Fig. 3: National attributes also explain extinction risk.
From: Half a century of rising extinction risk of coral reef sharks and rays
Variable importance for explaining proportion of threatened species of all covariates across 1,000 bootstrapped boosted regression tree models for a sharks and b rays. The marginal effect c–n of each variable on the proportion of threatened species for rays and sharks ordered by variable importance. Explanatory variables were all scaled and centred around zero for presentation purposes; raw values were used in the analysis. Explanatory variables include: c sea surface temperature, d catch-per-unit-effort (CPUE), e shelf area, f primary production, g coastal population, h Gross Domestic Product (GDP), i marine protein consumption, j World Governance Index (WGI), k fishing effort, l catch, m sightings-per-unit-effort (SPUE), and n Human Development Index (HDI).
