Efeitos da exploração madeireira de baixo impacto sobre uma comunidade de aves de sub-bosque na Floresta Nacional do Tapajós, Pará, Brasil

Henriques, Luiza Magalli Pinto; Wunderle, Joseph M.; Oren, David C.; Willig, Michael R.

doi:10.1590/s0044-59672008000200010

Cited by 14 publications

(12 citation statements)

References 35 publications

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“…Our results suggest that environmental variables such as altitude and canopy openness can affect woodcreeper assemblages, and that these variables are related to landscape history (Cintra & Naka 2012), intensity of forest management (Henriques et al 2008), forest structure and plant species composition (Nur et al 2008). Most bird species in Amazonia are resident and sedentary (Cintra & Naka 2012), and the variation in woodcreeper assemblage is more likely to be related to local changes than biogeographic or regional effects.…”

Section: Discussionmentioning

confidence: 81%

“…Guilherme & Cintra (2001) found no effects of intensity of selective logging on bird community in Central Amazon, however Azevedo-Ramos et al (2006) observed an increase in species richness of invertebrates and birds soon after disturbance. Henriques et al (2008) found obligate army ant followers and arboreal insectivorous birds did not show differences between logged and control forest, but other species guilds were negatively influenced by logging demonstrating that disturbance affects different guilds differently.…”

Section: Introductionmentioning

confidence: 98%

“…However, determining the importance of habitat components has not been an easy task, due to the heterogeneity of the rain forest, and the variety of anthropogenic changes, such as different kinds of selective logging, deforestation and/or forest reduction (Asner et al 2005, Holmes et al 2002). These changes can affect forest structure (Costa et al 2002) and, consequently, induce different responses from the bird assemblage (Henriques et al 2008, Johns 1991, Laurance 2004).…”

Section: Introductionmentioning

confidence: 99%

“…Selective logging can affect various components of the forest such as canopy cover, light availability, plant density (Costa et al 2002), leaf-litter production (Kartawinata et al 2001), food availability (Woodcock et al 2013) and soil chemical properties (Olander et al 2005). Furthermore, effects may also depend on the interaction with time elapsed since selective logging, which changes the forest structure and floristic composition, thereby changing species richness, abundance and frequency of use by birds (Aleixo 1999, Guilherme & Cintra 2001, Henriques et al 2008, Jayapal et al 2009). Therefore, it is essential to determine how habitat structural components interact with the bird assemblages and what mechanisms affect the bird distribution in tropical rain forests (Barros & Cintra 2009) in order to understand the dynamics of these assemblages, and their likely response to impending anthropic changes.…”

Section: Introductionmentioning

confidence: 99%

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Habitat associations of woodcreeper (Aves: Dendrocolaptidae) assemblage in selectively logged areas of Southern Amazonia

et al. 2015

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Abstract:The Brazilian Amazon rain forest has lost c. 17% of its originally forested portion, due to deforestation and selective logging. Forest degradation caused by logging contributes to loss of animal species that require specialized habitats to survive, such as woodcreepers that inhabit understorey areas. Habitat associations of woodcreeper species can be important for identifying species that have restricted distribution and/or habitat specialization. Our study investigates the effects of spatial variation in forest structure and some landscape features (canopy openness, altitude, distance to stream and exploited basal area) on the abundance and composition of woodcreeper assemblage in selectively logged tropical forests in Southern Amazonia. We used mist-nets and points count to quantify the composition and abundance of woodcreepers in 32 plots in three sites. Plots were spatially arranged in PPBio LTER sites (long-term ecological research plots, systematically spaced at 1-km intervals) in Southern Amazonia. A total of 240 individuals (captured, observed and/or heard) belonging to 11 woodcreeper species were detected. Mantel tests showed that there is no spatial autocorrelation among woodcreeper assemblage and distance between plots. Altitude and canopy openness were significantly associated with the composition of the woodcreeper assemblage. Altitude was negatively associated with species richness, and the abundance of the two dominant species (Glyphorynchus spirurus and Xiphorhynchus elegans). The negative relationship with canopy openness suggests that woodcreeper assemblages that inhabit understorey are likely to be indirectly affected by selective logging which reduces canopy cover. The selective logging indirectly changes bird species assemblages, and depending on the intensity, may result in the local extinction of some insectivorous species. Short- and long-term studies addressing different intensities of selective logging are needed to determine the impacts on the bird species and forest structure.

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Section: Discussionmentioning

confidence: 81%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Habitat associations of woodcreeper (Aves: Dendrocolaptidae) assemblage in selectively logged areas of Southern Amazonia

et al. 2015

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“…As 1997 (p = 0,0033), 2000 (p = 0,0003), 2003 (p < 0,0001) e a não explorada (p < 0,0001). Barlow et al (2006) e Henriques et al (2008) no Brasil. Este tipo de resposta por parte dos frugívoros de dossel também foi encontrada em pesquisas desenvolvidas nas florestas da Malasya (JONHS, 1989) e de Uganda (OWIUNJII, 2000(OWIUNJII, , 2001).…”

Section: Composição Da Avifaunaunclassified

Efeitos do manejo florestal na estrutura da avifauna na floresta Amazônica de Paragominas (Pará)

Cardona¹

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Effects of the forest management on birds structure in Paragominas Amazonian forest (Para) Para is the most important state from the Amazon region in wood activities. It has the greatest sawmill of the region and produce more than 50% of the Brazilian wood. The Easte zone of the State is responsible of the 45% of wood production. In this zone is located Paragominas, a town where 56% of the urban human population depends directly on the wood industries to survive. This town is into the endemism area called Belem, whose forest loss is almost 67,48%. Historically wood explorations were made with conventional techniques that produced damages in the forest structure and into the soil, and have direct impacts on the forest fauna. In the last ten years they were established some technique guidelines to promove forest management in terra firme forests of the Brazilian Amazon, recommended by the Forest Stewardship Council (FSC) to all the exploration activities in native forests. The principal aim of this study was to assess the effects of forest management, including reduced impact logging, in areas that were logged in different seasons (1997, 2000, 2003, 2006 and 2009) and an unlogged area, on the community of birds, comparing richness, species and guilds abundance, and other ecological groups that are vulneravel to the natural and antropic disturbances. Birds were used because of its importance in forest ecological process like pollination, and seed dispersion and predation. Fieldwork was made in dry season (October 2010) and rain season (abril 2011) by direct observations in pointcounts into 1 km transects; six transects were sampled with pointcounts at each 200 m with a total of 36 pointcounts per area. Information analysis demonstrate that: a) were registered 235 species into the all six forest management areas; b) there were significative differences in species richness between forest management areas and sampled seasons; c) species richness and guild abundances had their major value in the area logged in 2000, contrasting with the unlogged area that had lower values in this items; d) species of the forest interior, cavity nesters, and understorey ant follower insectivores, insectivores and nectarivores were the most affected ecological groups by the forest management, specially in the unlogged area that had pre-logged activities and the area logged in 2003 that was affected by natural disturbances before fieldwork; e) Ecological groups named above that were the most affected by the forest management could and should be used as indicators in monitoring programs during the forest management steps, principally pre-logging, logging and pós-loggingin the Rio Capim Forest Management Area.

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Idiosyncratic responses of Amazonian birds to primary forest disturbance

et al. 2015

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Efeitos da exploração madeireira de baixo impacto sobre uma comunidade de aves de sub-bosque na Floresta Nacional do Tapajós, Pará, Brasil

Cited by 14 publications

References 35 publications

Habitat associations of woodcreeper (Aves: Dendrocolaptidae) assemblage in selectively logged areas of Southern Amazonia

Habitat associations of woodcreeper (Aves: Dendrocolaptidae) assemblage in selectively logged areas of Southern Amazonia

Efeitos do manejo florestal na estrutura da avifauna na floresta Amazônica de Paragominas (Pará)

Idiosyncratic responses of Amazonian birds to primary forest disturbance

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