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Case study

The incorporation of indigenous and local knowledge in the management and conservation of Caiman yacare (a crocodile species) in Bolivia

This estimate was used to develop a national-scale predictive model of abundance, which then informed national, regional and local policy options for improving the sustainable management of caiman harvest (Aguilera et al., 2008). Resulting management plans for indigenous territories and protected areas have been recognised as contributing to increases in caiman abundance in areas where they had been locally depleted and in reducing illegal hunting. Furthermore, this programme has resulted in benefits to local people, both through the conservation of caiman, and in supporting customary harvest levels that provide economic benefits to local people (Aparicio and Ríos, 2006; UNEP-WCMC, 2013).
CITES removed restrictions on the import of wild caiman from Bolivia in 1999 and records a positive caiman status since 1999, which was re-confirmed in 2006 (UNEP-WCMC, 2013). The IUCN/SSC Crocodile Specialist Group has also confirmed a good status of wild populations of C. yacare (Larriera et al., 2005; Campos et al., 2010).
IPBES Secretariat

Bolivia’s National Programme of Conservation and Sustainable Utilization (PNCASL) for the customary harvest and conservation of caiman (Caiman yacare) illustrates a case study of the successful integration of indigenous and local knowledge (ILK) into biodiversity models to inform policy options (Llobet et al., 2004; Van Damme et al., 2007; Campos et al., 2010). Following the increasing engagement of local communities in PNCASL, new biological, socio-economic and cultural indicators of species health and abundance were developed and trialled. These included both biological indicators (based on models of the species) and socio-economic and cultural indicators of species health. One of the first trials took place in the Indigenous Territory and National Park Isiboro Sécure (TIPNIS), where local knowledge was initially the most reliable source on the status of Caiman yacare. Here, traditional knowledge on the status of caiman was incorporated into the development of robust indicators to inform resource quotas for customary harvest within this protected area. Traditional resource users participated in workshops where they defined concepts, harmonised criteria and conceptualised traditional knowledge of caiman habitats and territories into spatial maps. Population abundance was measured by scientific researchers, comparing estimates using both scientific techniques and indigenous techniques suggested by the communities (Aguilera et al., 2008). Models for estimating population abundance were adapted to make use of indigenous techniques of estimating caiman abundance and to incorporate qualitative indicators such as individuals’ perceptions of changes in caiman abundance, for example accounting for information from statements such as ‘there are a lot more caiman than before’. The process was repeated with communities across the TIPNIS territorial region, using this integration of knowledge systems and harvest estimates developed from local knowledge, and fortified with scientific concepts and criteria (e.g. sizes of hunt allowed) that were internalised by the local communities. This integrated process yielded a combined caiman population estimate for the protected area based on local knowledge.