Interspecific interactions between primates, birds, bats, and squirrels may affect community composition on Borneo

Area of Science:

• Ecology
• Community Ecology
• Primate Ecology

Background:

• Primate community ecology traditionally assumes interactions are primarily with other primates.
• Understanding sympatric primate coexistence is a long-standing ecological question.

Purpose of the Study:

• To test community assembly hypotheses for primates in isolation versus mixed-vertebrate communities.
• To determine if including non-primate taxa strengthens ecological signals in community structure analyses.
• To examine species presence/absence determinants and community structure in Borneo's vertebrate communities.

Main Methods:

• Tested for checkerboard distributions, guild proportionality, and Fox's assembly rule.
• Compared analyses of primate-only communities with communities including birds, bats, and squirrels.
• Controlled for habitat effects in statistical analyses.

Main Results:

• Found strong support for checkerboard distributions, especially when combining taxonomic groups.
• Observed guild proportionality in some communities.
• Did not find significant support for Fox's assembly rule across examined communities.

Conclusions:

• Vertebrate community structure is ecologically determined, not random, suggesting interspecific interactions shape species composition.
• Primates' ecological interactions extend beyond their own taxonomic group.
• Primatologists should incorporate non-primate taxa into ecological studies to better understand primate community dynamics.