A toolkit for the economic analysis of invasive species

Societies around the globe harvest wild species, to a greater or lesser extent, for food, building materials, healthcare, medicines, pest control, ornamentation, income, recreation, and cultural and spiritual purposes. While this use of wild species directly contributes to the well-being of billions of people globally, over-exploitation of wild species is one of the key drivers of biodiversity loss. The IUCN Guidelines on harvesting threatened species advise decision-makers on whether, how and what to harvest to ensure the sustainable use of threatened animal, plant and fungal species. Drawing on insights from the IPBES Sustainable Use Assessment, they complement and expand on existing guidance and tools, such as the Guidelines for the Appropriate Use of IUCN Red List Data in Harvesting of Threatened Species and recent CITES guidance on the conduct of Non-Detriment Findings.

Ngao Model Forest in Lampang, Thailand, faces significant wildfire challenges due to agricultural burning, which affects the environment and local livelihoods. The community, led by a team of women in Ban Pong village, has successfully managed to keep the area fire-free for the past decade through regular patrols, awareness campaigns, and the use of modern technology. Their efforts have not only reduced wildfires but also expanded community forests, created economic opportunities, and empowered women in leadership roles. This initiative highlights the importance of community engagement and sustainable practices in addressing environmental issues while bringing social and economic benefits.

Tun Mustapha Park (TMP) is Malaysia’s largest multi-use marine protected area, supporting diverse coral reef ecosystems and coastal communities that rely heavily on marine resources for their livelihoods. However, like many coral reefs globally, parts of TMP’s reef systems have been severely degraded due to destructive fishing practices, climate change impacts, and other human-induced pressures. To address this, a large-scale coral restoration initiative was introduced using the Mars Assisted Reef Restoration System (MARRS) — an innovative method that uses hexagonal steel structures, called reef stars, to stabilize rubble fields and accelerate coral regrowth. A key strength of this initiative is its emphasis on collaboration and local engagement. The project actively involves local communities and stakeholders fostering a sense of shared responsibility in reef rehabilitation. Through these partnerships, the project has improved coral cover and fish habitat, and strengthened stewardship of marine resources.

In response to growing environmental challenges, Montenegro is embracing digitalization and new technologies to safeguard its biodiversity. As part of the “Biodiversity Mainstreaming into Sectoral Policies and Practices and Strengthening Protection of Biodiversity Hotspots in Montenegro” (GEF 7) initiative, the project has facilitated cross-sectoral and multi-institutional cooperation while piloting innovative solutions aimed at improving decision-making processes and biodiversity protection through enhanced data collection, institutional collaboration, and the application of new technologies.

This solution is set in Madagascar’s Ankeniheny-Zahamena Corridor (CAZ), a globally recognized biodiversity hotspot that shelters numerous endangered and vulnerable lemur species. The project site, Fierenana—a rural commune in the western CAZ—is designated as an Alliance for Zero Extinction (AZE) site, uniquely identified as the only place on Earth where at least one critically endangered species survives in its natural habitat.

Despite this ecological importance, conservation efforts face major challenges, including habitat degradation, weak law enforcement, and limited local capacity. The solution, implemented through the “CAZ4Lemurs” project with support from BIOPAMA, addresses these issues by empowering local community-based organizations (COBAs) to manage forest buffer zones and monitor lemur populations. The initiative has enhanced patroller skills and fostered law enforcement. Environmental education is being integrated into school curricula, while legal training strengthens enforcement, and promotes livelihoods.

Shanglin community (Chiayi County, Taiwan) is a plain landscape with predominantly Han Chinese population. Bamboo shoot cultivation is the main production activity. The riparian zones of bamboo and secondary forests in the area are home to the endemic Farmland tree frog (Zhangixalus arvalis). It is listed as endangered on the IUCN Red List. In recent years, the decline of the bamboo shoot industry and changing land use patterns have led to its habitat loss and fragmentation.
In 2018, the Chiayi Branch of the Forestry and Nature Conservation Agency began promoting Farmland tree frog-friendly farming practices in Shanglin community. In 2021, resilience assessment workshops (RAWs) were used as a tool to better understand local challenges and align conservation and development priorities. RAWs results elicited the need to enhance biodiversity-based incomes and diversify marketing channels, effectively manage water quality and quantity, and strengthen the residents’ resilience to natural disasters.