Despite High Local Knowledge, Limited Stakeholder Participation and Resource Mobilization Constrain the Effective Management of Invasive Plants in Nepal’s Protected Areas

Invasive alien species are major driver of socio-ecological changes, and pose threats to protected areas (PAs) and native biodiversity globally. To reduce their impacts, management effort should be timely, and guided through stakeholder engagement. This study investigated the level of community awareness, and documented perceptions and stakeholder participation in management of invasive alien plant species (IAPS) in ten of Nepal’s twenty PAs (five from each Tarai-Siwalik and Mountain regions). It draws on focus group discussions (n = 60) and key informant interviews (n = 47). We found that people had substantial local knowledge of IAPS and had been substantially impacted by them without having knowledge of their exotic nature. Reported impacts included native species loss, increased weeding time, crop loss, reduced forage availability, and reduced forest regeneration. Lantana camara, Mikania micrantha, Ageratina adenophora and Ageratum houstonianum were the most problematic IAPS causing both ecological and socio-economic impacts. Management efforts were sporadic, inadequate and rarely guided by formal plans or programs. Regional analysis showed that the PAs located in the Tarai-Siwalik regions (southern lowland) experienced greater invasion impacts but received marginally more management than the mountain PAs. While efforts have been made to control IAPS both by local communities and PA authorities at few locations in the Tarai-Siwalik region, the lack of such efforts despite growing problems in the mountain PAs with unique biodiversity is a matter of great conservation concern. Overall, limited participation among stakeholders, along with very low resource mobilization are the key barriers to effective management of IAPS in Nepal’s PAs.