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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Neotropical Primates: Aspects of Habitat Usage, Population Density, and Regional Distribution in La Macarena, Colombia
Neotropical Primates: Aspects of Habitat Usage, Population Density, and Regional Distribution in La Macarena, Colombia
Pages 70-78
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From page 70... ...
Klein INTRODUCTION While searching between July and November 1967 for a suitable area in which to make a year-long intensive study of spider monkey social organization, we collected limited amounts of information on the distribution of primate taxa in selected parts of La Macarena National Park, Colombia, and a few adjoining areas. These distributional data and our intensive observations of feeding behavior and habitat usage made at a single location form the basis for several hypotheses about regional primate distribution and density.
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From page 71... ...
We feel that further delineation of some of these taxonomically correlated patterns of habitat usage may explain some of the larger-scale anomalies of taxonomic diversity and population densities noted in several of the areas explored outside the specific study site.
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From page 72... ...
Although this botanical assemblage was important for spider monkeys throughout the year, marked and radical fluctuations in usage occurred. For example, although we spent much time looking for spider monkeys along the higher creek beds in October and November 1968, when most of the rest of the forest was flooded and inaccessible, we logged less than 10 percent of total observation time with Ateles in this habitat.
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From page 73... ...
of the study site and were inundated from 5 to 8 months during 1967 and 1968. Although Ateles belzebuth was neither seen nor followed to these relatively homogenous Cecropia stands, Alouatta seniculus and Saimiri sciureus were.
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From page 74... ...
Woolly monkeys were seen on the south bank from Angostura II as far upstream as the forested environs of La Macarena village and frequently and regularly in the forest across the river from our campsite. Yet they were neither seen nor heard on the north bank between the two Angosturas.
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From page 75... ...
were 22 percent adult males, 41 percent adult females, 20 percent juveniles, and 17 percent infants; for groups of A seniculus on a ranch in Guarico, Venezuela, 29 percent adult and subadult males, 33 percent adult and subadult females, 21 TABLE 1 Estimated Study Site Population Densities, Group Size and Number of Groups Present Estimated Number of Estimated Population Range of Groups Utilizing 780 ha Density per Square Mile Group Size" (3 sq miles)
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From page 76... ...
Simply counting observed groups of spider monkeys was of little value in determining either population density or total group size. Groupings of spider monkeys, in comparison to other sympatric primate taxa, were markedly labile and flexible.
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From page 77... ...
NEED FOR CONSERVATION The effects of human activities on nonhuman primate populations in La Macarena may be of interest. We made no specific investigations of this subject, but it FIGURE 3 A
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From page 78... ...
1968. Reports and recommendations on the Sierra Nevada de Santa Marta National Park, the Isla Salamanca National Park, the Tairona National Park, the La Macarena National Reserve.
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