or reports based on real field data
Suggested classroom applications include:
Graphing activities from historical data
Storytelling prompts around the silversword’s life cycle
Ecosystem monitoring simulations or roleplay as field biologists
Native Hawaiian species conservation
Long-term ecological monitoring
Population biology and life cycles
Haleakalā National Park ecology
Endemism and extinction vulnerability
Graph reading and interpretation
Environmental change over time
