Disconnects in global discourses – the unintended costs of marine mammal protection on artisanal fishers

Researcher name: Katrina Davis

Period:  2017-Present

Outline of research:

Human–wildlife conflicts are escalating worldwide. These conflicts typically have negative impacts on biodiversity, ecosystem service provision, and human welfare. In Chile and Peru, two of the world’s biggest fishing nations, there is escalating conflict between artisanal fishers and sea lions (Otaria Byronia), which are a protected species. Sea lions can reduce fishers’ catch ~10 15% and heavily damage fishing gear. In response to these losses, there is evidence that fishers poison or shoot sea lions—directly impacting sea lion population dynamics.


Photo: Jeff Mangel

Objectives: In this research we quantify the perceptions of artisanal fishers regarding their interactions with sea lions in Chile and Peru, the impacts of these interactions, and how interactions have changed over time.


Summary of planned activities: We surveyed 300 net fishers along the coasts of Chile and Peru using a best-worst scaling (BWS) methodology to understand what fishers perceive motivates their conflict with sea lions. We collected additional data on how fishers perceive interactions with sea lions have changed over time and the impact of interactions on catch and income. We analyse responses using conditional logit (CL), heteroscedastic conditional logit (HCL) and scale-adjusted latent class (SALC) models.


sea lion
Photo: Jeff Mangel

See more about this project here 


Visit Katrina's profile page here