Current Issue Archive About Editorial Board Contact
ISSN 2066-7639 (print) · ISSN 2067-6352 (online)
AAB Bioflux / Article

Diversity and conservation status of Nepenthes in Rokan Hulu Regency, Riau Provi...

Research Article
Diversity and conservation status of Nepenthes in Rokan Hulu Regency, Riau Province, Indonesia
1Arief A. Purnama, 1Muhammad Septiyono, 1Jelita D. Nurdaniah, 1Aisyah Harahap, 1Sintia Rahmadewi, 1Nining W. Sari, 1Dela Mulyani, 1Yazid Alromadona, 1Rina Velina, 2Multazam Tarigan, 2Alex S. Siagian, 2 Iskandar Muda
1 Biology Education Study Program, Faculty of Teacher Training and Education University of Pasir Pengaraian, Rokan Hulu District, Riau Province, Indonesia; 2Conservation in Biodiversity Action, Rokan Hulu District, Riau Province, Indonesia. Corresponding author: A.A. Purnama, ariefanthoniuspurnama@gmail.com
Published2026
JournalAAB Bioflux
Volume / Issue18(1)/2026
Pagespp. 59-67
AccessOpen Access

Abstract

This study investigated the diversity, distribution, population status, habitat characteristics, and conservation status of Nepenthes species in Rokan Hulu Regency, Riau Province, Indonesia. Field surveys were conducted from June to December 2025 using direct habitat exploration across forest, shrubland, and riparian ecosystems. Species identification was performed through detailed morphological examination, focusing on pitcher shape, coloration, peristome structure, leaf morphology, and tendril characteristics, with reference to standard taxonomic literature. A total of three species were documented: Nepenthes eustachya, N. gracilis, N. longifolia. All recorded species are listed under Appendix II of CITES and are generally classified as Least Concern (LC) by the IUCN, indicating low extinction risk but requiring regulated trade and monitoring. Species distribution was relatively balanced between the Rokan IV Koto and Sungai Bungo areas, indicating the persistence of suitable microhabitats despite extensive land-use change. Most recorded species were associated with upland and nutrient-poor environments characterized by high humidity and heterogeneous vegetation structure. Although large portions of natural forest in Rokan Hulu have been converted into oil palm plantations, observed populations appeared relatively stable at the time of study; however, ongoing habitat transformation poses potential long-term risks.

Keywords

carnivorous plants species distribution habitat tropical forest land-use change
Download PDF ← Back to Issue