Impact of ecological and social factors on ranging in western gorillas

@article{DoranSheehy2004ImpactOE,
  title={Impact of ecological and social factors on ranging in western gorillas},
  author={Diane M. Doran-Sheehy and David Greer and Patrice Mongo and Dylan M. Schwindt},
  journal={American Journal of Primatology},
  year={2004},
  volume={64}
}
We examined the influence of ecological (diet, swamp use, and rainfall) and social (intergroup interaction rate) factors on ranging behavior in one group of western gorillas (Gorilla gorilla gorilla) during a 16-month study. [...] Key Result The daily path length (DPL) of western gorillas was longer (mean=2,014 m) than that of mountain gorillas, and was largely related to fruit acquisition.Expand
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The tropical forests of the Congo Basin constitute biodiversity refuges that still hold large numbers of species, including endemic and endangered vertebrates. Along with several key species, the
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References

SHOWING 1-10 OF 74 REFERENCES
Seasonality in the Ecology and Life Histories of Mountain Gorillas (Gorilla gorilla beringei)
  • D. Watts
  • Biology
    International Journal of Primatology
  • 2004
TLDR
Long-term data on mountain gorilla groups show that mortality rates and risk of respiratory infections vary directly with rainfall, and this relationships are probably causal and may be mediated through thermoregulatory stress.
Ecological Constraints on the Foraging Effort of Western Gorillas (Gorilla gorilla gorilla) at Bai Hoköu, Central African Republic
  • M. Goldsmith
  • Geography
    International Journal of Primatology
  • 2004
Recent studies demonstrate that western lowland gorillas incorporate much more fruit into their diet than Virunga mountain gorillas do. Very little is known, however, about how the frugivorous
Strategies of habitat use by mountain gorillas.
  • D. Watts
  • Geography, Medicine
    Folia primatologica; international journal of primatology
  • 1991
Patterns of home range use by a mountain gorilla group are examined here in relation to variation in food abundance and quality, diet quality and rainfall, to interactions between different social
Gorilla ecology and behavior
TLDR
Gorillas provide a unique opportunity to reevaluate proposed models of ecological influences on social organization in African apes and assess how changes in ecology influence this balance.
Western lowland gorilla diet and resource availability: New evidence, cross‐site comparisons, and reflections on indirect sampling methods
TLDR
The densities of these two species are similar across sites for which data are available, in spite of major differences in forest structure, suggesting they may be key species in determining gorilla density.
Habitat use and resource availability in baboons
TLDR
Multiple regression analysis of total time spent in each quadrat revealed that apparent preferences for particular vegetation zones were a result of the spatial coincidence of these zones with sleeping sites and waterholes, emphasizing the importance of controlling for confounding factors in studying the determinants of habitat selection.
Movement patterns of a group of free‐ranging mountain gorillas (Gorilla gorilla beringei) and their relation to food availability
  • A. Vedder
  • Geography, Medicine
    American journal of primatology
  • 1984
TLDR
Analysis of yearly patterns and monthly changes in ranging give supporting evidence for the prediction that mountain gorilla ranging patterns are influenced by the distribution and abundance of foods.
Long-Term Habitat Use by Mountain Gorillas (Gorilla gorilla beringei). 1. Consistency, Variation, and Home Range Size and Stability
  • D. Watts
  • Geography
    International Journal of Primatology
  • 2004
Mountain gorillas are highly folivorous. Food is abundant and perennially available in much of their habitat. Still, limited research has shown that single gorilla groups heavily used areas where
Western lowland gorillas (Gorilla gorilla gorilla) as seasonal frugivores: Use of variable resources
  • M. Remis
  • Biology, Medicine
    American journal of primatology
  • 1997
TLDR
The gorillas studied at Bai Hokou, Central African Republic, between August 1990 and October 1992 consumed 239 kinds of foods from 138 species of plants and invertebrates, including the fruits of 77 species, which shaped the foraging and ranging patterns of western lowland gorillas.
Home Range and Frugivory Patterns of Mountain Gorillas in Bwindi Impenetrable National Park, Uganda
Mountain, western, and Grauer's gorillas exhibit broad differences in ecological patterns with western gorillas eating more fruit and having larger home ranges than their largely folivorous
...
1
2
3
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5
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