A sustentabilidade hídrica na bacia do rio Guamá, Amazônia Oriental/Brasil

Rocha, Nívia Cristina Vieira; Lima, Aline Maria Meiguins de

doi:10.14393/sn-v32-2020-45694

Cited by 7 publications

(9 citation statements)

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“…Duarte et al ( 2020) also recorded high rates of deforestation in CUs in the lower Acre River, Western Amazon. These changes in land use and coverage, plus the hyperdinamism of urban and periurban watersheds, increase the vulnerability to sediment transport, and consequently to the occurrence of erosion and silting of stretches of the drainage network (Serrão et al, 2019;Rocha and Lima, 2020).…”

Section: Resultsmentioning

confidence: 99%

Forest fragmentation and its potential implications for the management of the Tarumã-Açu River basin, Central Amazon, Brazil

Costa

Rodrigues

Silva

et al. 2021

Rev. Bras. Ciênc. Ambient. (Online)

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The intensification of deforestation and the consequent fragmentation of the natural landscape in urban and periurban watersheds affect the entire eco-hydrological system, increasing the need to understand how these changes can affect their sustainability. In this sense, the present study evaluated the potential implications of forest fragmentation for the management of the Tarumã-Açu basin, based on the characterization of the structural and functional patterns of the landscape. For this, we mapped and categorized the basin’s forest fragments, based on the supervised classification (Bhattacharyya Method) of Landsat/OLI image, and, subsequently, we calculated the landscape metrics (area, density and size, edge, form, core, isolation and connectivity). The metrics showed a very fragmented landscape, especially in the region of the basin's low course, which concentrates the smallest, most dispersed, and vulnerable fragments even in conservation units. The headwater region, on the other hand, has the largest patches, with a large amount of central area and high structural and functional connectivity, which are fundamental for the sustainability of the basin and, therefore, deserve attention and prioritization by managers. The results offer important subsidies and unpublished data that can contribute to elaboration of the basin’s management plan and for the definition of conservation and restoration strategies of the forest remnants, indicating priority areas for the implementation of these actions.

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Section: Resultsmentioning

confidence: 99%

Forest fragmentation and its potential implications for the management of the Tarumã-Açu River basin, Central Amazon, Brazil

Costa

Rodrigues

Silva

et al. 2021

Rev. Bras. Ciênc. Ambient. (Online)

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“…This municipality is in the Hydrographic Region of the Atlantic Coast -Northeast. Part of its territory is within two relevant hydrographic basins in the State of Pará, namely the Guamá River (Rocha & Lima, 2020) and the Caeté River (Dias & Cirilo, 2018). The rivers Caeté, Guamá, Peritoró, and Sujo make up the drainage network present in the municipality's territory.…”

Section: Study Areamentioning

confidence: 99%

“…Understanding the lack of availability (physical, infrastructure, or institutional), the qualitative and economic scarcity of water is necessary for the formulation of public policies at national, state, and local scales (Narzetti & Marques, 2021). In recent years, the commitment of several researchers to measure the sustainability of water in the Brazilian Amazon region has been observed (Rego et al, 2013;Brito et al, 2020;Rocha & Lima, 2020) through the development of instruments for assessment based on sustainability indicators.…”

Section: Introductionmentioning

confidence: 99%

“…Previous studies in the Amazon region of Brazil have used multi-criteria decision analysis (MCDA) techniques to assess water sustainability at different spatial scales, such as watershed (Rocha & Lima, 2020), city (Rego et al, 2013), and island (Brito et al, 2020). However, the studies cited did not integrate the MCDA and geographic information system (GIS) to analyze the water situation for a spatial scale of rural communities.…”

Section: Introductionmentioning

confidence: 99%

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Application of the Rural Water Sustainability Index (RWSI) in Amazon rural communities, Pará, Brazil

Crispim

Fernandes

2022

Water Policy

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This paper proposes an adaptation of the Rural Water Sustainability Index (RWSI) to the Brazilian Amazon region. Policymakers can use this tool to identify areas of water stress and develop actions to guarantee water access to rural communities. Multi-criteria analysis and a geographical information system were integrated to incorporate various indicators and produce maps displaying spatial water sustainability levels in rural communities. The RWSI was employed on a case study at 16 rural communities in Santa Luzia do Pará, Pará, Brazil. In total, 380 closed and structured interviews were conducted with people living in the area to collect local information for the model application. The results showed a varied spatial behavior between rural communities of Santa Luzia do Pará, with similarities and differences based on the overall condition of water resources (final index values). Half of the locations had ‘Poor’ or ‘Poor-Medium’ water quality. The remaining sample obtained scores ranging from ‘Medium-Good’ to ‘Good’ water sustainability. RWSI’ scores varied widely (from 5.7 to 6.5) among the communities. It was also found that localities more distant from surface water presented more water stress.

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“…The RGHB is located in a region of ancient occupation that underwent intense deforestation due to the construction of a railroad in the late 19th century, its effects being intensified with the opening of the Belém-Brasília highway (Silva and Silva, 2008). The RGHB is highly urbanized, with extremely concentrated economic activities, poverty increase, non-resolution of social problems, and low sustainability (Rocha and Lima, 2020).…”

Section: Introductionmentioning

confidence: 99%

Spatial-temporal evolution of landscape degradation on the Guamá River Basin, Brazil

Silva

Vieira

Thales

2021

Rev. Bras. Ciênc. Ambient.

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The goal of this study was to determine the anthropization evolution of the Guamá river basin in the years 2000, 2008 and 2018 by means of the Anthropic Transformation Index. Land use and cover maps were obtained from two databases, Project Mapbiomas (Brazilian Annual Land Use and Land Cover Mapping Project) and PRODES (Project for the Satellite Monitoring of the Brazilian Amazon Forest). The main classes defined in the mapping process are: forest, natural non-forest vegetation, agriculture and livestock farming, secondary vegetation, urban infrastructure, water and others. Secondary vegetation was considered as the area where the forest classes of Mapbiomas intersects with the deforested areas of PRODES, as determined by the map algebra operator. The expansion of agriculture and livestock farming achieved an increase of about 10%, while the forest was reduced in almost 10%. The Guamá river basin obtained an Anthropic Transformation Index of 4.44 in 2000, 5.04 in 2008 and 5.09 in 2018, going from a regular to a degraded state in 18 years. The occupation process caused major alterations in the natural components of the landscape over the course of 18 years, notably in the amount of forest. Protection of 35% of the remnant primary forest in the Guamá river basin is vital for the conservation of water resources vulnerable to changes in land use.

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A sustentabilidade hídrica na bacia do rio Guamá, Amazônia Oriental/Brasil

Cited by 7 publications

References 1 publication

Forest fragmentation and its potential implications for the management of the Tarumã-Açu River basin, Central Amazon, Brazil

Forest fragmentation and its potential implications for the management of the Tarumã-Açu River basin, Central Amazon, Brazil

Application of the Rural Water Sustainability Index (RWSI) in Amazon rural communities, Pará, Brazil

Spatial-temporal evolution of landscape degradation on the Guamá River Basin, Brazil

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