cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.7507619.v1
title: Insecticides Assessment on Thaumastocoris peregrinus (Hemiptera: Thaumastocoridae) Bronze Bug Control in Laboratory Conditions

description: ABSTRACT The study aimed to evaluate the control efficiency of insecticides on Thaumastocoris peregrinus in the laboratory conditions. Therefore, 15 plants of Eucalyptus dunnii received the follow field spray: imidacloprid (78.8g ai / ha), thiamethoxam (37.5g ai / ha), lambda-cyhalothrin + thiamethoxam (21.2 + 25.8g ai / ha), lambda-cyhalothrin (24.9g ai / ha), and the untreated control only water. To determine the insecticides efficiency, we used a containment test, with E. dunnii leaves sprayed and collected at two different times. In the laboratory was used eight reps of leaves to adult and eight to nymphs by treatment individually placed in petri dishes; each repetition received 10 insect specimens. Assessments of alive insects were carried out at second, fourth, twentieth, twenty-fourth days after spray treatment (DAT). We conclude that the insecticides tested, on respective rate, presented efficient control of T. peregrinus nymphs and adults.
DOI: 10.6084/m9.figshare.7515377
title: Trichoderma spp. in the Production of Seedling of Forest Species

description: ABSTRACT Seeds healthy and rapid development of seedlings of native species may be critical to the success of your establishment. This study evaluated the effect of Trichoderma spp. on seed and seedling development of Parapiptadenia rigida (angico), Cedrela fissilis (cedro) and Pelthophorum dubium (canafistula). The fungi was applied at different times of the production of seedlings. The fungi action was different between species and between the variables. Cedro was less responsive to application of Trichoderma spp. at any time of the seedlings production and the association of Trichoderma spp. With angico as the seed treatment favored the incidence of some pathogens, however the application later favored only the leaves development. In canafístula, the seed treatment provided control of pathogens associated and stimulated the emergence and production of leaves in seedlings, have potential to be used for seed treatment of this species.
DOI: 10.6084/m9.figshare.7515377.v1
title: Trichoderma spp. in the Production of Seedling of Forest Species

description: ABSTRACT Seeds healthy and rapid development of seedlings of native species may be critical to the success of your establishment. This study evaluated the effect of Trichoderma spp. on seed and seedling development of Parapiptadenia rigida (angico), Cedrela fissilis (cedro) and Pelthophorum dubium (canafistula). The fungi was applied at different times of the production of seedlings. The fungi action was different between species and between the variables. Cedro was less responsive to application of Trichoderma spp. at any time of the seedlings production and the association of Trichoderma spp. With angico as the seed treatment favored the incidence of some pathogens, however the application later favored only the leaves development. In canafístula, the seed treatment provided control of pathogens associated and stimulated the emergence and production of leaves in seedlings, have potential to be used for seed treatment of this species.
DOI: 10.6084/m9.figshare.7513889
title: Dormancy breaking of Albizia pedicellaris (DC.) L. Rico seeds

description: ABSTRACT The study aimed to evaluate the efficiency of seeds dormancy breakage methods for Albizia pedicellaris in laboratory. Seeds were treated with ten pre-sowing treatments: chemical scarification using sulfuric acid for 5, 10, 15 and 30 minutes, physical scarification followed or not by immersion in water for 6, 12 and 24 hours, thermal shock and control. Completely randomized design was used with four replications of 25 seed per experimental unit. The followings variables were evaluated: germination percentage, speed germination index, normal seedlings number, abnormal seedling number, and mortality. The results indicate that the most efficient method to overcome dormancy was mechanical scarification followed or not by immersion for 6 or 12 hours or immersion in sulfuric acid for 30 minutes.
DOI: 10.6084/m9.figshare.7513889.v1
title: Dormancy breaking of Albizia pedicellaris (DC.) L. Rico seeds

description: ABSTRACT The study aimed to evaluate the efficiency of seeds dormancy breakage methods for Albizia pedicellaris in laboratory. Seeds were treated with ten pre-sowing treatments: chemical scarification using sulfuric acid for 5, 10, 15 and 30 minutes, physical scarification followed or not by immersion in water for 6, 12 and 24 hours, thermal shock and control. Completely randomized design was used with four replications of 25 seed per experimental unit. The followings variables were evaluated: germination percentage, speed germination index, normal seedlings number, abnormal seedling number, and mortality. The results indicate that the most efficient method to overcome dormancy was mechanical scarification followed or not by immersion for 6 or 12 hours or immersion in sulfuric acid for 30 minutes.
DOI: 10.6084/m9.figshare.7510421
title: Forest Restoration After Bauxite Mining: Assessment of Planted tree Species

description: ABSTRACT The aim of this study was to evaluate the seedlings of tree species planted for forest restoration in a bauxite mining. We allocated twenty plots of 9 × 6 m and diameter at ground level, height and canopy diameter of planted seedlings. Also were calculated the mortality percentage and the importance value (VI) species. We recorded 540 alive individuals (22.86% mortality) and 45 species. The species with the highest VIs were Solanum lycocarpum (14.7%) and Schinus terebinthifolius (10.8%). S. terebinthifolius, S. lycocarpum and Joannesia princeps, contributed 30.4% canopy cover. Average height of seedlings planted ranged from 0.4 m to 3.9 m. The species used in the restoration of the mined area provided ecological benefits to the area, such as soil coverage, thus ameliorating erosion and invasion of aggressive exotic grasses.
DOI: 10.6084/m9.figshare.7510421.v1
title: Forest Restoration After Bauxite Mining: Assessment of Planted tree Species

description: ABSTRACT The aim of this study was to evaluate the seedlings of tree species planted for forest restoration in a bauxite mining. We allocated twenty plots of 9 × 6 m and diameter at ground level, height and canopy diameter of planted seedlings. Also were calculated the mortality percentage and the importance value (VI) species. We recorded 540 alive individuals (22.86% mortality) and 45 species. The species with the highest VIs were Solanum lycocarpum (14.7%) and Schinus terebinthifolius (10.8%). S. terebinthifolius, S. lycocarpum and Joannesia princeps, contributed 30.4% canopy cover. Average height of seedlings planted ranged from 0.4 m to 3.9 m. The species used in the restoration of the mined area provided ecological benefits to the area, such as soil coverage, thus ameliorating erosion and invasion of aggressive exotic grasses.
DOI: 10.6084/m9.figshare.7512422
title: Impact of Site Conditions Changes on the Tree Ring Records Suitability as Climate Proxies in the Brazilian Amazon

description: ABSTRACT The increment zones width in the xylem of Swietenia macrophylla King was investigated by dendrochronological methods in an undisturbed and a strongly disturbed tropical site near Aripuanã, Mato Grosso, Brazil (10°09’ S, 59°26’W). The study aimed to assess the impact of forest disturbance on the relationship between precipitation and the cambial growth of this species. Tree-ring width chronologies were developed for both sites from cross-dated increment curves. Simple correlations were computed between monthly precipitation records and the annual increment of Swietenia for the period between 1870 and 2000. Logging activities and altered land use caused a significant decrease of the water supply of the Swietenia trees grown in the disturbed area compared to trees grown in the undisturbed area. Consequently, the precipitation of almost the total growing season had a significant influence on the tree ring width of Swietenia grown in the disturbed area, while in the undisturbed forest area the significant correlation between monthly precipitation and the tree ring width of Swietenia was restricted to the beginning of the growing season (November to January). However, the reconstruction of monthly precipitation data from the tree ring width records was more precise using the chronology developed from tree ring width records of undisturbed trees compared to the chronology developed from tree ring widths from the disturbed area. It was concluded that the use of the tree ring widths of Swietenia as climate proxies is restricted to certain months of the year and requires tree ring width chronologies developed from trees grown in undisturbed or only slightly disturbed forest areas without severe anthropogenic changes in microclimate.
DOI: 10.6084/m9.figshare.7512422.v1
title: Impact of Site Conditions Changes on the Tree Ring Records Suitability as Climate Proxies in the Brazilian Amazon

description: ABSTRACT The increment zones width in the xylem of Swietenia macrophylla King was investigated by dendrochronological methods in an undisturbed and a strongly disturbed tropical site near Aripuanã, Mato Grosso, Brazil (10°09’ S, 59°26’W). The study aimed to assess the impact of forest disturbance on the relationship between precipitation and the cambial growth of this species. Tree-ring width chronologies were developed for both sites from cross-dated increment curves. Simple correlations were computed between monthly precipitation records and the annual increment of Swietenia for the period between 1870 and 2000. Logging activities and altered land use caused a significant decrease of the water supply of the Swietenia trees grown in the disturbed area compared to trees grown in the undisturbed area. Consequently, the precipitation of almost the total growing season had a significant influence on the tree ring width of Swietenia grown in the disturbed area, while in the undisturbed forest area the significant correlation between monthly precipitation and the tree ring width of Swietenia was restricted to the beginning of the growing season (November to January). However, the reconstruction of monthly precipitation data from the tree ring width records was more precise using the chronology developed from tree ring width records of undisturbed trees compared to the chronology developed from tree ring widths from the disturbed area. It was concluded that the use of the tree ring widths of Swietenia as climate proxies is restricted to certain months of the year and requires tree ring width chronologies developed from trees grown in undisturbed or only slightly disturbed forest areas without severe anthropogenic changes in microclimate.
DOI: 10.6084/m9.figshare.7509986
title: Dynamics and Edge Effect of an Atlantic Forest Fragment in Brazil

description: ABSTRACT The woody plants in an edge area formed approximately 35 years ago in an Atlantic Forest fragment in northeastern Brazil were examined, and three environments defined: edge, intermediate, and interior. Canopy tree densities and basal areas were found to be similar in all three environments, and also similar to previous published studies in the same region; species richness was greatest at the forest edge. The understory showed greater species richness in the forest interior, but greater diversity and equitability in the intermediate environment. Understory environments close to the forest edge demonstrated larger stem diameters than in the forest interior, although at lesser densities and with smaller total basal areas. Our results indicated the existence of distinct patterns in canopy and understory that most likely reflect differences in the response times of these two vegetation layers, with the understory being more sensitive to alterations in environmental structure.
DOI: 10.6084/m9.figshare.7509986.v1
title: Dynamics and Edge Effect of an Atlantic Forest Fragment in Brazil

description: ABSTRACT The woody plants in an edge area formed approximately 35 years ago in an Atlantic Forest fragment in northeastern Brazil were examined, and three environments defined: edge, intermediate, and interior. Canopy tree densities and basal areas were found to be similar in all three environments, and also similar to previous published studies in the same region; species richness was greatest at the forest edge. The understory showed greater species richness in the forest interior, but greater diversity and equitability in the intermediate environment. Understory environments close to the forest edge demonstrated larger stem diameters than in the forest interior, although at lesser densities and with smaller total basal areas. Our results indicated the existence of distinct patterns in canopy and understory that most likely reflect differences in the response times of these two vegetation layers, with the understory being more sensitive to alterations in environmental structure.
DOI: 10.6084/m9.figshare.7507190.v1
title: Hipsometric, Volumetric and Growth Equations for Khaya ivorensis, Planted in Pirapora

description: ABSTRACT The present study aimed to provide hipsometric, volumetric and growth prediction equations for Khaya ivorensis species. To adjust the height equations we used data with total height and diameter at 1.3 meters collected in the city of Pirapora. For volumetric equations, we performed the scaling of 21 standing trees in the same planting. The growth equations were estimated with volume per hectare of 10 parcels, with age between 30 and 59 months. The volume calculation was performed following the method of Smalian. The adjusted equations showed satisfactory statistics, however lower than the other most widespread crops such as Eucalyptus. But in the face of the lack of technical information about the African Mahogany, this work has contributed significantly to the state of the art of the mentioned plant.
DOI: 10.6084/m9.figshare.7507190
title: Hipsometric, Volumetric and Growth Equations for Khaya ivorensis, Planted in Pirapora

description: ABSTRACT The present study aimed to provide hipsometric, volumetric and growth prediction equations for Khaya ivorensis species. To adjust the height equations we used data with total height and diameter at 1.3 meters collected in the city of Pirapora. For volumetric equations, we performed the scaling of 21 standing trees in the same planting. The growth equations were estimated with volume per hectare of 10 parcels, with age between 30 and 59 months. The volume calculation was performed following the method of Smalian. The adjusted equations showed satisfactory statistics, however lower than the other most widespread crops such as Eucalyptus. But in the face of the lack of technical information about the African Mahogany, this work has contributed significantly to the state of the art of the mentioned plant.
DOI: 10.6084/m9.figshare.7510883
title: Market Behavior for in Shell Brazil Nuts Produced in Brazil from 2000 to 2010

description: ABSTRACT This paper aimed to analyze the market behavior of in shell Brazil nuts produced by Brazil during the period of 2000 to 2010. In order to do it, structural brakes in the data were identified, the existence of correlations between the variables price, quantity and value was investigated; and the shift of the supply and demand curves was described for the nuts production. The trend model was used to identify the direction of the shift, by calculating the growth rates of national prices and of produced quantities. When analyzing the whole period (2000-2010), there was a positive shift of the demand curve, but when separately analyzing the two sub periods defined by the Chow test (2000-2005 and 2006-2010), a negative shift of the supply curve was identified on the first sub period, while the second subperiod revealed a positive shift of the supply curve. The results showed that the market of Brazil nuts is ascending and that the government’s incentive policies to the activity were effective.
DOI: 10.6084/m9.figshare.7510883.v1
title: Market Behavior for in Shell Brazil Nuts Produced in Brazil from 2000 to 2010

description: ABSTRACT This paper aimed to analyze the market behavior of in shell Brazil nuts produced by Brazil during the period of 2000 to 2010. In order to do it, structural brakes in the data were identified, the existence of correlations between the variables price, quantity and value was investigated; and the shift of the supply and demand curves was described for the nuts production. The trend model was used to identify the direction of the shift, by calculating the growth rates of national prices and of produced quantities. When analyzing the whole period (2000-2010), there was a positive shift of the demand curve, but when separately analyzing the two sub periods defined by the Chow test (2000-2005 and 2006-2010), a negative shift of the supply curve was identified on the first sub period, while the second subperiod revealed a positive shift of the supply curve. The results showed that the market of Brazil nuts is ascending and that the government’s incentive policies to the activity were effective.
DOI: 10.6084/m9.figshare.7508558
title: Characterization and Genetic Divergence of Casearia grandiflora Populations in the Cerrado of Piaui State, Brazil

description: ABSTRACT Casearia grandiflora (Salicaceae) is a species typical of the savanna of Piaui state. Knowledge about its genetic diversity is of great importance to establish practices and strategies of biological conservation. This study aimed to characterize C.grandiflora diversity in two areas of savanna. Fifteen quantitative descriptors were analyzed trough measurement of steam, leaf, fruit and seed, followed by multivariate analysis (principal component and grouping). Both principal component analysis and grouping methods showed similarities in plant association, which contribute to the knowledge on patterns of phenotypic variation and species divergence, with the greatest genetic diversity variation found within the populations. The results provide important information because descriptions of morphologic characterization and genetic diversity of this species are still limited in the specific literature.
DOI: 10.6084/m9.figshare.7508558.v1
title: Characterization and Genetic Divergence of Casearia grandiflora Populations in the Cerrado of Piaui State, Brazil

description: ABSTRACT Casearia grandiflora (Salicaceae) is a species typical of the savanna of Piaui state. Knowledge about its genetic diversity is of great importance to establish practices and strategies of biological conservation. This study aimed to characterize C.grandiflora diversity in two areas of savanna. Fifteen quantitative descriptors were analyzed trough measurement of steam, leaf, fruit and seed, followed by multivariate analysis (principal component and grouping). Both principal component analysis and grouping methods showed similarities in plant association, which contribute to the knowledge on patterns of phenotypic variation and species divergence, with the greatest genetic diversity variation found within the populations. The results provide important information because descriptions of morphologic characterization and genetic diversity of this species are still limited in the specific literature.
DOI: 10.6084/m9.figshare.7518413
title: Silvicultural Performance of Tectona grandis L.f. at Different Spacings in Caceres, Mato Grosso State, Brazil

description: ABSTRACT Teak meets the main criteria for selection of tree species for timber production of rapid growth. Thus choosing the proper spacing will provide the largest volume per area and stems with desirable quality. The objective of this study was to evaluate the effect of spacing in several dendrometric variables in stands of teak in Caceres, Mato Grosso state. The following variables were assessed at the ages of 11 and 16 years: diameter at breast height (DBH), total height, basal area, total volume per tree, volume per hectare, annual average growth, and survival. It was observed that the lower the density of trees, the greater the DAP and the individual volume; and that the greater the density, the greater the basal area and the total volume per hectare. Lack of thinning negatively affected the dendrometric averages and the production of stands at different spacings.
DOI: 10.6084/m9.figshare.7518413.v1
title: Silvicultural Performance of Tectona grandis L.f. at Different Spacings in Caceres, Mato Grosso State, Brazil

description: ABSTRACT Teak meets the main criteria for selection of tree species for timber production of rapid growth. Thus choosing the proper spacing will provide the largest volume per area and stems with desirable quality. The objective of this study was to evaluate the effect of spacing in several dendrometric variables in stands of teak in Caceres, Mato Grosso state. The following variables were assessed at the ages of 11 and 16 years: diameter at breast height (DBH), total height, basal area, total volume per tree, volume per hectare, annual average growth, and survival. It was observed that the lower the density of trees, the greater the DAP and the individual volume; and that the greater the density, the greater the basal area and the total volume per hectare. Lack of thinning negatively affected the dendrometric averages and the production of stands at different spacings.
DOI: 10.6084/m9.figshare.7508462
title: Effect of Temperature and KNO3 in the Germination of Acnistus arborescens (Solanaceae)

description: ABSTRACT The propagation of Acnistus arborescens (fruto-do-sabiá) is usually made using cuttings, because the germination percentage of this species is low. The objective of this work was to study the effect of temperature and potassium nitrate (KNO3) stimulant on the germination of fruto-do-sabiá. The experiment was conducted under four temperature regimes (20, 25, 30 and 20-30 °C), with and without potassium nitrate, in a completely randomized design with four replications of 50 seeds each. The percentage, speed index, and average time of germination were evaluated. Under constant temperatures, KNO3 improved germination, with the highest percentages (&gt;68%) obtained at the temperatures of 20 and 25 °C. The alternating temperature of 20-30 °C was effective in overcoming seed dormancy without addition of KNO3; therefore, besides the vegetative propagation, the production of seedlings from seeds is viable.
DOI: 10.6084/m9.figshare.7508462.v1
title: Effect of Temperature and KNO3 in the Germination of Acnistus arborescens (Solanaceae)

description: ABSTRACT The propagation of Acnistus arborescens (fruto-do-sabiá) is usually made using cuttings, because the germination percentage of this species is low. The objective of this work was to study the effect of temperature and potassium nitrate (KNO3) stimulant on the germination of fruto-do-sabiá. The experiment was conducted under four temperature regimes (20, 25, 30 and 20-30 °C), with and without potassium nitrate, in a completely randomized design with four replications of 50 seeds each. The percentage, speed index, and average time of germination were evaluated. Under constant temperatures, KNO3 improved germination, with the highest percentages (&gt;68%) obtained at the temperatures of 20 and 25 °C. The alternating temperature of 20-30 °C was effective in overcoming seed dormancy without addition of KNO3; therefore, besides the vegetative propagation, the production of seedlings from seeds is viable.