cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.6943835.v1
title: Surface water quality assessment of the main tributaries in the lower São Francisco River, Sergipe

description: ABSTRACT Contamination of water body by diffuse and point sources in springs has caused concerns mainly due to restrictions on its quality. The problem becomes more serious when contamination affects water for human consumption, as occurs in the river São Francisco, which supplies several municipalities of Sergipe. In this sense, the objective of the study was to evaluate water quality in eleven tributaries of the São Francisco river in its low course in the period from 2013 to 2014, in order to subsidize decision making by public management bodies operating in the region. For this purpose, it was used the Water Quality Index (WQI) and the Trophic State Index (TSI), as well the hierarchical grouping techniques associated to the samples to compare the different causes of contamination of each source. The lowest WQI values were observed in the rivers Betume and Jacaré and they were associated with high concentrations of coliforms related to the disposal of domestic effluents from the riverside cities. It was observed a tendency to eutrophication in the Jacaré stream, Santo Antônio, Pilões, Papagaio and Capivara rivers demonstrated by the high TSI in the rainy season. The results of the cluster analysis were close to their Euclidean distance, and showed that there were similarity relationships between the different water sources related to their parameters of water quality. In this piece of work, we also used the Factor Analysis resulted in the selection of five factors of water quality indicators which are mainly related to mineral content, organic matter, surface runoff and the level of pollution. Thus, it is concluded that the water quality of the São Francisco river tributaries is at a strong tendency towards contamination and that its tributaries need a constant monitoring for the environmental management decisions to be the most adequate for the sustainable survival of the riverside communities.
DOI: 10.6084/m9.figshare.7131437.v1
title: Baseflow representation module on MODCEL

description: ABSTRACT The land use characteristics of rural watersheds allow infiltration and consequent generation of groundwater flow, which constitutes a significant contribution to the hydrograph. Prior to this study, the MODCEL-COPPE/UFRJ model simulated only runoff, disregarding the losses occurred in rainfall-runoff process. Therefore, its application was more appropriate to urban watersheds, simulating flood events where surface flows prevail. This study aimed at representing the infiltration process and at incorporating the groundwater flow in the MODCEL’s structure, making feasible the rural watersheds simulation thus expanding its applicability as a hydrological model. A case study was performed in a 417 km2 subcatchment of Piabanha River, located at Petrópolis/RJ. It’s a predominantly rural watershed, with 80% of its area covered by forests. The model represented satisfactorily the seasonality and the magnitude of simulated recharges. In the parameter calibration procedure gave a coefficient of determination R2 = 0.75, comparing the calculated flows to the observed flows. During validation period, we obtained a coefficient of determination R2 = 0.76. The fit obtained was superior to that obtained in previous modeling of the same watershed by SMAP and MODCEL (previous version) and it was similar to TOPMODEL. In the hydrograph recession, new MODCEL presented R2 = 0.75, against 0.52 obtained in its previous version.
DOI: 10.6084/m9.figshare.7509437
title: Wood and Bark of Eucalyptus and Acacia in Pure and Mixed Stands

description: ABSTRACT This study aimed to evaluate the variation of the bark content and thickness, and wood basic density of Eucalyptus and Acacia planted in pure and mixed stands. Five trees of Eucalyptus urophylla × E. grandis and Acacia mangium were investigated in pure and mixed stands, totaling 20 trees. The content and thickness of the bark produced by Acacia in monoculture (47.5% and 1.32 cm) were approximately three times higher than those from mixed stand (15.2% and 0.51 cm). From these results, it can be concluded that there is no significant mean difference between the density for Eucalyptus and Acacia wood from the pure and mixed plantings. However, there is significant longitudinal variation of basic density of Acacia and Eucalyptus wood from pure and mixed stand, indicating differences in the wood quality from logs managed for multiple use.
DOI: 10.6084/m9.figshare.7509437.v1
title: Wood and Bark of Eucalyptus and Acacia in Pure and Mixed Stands

description: ABSTRACT This study aimed to evaluate the variation of the bark content and thickness, and wood basic density of Eucalyptus and Acacia planted in pure and mixed stands. Five trees of Eucalyptus urophylla × E. grandis and Acacia mangium were investigated in pure and mixed stands, totaling 20 trees. The content and thickness of the bark produced by Acacia in monoculture (47.5% and 1.32 cm) were approximately three times higher than those from mixed stand (15.2% and 0.51 cm). From these results, it can be concluded that there is no significant mean difference between the density for Eucalyptus and Acacia wood from the pure and mixed plantings. However, there is significant longitudinal variation of basic density of Acacia and Eucalyptus wood from pure and mixed stand, indicating differences in the wood quality from logs managed for multiple use.
DOI: 10.6084/m9.figshare.7131401
title: Forest restoration and hydrological parameters effects on soil water conditions: a structural equation modelling approach

description: ABSTRACT Although the effects of land use changes on hydrological functioning are widely addressed, issues such as which components of the hydrological system are affected, how and on what time scales are still poorly understood. In this context, we evaluated whether forest restoration improves soil water conditions in a Cerrado area, and whether the combined effects of forest structure and hydrological variables influence soil attributes. For this, we monitored three areas in different stages of natural succession over seven months, and evaluated vegetation structure indicators, hydrological indicators and soil indicators. Vegetation structure variables were analyzed with Principal Components Analysis, and to evaluate the direct and indirect effects among the variables we used structural equations modelling. Each successional stage differed in relation to forest structure, affecting the hydrological processes and causing the improvement of soil attributes with forest development. In the initial stage, throughfall was higher due to the more open vegetation, and the soil was more resistant to penetration. With the development of the vegetation, stemflow and interception also increased. As a result of the structural and hydrological changes, the model indicated that soil moisture was influenced directly by throughfall and stemflow, as well as by soil resistance to penetration and infiltration rates, and indirectly by forest structure, which influenced these variables, except infiltration rates. These results suggest that hydrological variables can be good indicators of forest restoration monitoring, providing a direct link to changes in soil conditions.
DOI: 10.6084/m9.figshare.7131401.v1
title: Forest restoration and hydrological parameters effects on soil water conditions: a structural equation modelling approach

description: ABSTRACT Although the effects of land use changes on hydrological functioning are widely addressed, issues such as which components of the hydrological system are affected, how and on what time scales are still poorly understood. In this context, we evaluated whether forest restoration improves soil water conditions in a Cerrado area, and whether the combined effects of forest structure and hydrological variables influence soil attributes. For this, we monitored three areas in different stages of natural succession over seven months, and evaluated vegetation structure indicators, hydrological indicators and soil indicators. Vegetation structure variables were analyzed with Principal Components Analysis, and to evaluate the direct and indirect effects among the variables we used structural equations modelling. Each successional stage differed in relation to forest structure, affecting the hydrological processes and causing the improvement of soil attributes with forest development. In the initial stage, throughfall was higher due to the more open vegetation, and the soil was more resistant to penetration. With the development of the vegetation, stemflow and interception also increased. As a result of the structural and hydrological changes, the model indicated that soil moisture was influenced directly by throughfall and stemflow, as well as by soil resistance to penetration and infiltration rates, and indirectly by forest structure, which influenced these variables, except infiltration rates. These results suggest that hydrological variables can be good indicators of forest restoration monitoring, providing a direct link to changes in soil conditions.
DOI: 10.6084/m9.figshare.7511687.v1
title: Influence of Spacing Simulation in the Economic Viability of an Agroforestry System

description: ABSTRACT This study aimed to simulate and verify the rentability of an agroforestry system composed of eucalipt, rice, soybean e cattle, according to the spacing variation in the plantation of eucalypt and agroforestry system, and compare the results with conventional eucalypt planting. Financial analysis was performed through the forestry project evaluation methods, Net Present Value (VPL), Equivalent Annual Value (VAE), Benefit/Cost Relation (B/C) and Internal Return Rate (TIR). All projects were shown to be economically viable, with eucalyptus monoculture showing the best results. We verified that the gain in area with planting of crops agricultural and cattle creation did not lead to the same financial return if this area was planted with trees.
DOI: 10.6084/m9.figshare.7511687
title: Influence of Spacing Simulation in the Economic Viability of an Agroforestry System

description: ABSTRACT This study aimed to simulate and verify the rentability of an agroforestry system composed of eucalipt, rice, soybean e cattle, according to the spacing variation in the plantation of eucalypt and agroforestry system, and compare the results with conventional eucalypt planting. Financial analysis was performed through the forestry project evaluation methods, Net Present Value (VPL), Equivalent Annual Value (VAE), Benefit/Cost Relation (B/C) and Internal Return Rate (TIR). All projects were shown to be economically viable, with eucalyptus monoculture showing the best results. We verified that the gain in area with planting of crops agricultural and cattle creation did not lead to the same financial return if this area was planted with trees.
DOI: 10.6084/m9.figshare.7514759
title: Happiness of Cascavel-PR working population according to the Gross Domestic Happiness index

description: Abstract This study aims to identify which variables most influence the workers happiness in the city of Cascavel, PR. Therefore, it applied the descriptive statistics on data collected from a questionnaire elaborated based on the adapted methodology of Gross National Happiness index-FIB. Among the questions the individuals were asked on how often they practice physical activity; had good a night of quiet and deep sleep; about the use of time, considering that this is one of the most significant factors in the quality of life, especially the time for leisure and socializing with family and friends. Balanced time management was assessed, including time in traffic, at work, in educational activities, leisure, etc. Among the results, being optimistic, the practice of physical exercises, participation in a social group, are factors that positively affect the happiness of individuals. And yet, in response to the question on what make them happier, we identified the preference for non-material factors, especially those related to family, good feelings, good practices in society, health, solidarity and spirituality.
DOI: 10.6084/m9.figshare.5668723
title: Rapid Assessment of Habitat Diversity Along the Araras Stream, Brazil

description: ABSTRACT Agriculture, urbanization, and industrialization are some of the anthropogenic activities that constantly generate negative impacts on natural environments. Part of this degradation directly affects aquatic systems. This study aimed to evaluate the visual characteristics of the Araras Stream, located in the municipality of Araras, São Paulo state, Brazil. Data was collected at six different assessment sites along the river in both rural and urban areas. The evaluation used a Rapid Habitat Diversity Assessment (RHDA) protocol composed of 22 parameters, which define levels of preservation of ecological conditions. According to this protocol, the 32 Km-long study transect along the Araras Stream was rated as impacted (39.6 points). A separate assessment by transects showed that only Transect 1 presented a natural level of preservation (71.8 points). Transects located in the urban area contributed the most to impacts on the aquatic environment. The RHDA protocol proved to be an important tool to evaluate and monitor aquatic environments.
DOI: 10.6084/m9.figshare.10074044.v1
title: Cordel literature and Northeastern migration: tradiction and dislocation

description: Abstract Seen as the origin, that is, the archaic, the cordel literature was almost always analyzed departing from the point of view of recovering, regaining the primitive roots of Brazilian literature. The aim of this work is to investigate how, through cultural dislocations, cordel literature is produced and discussed. By cultural dislocation we understand the migratory movement of people from the Northeast to Southeast Brazil, and the cultural relationships that follow such process. We analyze how these migratory movements influenced the poetic writing of the authors involved in such movements, and their consequences on the theoretical discussions on cordel literature.
DOI: 10.6084/m9.figshare.5668723.v1
title: Rapid Assessment of Habitat Diversity Along the Araras Stream, Brazil

description: ABSTRACT Agriculture, urbanization, and industrialization are some of the anthropogenic activities that constantly generate negative impacts on natural environments. Part of this degradation directly affects aquatic systems. This study aimed to evaluate the visual characteristics of the Araras Stream, located in the municipality of Araras, São Paulo state, Brazil. Data was collected at six different assessment sites along the river in both rural and urban areas. The evaluation used a Rapid Habitat Diversity Assessment (RHDA) protocol composed of 22 parameters, which define levels of preservation of ecological conditions. According to this protocol, the 32 Km-long study transect along the Araras Stream was rated as impacted (39.6 points). A separate assessment by transects showed that only Transect 1 presented a natural level of preservation (71.8 points). Transects located in the urban area contributed the most to impacts on the aquatic environment. The RHDA protocol proved to be an important tool to evaluate and monitor aquatic environments.
DOI: 10.6084/m9.figshare.5720911.v1
title: Effect of Nitrogen Application on the Production and Quality of Wood and Charcoal from a Hybrid of Eucalyptus grandis x Eucalyptus urophylla

description: ABSTRACT The present work aimed to verify the effect of different dosages of nitrogen on the production of dry material, and wood and charcoal quality made from a six years old hybrid clone of Eucalyptus grandis x Eucalyptus urophylla. Overall 40 trees were analyzed and five treatments in four blocks were studied, with two trees sampled per treatment within each block. Treatments consisted in the application of 0, 60, 120 and 240 kg.ha-1 of nitrogen (N) as ammonium sulfate in order to evaluate if the response to such compound was exclusively due to N. An additional treatment was applied with 120 kg.ha-1 of N as ammonium nitrate, totalizing five treatments. The tree growth, basic density, dry mass estimate, chemical and energetic composition of wood were evaluated, as well as physical, chemical and energetic characteristics of charcoal. The production of dry mass tended to increase with the nitrogen dosage applied. The effect of nitrogen dosage did not influence the basic density and energetic characteristics of charcoal, however the content of elemental nitrogen, total extractives and lignin of wood increased with nutrition. Such application did not influence the chemical and energetic characteristics of wood and charcoal.
DOI: 10.6084/m9.figshare.7509446.v1
title: Analysis of Physical Workload and Biomechanics in the Construction of Roofs in Wooden Frames

description: ABSTRACT With the growing use of wooden frames in construction, particularly in the roofs, companies are concerned with workers quality of life and safety. The research aimed to analyze the physical workload (heart rate monitor) and posture (MICHIGAN methodology). The study was conducted in the municipalities of Alegre, Jerome Monteiro and São José do Calçado, located in southern Espírito Santo. Data was collected in three construction sites during the months of September 2010 to May 2012, analyzing 18 workers. In the analysis of physical workload, activities for the installation of trusses, purlins, rafters and battens, were classified as heavy, requiring rest times. Workers’ posture during the slats assembly favors injuries and requires the adoption of urgent ergonomic measures.
DOI: 10.6084/m9.figshare.5720911
title: Effect of Nitrogen Application on the Production and Quality of Wood and Charcoal from a Hybrid of Eucalyptus grandis x Eucalyptus urophylla

description: ABSTRACT The present work aimed to verify the effect of different dosages of nitrogen on the production of dry material, and wood and charcoal quality made from a six years old hybrid clone of Eucalyptus grandis x Eucalyptus urophylla. Overall 40 trees were analyzed and five treatments in four blocks were studied, with two trees sampled per treatment within each block. Treatments consisted in the application of 0, 60, 120 and 240 kg.ha-1 of nitrogen (N) as ammonium sulfate in order to evaluate if the response to such compound was exclusively due to N. An additional treatment was applied with 120 kg.ha-1 of N as ammonium nitrate, totalizing five treatments. The tree growth, basic density, dry mass estimate, chemical and energetic composition of wood were evaluated, as well as physical, chemical and energetic characteristics of charcoal. The production of dry mass tended to increase with the nitrogen dosage applied. The effect of nitrogen dosage did not influence the basic density and energetic characteristics of charcoal, however the content of elemental nitrogen, total extractives and lignin of wood increased with nutrition. Such application did not influence the chemical and energetic characteristics of wood and charcoal.
DOI: 10.6084/m9.figshare.7509446
title: Analysis of Physical Workload and Biomechanics in the Construction of Roofs in Wooden Frames

description: ABSTRACT With the growing use of wooden frames in construction, particularly in the roofs, companies are concerned with workers quality of life and safety. The research aimed to analyze the physical workload (heart rate monitor) and posture (MICHIGAN methodology). The study was conducted in the municipalities of Alegre, Jerome Monteiro and São José do Calçado, located in southern Espírito Santo. Data was collected in three construction sites during the months of September 2010 to May 2012, analyzing 18 workers. In the analysis of physical workload, activities for the installation of trusses, purlins, rafters and battens, were classified as heavy, requiring rest times. Workers’ posture during the slats assembly favors injuries and requires the adoption of urgent ergonomic measures.
DOI: 10.6084/m9.figshare.7514171
title: Phytoremediation Capacity of Forest Species to Herbicides in Two Types of Soils

description: Abstract The present study aimed to evaluate the potential of forest species for herbicide phytoremediation. The experiment was conducted in a greenhouse with a randomized block design and a 2x3x3 factorial scheme, using two soils (Red-Yellow Latosol - RYL and Quartzarenic sandy soil - QN), three herbicide solutions (without herbicides/water, 2,4-D and atrazine), and three forest species (Cecropia hololeuca, Eucalyptus grandis x Eucalyptus urophylla and Hymenea coubaril), with four replications. After the experiment, Cucumis sativus was cultivated in order to investigate possible herbicide residues in the soils. The evaluated forest species reduced atrazine and 2,4-D residues in most treatments, except for the Jatobá (Hymenaea coubaril ) cultivated in the RYL soil. Eucalyptus was the species that showed the greatest tolerance to herbicide action, demonstrating the potential for phytoremediation of atrazine and 2,4-D. Cecropia hololeuca and Hymenaea coubaril presented the greatest potential for 2,4-D and atrazine, respectively.
DOI: 10.6084/m9.figshare.7514171.v1
title: Phytoremediation Capacity of Forest Species to Herbicides in Two Types of Soils

description: Abstract The present study aimed to evaluate the potential of forest species for herbicide phytoremediation. The experiment was conducted in a greenhouse with a randomized block design and a 2x3x3 factorial scheme, using two soils (Red-Yellow Latosol - RYL and Quartzarenic sandy soil - QN), three herbicide solutions (without herbicides/water, 2,4-D and atrazine), and three forest species (Cecropia hololeuca, Eucalyptus grandis x Eucalyptus urophylla and Hymenea coubaril), with four replications. After the experiment, Cucumis sativus was cultivated in order to investigate possible herbicide residues in the soils. The evaluated forest species reduced atrazine and 2,4-D residues in most treatments, except for the Jatobá (Hymenaea coubaril ) cultivated in the RYL soil. Eucalyptus was the species that showed the greatest tolerance to herbicide action, demonstrating the potential for phytoremediation of atrazine and 2,4-D. Cecropia hololeuca and Hymenaea coubaril presented the greatest potential for 2,4-D and atrazine, respectively.
DOI: 10.6084/m9.figshare.5720866
title: Physical and Anatomical Characteristics of Cedrela odorata L. and Cedrelinga cateniformis Ducke

description: ABSTRACT Studies of anatomy and technological research are needed for Cedrela odorata and Cedrelinga cateniformis species, since they are widely used in the furniture sector of Cruzeiro do Sul - Acre, Brazil. Thus, to enable the appropriate use of these wood species in the furniture industry, this study aimed to evaluate their physical and anatomical characteristics. Assays were performed to determine the basic density, dimensional variation and macroscopic description timber. The species were classified as lightweight and with excellent anisotropic and swelling factors, characteristics indicated for production of furniture as shelves, tables and cabinets.
DOI: 10.6084/m9.figshare.5720866.v1
title: Physical and Anatomical Characteristics of Cedrela odorata L. and Cedrelinga cateniformis Ducke

description: ABSTRACT Studies of anatomy and technological research are needed for Cedrela odorata and Cedrelinga cateniformis species, since they are widely used in the furniture sector of Cruzeiro do Sul - Acre, Brazil. Thus, to enable the appropriate use of these wood species in the furniture industry, this study aimed to evaluate their physical and anatomical characteristics. Assays were performed to determine the basic density, dimensional variation and macroscopic description timber. The species were classified as lightweight and with excellent anisotropic and swelling factors, characteristics indicated for production of furniture as shelves, tables and cabinets.