Samoa is made up of two main islands, Upolu and Savai’i, along with several smaller islets. Its landscapes range from volcanic highlands and dense tropical forests to mangrove swamps and coral reefs. These ecosystems are central to Samoan culture and livelihoods, supporting agriculture, fisheries, and tourism. Invasive species management has progressed through the creation of the Samoa National Invasive Species Task Team (SNITT) and the launch of the Samoa IAS Information System (2026), which provides a coordinated platform for data and monitoring.
Vue d'ensemble
Biodiversity Status
Samoa hosts a rich array of endemic species, including birds such as the Mao and the Samoan whistler. Coral reefs and mangroves provide food security and coastal protection, while forests safeguard water catchments. Biodiversity is closely tied to traditional practices and community well being.
Invasive Species Threats
Invasive plants such as Merremia peltata and African tulip tree smother native vegetation and reduce forest resilience. Vertebrates including rats, myna birds, and feral pigs threaten crops and native species. Invertebrates such as invasive ants and agricultural pests disrupt ecosystems and livelihoods.
National Strategies & Plans
Samoa’s National Invasive Species Framework Strategy and Action Plan (2019–2024 guides national invasive species management and is currently under review for extension. SNITT provides a multi stakeholder governance mechanism, involving government, NGOs, and academia. Integration with Samoa’s NBSAP ensures invasive species control is linked to broader biodiversity and climate goals.
