Abstract # 28:

Scheduled for Saturday, August 26, 2017 06:00 PM-08:00 PM: (National Ballroom AB) Poster Presentation


UNEXPECTEDLY HIGH PRIMATE SPECIES RICHNESS IN IGAPO FOREST IN AMAZONIAN PERU

J. Chism and R. L. Jackson
Winthrop University, Dept. of Biology, Rock Hill, SC 29733, USA
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Higher primate species richness in Amazonia has been hypothesized for unflooded (terra firme) forests than for várzea forests, seasonally flooded by nutrient-rich white-water rivers, and igapó forests, seasonally flooded by nutrient-poor black-water rivers. Ability to occupy igapo has been predicted to depend on primates’ ability to migrate seasonally into terra firme habitat. We tested this proposed relationship in primate species richness among the three forest types with survey data collected at sites in the Área de Conservacion Regional Comunal Tamshiyacu Tahuayo (ACRCTT) in northeastern Peru in 2005 and 2015. We recorded 12 sympatric primate species in igapo forest compared with 9 primate species in terra firme and varzea. A 13th species, Lagothrix poeppigii, reported but not encountered during the survey, and a second Callicebus species may also occur in igapo at this location. Our observations suggest that, as predicted by other researchers, the unexpectedly high species richness in igapo at this site may be due to the ability of at least some primate species to migrate into terra firme habitat during periods of food (probably specifically fruit) scarcity. While this level of species richness equals levels previously reported for primates at terra firme sites elsewhere in Amazonia (in Brazil), the ACRCTT site may have the highest species richness yet recorded for igapo forest. This indicates that conservation efforts should be directed at igapo forest.