O desflorestamento ao longo da rodovia BR-174 (Manaus/AM - Boa Vista/RR)

Pinheiro, Eduardo da Silva

doi:10.1590/s1982-45132011000300011

Cited by 3 publications

(3 citation statements)

References 2 publications

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“…The DFR and the BDFFP are roughly 50 km apart from each other, and, although large stretches of old-growth forests between them still persist, the highways BR-174 and AM-010 and several small roads disconnect the two reserves. The construction of the two main roads began in the late 1970s, but paving was completed only in the late 1990s (Rodrigues & Pinheiro, 2011). Since then, the area deforested in the Manaus region associated with these roads has increased 200%, mainly due to urban growth (Rodrigues & Pinheiro, 2011).…”

Section: Study Areamentioning

confidence: 99%

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Genetic diversity and spatial structure of the Rufous‐throated Antbird (Gymnopithys rufigula), an Amazonian obligate army‐ant follower

Menger

Henle

Magnusson

et al. 2017

Ecology and Evolution

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Amazonian understory antbirds are thought to be relatively sedentary and to have limited dispersal ability; they avoid crossing forest gaps, and even narrow roads through a forest may limit their territories. However, most evidence for sedentariness in antbirds comes from field observations and plot‐based recapture of adult individuals, which do not provide evidence for lack of genetic dispersal, as this often occurs through juveniles. In this study, we used microsatellite markers and mitochondrial control‐region sequences to investigate contemporary and infer historical patterns of genetic diversity and structure of the Rufous‐throated Antbird (Gymnopithys rufigula) within and between two large reserves in central Amazonia. Analyses based on microsatellites suggested two genetically distinct populations and asymmetrical gene flow between them. Within a population, we found a lack of genetic spatial autocorrelation, suggesting that genotypes are randomly distributed and that G. rufigula may disperse longer distances than expected for antbirds. Analyses based on mitochondrial sequences did not recover two clear genetic clusters corresponding to the two reserves and indicated the whole population of the Rufous‐throated Antbird in the region has been expanding over the last 50,000 years. Historical migration rates were low and symmetrical between the two reserves, but we found evidence for a recent unilateral increase in gene flow. Recent differentiation between individuals of the two reserves and a unilateral increase in gene flow suggest that recent urban expansion and habitat loss may be driving changes and threatening populations of Rufous‐throated Antbird in central Amazonia. As ecological traits and behavioral characteristics affect patterns of gene flow, comparative studies of other species with different behavior and ecological requirements will be necessary to better understand patterns of genetic dispersal and effects of urban expansion on Amazonian understory antbirds.

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Section: Study Areamentioning

confidence: 99%

“…The construction of the two main roads began in the late 1970s, but paving was completed only in the late 1990s (Rodrigues & Pinheiro, 2011). Since then, the area deforested in the Manaus region associated with these roads has increased 200%, mainly due to urban growth (Rodrigues & Pinheiro, 2011).…”

Section: Study Areamentioning

confidence: 99%

Genetic diversity and spatial structure of the Rufous‐throated Antbird (Gymnopithys rufigula), an Amazonian obligate army‐ant follower

Menger

Henle

Magnusson

et al. 2017

Ecology and Evolution

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“…At the time, in the midst of the context, a peacekeeping operation was organized, considering that the natives in defending their lands attacked government officials, for example. The conflicts reduced from two thousand to six hundred Indigenous, from those lands (17) .…”

Section: Figure 2 -Integrated Health Actionmentioning

confidence: 98%

Indigenous health and nursing in Roraima in the 1970s

et al. 2019

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Objective: To analyze the strategies undertaken by the government to address the health problem in Boa Vista/Roraima. Method: A study using the microhistory approach, with documentary sources from journalistic material of the 1970s through the triangulation technique: texts, images and context, with analysis from the perspective of the Social World Theory. Results: It was evidenced that the strategies undertaken by the government occurred in favor of the exploration of isolated areas in Roraima that demanded settlement processes, construction of villages and a highway to enable the interconnection of the state with other regions of Brazil, with a smoke screen symbolic effect produced by nurses on indigenous health. Conclusion: There was governmental manipulation, when the symbolic power was unveiled, making it possible to see and believe that nursing needs to guide political issues rather than being ruled.

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Deforestation Dynamics in the Nova Bonal Sustainable Development Project, Acre, Brazil

et al. 2019

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This study assessed the dynamics of the land use and cover changes, deforestation trends and the current status of the Legal Forest Reserves (LFR) and Permanent Protected areas (PPA) in the Nova Bonal Sustainable Development Project (SDP) between 1997-2014. Deforestation datasets and fieldwork were used in this analysis. Our results indicate that there was no trend in the estimated deforestation rate dataset for the SDP, but there was a decreasing trend in deforestation rates within its 10-km buffer zone, most likely due to the scarcity of native forests in that area. The negative environmental area balance of PPA and LFR were observed within the 10-km buffer zone of the SDP. Finally, we conclude that the alternative land and forest uses enforced within the SDP are more effective for environmental conservation than the commonly adopted land uses, especially pastures adopted by conventional colonization located around it.

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O desflorestamento ao longo da rodovia BR-174 (Manaus/AM - Boa Vista/RR)

Abstract: Researches indicate that deforestation in the Amazon is associated with roads constructions

Cited by 3 publications

References 2 publications

Genetic diversity and spatial structure of the Rufous‐throated Antbird (Gymnopithys rufigula), an Amazonian obligate army‐ant follower

Genetic diversity and spatial structure of the Rufous‐throated Antbird (Gymnopithys rufigula), an Amazonian obligate army‐ant follower

Indigenous health and nursing in Roraima in the 1970s

Deforestation Dynamics in the Nova Bonal Sustainable Development Project, Acre, Brazil

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