Neotropical Primates Field Studies and Conservation : Proceedings of a Symposium on the Distribution and Abundance of Neotropical Primates (1976) / Chapter Skim
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Primate Populations in Chiriqui, Panama
Primate Populations in Chiriqui, Panama
Pages 20-31
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From page 20... ...
Observations on the forests, troop size, and behavior were made with the naked eye and binoculars, then recorded on tape recorders or file cards, and later transcribed into field notebooks. The field procedures used are described in greater detail elsewhere (Baldwin and Baldwin, 1971, 1972.
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From page 21... ...
The Federal Register has placed Saimiri sciureus oerstedii on the endangered species list (Russell, 1970) , but in the areas of Chiriqui we sampled Cebus were more endangered.
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From page 22... ...
The forests that were investigated are indicated by dots. The four habitat zones designated by cross-hatching, from the least line density to the most, are areas over 200-m elevation, inland forests under 200 m, Burica Peninsula, and marshy coastal regions.
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From page 23... ...
(1970) noted, it is important for the scientific community to be aware of the various causes behind the nearly global destruction of primate resources: We believe there is a danger of undue emotionalism about primate conservation before adequate field data are available.
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From page 24... ...
It is doubtful that local hunting was responsible for much of the recent decline in the primate populations in southwestern Chiriqui, but hunting has probably affected Cebus the most. The destruction of large expanses of forest habitat for agricultural expansion and the use of pesticides have been the main factors in the reduction of primate populations in Chiriqui.
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From page 25... ...
Many forests were isolated by pastures and cultivated fields with few forests found near cities, towns, and the larger roads. The largest and most continuous tracts of forest were located along streams, rivers, and in less-accessible areas.
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From page 26... ...
On the Burica Peninsula and along the marshy coastlines, the Saimiri troops were more common and traveled in larger groups of 15-30 animals with the largest troop sizes occurring in the larger forests. If the present rate of agricultural expansion on the Burica Peninsula and in the marshy coastal forests continues, the primate populations and troop sizes will undoubtedly be diminished; and this situation will resemble the conditions in the inland lowlands.
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From page 27... ...
of Animals Range Size Exclusive Range Cebus Hectares Acres Hectares Percent One troop 27-30 32-40 80-100 -- -- Saimiri Troop A 23 17.5 43.5 1.8 10.3 Troop B 27 24-40 60-100 -- -- Ahuatta" Planta 20 6.3 15.7 0.0 0.0 Boca IK 6.6 16.5 0.0 0.0 27-4-2 27 6.9 17.2 0.0 0.0 Pata 16 3.2 8.0 0.3 9.4 Saco 16 3.2 8.0 0.28 8.8 7-2-0 7 -- -- -- -- Cola 28 3.5 8.7 1.2 34.3 L.D. 19 4.2 10.5 -- -- Solitaries 6 " Three additional troops of Ahuatta used the 20-ha study site, but we were unable to collect sufficient data on them to obtain accurate troop counts.
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From page 28... ...
The high degree of separation of most of the forests in southern Chiriqui in 1970 would suggest that primate populations living more than 1.5-2.5 km (1-1.5 miles) inland from the marshy coastal forests probably could not have reached the Barqueta study forest unless they lived along the Escarrea River, which parallels a forest for several miles from the coast.
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From page 29... ...
869) point out: "Not surprisingly the arboreal folivores are the most numerous of larger forest mammals, sometimes accounting for 30-40 percent of the arboreal mammalian biomass." The higher percentage at Barqueta probably reflects the high population density.
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From page 30... ...
SUMMARY In August 1968 and December 1970, the authors surveyed primate populations in 71 forested areas in the province of Chiriqui in southwestern Panama. Troops of squirrel monkeys (Saimiri sciureus oerstedii)
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From page 31... ...
1968. The social behavior of adult male squirrel monkeys (Saimiri sciureus)
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