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Devastating Decline of Forest Elephants in Central Africa

Figure 2

Estimated change in elephant dung density (/km2) distribution during 2002–2011 across the Central African forests.

Results are shown as a percentage of the total area of potential elephant habitat overall (A & B) and by country (C & D) for the predictive model with variables: (A & C) survey year, Human Influence Index, corruption and the presence/absence of guards, and (B & D) survey year, proximity to road, human population density, corruption and the presence/absence of guards. The dung density (per km2) intervals are unequal and correspond to the following elephant population categories: extremely low density (0–100), very low (100–250), low (250–500), medium (500–1,000), high (1,000–3,000) and very high (3,000–7,500). With the loss of very high elephant populations in 2011, there is a significant shift into the lower density intervals over the nine years.

Figure 2

doi: https://doi.org/10.1371/journal.pone.0059469.g002