cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.7506719
title: Shear in the Glue Line of Eucalyptus sp. Bonded with Different Adhesives and Weights

description: ABSTRACT This work aimed to evaluate the shear strength of glue line joints of Eucalyptus sp bonded with different adhesives and weights. Bonding of Eucalyptus sp was performed using two hot-curing adhesives (phenol-formaldehyde and melamine-formaldehyde), four cold-curing adhesives (resorcinol-formaldehyde, sodium silicate, PVA (polyvinyl acetate) and castor oil-based polyurethane, the weights were 150, 200 and 250 g/m2 double sided.Shear strength and failure in wood and shear in wet conditions were determined. According to the results, castor and resorcinol adhesives showed higher shear strength in the glue line in dry condition. Castor and phenol formaldehyde adhesives showed higher failure percentage in wood in dry condition.
DOI: 10.6084/m9.figshare.7516820
title: Dispersal and Characteristics of Myrceugenia euosma Fruit in Mixed Ombrophilous Forests, Southern Brazil

description: ABSTRACT This study aimed to characterize aspects related to propagules dispersion of Myrceugenia euosma (Myrtaceae) in a fragment of Mixed Ombrophillous Forest, Urupema, SC. For this, twenty-nine seed tree were evaluated for focal observation of visitors, propagules rain, removal and characterization of fruits. We recorded 140 visits of birds, occurring without preferential visit period. The species with higher visiting frequency and consumption of fruits were Zonotrichia capensis (Rufous-collared Sparrow) and Stephanophorus diadematus (Diademed Tanager), considered as potential dispersers. The frequency of collectors containing M. euosma propagules decreased with increased distance, presenting distinct behavior depending the type of propagule evaluated. We also found intact seeds in bird feces inside the collectors. The removal rate of fruits deposited on the ground was 22%, demonstrating that this is an important topic on the dispersal process and deserves attention in future studies.
DOI: 10.6084/m9.figshare.7517693
title: Similarity Between Adults and Regenerants of the Tree Component in Araucaria Forest

description: ABSTRACT This study aimed to inventory the tree regenerating component in a forest in Southern Plateau of Santa Catarina and compare it to the adult component of the same area. A total of 25 plots were allocated, where the regenerating and adults trees were identified and quantified. The Total Natural Regeneration Index (TNR) of each species was calculated. We used the analysis of similarities and the Jaccard index to verify the similarity between the components. A total of 503 regenerants belonging to 58 species and 29 families were sampled. Myrtaceae was the richest family (13). Leandra regnelli (Triana) Cogn., Myrcia splendens (Sw.) DC. and Miconia cinerascens Miq. showed the highest values of TNR. There was elevated dissimilarity between the regenerative and adult component, with 37.5% of the species adult component absent on natural regeneration. In conclusion, there is a low regenerative capacity of most species which may be associated with the presence of cattle in the area.
DOI: 10.6084/m9.figshare.7517693.v1
title: Similarity Between Adults and Regenerants of the Tree Component in Araucaria Forest

description: ABSTRACT This study aimed to inventory the tree regenerating component in a forest in Southern Plateau of Santa Catarina and compare it to the adult component of the same area. A total of 25 plots were allocated, where the regenerating and adults trees were identified and quantified. The Total Natural Regeneration Index (TNR) of each species was calculated. We used the analysis of similarities and the Jaccard index to verify the similarity between the components. A total of 503 regenerants belonging to 58 species and 29 families were sampled. Myrtaceae was the richest family (13). Leandra regnelli (Triana) Cogn., Myrcia splendens (Sw.) DC. and Miconia cinerascens Miq. showed the highest values of TNR. There was elevated dissimilarity between the regenerative and adult component, with 37.5% of the species adult component absent on natural regeneration. In conclusion, there is a low regenerative capacity of most species which may be associated with the presence of cattle in the area.
DOI: 10.6084/m9.figshare.7506719.v1
title: Shear in the Glue Line of Eucalyptus sp. Bonded with Different Adhesives and Weights

description: ABSTRACT This work aimed to evaluate the shear strength of glue line joints of Eucalyptus sp bonded with different adhesives and weights. Bonding of Eucalyptus sp was performed using two hot-curing adhesives (phenol-formaldehyde and melamine-formaldehyde), four cold-curing adhesives (resorcinol-formaldehyde, sodium silicate, PVA (polyvinyl acetate) and castor oil-based polyurethane, the weights were 150, 200 and 250 g/m2 double sided.Shear strength and failure in wood and shear in wet conditions were determined. According to the results, castor and resorcinol adhesives showed higher shear strength in the glue line in dry condition. Castor and phenol formaldehyde adhesives showed higher failure percentage in wood in dry condition.
DOI: 10.6084/m9.figshare.7513532
title: The Influence of Moisture in Bending Strength of Eucalypt Wood

description: ABSTRACT The study aimed to evaluate the dynamic bending strength of Eucalyptus grandis and Eucalyptus cloeziana woods when subject to different moisture conditions. Samples were divided into three moisture conditions (dry, air-conditioned and wet). The dynamic bending properties, density and equilibrium moisture content were evaluated. The collected data were analyzed through factorial analysis of variance. E. cloeziana wood in the wet condition was more resistant than the dried and air-conditioned samples. On the other hand, dynamic bending strength of E. grandis wood was not significant for the moisture conditions studied. E. cloeziana wood showed higher ability to absorb the impact than E. grandis wood. Both species were classified as low bending strength. Therefore, the use of these species should not be recommended in places with shock loads.
DOI: 10.6084/m9.figshare.7513586
title: Carbon Balance and Economic Viability in Two Agroforestry Systems in Viçosa, MG

description: ABSTRACT The lack of studies on carbon balance and economic viability in Agroforestry Systems (AFS) motivated this study. We evaluated an agrosilvopastoral system (SASP), composed of Eucalypt, beans and Brachiaria-grass; and a silvopastoral system (SSP), composed of Eucalypt and Brachiaria-grass, both 3 years old. The tree biomass was estimated using the indirect method and the direct method was used to quantify the grass biomass. Greenhouse gas (GHG) emissions were based on the National Inventory tab of GHGs. The Net Present Value (NPV) and Internal Rate of Return (IRR) were calculated. Both systems had a positive carbon balance. The NPV in the SASP was $388.77 and the IRR was 21%. The positive results were due to revenue generated by the sale of beans. The SSP NPV was -$ 1,298.00 and the IRR of -2%, considering the 3 years old trees cutting.
DOI: 10.6084/m9.figshare.7513586.v1
title: Carbon Balance and Economic Viability in Two Agroforestry Systems in Viçosa, MG

description: ABSTRACT The lack of studies on carbon balance and economic viability in Agroforestry Systems (AFS) motivated this study. We evaluated an agrosilvopastoral system (SASP), composed of Eucalypt, beans and Brachiaria-grass; and a silvopastoral system (SSP), composed of Eucalypt and Brachiaria-grass, both 3 years old. The tree biomass was estimated using the indirect method and the direct method was used to quantify the grass biomass. Greenhouse gas (GHG) emissions were based on the National Inventory tab of GHGs. The Net Present Value (NPV) and Internal Rate of Return (IRR) were calculated. Both systems had a positive carbon balance. The NPV in the SASP was $388.77 and the IRR was 21%. The positive results were due to revenue generated by the sale of beans. The SSP NPV was -$ 1,298.00 and the IRR of -2%, considering the 3 years old trees cutting.
DOI: 10.6084/m9.figshare.7513532.v1
title: The Influence of Moisture in Bending Strength of Eucalypt Wood

description: ABSTRACT The study aimed to evaluate the dynamic bending strength of Eucalyptus grandis and Eucalyptus cloeziana woods when subject to different moisture conditions. Samples were divided into three moisture conditions (dry, air-conditioned and wet). The dynamic bending properties, density and equilibrium moisture content were evaluated. The collected data were analyzed through factorial analysis of variance. E. cloeziana wood in the wet condition was more resistant than the dried and air-conditioned samples. On the other hand, dynamic bending strength of E. grandis wood was not significant for the moisture conditions studied. E. cloeziana wood showed higher ability to absorb the impact than E. grandis wood. Both species were classified as low bending strength. Therefore, the use of these species should not be recommended in places with shock loads.
DOI: 10.6084/m9.figshare.7513535
title: Environmental Assessment of the Olhos D’Água Park: the Method of Willingness to Pay

description: ABSTRACT The aim of the study was to apply the method of Willingness to Pay (WTP) to users of the Olhos D`água park in order to contribute to the valuation of its environmental attributes aiming at preservation and improvement of the Conservation Unit. The Olhos D’Água park is located in a prime area of Brasília administratively created by the Federal District. This study was based on economic and psychographic segmentation variables and on the ecological knowledge of users. To this end, 100 questionnaires were applied with questions divided into two parts: 1) indication of willingness to pay by users of the park, and; 2) segmentation, according to specific criteria and characterization of users. The results indicated not only that people with altruistic profile and more concerned with the environment showed a greater willingness to pay for conservation of the Olhos D´água park, but also that this segment of users could contribute to the definition of green user profile and, thus, serve as a basis for the elaboration of an environmental marketing program geared to increase the financial resources for preservation and improvement of the park.
DOI: 10.6084/m9.figshare.7513535.v1
title: Environmental Assessment of the Olhos D’Água Park: the Method of Willingness to Pay

description: ABSTRACT The aim of the study was to apply the method of Willingness to Pay (WTP) to users of the Olhos D`água park in order to contribute to the valuation of its environmental attributes aiming at preservation and improvement of the Conservation Unit. The Olhos D’Água park is located in a prime area of Brasília administratively created by the Federal District. This study was based on economic and psychographic segmentation variables and on the ecological knowledge of users. To this end, 100 questionnaires were applied with questions divided into two parts: 1) indication of willingness to pay by users of the park, and; 2) segmentation, according to specific criteria and characterization of users. The results indicated not only that people with altruistic profile and more concerned with the environment showed a greater willingness to pay for conservation of the Olhos D´água park, but also that this segment of users could contribute to the definition of green user profile and, thus, serve as a basis for the elaboration of an environmental marketing program geared to increase the financial resources for preservation and improvement of the park.
DOI: 10.6084/m9.figshare.7513541.v1
title: Arboreal Vegetation Dynamics in an Anthropized Montane Araucaria Forest

description: ABSTRACT Changes in floristic composition, phytosociological structure and dynamic processes like ingrowth, mortality and diameter increment were studied between 2007 and 2009 in all trees with DBH ≥ 5 cm in a fragment of Montane Araucaria Forest in Boa Ventura do São Roque, Paraná, Brazil. The analyses showed the occurrence 2596 ind.ha-1, 25 families, 40 genera and 45 species, while in the survey conducted in 2009, 2558 indivuals.ha-1, 27 families, 41 genera and 47 species were registered, with Matayba elaeagnoides Radlk. being the most important species in both surveys. The forest fragment showed a mortality rate of 0.41% per year and recruitment of 1.75% per year. This indicates that the dynamics take place in a gradual manner, with a mean annual increment (MAI) of 0.328 cm.year-1. Based on the evaluated parameters, it follows that the fragment is in process of regeneration.
DOI: 10.6084/m9.figshare.7513541
title: Arboreal Vegetation Dynamics in an Anthropized Montane Araucaria Forest

description: ABSTRACT Changes in floristic composition, phytosociological structure and dynamic processes like ingrowth, mortality and diameter increment were studied between 2007 and 2009 in all trees with DBH ≥ 5 cm in a fragment of Montane Araucaria Forest in Boa Ventura do São Roque, Paraná, Brazil. The analyses showed the occurrence 2596 ind.ha-1, 25 families, 40 genera and 45 species, while in the survey conducted in 2009, 2558 indivuals.ha-1, 27 families, 41 genera and 47 species were registered, with Matayba elaeagnoides Radlk. being the most important species in both surveys. The forest fragment showed a mortality rate of 0.41% per year and recruitment of 1.75% per year. This indicates that the dynamics take place in a gradual manner, with a mean annual increment (MAI) of 0.328 cm.year-1. Based on the evaluated parameters, it follows that the fragment is in process of regeneration.
DOI: 10.6084/m9.figshare.7517762
title: Soil Carbon Dynamics in Native Ecosystems and Reforestation in Santa Catarina

description: ABSTRACT Changes in land use combined with management practices contribute to changes in soil carbon inputs and outputs. This study aimed to evaluate the soil carbon dynamics in native ecosystems and reforestation in Santa Catarina. The study was conducted between February and May, 2007. The following areas were evaluated: Native Field (NF); Araucaria Forest (AF); Eucalyptus (ER) and Pinus (PR) reforestation. Carbon stocks, carbon microbial biomass (CMB), soil basal respiration (SBR), microbial (qMic) and metabolic (qCO2) quotients were analyzed. The highest concentrations of carbon were found in AF and NF, and biochemical characteristics indicated that NF and AR have the best capacity to store carbon in soil among the land use systems evaluated. Eucalyptus and Pinus reforestation showed high rates of SBR, qCO2 and low concentrations of CMB that suggest these land use systems lose more CO2 to atmosphere than native ecosystems.
DOI: 10.6084/m9.figshare.7517762.v1
title: Soil Carbon Dynamics in Native Ecosystems and Reforestation in Santa Catarina

description: ABSTRACT Changes in land use combined with management practices contribute to changes in soil carbon inputs and outputs. This study aimed to evaluate the soil carbon dynamics in native ecosystems and reforestation in Santa Catarina. The study was conducted between February and May, 2007. The following areas were evaluated: Native Field (NF); Araucaria Forest (AF); Eucalyptus (ER) and Pinus (PR) reforestation. Carbon stocks, carbon microbial biomass (CMB), soil basal respiration (SBR), microbial (qMic) and metabolic (qCO2) quotients were analyzed. The highest concentrations of carbon were found in AF and NF, and biochemical characteristics indicated that NF and AR have the best capacity to store carbon in soil among the land use systems evaluated. Eucalyptus and Pinus reforestation showed high rates of SBR, qCO2 and low concentrations of CMB that suggest these land use systems lose more CO2 to atmosphere than native ecosystems.
DOI: 10.6084/m9.figshare.5670394
title: Detection of Fungi in Acca Sellowiana (Berg) Burret Seeds

description: ABSTRACT Acca sllowiana (Berg) Burret is a native fruit species in southern Brazil, which is attracting great interest due to the high economic potential of its fruit organoleptic potential; the main form of propagation of the species is sexual way. Aiming to determine the sanitary quality of seeds, three forms of detection of fungi were compared with and without surface sterilization. The seeds were derived from four counties in the state of Rio Grande do Sul and three counties in the state of Santa Catarina. The culture media of Potato Dextrose Agar (PDA), V8 (tomato juice) and the method of “Blotter Test” were tested. The following fungi were identified: Aspergillus niger, Aspergillus flavus, Penicillium sp., Colletotrichum gloeosporioides, Fusarium sp., Curvularia sp., Alternaria sp. Trichoderma sp. Epicoccum spp. and Phomopsis sp. The agarized media are more sensitive in the detection of fungi in Acca sellowiana seeds. The sterilization of seeds reduces the incidence of weed fungi.
DOI: 10.6084/m9.figshare.5670394.v1
title: Detection of Fungi in Acca Sellowiana (Berg) Burret Seeds

description: ABSTRACT Acca sllowiana (Berg) Burret is a native fruit species in southern Brazil, which is attracting great interest due to the high economic potential of its fruit organoleptic potential; the main form of propagation of the species is sexual way. Aiming to determine the sanitary quality of seeds, three forms of detection of fungi were compared with and without surface sterilization. The seeds were derived from four counties in the state of Rio Grande do Sul and three counties in the state of Santa Catarina. The culture media of Potato Dextrose Agar (PDA), V8 (tomato juice) and the method of “Blotter Test” were tested. The following fungi were identified: Aspergillus niger, Aspergillus flavus, Penicillium sp., Colletotrichum gloeosporioides, Fusarium sp., Curvularia sp., Alternaria sp. Trichoderma sp. Epicoccum spp. and Phomopsis sp. The agarized media are more sensitive in the detection of fungi in Acca sellowiana seeds. The sterilization of seeds reduces the incidence of weed fungi.
DOI: 10.6084/m9.figshare.5670556.v1
title: Carbon, Nitrogen, and Natural Abundance Of Δ13C and Δ15N of Soils Under Agroforestry Systems

description: ABSTRACT The aim of this study was to evaluate changes in C and N levels and in the natural abundance of δ15N and δ13C of a Inceptisol in an agroforestry system (AFS). Soil samples were collected from eight depth levels from 0.0-1.0 m in each studied area. The experiment was carried out in a completely randomized 2 × 8 (2 forest areas and 8 depths) split-plot design with three replications. Except for the topsoil (0.0-0.10), the area of this AFS has preserved content of C and increased level of N (0.2-1.0) compared to the Forest. Both areas showed signs of natural abundance of δ13C in plants with C3 photosynthetic pathway, and the forest area presented higher values of δ15N in the superficial layers (0.0-0.20), indicating greater decomposition of organic matter.
DOI: 10.6084/m9.figshare.5670556
title: Carbon, Nitrogen, and Natural Abundance Of Δ13C and Δ15N of Soils Under Agroforestry Systems

description: ABSTRACT The aim of this study was to evaluate changes in C and N levels and in the natural abundance of δ15N and δ13C of a Inceptisol in an agroforestry system (AFS). Soil samples were collected from eight depth levels from 0.0-1.0 m in each studied area. The experiment was carried out in a completely randomized 2 × 8 (2 forest areas and 8 depths) split-plot design with three replications. Except for the topsoil (0.0-0.10), the area of this AFS has preserved content of C and increased level of N (0.2-1.0) compared to the Forest. Both areas showed signs of natural abundance of δ13C in plants with C3 photosynthetic pathway, and the forest area presented higher values of δ15N in the superficial layers (0.0-0.20), indicating greater decomposition of organic matter.
DOI: 10.6084/m9.figshare.7511255
title: Soil Macrofauna as Indicators in Tree Legume Revegetation

description: ABSTRACT The study was conducted in an area of abandoned pasture located in the city of Valença (RJ) revegetated with tree legumes. Different proportions of nitrogen-fixing leguminous trees were used: 0% (0L), 25% (25L), 50% (50L) and 75% (75L). For evaluation of soil biota, samplings were made in the end of the dry season and in the rainy season. Samples were collected in the abandoned pasture, in a secondary forest, and in two grassland areas (PA and PB). The process of reforestation has increased the overall diversity of soil fauna. Formicidae was the group that stood out, being abundant in all treatments and in the two periods of collection. During the rainy season, a considerable increase in the amount of invertebrates in the litter layer was observed in the treatments 0L, 25L, 50L, 75L and in the secondary forest, while during the dry season, such increase occurred in the 0-10 cm layer.
DOI: 10.6084/m9.figshare.7511255.v1
title: Soil Macrofauna as Indicators in Tree Legume Revegetation

description: ABSTRACT The study was conducted in an area of abandoned pasture located in the city of Valença (RJ) revegetated with tree legumes. Different proportions of nitrogen-fixing leguminous trees were used: 0% (0L), 25% (25L), 50% (50L) and 75% (75L). For evaluation of soil biota, samplings were made in the end of the dry season and in the rainy season. Samples were collected in the abandoned pasture, in a secondary forest, and in two grassland areas (PA and PB). The process of reforestation has increased the overall diversity of soil fauna. Formicidae was the group that stood out, being abundant in all treatments and in the two periods of collection. During the rainy season, a considerable increase in the amount of invertebrates in the litter layer was observed in the treatments 0L, 25L, 50L, 75L and in the secondary forest, while during the dry season, such increase occurred in the 0-10 cm layer.
DOI: 10.6084/m9.figshare.5670559
title: Genetic Versus Environmental Influence on Radial Variation in Myracrodruon urundeuva Wood

description: ABSTRACT We hypothesized that Myracrodruon urundeuva trees of two provenances with different genotypes would present variations influenced by their origin terms of anatomy and specific gravity when planted in an environment different from their seed origin, but under the same environmental conditions. We investigated radial variation in 12 trees. The observation that only vessel frequency and fiber length showed the same pattern of radial variation in the two provenances indicate that radial variation in M. urundeuva seems to depend on the origin of the seeds, that is, a genetic factor, rather than on the influence of climate and soil, which repreent environmental factors. We noticed marked differences in all features when comparing the same growth rings in each provenance, a result that reinforces the genetic influence on wood formation. We conclude that the studied plants maintain their wood structure as a result of genetic information, as selected by climatic conditions of seed original area, and possibly due to the highly conservative wood anatomy.