cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.7512755.v1
title: Land use impacts on water resources of the Manacás Lake Basin, Minas Gerais, Brazil

description: The 134.68 ha campus of the Federal University of Juiz de Fora (UFJF) is in urban area impacted by new developments. The population of 27,600 consumers causes the loss of green areas and generates increasing waste and sewage water. This study evaluated the impact of UFJF Campus activities on water quality, emphasizing the Manacás Lake Basin (MLB). The evaluation was based on five monitoring points: a spring (P1) and the four mouths of the streams that flow into Manacás Lake (P2 to P5). Water samples were collected monthly between November 2013 and October 2014, and pH, DO, COD, Conductivity and Turbidity were analyzed. The results showed that the DO increases from the spring (P1) to the mouth (P2), with low values at the other points, and a median of 1.3 mg L-1 at P5. COD does not follow a pattern, registering medians higher than 6 mgO2 L-1 at all points, highlighting P4 with 25.5 mgO2 L-1, the sub-basin which contains most of the Labs. Worse turbidity was found at P5, with 39.42 UNT, coinciding with the sub-basin most affected by construction. Conductivity gradually increased from P1 to P2, and medians were not statically different for P3, P4, and P5. Manacá Lake is Class 2 according to CONAMA resolution Nº 357/2005, but the results showed that the DO at P4 and P5 has values of Class 4 water, with frequent anaerobiosis.
DOI: 10.6084/m9.figshare.7507016
title: Water balance model evaluation based on an estimate of potential recharge

description: The free aquifer recharge is a process of major importance in groundwater hydrology because it represents the renewable reserves of the water source. A good estimate of this variable is therefore critical to the proper management of water resources, particularly in light of climate variability inherent to the climate regime, as well as the increasing of surface water pollution and increased demand for good quality water groundwater. This study used a water balance model in soil to estimate the potential recharge (Rp) of the unconfined aquifer and the other components of the hydrological cycle. The model was applied in two watershed headwaters of the Rio Grande in Minas Gerais, Brazil: the Lavrinha River Basin (BHRL) and the Marcela River Basin (BHRM). The BHRL presents higher values of Rp, with an annual average of 895 mm, which corresponds to 40% of rainfall, while at the BHRM these values were 393.3 mm and 25%, respectively. The base runoff values confirm the greater recharge in BRHL, where this hydrograph component corresponded to 76% of the total discharge, compared with 40% for BHRM. The BALSEQ model allowed us to capture this difference, but the results were satisfactory for only one of the years in the BHRL and for the entire period for the BHRM, which reinforces the need to use this model for long time periods.
DOI: 10.6084/m9.figshare.7512800
title: Hydrological and environmental analysis of the Pirajibu-Mirim watershed, Sorocaba, SP, Brazil

description: The watershed of the Pirajibu-Mirim River, in Sorocaba-SP, contributes to production and the municipal water supply, and is located in a high-priority region for the implementation of a Payment for Environmental Services (PES) program. In this context, this study aimed to evaluate the conservation of its water springs and environmental compliance with the legislation of Permanent Preservation Areas (PPAs). A macroscopic diagnosis of the water springs was therefore made in the field in order to subsequently classify their condition. The assessment of environmental compliance with the PPAs was performed with the aid of RapidEye (2014) satellite images and the Quantum GIS 1.6 program. The results indicated that water quality stands out positively, while the land use and occupation of the springs areas showed negative results. No water spring is located in protected areas and only one was found on an agricultural farm; none had signs indicating its presence. Most of them show evidence of human disturbance, such as degradation of vegetation and garbage dumping. The evaluation of environmental compliance demonstrated that 30.7% of the PPAs lack adequate vegetative cover, and thus may potentially be included in an intervention program for recovery due to degradation. The profile analysis of the properties that have water springs indicated the predominance of lands without any commercial use that included recreational country houses. The work indicated some environmental and socioeconomic characteristics of the watershed that can support public policy for the conservation of water resources in the region, if considered in the establishment of a PSA program.
DOI: 10.6084/m9.figshare.7512800.v1
title: Hydrological and environmental analysis of the Pirajibu-Mirim watershed, Sorocaba, SP, Brazil

description: The watershed of the Pirajibu-Mirim River, in Sorocaba-SP, contributes to production and the municipal water supply, and is located in a high-priority region for the implementation of a Payment for Environmental Services (PES) program. In this context, this study aimed to evaluate the conservation of its water springs and environmental compliance with the legislation of Permanent Preservation Areas (PPAs). A macroscopic diagnosis of the water springs was therefore made in the field in order to subsequently classify their condition. The assessment of environmental compliance with the PPAs was performed with the aid of RapidEye (2014) satellite images and the Quantum GIS 1.6 program. The results indicated that water quality stands out positively, while the land use and occupation of the springs areas showed negative results. No water spring is located in protected areas and only one was found on an agricultural farm; none had signs indicating its presence. Most of them show evidence of human disturbance, such as degradation of vegetation and garbage dumping. The evaluation of environmental compliance demonstrated that 30.7% of the PPAs lack adequate vegetative cover, and thus may potentially be included in an intervention program for recovery due to degradation. The profile analysis of the properties that have water springs indicated the predominance of lands without any commercial use that included recreational country houses. The work indicated some environmental and socioeconomic characteristics of the watershed that can support public policy for the conservation of water resources in the region, if considered in the establishment of a PSA program.
DOI: 10.6084/m9.figshare.7507940.v1
title: Uncertainties and errors flow estimate using hydrological modelling and precipitation by RADAR

description: Abstract This work presents an analysis of uncertainties and errors of the SCS-CN model of the Hydrologic Engineering Center - Hydrologic Modeling System (HEC-HMS), for hydrological events using observed and RADAR-estimated precipitation data of the São Miguel River Basin in State of Alagoas, which covers an area of 296 km². Physiographic data of the basin were used to find the initial estimates of the SCS-CN parameters. Then, using simultaneous measurements of precipitation and observed flow, the parameters were calibrated. Using independent data series, calibrated parameters were validated. The performance coefficient showed Nash-Sutcliffe values of 0.93 in the calibration phase and between 0.81 and 0.87 in the validation phase. The model was then used for past hydrological events, using RADAR-estimated precipitation data. This resulted in Nash-Sutcliffe coefficients between 0.75 and 0.79. The SCS-CN model with RADAR-estimated precipitation represented the time of the peak flow adequately; however, it underestimated the magnitude of the peak with errors up to 26% in some events. The methodology had satisfactory results for this basin and can be a useful tool for the prediction of flooding in other watersheds.
DOI: 10.6084/m9.figshare.7506518
title: Natural vector multi-agents geo-inspired in environmental management

description: Abstract Environmental management requires new models to minimize or control the effects of environmental problems on the population. The complexity of environmental problems requires conducting studies to develop models to adjust the environment’s dynamics. The proposed geo-inspired model of natural vector multi-agents (Multi-AVNG) allows for the computational observation of the dynamism of the environmental entity studied. This model is based on the theory of vector agents, changing its structure to include the environmental dynamic aspect using only two behaviors, the natural and the induced, through the vector model in geographic information systems and a function which will control the progression of the environmental entity according to the model’s defined parameters.
DOI: 10.6084/m9.figshare.7506518.v1
title: Natural vector multi-agents geo-inspired in environmental management

description: Abstract Environmental management requires new models to minimize or control the effects of environmental problems on the population. The complexity of environmental problems requires conducting studies to develop models to adjust the environment’s dynamics. The proposed geo-inspired model of natural vector multi-agents (Multi-AVNG) allows for the computational observation of the dynamism of the environmental entity studied. This model is based on the theory of vector agents, changing its structure to include the environmental dynamic aspect using only two behaviors, the natural and the induced, through the vector model in geographic information systems and a function which will control the progression of the environmental entity according to the model’s defined parameters.
DOI: 10.6084/m9.figshare.7507940
title: Uncertainties and errors flow estimate using hydrological modelling and precipitation by RADAR

description: Abstract This work presents an analysis of uncertainties and errors of the SCS-CN model of the Hydrologic Engineering Center - Hydrologic Modeling System (HEC-HMS), for hydrological events using observed and RADAR-estimated precipitation data of the São Miguel River Basin in State of Alagoas, which covers an area of 296 km². Physiographic data of the basin were used to find the initial estimates of the SCS-CN parameters. Then, using simultaneous measurements of precipitation and observed flow, the parameters were calibrated. Using independent data series, calibrated parameters were validated. The performance coefficient showed Nash-Sutcliffe values of 0.93 in the calibration phase and between 0.81 and 0.87 in the validation phase. The model was then used for past hydrological events, using RADAR-estimated precipitation data. This resulted in Nash-Sutcliffe coefficients between 0.75 and 0.79. The SCS-CN model with RADAR-estimated precipitation represented the time of the peak flow adequately; however, it underestimated the magnitude of the peak with errors up to 26% in some events. The methodology had satisfactory results for this basin and can be a useful tool for the prediction of flooding in other watersheds.
DOI: 10.17632/yjv7ts2s3z.1
title: Shootin1a-Mediated Actin–Adhesion Coupling Generates Force to Trigger Structural Plasticity of Dendritic Spines

description: Dendritic spines constitute the major compartments of excitatory post-synapses. They undergo activity-dependent enlargement, which is thought to increase the synaptic efficacy underlying learning and memory. The activity-dependent spine enlargement requires activation of signaling pathways leading to promotion of actin polymerization within spines. However, the molecular machinery that suffices for this structural plasticity remains unclear. Here we demonstrate that shootin1a links polymerizing actin filaments in spines with the cell adhesion molecules N-cadherin and L1-CAM, thereby mechanically coupling the filaments to the extracellular environment. Synaptic activation enhances shootin1a-mediated actin–adhesion coupling in spines. Promotion of actin polymerization is insufficient for the plasticity: the enhanced actin–adhesion coupling is required for polymerizing actin filaments to push against the membrane for spine enlargement. By integrating cell signaling, cell adhesion, and force generation into the current model of actin-based machinery, we propose a molecular machinery that is sufficient to trigger the activity-dependent spine structural plasticity.
DOI: 10.6084/m9.figshare.7518554
title: Leaf growth and antioxidative enzyme activities in sunflower seedlings supplemented by sanitary landfill leachate under drought stress

description: Abstract In arid or semi-arid regions, the limited availability of water resources has been one the main limiting factors in agricultural production. We analyzed the effects of the application of sanitary landfill leachate on the growth of leaves (number of leaves and leaf area) and the activities of the antioxidative enzymes superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX) and guaiacol peroxidase (GPX) in the leaves and roots of sunflower seedling subjected to drought stress. The experimental design was completely randomized in a factorial two (irrigated and non-irrigated) x four (sand; sand + organic fertilizer 100 kg N ha-1; sand + sanitary landfill leachate 100 kg N ha-1; sand + sanitary landfill leachate 150 kg N ha-1) with five replicates. In relation to foliar growth, the treatment 100 kg N ha-1 supplemented by sanitary landfill leachate increased the number of leaves and leaf area. In addition, there were increases in the antioxidative enzymes’ activities in leaves and roots of sunflower seedlings supplemented by sanitary landfill leachate. Thus, it is possible that the reductions in harmful effects of drought stress on the leaves’ growth in treatments supplemented by sanitary landfill leachate occurred due to increased antioxidative enzymes activities, especially CAT in leaves and GPX in roots.
DOI: 10.6084/m9.figshare.7518554.v1
title: Leaf growth and antioxidative enzyme activities in sunflower seedlings supplemented by sanitary landfill leachate under drought stress

description: Abstract In arid or semi-arid regions, the limited availability of water resources has been one the main limiting factors in agricultural production. We analyzed the effects of the application of sanitary landfill leachate on the growth of leaves (number of leaves and leaf area) and the activities of the antioxidative enzymes superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX) and guaiacol peroxidase (GPX) in the leaves and roots of sunflower seedling subjected to drought stress. The experimental design was completely randomized in a factorial two (irrigated and non-irrigated) x four (sand; sand + organic fertilizer 100 kg N ha-1; sand + sanitary landfill leachate 100 kg N ha-1; sand + sanitary landfill leachate 150 kg N ha-1) with five replicates. In relation to foliar growth, the treatment 100 kg N ha-1 supplemented by sanitary landfill leachate increased the number of leaves and leaf area. In addition, there were increases in the antioxidative enzymes’ activities in leaves and roots of sunflower seedlings supplemented by sanitary landfill leachate. Thus, it is possible that the reductions in harmful effects of drought stress on the leaves’ growth in treatments supplemented by sanitary landfill leachate occurred due to increased antioxidative enzymes activities, especially CAT in leaves and GPX in roots.
DOI: 10.6084/m9.figshare.7506488
title: Comparison of different water sampling methods to quantify limnological variables in a lotic environment

description: Abstract This study evaluated water sampling methodologies for determining limnological variables in a cross section of the Catolé Grande River at different flow rates. Samples were collected at depths of 15-30 cm and compared with integrated samples. The variables of turbidity, pH, electrical conductivity, dissolved oxygen and total coliforms were quantified. The results were compared, according to the different collection methodologies, using the statistical index, model efficiency, coefficient of determination, and linear regression analysis. There was little influence of the sampling methodologies in relation to turbidity, conductivity and total coliforms variables. For the pH variable, the sampling performed at 15-30 cm depth caused overestimation when compared to the integrated sample. Regarding the dissolved oxygen variable, the values obtained using 15-30 cm samples tend to overestimate when the concentrations are lower than 6.5 mg L-1;however, when the concentration is higher than this value, this type of sampling tends to underestimated when compared to values obtained using the integrated samples.
DOI: 10.6084/m9.figshare.7506488.v1
title: Comparison of different water sampling methods to quantify limnological variables in a lotic environment

description: Abstract This study evaluated water sampling methodologies for determining limnological variables in a cross section of the Catolé Grande River at different flow rates. Samples were collected at depths of 15-30 cm and compared with integrated samples. The variables of turbidity, pH, electrical conductivity, dissolved oxygen and total coliforms were quantified. The results were compared, according to the different collection methodologies, using the statistical index, model efficiency, coefficient of determination, and linear regression analysis. There was little influence of the sampling methodologies in relation to turbidity, conductivity and total coliforms variables. For the pH variable, the sampling performed at 15-30 cm depth caused overestimation when compared to the integrated sample. Regarding the dissolved oxygen variable, the values obtained using 15-30 cm samples tend to overestimate when the concentrations are lower than 6.5 mg L-1;however, when the concentration is higher than this value, this type of sampling tends to underestimated when compared to values obtained using the integrated samples.
DOI: 10.6084/m9.figshare.7514900
title: Physical attributes and carbon stock of soils of Archaeological Dark Earth of the Amazonia

description: Abstract In order to evaluate soil quality and sustainability in Amazon Archaeological Dark Earth environments, it is important to characterize the impacts of the use of different cover types. The objective of this work was therefore to evaluate the physical attributes and organic carbon content in areas of “Terra Preta Arqueológica”, in the municipality of Novo Aripuanã, AM, under the cultivation of pigeon pea (Cajanus cajan) and pasture, in comparison with forest cover, based on traditional univariate and multivariate statistical techniques and geostatistics. In order to accomplish this, grids with regular spacing and samples with 88 georeferenced points per grid were delimited. Samples of soil blocks with preserved structure and volumetric rings were collected to determine physical properties and organic carbon content. The pigeon pea and pasture soils differ statistically from that of the forest and presented above-average aggregate stability, but texture and organic carbon characteristics were below average. The exponential model showed that the physical attributes of the soil predominated, with a strong to moderate degree of dependence, with the area under pigeon pea presenting the greatest variability of soil attributes.
DOI: 10.6084/m9.figshare.7514900.v1
title: Physical attributes and carbon stock of soils of Archaeological Dark Earth of the Amazonia

description: Abstract In order to evaluate soil quality and sustainability in Amazon Archaeological Dark Earth environments, it is important to characterize the impacts of the use of different cover types. The objective of this work was therefore to evaluate the physical attributes and organic carbon content in areas of “Terra Preta Arqueológica”, in the municipality of Novo Aripuanã, AM, under the cultivation of pigeon pea (Cajanus cajan) and pasture, in comparison with forest cover, based on traditional univariate and multivariate statistical techniques and geostatistics. In order to accomplish this, grids with regular spacing and samples with 88 georeferenced points per grid were delimited. Samples of soil blocks with preserved structure and volumetric rings were collected to determine physical properties and organic carbon content. The pigeon pea and pasture soils differ statistically from that of the forest and presented above-average aggregate stability, but texture and organic carbon characteristics were below average. The exponential model showed that the physical attributes of the soil predominated, with a strong to moderate degree of dependence, with the area under pigeon pea presenting the greatest variability of soil attributes.
DOI: 10.17632/jrfj3cgykg.1
title: SARS-CoV-2 mutations acquired in mink reduce antibody-mediated neutralization - A study of M. Hoffmann et al.

description: Table S1: SARS-2-S sequences used for analysis (related to Figure 1)
DOI: 10.6084/m9.figshare.7514720
title: Objective assessment of ecosystem hydrological services in tropical areas: A Colombian experience in arid and semi-arid zones

description: Abstract This study presents a methodology to address the challenge of objectively demonstrating Ecosystem Hydrological Services (EHS). A case study is used in the region of the La Guajira Peninsula (Colombia), with a focus on the EHS of water flow regulation. The proposed methodology hypothesizes that EHS that have not been objectively demonstrated lead to failures in the implementation of guidelines of Payments for Ecosystem Services (PES). Following this idea, we have tried to understand and quantify the relationship between vegetation coverage and streamflow regulation. To prove this relationship and the existence of the mentioned EHS in the La Guajira Ecosystem, we determined land cover changes from 2000 to 2013 using the Normalized Difference Vegetation Index (NDVI), and we also quantified the streamflow regulation using hydrological and meteorological time series in the study area. The analysis methods used were insufficient to determine the influence of vegetation on hydric regulation EHS; nevertheless, a greater influence of morphometry was observed in medium-and large-sized basins. Another important finding shows the relevance of selecting an adequate spatial and time resolution when quantifying water flow regulation services and its relationship with land cover characteristics. In this way, this exercise shows the complexity of quantifying EHS. Furthermore, we highlight some aspects that must be taken into account to properly quantify streamflow regulation due to vegetation coverage.