Habitat use byChiropotes satanas utahicki and syntopic platyrrhines in eastern Amazonia

Bobadilla, Urbano L.; Ferrari, Stephen F.

doi:10.1002/(sici)1098-2345(200003)50:3<215::aid-ajp4>3.0.co;2-u

Cited by 76 publications

(5 citation statements)

References 22 publications

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“…In addition to economic costs, reducing the area of liana forest patches might have ecological costs. For example, certain species of small primates show distinct habitat preferences for liana forest patches (Bobadilla & Ferrari 2000). On the other hand, by increasing the growth of individuals of commercial tree species and reducing liana density, liana cutting in liana forest patches may be a step towards bringing unproductive areas into active timber production.…”

Section: Discussionmentioning

confidence: 99%

Testing liana cutting and controlled burning as silvicultural treatments for a logged forest in the eastern Amazon

Gerwing

2001

Journal of Applied Ecology

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Summary1. In the eastern Brazilian Amazon, logged forests frequently include patches where liana density is particularly high. In these so-called liana tangles, competition from lianas is predicted to reduce tree growth significantly, thus effectively impeding future timber production. To begin to develop a silvicultural strategy for these patches, the impact of liana cutting and controlled burning on liana density, tree growth and tree regeneration in liana-dominated patches was investigated in a logged forest in the eastern Brazilian Amazon. 2. The two treatments (liana cutting and controlled burning) and a control were installed in 40 × 40-m plots in a randomized complete block design of six blocks. Treatments were conducted during October 1997, and tree diameter growth and mortality, canopy cover, regeneration and liana density were monitored over 2 years. 3. Mean mortality following burning was significantly higher for lianas (79%) than for trees (48%), as was the mean coppicing rate of top-killed stems (42% for lianas vs. 20% for trees). Coppicing combined with some recruitment from seed resulted in liana densities in the burned plots returning to 70% of the values in the control plots only 2 years post-treatment. 4. Canopy light transmittance, estimated from hemispherical canopy photographs taken at 1 m above the ground, increased significantly from c . 4% in controls to 8% in cut and 12% in burned treatments, and these differences persisted over the 2-year study period. 5. In the absence of silvicultural intervention, mean tree diameter increments were low (1·3 mm year -1 ), suggesting that the successional transition to higher stature forest was occurring very slowly. Each of the treatments resulted in a more than doubling of mean annual tree growth (3 and 2·8 mm year -1 for liana-cut and burned treatments, respectively). The treatments also significantly reduced the occurrence of trees that showed no growth over the study period, from 56% in controls to 30% in cut and 32% in burned treatments. 6. The results of this study suggest that although burning resulted in increased tree growth, rapid recolonization of surviving trees by lianas and the high vulnerability of burned stands to unwanted repeat burns are likely to cancel out any of the possible benefits of controlled burning as a silvicultural treatment for liana-dominated patches. Liana cutting, on the other hand, showed promise and its adoption as part of a larger strategy for the recuperation of the timber production potential of logged tropical forests seems warranted.

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Section: Discussionmentioning

confidence: 99%

Testing liana cutting and controlled burning as silvicultural treatments for a logged forest in the eastern Amazon

Gerwing

2001

Journal of Applied Ecology

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“…At a regional scale, the diversity and density of primates in natural forests, both in the Neotropics and elsewhere, are known to depend on primary forest productivity, precipitation, and climatic seasonality (Peres 1997; Pinto et al 2009). More locally, different monkey species typically occupy different forest microhabitats, preferring different forest strata or forest types of different structure, e.g., liana thickets (Bobadilla and Ferrari 2000; Mittermeier and van Roosmalen 1981; Wallace et al 1998). …”

Section: Introductionmentioning

confidence: 99%

Effects of Habitat Structure and Fragmentation on Diversity and Abundance of Primates in Tropical Deciduous Forests in Bolivia

et al. 2010

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Habitat structure and anthropogenic disturbance are known to affect primate diversity and abundance. However, researchers have focused on lowland rain forests, whereas endangered deciduous forests have been neglected. We aimed to investigate the relationships between primate diversity and abundance and habitat parameters in 10 deciduous forest fragments southeast of Santa Cruz, Bolivia. We obtained primate data via line-transect surveys and visual and acoustic observations. In addition, we assessed the vegetation structure (canopy height, understory density), size, isolation time, and surrounding forest area of the fragments. We interpreted our results in the context of the historical distribution data for primates in the area before fragmentation and interviews with local people. We detected 5 of the 8 historically observed primate species: Alouatta caraya, Aotus azarae boliviensis, Callithrix melanura, Callicebus donacophilus, and Cebus libidinosus juruanus. Total species number and detection rates decreased with understory density. Detection rates also negatively correlated with forest areas in the surroundings of a fragment, which may be due to variables not assessed, i.e., fragment shape, distance to nearest town. Observations for Alouatta and Aotus were too few to conduct further statistics. Cebus and Callicebus were present in 90% and 70% of the sites, respectively, and their density did not correlate with any of the habitat variables assessed, signaling high ecological plasticity and adaptability to anthropogenic impact in these species. Detections of Callithrix were higher in areas with low forest strata. Our study provides baseline data for future fragmentation studies in Neotropical dry deciduous forests and sets a base for specific conservation measures.

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“…1). For details on each site see Lopes and Ferrari (2000), Emídio-Silva (1998) and Bobadilla and Ferrari (1998).…”

Section: Resultsmentioning

confidence: 99%

Primates in a forest fragment in eastern Amazonia

Carvalho

2003

Neotrop. Primates

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Habitat use byChiropotes satanas utahicki and syntopic platyrrhines in eastern Amazonia

Cited by 76 publications

References 22 publications

Testing liana cutting and controlled burning as silvicultural treatments for a logged forest in the eastern Amazon

Testing liana cutting and controlled burning as silvicultural treatments for a logged forest in the eastern Amazon

Effects of Habitat Structure and Fragmentation on Diversity and Abundance of Primates in Tropical Deciduous Forests in Bolivia

Primates in a forest fragment in eastern Amazonia

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