Electronic Supplementary Material

Habitat Selection and Use of Space by Bald-faced Sakis (Pithecia irrorata) in Southwestern Amazonia: Lessons from a Multiyear, Multigroup Study

Suzanne Palminteri · Carlos A. Peres

Table SI Percentage of use, composition, and availability of 4 main forest types for 5 bald-faced saki groups at Los Amigos, Peru

Group / Measure / Terra firme / Floodplain / Bamboo / Palm swamp
A / Use / 56.2*** / 38.9*** / 0.2*** / 4.7***
Core / 72.7 / 20.4 / 1.4 / 5.5
Home Range / 37.4 / 51.9 / 3.1 / 7.7
Available / 29.6 / 47.7 / 14.3 / 8.3
B / Use / 92.7*** / 3.8*** / 0.6*** / 2.8***
Core / 98.8 / 0.0 / 1.2 / 0.0
Home Range / 85.0 / 3.7 / 7.5 / 3.8
Available / 67.1 / 19.9 / 4.1 / 9.0
C / Use / 0.0 / 100.0 / 0.0 / 0.0
Core / 0.0 / 100.0 / 0.0 / 0.0
Home Range / 0.0 / 100.0 / 0.0 / 0.0
Available / 0.0 / 100.0 / 0.0 / 0.0
D / Use / 9.7*** / 89.7*** / 0.0 / 0.6***
Core / 8.1 / .9 / 0.0 / 0.0
Home Range / 3.8 / 95.4 / 0.0 / 0.7
Available / 4.7 / 83.5 / 0.0 / 11.7
E / Use / 85.7*** / 11.3* / 0.0*** / 2.9
Core / 84.9 / 14.7 / .0 / 0.4
Home Range / 80.7 / 13.9 / 0.3 / 5.1
Available / 71.8 / 9.3 / 16.6 / 2.3
Use / 57.6*** / 39.4*** / <0.3*** / 2.8***
All groupsa / Core / 39.4 / 58.8 / 0.5 / 1.3
Home Range / 28.8 / 66.9 / 1.3 / 3.0
Available / 24.6 / 59.2 / 10.0 / 6.2

Use = percentage of 15-min scans (time) recorded in each forest type.

*, ***Use differed significantly from availability (p = 0.05, p = 0.001). Amount of time allocated to terra firme forest was greater than expected by chance both for all activities combined (A: c2 = 856.3, df = 3, p 0.001; B: c2 = 689.1, df = 3, p 0.001; D: c2 = 295.0, df = 2, p 0.001; E: c2 = 232.4, df = 3, p 0.001), and for foraging and feeding (A: c2 = 397.2, df = 3, p 0.001; B: c2 = 317.9, df = 3, p 0.001; D: c2 = 131.5, df = 2, p 0.001; E: c2 = 110.1, df = 3, p 0.001, data not shown here).

Core = percentage of core area (50% probability zone from kernel analysis) in each forest type.

Habitat composition of the core area of each of 4 groups with access to multiple habitat types differed from that expected based on composition of each group’s MCP (A: c2 = 1447.8, df = 3, p 0.001; B: c2 = 1210.6, df = 3, p 0.001; D: c2 = 318.2, df = 2, p 0.001; E: c2 = 279.8, df = 3, p 0.001).

Home Range = percentage of home range (95% probability zone from kernel analysis) in each forest type.

Available = percentage of group’s minimum convex polygon (MCP) in each forest type.

aRepresents the combined use (% of 15-min scans) of all study groups, within the aggregate (unioned) Core, Home Range, and MCP areas of all groups.

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