Visual sightings and participatory mapping methods to reveal the Irrawaddy Dolphin in Indragiri Hilir, Riau, Indonesia
Year: 2026
Type: conference-paper
Abstract: The Irrawaddy dolphin (Orcaella brevirostris) is known as “pesut”, an endangered species that inhabits estuarine and coastal habitats, including the waters of Indragiri Hilir, Riau. However, scientific data on its spatial distribution patterns are still limited. This study combines visual sighting methods and participatory mapping to reveal the dolphins’ locations and identify their important habitats within the Indragiri Hilir Regional Marine Conservation Area “KKLD”. Visual observations were conducted at 31 stations along the coastline and river mouths, while collecting participatory data through interviews with 62 local fishermen in nine coastal villages. The results identified three consistent dolphin sighting locations consistent with community information, particularly in waters associated with mangrove ecosystems. This study describes how integrating scientific data and local community knowledge can produce spatial information which is sufficiently accurate and relevant. The uniqueness of this approach lies in the integration of scientific methods and community participation in mapping the distribution of marine mammals. The research findings can support conservation decision-making and spatial planning implementation, particularly for vulnerable and endangered species in ecologically fragile coastal areas.
Language: English
Subfield: Ecology
Field: Environmental Science
Domain: Physical Sciences
SDG: Life below water
Open Access status: diamond
OpenAlex ID: W7127049232