cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.9870893
title: Flora and Vegetation in Different Physiognomies of a Mussununga in Southeastern Brazil

description: ABSTRACT Mussununga is an understudied ecosystem within the Atlantic Forest domain, in sandy spodosol lowlands from Bahia to Espírito Santo. Its physiognomy varies from grassland to forest, with a transitional savannic area. We evaluated the life-form spectra differences between the grassland and savanna Mussunungas and its relationship with the depth of a soil impermeable layer (ortstein). The study area is located in the municipality of Linhares, Espírito Santo State. Ten plots were settled in each physiognomy. The floristic and vegetation spectra (accordingly to Raunkiaer) were compared using the G-test. A total of 35 species into three life-forms were found: Phanerophytes, hemicryptophytes and cryptophytes. The floristic spectra were similar in both physiognomies, with a greater richness of phanerophytes. However, the vegetation spectra of the two areas were different. Phanerophytes dominated in the savannas (where ortstein is deeper), while the shallower ortstein of the grasslands favored hemicryptophytes.
DOI: 10.6084/m9.figshare.9870893.v1
title: Flora and Vegetation in Different Physiognomies of a Mussununga in Southeastern Brazil

description: ABSTRACT Mussununga is an understudied ecosystem within the Atlantic Forest domain, in sandy spodosol lowlands from Bahia to Espírito Santo. Its physiognomy varies from grassland to forest, with a transitional savannic area. We evaluated the life-form spectra differences between the grassland and savanna Mussunungas and its relationship with the depth of a soil impermeable layer (ortstein). The study area is located in the municipality of Linhares, Espírito Santo State. Ten plots were settled in each physiognomy. The floristic and vegetation spectra (accordingly to Raunkiaer) were compared using the G-test. A total of 35 species into three life-forms were found: Phanerophytes, hemicryptophytes and cryptophytes. The floristic spectra were similar in both physiognomies, with a greater richness of phanerophytes. However, the vegetation spectra of the two areas were different. Phanerophytes dominated in the savannas (where ortstein is deeper), while the shallower ortstein of the grasslands favored hemicryptophytes.
DOI: 10.6084/m9.figshare.9871451
title: Population Fluctuation of Termitofauna (Blattodea: Isoptera) in Six Forest Fragments of the Mata Atlântica

description: ABSTRACT The objective of this work was to evaluate the forest restoration of the basin of Guapiaçu river in Cachoeiras de Macacu, Rio de Janeiro state, using the families of Termites as tools for environmental assessment. We analyzed the population fluctuation and feeding guilds of the families of Termites: Kalotermitidae, Rhinotermitidae and Termitidae. Six sampling points were arranged along Guapiaçu river, five points being inferred in reforestation carried out in the basin and a point in a regeneration control area. Quantitative and qualitative surveys followed standard protocols and the samples were obtained directly, without baits. Thirty species within 25 genera were identified and the family Termitidae was the most frequent. The termite fauna of the control point P06 was the richest. From the frequencies of occurrence of the species related to their trophic guild, an ecological evaluation table of the environments was proposed. The P05 area, rich in plant species, presented the greatest similarity to the natural regeneration area P06. The majority of the species was classified as xilophagous.
DOI: 10.6084/m9.figshare.9871451.v1
title: Population Fluctuation of Termitofauna (Blattodea: Isoptera) in Six Forest Fragments of the Mata Atlântica

description: ABSTRACT The objective of this work was to evaluate the forest restoration of the basin of Guapiaçu river in Cachoeiras de Macacu, Rio de Janeiro state, using the families of Termites as tools for environmental assessment. We analyzed the population fluctuation and feeding guilds of the families of Termites: Kalotermitidae, Rhinotermitidae and Termitidae. Six sampling points were arranged along Guapiaçu river, five points being inferred in reforestation carried out in the basin and a point in a regeneration control area. Quantitative and qualitative surveys followed standard protocols and the samples were obtained directly, without baits. Thirty species within 25 genera were identified and the family Termitidae was the most frequent. The termite fauna of the control point P06 was the richest. From the frequencies of occurrence of the species related to their trophic guild, an ecological evaluation table of the environments was proposed. The P05 area, rich in plant species, presented the greatest similarity to the natural regeneration area P06. The majority of the species was classified as xilophagous.
DOI: 10.6084/m9.figshare.9871460
title: Potential and Future Geographical Distribution of Eremanthus erythropappus (DC.) MacLeish: a Tree Threatened by Climate Change

description: ABSTRACT Eremanthus erythropappus is a commercially-important tree which has a long history of exploitation in the Brazilian State of Minas Gerais. The knowledge on the potential geographical distribution of E. erythropappus is therefore critical for the species sustainability. Thus, the aim of this study was to estimate and map current and future ecological niche for E. erythropappus in Minas Gerais. We used the Random Forests algorithm to model the ecological niche for current and future climates scenarios. Our predictions indicate Espinhaço, Mantiqueira, and Canastra mountain ranges as core areas of distribution and forecast drastic reductions in potential areas under all climate scenarios. Based on our results, we highlight that the continual harvesting of naturally-occurring E. erythropappus populations will not be sufficient to supply the market demand. Silviculture practices would likely serve as an economically viable and ecological sustainable alternative to harvesting natural populations.
DOI: 10.6084/m9.figshare.9871460.v1
title: Potential and Future Geographical Distribution of Eremanthus erythropappus (DC.) MacLeish: a Tree Threatened by Climate Change

description: ABSTRACT Eremanthus erythropappus is a commercially-important tree which has a long history of exploitation in the Brazilian State of Minas Gerais. The knowledge on the potential geographical distribution of E. erythropappus is therefore critical for the species sustainability. Thus, the aim of this study was to estimate and map current and future ecological niche for E. erythropappus in Minas Gerais. We used the Random Forests algorithm to model the ecological niche for current and future climates scenarios. Our predictions indicate Espinhaço, Mantiqueira, and Canastra mountain ranges as core areas of distribution and forecast drastic reductions in potential areas under all climate scenarios. Based on our results, we highlight that the continual harvesting of naturally-occurring E. erythropappus populations will not be sufficient to supply the market demand. Silviculture practices would likely serve as an economically viable and ecological sustainable alternative to harvesting natural populations.
DOI: 10.6084/m9.figshare.14328959
title: Data for Leaf 13C data constrain the uncertainty of the carbon dynamics of temperate forest ecosystems

description: The first part of data contains the eddy covariance based carbon flux observation and climate forcing data at six temperate forest sites. The second part is the leaf carbon isotope observation obtained from the Work Package 5 of CARBOEURFLUX project for these sites.
DOI: 10.6084/m9.figshare.8987507
title: First Report of Heterotermes longiceps (Blattodea: Rhinotermitidae) Termite in Teak Plantations

description: ABSTRACT Heterotermes longiceps termites was observed causing injuries in Tectona grandis plants in a forest plantation in Cáceres, Mato Grosso, Brazil. H. longiceps caused galleries below the bark, at the heartwood-sapwood interface, from the beginning of the root until approximately 1 m height tall and very infested plants has died. This is the first report of H. longiceps damage in teak in Brazil.
DOI: 10.6084/m9.figshare.8987507.v1
title: First Report of Heterotermes longiceps (Blattodea: Rhinotermitidae) Termite in Teak Plantations

description: ABSTRACT Heterotermes longiceps termites was observed causing injuries in Tectona grandis plants in a forest plantation in Cáceres, Mato Grosso, Brazil. H. longiceps caused galleries below the bark, at the heartwood-sapwood interface, from the beginning of the root until approximately 1 m height tall and very infested plants has died. This is the first report of H. longiceps damage in teak in Brazil.
DOI: 10.6084/m9.figshare.9871475
title: Modeling Deforestation in the State of Rondônia

description: ABSTRACT This study applied a deforestation model for the entire State of Rondônia assuming three scenarios of deforestation: business as usual, optimistic and pessimistic. Those scenarios were constructed for the time-period of 2012-2050 using the Dinamica EGO software. Rondônia deforestation dataset was provided by the Agência Ambiental do Estado de Rondônia (Rondônia State Environmental Agency) and was used as input of the deforestation modeling. Based on this study results, we estimated that 32%, 37% and 47% of Rondônia’s native forest could be fully deforested by 2050 assuming the optimistic, business as usual and pessimistic scenarios, respectively. Regardless of the chosen scenario, we expect that deforestation will be spatially concentrated in Northern Rondônia in the next decades. The greatest concern, however, could be the integrity of the protected areas assuming the business as usual and/or pessimistic scenario. In addition, we expect a substantial increase of the forest fragmentation by 2050.
DOI: 10.6084/m9.figshare.9871475.v1
title: Modeling Deforestation in the State of Rondônia

description: ABSTRACT This study applied a deforestation model for the entire State of Rondônia assuming three scenarios of deforestation: business as usual, optimistic and pessimistic. Those scenarios were constructed for the time-period of 2012-2050 using the Dinamica EGO software. Rondônia deforestation dataset was provided by the Agência Ambiental do Estado de Rondônia (Rondônia State Environmental Agency) and was used as input of the deforestation modeling. Based on this study results, we estimated that 32%, 37% and 47% of Rondônia’s native forest could be fully deforested by 2050 assuming the optimistic, business as usual and pessimistic scenarios, respectively. Regardless of the chosen scenario, we expect that deforestation will be spatially concentrated in Northern Rondônia in the next decades. The greatest concern, however, could be the integrity of the protected areas assuming the business as usual and/or pessimistic scenario. In addition, we expect a substantial increase of the forest fragmentation by 2050.
DOI: 10.6084/m9.figshare.8987510
title: Occurrence of Tectona grandis Stem Injury Caused by Cornitermes cumulans Termite

description: ABSTRACT Termites of the species Cornitermes cumulans (Kollar, 1832) were observed causing injuries in the stem of Tectona grandis in commercial forest plantations in Cáceres, Mato Grosso state, Brazil. C. cumulans forms galleries below the bark, at the heartwood/sap-wood interface of 1.8 years-old trees. This is the first occurrence of this type of injury in stem caused by C. cumulans in T. grandis in Brazil.
DOI: 10.6084/m9.figshare.8987510.v1
title: Occurrence of Tectona grandis Stem Injury Caused by Cornitermes cumulans Termite

description: ABSTRACT Termites of the species Cornitermes cumulans (Kollar, 1832) were observed causing injuries in the stem of Tectona grandis in commercial forest plantations in Cáceres, Mato Grosso state, Brazil. C. cumulans forms galleries below the bark, at the heartwood/sap-wood interface of 1.8 years-old trees. This is the first occurrence of this type of injury in stem caused by C. cumulans in T. grandis in Brazil.
DOI: 10.6084/m9.figshare.8987513
title: What is the Effect of Thiamine Hydrochloride on Rooting of Sapindaceae Stem Cuttings?

description: ABSTRACT Sapindaceae family presents notable richness of liana species in the Neotropics. Many of them are potentially ornamental, but still unexplored. Two Sapindaceae species were selected to test the efficiency of thiamine hydrochloride in plant propagation from stem cuttings. Thiamine hydrochloride has an unexplored potential for higher and better rooting of plant cuttings and it is a cheaper alternative to the traditional usage of phytohormones. Results showed no difference between treatment and control for all root variables evaluated in the two species studied. Seedling production from cuttings does not require application of thiamine hydrochloride in the concentration used to ensure rooting; only water irrigation is sufficient. However, further experiments involving different concentrations of thiamin hydrochloride should be conducted to detect whether different concentrations influence rooting.
DOI: 10.6084/m9.figshare.8987513.v1
title: What is the Effect of Thiamine Hydrochloride on Rooting of Sapindaceae Stem Cuttings?

description: ABSTRACT Sapindaceae family presents notable richness of liana species in the Neotropics. Many of them are potentially ornamental, but still unexplored. Two Sapindaceae species were selected to test the efficiency of thiamine hydrochloride in plant propagation from stem cuttings. Thiamine hydrochloride has an unexplored potential for higher and better rooting of plant cuttings and it is a cheaper alternative to the traditional usage of phytohormones. Results showed no difference between treatment and control for all root variables evaluated in the two species studied. Seedling production from cuttings does not require application of thiamine hydrochloride in the concentration used to ensure rooting; only water irrigation is sufficient. However, further experiments involving different concentrations of thiamin hydrochloride should be conducted to detect whether different concentrations influence rooting.
DOI: 10.6084/m9.figshare.14328962
title: First Report of Parasaissetia nigra in Khaya ivorensis Seedlings in Brazil

description: ABSTRACT The objective of this research is to report the occurrence of the nigra scale Parasaissetia nigra (Nietner, 1861) (Hemiptera: Coccidae) in mahogany (Khaya ivorensis) seedlings in a forest nursery in Mato Grosso state. In September 2017, the infestation was detected on the leaves and branches of the plants, causing injury and the death of the apical meristem and leaf curling symptoms. It was verified the symbiosis of P. nigra with ants, due to the sugary exudate. The chemical control was performed with insecticidal syrup and the proposed method was effective. This was the first reported occurrence of P. nigra on African mahogany in Brazil.
DOI: 10.6084/m9.figshare.14328962.v1
title: First Report of Parasaissetia nigra in Khaya ivorensis Seedlings in Brazil

description: ABSTRACT The objective of this research is to report the occurrence of the nigra scale Parasaissetia nigra (Nietner, 1861) (Hemiptera: Coccidae) in mahogany (Khaya ivorensis) seedlings in a forest nursery in Mato Grosso state. In September 2017, the infestation was detected on the leaves and branches of the plants, causing injury and the death of the apical meristem and leaf curling symptoms. It was verified the symbiosis of P. nigra with ants, due to the sugary exudate. The chemical control was performed with insecticidal syrup and the proposed method was effective. This was the first reported occurrence of P. nigra on African mahogany in Brazil.
DOI: 10.6084/m9.figshare.7974794
title: Additive and Non-additive Biomass Equations for Black Wattle

description: ABSTRACT The objectives of this work were to propose additive equations for biomass components (stem and crown) and total biomass for black wattle (Acacia mearnsii De Wild.) and show the inconsistency of independently adjusted biomass equations. Two procedures were used to fit nonlinear equations of biomass: i) independent and ii) systems of equations. The second procedure, defined by the application of the seemingly unrelated regression model, has better biological and statistical properties to estimate allometric equations of biomass components and total biomass when compared with the independent estimation. An effective property of this procedure is the additivity, i.e., the estimates of component biomass are compatible with those of total biomass. Independent fitted adjusted equations do not consider the dependence between the biomass components, thus, besides the estimates being non-additive, which is an undesirable property, they will result in estimates with larger variance.
DOI: 10.6084/m9.figshare.9276293
title: Bioassay Technique and Maintenance of Gyropsylla spegazziniana (Lizer, 1719) (Hemiptera: Psylloidea: Aphalaridae) in vitro Conditions

description: ABSTRACT Gyropsylla spegazziniana is one of the most important pest of yerba mate by sap-sucking that lead to leaves deformation and there are no insecticides registered for its control. The present study describes a new technique to be used in bioassays with the insect. Galls were collected from infested yerba mate plants. In the laboratory, the galls were partially opened and distributed in plastic containers. The emerged adults were transferred to plastic containers with the perforated bottom and a central opening in the lid, and subjected to spraying. After that, insects were transferred to yerba mate seedlings in plastic cages and maintained in laboratory to daily assessment. The use of a lid with central opening prevented the insects escaping, and avoiding the previous anesthetic to spraying. The mortality was less than 10% after 10 days. The technique was considered adequate for maintenance and performance of laboratory bioassays.
DOI: 10.6084/m9.figshare.9276293.v1
title: Bioassay Technique and Maintenance of Gyropsylla spegazziniana (Lizer, 1719) (Hemiptera: Psylloidea: Aphalaridae) in vitro Conditions

description: ABSTRACT Gyropsylla spegazziniana is one of the most important pest of yerba mate by sap-sucking that lead to leaves deformation and there are no insecticides registered for its control. The present study describes a new technique to be used in bioassays with the insect. Galls were collected from infested yerba mate plants. In the laboratory, the galls were partially opened and distributed in plastic containers. The emerged adults were transferred to plastic containers with the perforated bottom and a central opening in the lid, and subjected to spraying. After that, insects were transferred to yerba mate seedlings in plastic cages and maintained in laboratory to daily assessment. The use of a lid with central opening prevented the insects escaping, and avoiding the previous anesthetic to spraying. The mortality was less than 10% after 10 days. The technique was considered adequate for maintenance and performance of laboratory bioassays.
DOI: 10.6084/m9.figshare.7974794.v1
title: Additive and Non-additive Biomass Equations for Black Wattle

description: ABSTRACT The objectives of this work were to propose additive equations for biomass components (stem and crown) and total biomass for black wattle (Acacia mearnsii De Wild.) and show the inconsistency of independently adjusted biomass equations. Two procedures were used to fit nonlinear equations of biomass: i) independent and ii) systems of equations. The second procedure, defined by the application of the seemingly unrelated regression model, has better biological and statistical properties to estimate allometric equations of biomass components and total biomass when compared with the independent estimation. An effective property of this procedure is the additivity, i.e., the estimates of component biomass are compatible with those of total biomass. Independent fitted adjusted equations do not consider the dependence between the biomass components, thus, besides the estimates being non-additive, which is an undesirable property, they will result in estimates with larger variance.
DOI: 10.6084/m9.figshare.7974785
title: Small-scale Management of Secondary Forests in the Brazilian Atlantic Forest

description: ABSTRACT Sustainable management of tropical and subtropical secondary forests for multiple purposes, including timber, may encourage farmers to promote regeneration of native forest. We studied the population structures and commercial timber production in two adjacent 33 years-old Brazilian Atlantic Forest stands: a 26 ha forest managed through enrichment with three fast-growing commercial timber species, and a 10 ha naturally regenerated unmanaged forest. The tree species presented basal area of 26.9 m2 ha–1 and 23.8 m2 ha–1 in the enriched and the unmanaged forest, respectively. Timber volume (DBH ≥ 15 cm) in the enriched forest was 104 m3 ha–1 (3.7 m3 ha–1 year–1 rate of increment), 67% of which from the species planted in the enrichment process. The unmanaged forest presented 78.4 m3 ha–1 of timber (2.4 m3 ha–1 year–1 rate of increment) (45% from the planted species). Timber volumes and DBH distributions of both stands suggest that selective harvesting could produce valuable timber now, while stimulating growth of the next cycle.
DOI: 10.6084/m9.figshare.7974785.v1
title: Small-scale Management of Secondary Forests in the Brazilian Atlantic Forest

description: ABSTRACT Sustainable management of tropical and subtropical secondary forests for multiple purposes, including timber, may encourage farmers to promote regeneration of native forest. We studied the population structures and commercial timber production in two adjacent 33 years-old Brazilian Atlantic Forest stands: a 26 ha forest managed through enrichment with three fast-growing commercial timber species, and a 10 ha naturally regenerated unmanaged forest. The tree species presented basal area of 26.9 m2 ha–1 and 23.8 m2 ha–1 in the enriched and the unmanaged forest, respectively. Timber volume (DBH ≥ 15 cm) in the enriched forest was 104 m3 ha–1 (3.7 m3 ha–1 year–1 rate of increment), 67% of which from the species planted in the enrichment process. The unmanaged forest presented 78.4 m3 ha–1 of timber (2.4 m3 ha–1 year–1 rate of increment) (45% from the planted species). Timber volumes and DBH distributions of both stands suggest that selective harvesting could produce valuable timber now, while stimulating growth of the next cycle.
DOI: 10.6084/m9.figshare.8848406
title: Nanostructured Films Produced from the Bleached Pinus sp. Kraft Pulp

description: ABSTRACT This study investigates the physical and mechanical properties of nanostructured films produced from Pinus sp. kraft pulp. To obtain the nanocellulose, the bleached kraft pulp was submitted to six different grinding regimes: two, five, ten, 20, 30, and 40 passes through the grinder. The influence of the number of passes was evaluated through the films’ physical and mechanical properties. The results show that the nanofibers reduced the thickness and considerably increased the density values of the fabricated films. The tensile strength increased more than 300% and the burst index was ten times higher in relation to normal papers. The more compact structure and lower porosity caused by the larger contact surface between nanofibers in the nanostructured films resulted in higher values of density, tensile strength, and burst resistance.