Papua New Guinea is the largest Pacific Island nation, occupying the eastern half of New Guinea and numerous smaller islands. Its geography is diverse, ranging from rugged mountain ranges and highland valleys to extensive rainforests, mangroves, and coral reefs. PNG is one of the most biologically rich countries in the world, with ecosystems that support millions of people through agriculture, fisheries, and forestry. Invasive species management is increasingly recognized as a national priority, with efforts linked to the development of a new National Biodiversity Strategy and Action Plan (NBSAP 2025–2030) and integration into broader environmental governance frameworks.
Vue d'ensemble
Biodiversity Status
PNG is a global biodiversity hotspot, hosting thousands of endemic plant and animal species, including birds of paradise, marsupials, and orchids. Its forests are among the largest tropical rainforests outside the Amazon and Congo, providing critical carbon storage and ecosystem services. Coral reefs and mangroves sustain fisheries, protect coastlines, and support traditional livelihoods. Biodiversity is deeply tied to cultural identity, with traditional knowledge guiding sustainable resource use.
Invasive Species Threats
Rats, feral cats, and pigs threaten native wildlife and agricultural production. Invasive plants such as Mikania micrantha and Merremia peltata degrade forests and croplands. Agricultural pests, including the coconut rhinoceros beetle and invasive ants, impact food security and livelihoods. Invasive freshwater species pose risks to aquatic ecosystems and fisheries.
National Strategies & Plans
PNG is developing its NBSAP 2025–2030, which will integrate invasive species management into national biodiversity priorities. The Conservation and Environment Protection Authority (CEPA) leads national efforts, supported by regional partners. Invasive species management is linked to PNG’s Vision 2050 and climate resilience strategies, ensuring alignment with sustainable development goals. Community based initiatives and partnerships with NGOs are central to monitoring, control, and restoration efforts.
Quick Facts
Programmes
Natural Enemies-Natural Solutions (NENS)
