Population Density and Ecological Traits of Highland Woolly Monkeys at Cueva de los Guacharos National Park, Colombia

Vargas, S. A.; León, Julián; Ramírez, Mónica A.; Galvis, Nelson; Cifuentes, Edgar; Stevenson, Pablo R.

doi:10.1007/978-1-4614-8175-1_5

Cited by 12 publications

(23 citation statements)

References 31 publications

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“…We only used the temperature data from March to April and from August to September in the data analysis, which correspond to the periods of transition between dry and wet months (Vargas et al . ).…”

Section: Methodsmentioning

confidence: 97%

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Plant composition associated with environmental gradients in tropical montane forests (Cueva de Los Guacharos National Park, Huila, Colombia)

Prada

Stevenson

2016

Biotropica

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Niche differentiation among tropical forest plants can generate species turnover along gradients of soil, topography, climate, and land use history. In this study we explore the relative importance of these variables as drivers of floristic composition in Cueva de Los Guacharos National Park. We established twenty 0.1-ha plots, within which trees, lianas, and shrubs (diameter ≥ 2.5 cm) were censused. We selected plot locations in primary and disturbed forests, and we measured topography and soil variables. Despite their structural similarity, primary and disturbed forests differed floristically, and also differed in environmental variables measured. A NMDS ordination showed that variation in the floristic composition across plots is highly correlated to the exchangeable acidity, elevation, temperature, and magnesium availability. Variance partitioning analysis shows that together spatial and environmental variables explain 24.2 percent of the variation in species composition. 'Pure environmental' variables were more important in explaining compositional variability than 'pure spatial' processes (9.8% and 1.4%, respectively). Residual variance may be attributed to stochastic process or non-measured biotic effects.Abstract in Spanish is available with online material.

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Section: Methodsmentioning

confidence: 97%

“…The annual rainfall in the field station facilities is 3100 mm, although for the study period (2010) there was an estimated annual rainfall of 1790 mm (Vargas et al . ) and an average temperature of 16°C (Minambiente ).…”

Section: Methodsmentioning

confidence: 99%

Plant composition associated with environmental gradients in tropical montane forests (Cueva de Los Guacharos National Park, Huila, Colombia)

Prada

Stevenson

2016

Biotropica

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“…The elevation at the study site ranges from 1,700 to 2,600 m above sea level. The home range of the study group included sub-Andean pristine and old secondary forests located between 1,800 and 2,100 m above sea level [Vargas et al, 2014].…”

Section: Study Sitementioning

confidence: 99%

“…The role of arthropod abundance in seasonal dietary variation is however still unknown. For this reason, we studied a population located in Cueva de Los Guácharos National Park, Colombia, which is known for having the highest arthropod consumption (44%) in their dietary composition during the year [Vargas et al, 2014].…”

Section: Introductionmentioning

confidence: 99%

Influence of Arthropod and Fruit Abundance on the Dietary Composition of Highland Colombian Woolly Monkeys (Lagothrix lagotricha lugens)

Fonseca

Cruz

Acosta-Rojas

et al. 2019

IJFP

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The woolly monkey’s (Lagothrix lagotricha) diet consists primarily of fruits, and for some populations fruit availability predicts its frequency in the diet. Woolly monkeys also eat new leaves, flowers, seeds and arthropods, but it is unclear whether arthropods are consumed in proportion to their environmental availability. We tested the hypothesis that arthropod consumption by woolly monkeys depends on availability. We studied a group of woolly monkeys for 10 months in 2013–2014, in Cueva de los Guácharos National Park, Colombia, in order to test the hypothesis that arthropod consumption by woolly monkeys depends on availability. We carried out surveys of plant phenology each month for 10 months to estimate fruit productivity, and every 2 months we also surveyed 3 canopy substrates (leaves, mosses and bromeliads) to quantify variation in arthropod biomass. During this time, we also quantified the diet of a woolly monkey group. The items most consumed were fruits (60%), followed by arthropods (24%), leaves (13%) and miscellaneous other items (3%). Arthropod biomass in the canopy did not vary considerably over the 10 months (0.014–0.037 g/g substrate) but was lower at the end of the second rainy season. A positive correlation was found between availability and entomophagy, but only when arthropods were relatively abundant. We did not find a relationship between arthropod and fruit feeding frequencies. Our results indicate that arthropods are prevalent in the diet of the woolly monkeys due to their abundance in Andean forest canopies.

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“…This suggests that, in times of fruit scarcity, energetic limitations reduce the possibility of performing this type of energy-demanding activities (Stevenson et al 1994;Di Fiore and Rodman 2001), especially those that do not directly affect reproductive success, such as play. However, this pattern is less clear in other studied populations (Gonzalez and Stevenson 2010;Zárate and Stevenson 2014;Vargas et al 2014). Even though these differences could be due to the different ecological conditions, it is also clear that adequate ways to quantify the variables of interest require extensive sampling.…”

Section: Social and Ecological Characteristics Of Woolly Monkeysmentioning

confidence: 84%

Social Interactions and Proximal Spacing in Woolly Monkeys: Lonely Females Looking for Male Friends

Stevenson

Zárate

Ramírez

et al. 2015

Dispersing Primate Females

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Population Density and Ecological Traits of Highland Woolly Monkeys at Cueva de los Guacharos National Park, Colombia

Cited by 12 publications

References 31 publications

Plant composition associated with environmental gradients in tropical montane forests (Cueva de Los Guacharos National Park, Huila, Colombia)

Plant composition associated with environmental gradients in tropical montane forests (Cueva de Los Guacharos National Park, Huila, Colombia)

Influence of Arthropod and Fruit Abundance on the Dietary Composition of Highland Colombian Woolly Monkeys (Lagothrix lagotricha lugens)

Social Interactions and Proximal Spacing in Woolly Monkeys: Lonely Females Looking for Male Friends

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