cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.7510682
title: Economic Profitability of Land Lease for Eucalyptus Cultivation in Sao Paulo State, Brazil

description: ABSTRACTThe present study aimed to analyze the leasing of land for the cultivation of eucalyptus in Vale do Paraiba, Sao Paulo state, Brazil. We used information from 10 properties, eight landowners, a pulp and paper company, and an investor in forestry assets. The economic tools used were the Net Present Value (NPV), Internal Rate of Return (IRR) and Land Expectation Value (LEV). Considering a minimum attractiveness rate of 8.75%, the cultivation of eucalyptus with investment in land in the study area was economically viable for only five of the properties analyzed. With the guarantee of productivity established in the contract, the investment was feasible for land lease, but uneconomical for the investor. Ensuring productivity was important to maintain economic viability for the investor and the lessee, considering that without productivity assurance only three properties showed economic viability for land lease.
DOI: 10.6084/m9.figshare.7514657
title: Conflict Analysis of Land Use and Land Cover in the Permanent Preservation Areas of Ifes - Alegre Campus, Espírito Santo State, Brazil

description: ABSTRACTThis study aimed to analyze the conflict of land use and land cover in Permanent Preservation Areas (PPA) of the ‘Instituto Federal de Educação, Ciência e Tecnologia do Espírito Santo’ - Ifes, Alegre Campus, in light of the current Brazilian Forest Code. The springs, watercourses, slopes and hill tops of the PPA were defined and investigated. The slopes and hill tops were obtained by the global digital elevation model GEDM-ASTER. Land use and land cover were achieved by photo-interpretation of orbital image sensor Geoeye 1 (spatial resolution of 0.50 m), totaling 36 thematic classes. The results showed that the PPAs occupy 34.33% of the total Ifes area, with an extension of 114.32 ha. The hilltops and watercourses occupy the largest areas, corresponding to 16.94% and 14.03%, respectively. The watercourses are the most affected areas, and the main classes responsible for conflicts are natural pastures (20.41 ha) and non-paved roads (1.18 ha).
DOI: 10.6084/m9.figshare.7514657.v1
title: Conflict Analysis of Land Use and Land Cover in the Permanent Preservation Areas of Ifes - Alegre Campus, Espírito Santo State, Brazil

description: ABSTRACTThis study aimed to analyze the conflict of land use and land cover in Permanent Preservation Areas (PPA) of the ‘Instituto Federal de Educação, Ciência e Tecnologia do Espírito Santo’ - Ifes, Alegre Campus, in light of the current Brazilian Forest Code. The springs, watercourses, slopes and hill tops of the PPA were defined and investigated. The slopes and hill tops were obtained by the global digital elevation model GEDM-ASTER. Land use and land cover were achieved by photo-interpretation of orbital image sensor Geoeye 1 (spatial resolution of 0.50 m), totaling 36 thematic classes. The results showed that the PPAs occupy 34.33% of the total Ifes area, with an extension of 114.32 ha. The hilltops and watercourses occupy the largest areas, corresponding to 16.94% and 14.03%, respectively. The watercourses are the most affected areas, and the main classes responsible for conflicts are natural pastures (20.41 ha) and non-paved roads (1.18 ha).
DOI: 10.6084/m9.figshare.7514201.v1
title: Eucalyptus Leaf Area Index Estimated by Vegetation Indices Using Landsat-5 TM Images

description: ABSTRACTThe objective of the present study was to fit regression models to the measured leaf area in eucalyptus forests and vegetation indices derived from Landsat-5 TM images. The study was carried out in commercial plantations located in the basin of the Doce River, Minas Gerais state, between 2008 and 2011. Leaf area was measured in the field, non-destructively, with the LAI-2000 device. The following indices were used: Normalized Difference Vegetation Index (NDVI), Soil Adjusted Vegetation Index (SAVI), and Simple Ratio (SR). The best model was adjusted from the NDVI, with a correlation coefficient of 0.73 and root mean square error of 0.37 m² m–2 (19%). We conclude that the leaf area index can be estimated by the regression models fit to the vegetation indices derived from the Landsat - 5 TM images.
DOI: 10.6084/m9.figshare.7514201
title: Eucalyptus Leaf Area Index Estimated by Vegetation Indices Using Landsat-5 TM Images

description: ABSTRACTThe objective of the present study was to fit regression models to the measured leaf area in eucalyptus forests and vegetation indices derived from Landsat-5 TM images. The study was carried out in commercial plantations located in the basin of the Doce River, Minas Gerais state, between 2008 and 2011. Leaf area was measured in the field, non-destructively, with the LAI-2000 device. The following indices were used: Normalized Difference Vegetation Index (NDVI), Soil Adjusted Vegetation Index (SAVI), and Simple Ratio (SR). The best model was adjusted from the NDVI, with a correlation coefficient of 0.73 and root mean square error of 0.37 m² m–2 (19%). We conclude that the leaf area index can be estimated by the regression models fit to the vegetation indices derived from the Landsat - 5 TM images.
DOI: 10.6084/m9.figshare.7507421
title: Diameter Structure and Spatial Arrangement of the Most Abundant Species in a Seasonal Semideciduous Forest Fragment in Botucatu, Southeastern Brazil

description: ABSTRACTWe evaluated the diameter distribution and spatial arrangement of the most abundant species in one of the five forest fragments occurring on Edgardia Experimental Farm (1,200 ha) in Botucatu, Sao Paulo state, southeastern Brazil (between latitudes 22°47'30''S and 22°50''S and longitudes 48°26'15''W and 48°22'30''W). The fragment area is 56 ha large. We sampled 185 contiguous plots of 100 m2 (1.85 ha), accessing the floristic composition and horizontal structure of the vegetation in the center of the fragment. Among the ten species with the highest importance values, seven presented abundance values which allowed studies on diameter distribution and spatial arrangement. The sum of the importance value indexes (IVI) obtained for the most abundant species (185.98) showed that they presented significant weight in the vegetation structure, indicating its regeneration. After adjusting the diameter distributions of the seven species, six showed an inverted J curve of their distribution pattern, reflecting continuous regeneration of plants of such species. Four of these distributions were distinguished as type I, or balanced distribution. These patterns of diameter distributions indicated attenuation of anthropogenic disturbances. There was a direct relationship between spatial arrangement and dispersal syndrome for Trichilia clausseni and Metrodorea nigra and, depending on the scales analyzed, for T. catigua and T. casaretti.
DOI: 10.6084/m9.figshare.7507421.v1
title: Diameter Structure and Spatial Arrangement of the Most Abundant Species in a Seasonal Semideciduous Forest Fragment in Botucatu, Southeastern Brazil

description: ABSTRACTWe evaluated the diameter distribution and spatial arrangement of the most abundant species in one of the five forest fragments occurring on Edgardia Experimental Farm (1,200 ha) in Botucatu, Sao Paulo state, southeastern Brazil (between latitudes 22°47'30''S and 22°50''S and longitudes 48°26'15''W and 48°22'30''W). The fragment area is 56 ha large. We sampled 185 contiguous plots of 100 m2 (1.85 ha), accessing the floristic composition and horizontal structure of the vegetation in the center of the fragment. Among the ten species with the highest importance values, seven presented abundance values which allowed studies on diameter distribution and spatial arrangement. The sum of the importance value indexes (IVI) obtained for the most abundant species (185.98) showed that they presented significant weight in the vegetation structure, indicating its regeneration. After adjusting the diameter distributions of the seven species, six showed an inverted J curve of their distribution pattern, reflecting continuous regeneration of plants of such species. Four of these distributions were distinguished as type I, or balanced distribution. These patterns of diameter distributions indicated attenuation of anthropogenic disturbances. There was a direct relationship between spatial arrangement and dispersal syndrome for Trichilia clausseni and Metrodorea nigra and, depending on the scales analyzed, for T. catigua and T. casaretti.
DOI: 10.6084/m9.figshare.7511627
title: Growth Stress in Eucalyptus benthamii and its Relationship with Dendrometric Characteristics at Different Spacings

description: ABSTRACTThe aim of this study was to evaluate the influence of planting eucalyptus wood with respect to its dendrometric characteristics and longitudinal residual strain (LRS) of the wood, and the relationships between these variables. The material used was Eucalyptus benthamii at five years of age in 2×3, 3×3, 3×4 and 4×4 m spacing. The projection of the crown was determined by measuring eight spokes with variable angles, and maps of crown distribution and projection were prepared. Measurements of LRS were taken 1.30 m above the ground in the four cardinal directions in living trees, with the aid of strain meters (Growth Strain Gauge) by the CIRAD-Forêt method. There was great variability in the results of the growth variables and levels of growth stresses for different spacing. The lowest average values of LRS were observed in the south direction, and increased spacing did not significantly alter the LRS values. Correlations between LRS and growth variables were only found with maximum LRS values for each tree.
DOI: 10.6084/m9.figshare.7511627.v1
title: Growth Stress in Eucalyptus benthamii and its Relationship with Dendrometric Characteristics at Different Spacings

description: ABSTRACTThe aim of this study was to evaluate the influence of planting eucalyptus wood with respect to its dendrometric characteristics and longitudinal residual strain (LRS) of the wood, and the relationships between these variables. The material used was Eucalyptus benthamii at five years of age in 2×3, 3×3, 3×4 and 4×4 m spacing. The projection of the crown was determined by measuring eight spokes with variable angles, and maps of crown distribution and projection were prepared. Measurements of LRS were taken 1.30 m above the ground in the four cardinal directions in living trees, with the aid of strain meters (Growth Strain Gauge) by the CIRAD-Forêt method. There was great variability in the results of the growth variables and levels of growth stresses for different spacing. The lowest average values of LRS were observed in the south direction, and increased spacing did not significantly alter the LRS values. Correlations between LRS and growth variables were only found with maximum LRS values for each tree.
DOI: 10.6084/m9.figshare.7507910
title: Detection of Logging Infrastructure in the State of Rondônia Using Remotely Sensed Data

description: ABSTRACTLogging lands (forest roads and log decks) are an underlying issue during selective logging activities, but they are responsible for most impacts on the forest. This study aimed to apply and assess the performance of five geoprocessing techniques on remotely sensed data using three different spatial resolutions to detect logging lands under forest management at the Jamari National Forest, state of Rondônia, Brazil. The research results showed that Normalized Difference Vegetation Index (NDVI) and Principal Components Analysis (PCA) presented the best overall accuracy using spatial resolutions of 5 and 10 meters, and 30 meters, respectively. Generally, the overall accuracy and Kappa statistics for the selectively logged forest classifications were not good (39.2% or lower, and 0.38 or lower, respectively). The low performance of the geoprocessing techniques is related to the subtle changes on the forest canopy cover under selective logging activities.
DOI: 10.6084/m9.figshare.7507910.v1
title: Detection of Logging Infrastructure in the State of Rondônia Using Remotely Sensed Data

description: ABSTRACTLogging lands (forest roads and log decks) are an underlying issue during selective logging activities, but they are responsible for most impacts on the forest. This study aimed to apply and assess the performance of five geoprocessing techniques on remotely sensed data using three different spatial resolutions to detect logging lands under forest management at the Jamari National Forest, state of Rondônia, Brazil. The research results showed that Normalized Difference Vegetation Index (NDVI) and Principal Components Analysis (PCA) presented the best overall accuracy using spatial resolutions of 5 and 10 meters, and 30 meters, respectively. Generally, the overall accuracy and Kappa statistics for the selectively logged forest classifications were not good (39.2% or lower, and 0.38 or lower, respectively). The low performance of the geoprocessing techniques is related to the subtle changes on the forest canopy cover under selective logging activities.
DOI: 10.6084/m9.figshare.7507616
title: Allometric Equations for the Estimation of Jatropha Curcas Biomass

description: ABSTRACT This paper describes the estimation of biomass and carbon stock in Jatropha crops in the Vale do Paraíba region, Brazil, using allometric equations developed based on regression analysis which considered the biomass as a variable dependent on easily obtainable dendrometric measurements. The biomass estimated using allometric equations was validated by the destructive direct method based on the cutting of trees of different heights and structures. When compared with other models, the linear equation Y = 1.3 (h²d), where Y is the biomass (kg), h is the height (m), and d is the crown projection (m) showed reliable results and no significant errors to estimate trees up to 3.2 m tall. For the 4 × 3 m plant spacing, result evaluations showed that the stock of dry matter ranged from 0.5 to 6 Mg ha–1, while the carbon stored in the area could reach 3 Mg C ha–1.
DOI: 10.6084/m9.figshare.7507616.v1
title: Allometric Equations for the Estimation of Jatropha Curcas Biomass

description: ABSTRACT This paper describes the estimation of biomass and carbon stock in Jatropha crops in the Vale do Paraíba region, Brazil, using allometric equations developed based on regression analysis which considered the biomass as a variable dependent on easily obtainable dendrometric measurements. The biomass estimated using allometric equations was validated by the destructive direct method based on the cutting of trees of different heights and structures. When compared with other models, the linear equation Y = 1.3 (h²d), where Y is the biomass (kg), h is the height (m), and d is the crown projection (m) showed reliable results and no significant errors to estimate trees up to 3.2 m tall. For the 4 × 3 m plant spacing, result evaluations showed that the stock of dry matter ranged from 0.5 to 6 Mg ha–1, while the carbon stored in the area could reach 3 Mg C ha–1.
DOI: 10.6084/m9.figshare.7511807
title: Barbatimão Volumetrics and Hypsometrics Estimates in Northern Minas Gerais

description: This study sought to assess the barbatimão volume and height estimates generating equations that can be used in the preparation of sustainable management plans from models to estimate the total volume with bark, without bark, of the bark as well as hypsometric relations. The production of bark in the various diameter classes was also compared. A forest inventory was conducted and generated the rigorous cubage of 100 separate trees in eight diameter classes by the method of Huber and tested 16 models of volumetric single and double entry and six of hypsometric relations. The best fit models were the Husch and Spurr in logarithmic form and the best height model was Stofel. Regarding the bark proportion it was found a higher percentage in individuals with the lowest diameter classes.
DOI: 10.6084/m9.figshare.7511807.v1
title: Barbatimão Volumetrics and Hypsometrics Estimates in Northern Minas Gerais

description: This study sought to assess the barbatimão volume and height estimates generating equations that can be used in the preparation of sustainable management plans from models to estimate the total volume with bark, without bark, of the bark as well as hypsometric relations. The production of bark in the various diameter classes was also compared. A forest inventory was conducted and generated the rigorous cubage of 100 separate trees in eight diameter classes by the method of Huber and tested 16 models of volumetric single and double entry and six of hypsometric relations. The best fit models were the Husch and Spurr in logarithmic form and the best height model was Stofel. Regarding the bark proportion it was found a higher percentage in individuals with the lowest diameter classes.
DOI: 10.6084/m9.figshare.7514807
title: Human Factors and Work Conditions in Forest Maintenance and Planting Operations

description: ABSTRACT The objective of the present study was to evaluate the human factors and working conditions in forestry maintenance and planting operations in order to improve comfort, safety and health conditions of workers. The study was conducted in a forest company located in the region of Campos Gerais, Parana State. The characterization of human factors and work conditions was conducted by interviews with 72 workers of syilviculture activities. The results indicated that the workers’ average age was 34.9 years, most of them from rural origin, married, with low level of education, and short time experience in the company and the function, 14.9 and 12.5 months, respectively. In the opinion of most of the workers, the protection glasses used in the herbicide application activity were identified as a cause of discomfort at work.
DOI: 10.6084/m9.figshare.7514807.v1
title: Human Factors and Work Conditions in Forest Maintenance and Planting Operations

description: ABSTRACT The objective of the present study was to evaluate the human factors and working conditions in forestry maintenance and planting operations in order to improve comfort, safety and health conditions of workers. The study was conducted in a forest company located in the region of Campos Gerais, Parana State. The characterization of human factors and work conditions was conducted by interviews with 72 workers of syilviculture activities. The results indicated that the workers’ average age was 34.9 years, most of them from rural origin, married, with low level of education, and short time experience in the company and the function, 14.9 and 12.5 months, respectively. In the opinion of most of the workers, the protection glasses used in the herbicide application activity were identified as a cause of discomfort at work.
DOI: 10.6084/m9.figshare.7509380
title: A New Trap Model for Scolytinae and Platypodinae (Insecta, Coleoptera)

description: ABSTRACT The insect monitoring is a relevant activity in the process of assessing forest stands health, as well as in ecological studies. Thus, in general, surveys are conducted using capture traps; for the Scolytinae and Platypodinae especially, groups impact traps are used, baited with alcohol 96 ºGL. This paper aims to describe a new trap model, denominated SEMI-FUNNEL. The project suggests the use of alternative materials in the trap manufacturing: 2000 mL PET bottle, plastic hose, plastic plate and wire, thereby seeking the reduction of costs.
DOI: 10.6084/m9.figshare.7509380.v1
title: A New Trap Model for Scolytinae and Platypodinae (Insecta, Coleoptera)

description: ABSTRACT The insect monitoring is a relevant activity in the process of assessing forest stands health, as well as in ecological studies. Thus, in general, surveys are conducted using capture traps; for the Scolytinae and Platypodinae especially, groups impact traps are used, baited with alcohol 96 ºGL. This paper aims to describe a new trap model, denominated SEMI-FUNNEL. The project suggests the use of alternative materials in the trap manufacturing: 2000 mL PET bottle, plastic hose, plastic plate and wire, thereby seeking the reduction of costs.
DOI: 10.6084/m9.figshare.7508081
title: Vegetation Dynamics Evaluation in the Amazon Rainforest Deforested Areas

description: ABSTRACT This article uses data from orbital platforms (MOD44B, 3B43 and SRTM) to evaluate the vegetation dynamics of tropical forests in deforested areas between 2000 and 2010. We analyzed, temporally and spatially, the occurrence of vegetation regeneration in deforested areas mapped by the PRODES system (Programa de Cálculo do Desflorestamento da Amazônia) of the INPE (Instituto Nacional de Pesquisas Espaciais). The results revealed regeneration in deforested areas and also showed that vegetation density tends to increase over time. Areas of regeneration are mainly found in low land areas following the path of deforestation. MOD44B was effective in the vegetation temporal and spatial study, and indicated occurrence of regeneration over time. The higher precipitation period overlapped with the period in which lower density pixels migrated to classes of higher density, which suggests a possible relationship between precipitation indexes and vegetation growth.
DOI: 10.6084/m9.figshare.7508081.v1
title: Vegetation Dynamics Evaluation in the Amazon Rainforest Deforested Areas

description: ABSTRACT This article uses data from orbital platforms (MOD44B, 3B43 and SRTM) to evaluate the vegetation dynamics of tropical forests in deforested areas between 2000 and 2010. We analyzed, temporally and spatially, the occurrence of vegetation regeneration in deforested areas mapped by the PRODES system (Programa de Cálculo do Desflorestamento da Amazônia) of the INPE (Instituto Nacional de Pesquisas Espaciais). The results revealed regeneration in deforested areas and also showed that vegetation density tends to increase over time. Areas of regeneration are mainly found in low land areas following the path of deforestation. MOD44B was effective in the vegetation temporal and spatial study, and indicated occurrence of regeneration over time. The higher precipitation period overlapped with the period in which lower density pixels migrated to classes of higher density, which suggests a possible relationship between precipitation indexes and vegetation growth.
DOI: 10.6084/m9.figshare.7506728
title: Management Effectiveness at the Ibitipoca State Park, Minas Gerais

description: ABSTRACT The issue of the conservation units management effectiveness depends on the knowledge of whether the management politics in theses conservation units are adequate to its creation goal, which is the conservation of biodiversity. This study aimed to analyze the management effectiveness at the Ibitipoca state park, encompassing the municipalities of Lima Duarte and Santa Rita do Ibitipoca, in Southeastern Minas Gerais, Brazil. The park management effectiveness was assessed from four modules: planning, inputs, processes and management results, where each module consisted of assessment of different parameters. Results showed a level of 54% of management effectiveness, which represents an averagely satisfactory level. The need for investments in human resources, inadequacy in financial resources and decision-making were highlighted as challenges, and compliance with the objectives, research, supervision and monitoring were highlighted as opportunities.