Conservation Assessment of Philippine Begonia

ID: 613 / 460

Category: Abstract

Track: Pending

Proposed Symposium Title: Conservation Assessment of Philippine Begonia


Rosario R. Rubite1, Mark Hughes2, Kuo-Fang Chung3, Danilo N. Tandang3,4,5,6,  Mark Angelo C. Bucay3,5,6

Affiliations: 1Department of Biology, College of Arts and Sciences, University of the Philippines Manila, Padre Faura, Manila, Philippines, 1000 2Royal Botanic Garden Edinburgh, 20A Inverleith Row, Edinburgh EH3 5LR, Scotland, UK. 3Biodiversity Research Center, Academia Sinica, 128 Academia Road, Section 2, Taipei 11529, Taiwan 4 Philippine National Herbarium, Botany and National Herbarium Division, National Museum of Natural History, National Museum of the Philippines, T. M. Kalaw St., Manila 1000, Philippines 5 Biodiversity Program, Taiwan International Graduate Program, Academia Sinica and National Taiwan Normal University, Taipei, 11529, Taiwan 6 Department of Life Science, National Taiwan Normal University, Taipei 11677, Taiwan


After almost 20 years of extensive fieldwork, we now have sufficient data to assess the  conservation status of the Philippine Begonia. Out of 166 taxa, 163 species are endemic to the Philippines. Ninety two (92) species are known only from the type locality, 54 taxa are known from fewer than five localities. The conservation assessment of each taxon  was made following the IUCN Red List Categories and Criteria v15.1 (2022). Each species was assigned to one of the seven categories namely; Extinct (EX), Critically Endangered (CR), Endangered (EN), Vulnerable (VU), Near Threatened (NT), Least Concern (LC) and Data Deficient (DD). Preliminary assessment were carried to calculate the area of occupancy and extent of occurrence of each species. These were expanded by using information gathered from field observations, herbarium specimens and literatures. A large 105 species are threatened including 24  Critically Endangered taxa, 34 are Endangered while 47 are Vulnerable. The remaining 59 species include  4 Near Threatened, 21 Least Concern and 34 Data Deficient.

Symposia selection: 117, 37, 155

Key words: conservation assessment, narrow endemic, critically endangered, Begonia, Philippines