Percentage of utilization of the eight most common tree families and taxa used for nesting and percentage of tree abundance recorded in 69 botanical plots in three different areas: Malua, Segama and North Ulu Segama.

<p>Percentage of utilization of the eight most common tree families and taxa used for nesting and percentage of tree abundance recorded in 69 botanical plots in three different areas: Malua, Segama and North Ulu Segama.</p

Orang-utan density estimates achieved during ground and aerial surveys over corresponding areas.

<p>Orang-utan density estimates achieved during ground and aerial surveys over corresponding areas.</p

Location of aerial and ground surveys in Ulu Segama Malua, Sabah, Malaysian Borneo.

<p>Location of aerial and ground surveys in Ulu Segama Malua, Sabah, Malaysian Borneo.</p

Number of orang-utans living in the USM forests estimated from the combination of ground and aerial surveys (See Figure 2 for the exact locations of the areas).

<p>Number of orang-utans living in the USM forests estimated from the combination of ground and aerial surveys (See <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0011510#pone-0011510-g002" target="_blank">Figure 2</a> for the exact locations of the areas).</p

Location, main characteristics, orang-utan densities (with associated Coefficient of Variation) of all ground surveys conducted in the USM forests.

<p>Legend: Deg.: degraded; Overdeg: over-degraded; asl: above sea level; n/a: not available; Nb plots: number of botanical plots; CV: coefficient of variation obtained by Distance.</p