Exploration of Amorphophallus spp. on the visitor trails of Sibolangit Nature Park

Abstract

Araceae is one of the plant families distributed in tropical climates. There are two species of Araceae family that are protected in Indonesia, i.e., Amorphophallus decus-silvae and Amorphophallus titanum. Sibolangit Nature Park (TWA Sibolangit) is one of the oldest conservation areas in Indonesia. This area has a variety of vegetation species that play a role in providing shade to support the existence of Amorphophallus populations, along with the thick litter which can maintain habitat moisture for Amorphophallus. This study aims to describe the morphological characteristics and analyse the distribution patterns of Amorphophallus populations on the visitor trails of Sibolangit Nature Park. The recording points were saved using SW Maps to create a species distribution map. Each founded individual of Amorphophallus Sp. was described based on its growth phase and characteristics, such as flowers, leaves, stems, and tubers. The height and diameter of the vegetation were also measured. The field study recorded 64 individuals of Amorphophallus spp. along the visitor trails of Sibolangit Nature Park. All individuals were observed in the vegetative phase and distributed in cluster. Amorphophallus populations at the study site lead to a declining age structure pattern. Sibolangit nature park management can maximize the potential of Amorphophallus spp. to be economically beneficial both for management and for the community. The distribution map of Amorphophallus is expected to be taken into consideration by the area management in reconstructing the Sibolangit Nature Park ecotourism program in the future to attract more visitors.