Richness and Abundance of Tree Species in the Bonsai Field, Mount Hamiguitan, San Isidro, Davao Oriental

A comprehensive assessment of the Bonsai Field, Mount Hamiguitan Range Wildlife Sanctuary, reveals high species diversity with 67 tree species documented, including 11 dominant and 56 rare species. Chinese cedar (Toona sinensis) emerged as the most abundant, with a mean density of 5,280 stems/ha and a percent cover of 15.20%, followed by Bitanghol (Calophyllum blancoi) and Malasulasi (Leptospermum flavescens Sm.). The study employed mechanical sampling with line plots across ten sample areas, leveraging both reference methods and Indigenous Knowledge Systems for species identification. Distribution patterns were clumped, particularly for Chinese cedar and Zysigium spp., while diversity indices indicated high biodiversity (Shannon Diversity Index: 3.4060). This baseline data underscores the ecological significance of the Bonsai Field, offering critical insights for environmental management and conservation efforts in Mount Hamiguitan Range.

HAPINAT, J. R. S. (2025). Richness and Abundance of Tree Species in the Bonsai Field, Mount Hamiguitan, San Isidro, Davao Oriental. Davao Research Journal, 7(2). https://doi.org/10.59120/drj.v7i2.482