cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.19903960
title: Fish fauna in low-order streams of the Piquiri River, Upper Paraná River basin, Brazil

description: Abstract The South America ichthyofauna encompasses the highest diversity of the world, however is highly threatened by anthropogenic actions. The fish fauna of nine low-order streams, tributaries of the Piquiri River and impacted by aquaculture, agriculture and urbanization were sampled in the present study. Samplings were done quarterly from December 2017 to September 2018 at three sites in each stream, using a portable electric fishing device in 50-meter segments. A total of 14,507 individuals were collected, belonging to six orders, 20 families, 46 genera, and 70 species. The highest richness and abundance were found for the orders Characiformes and Siluriformes. In this study, nine species that had not been recorded were found, totaling 163 for the basin. In addition, 14 non-native species were captured. The presented list of species contributes to the existing database of ichthyofauna distribution in Neotropical streams, denoting that it is underestimated in the region, mainly in low-order tributaries. The present study reinforces the importance of inventories and monitoring in environments with high biodiversity and sensitive to anthropogenic actions.
DOI: 10.6084/m9.figshare.19903960.v1
title: Fish fauna in low-order streams of the Piquiri River, Upper Paraná River basin, Brazil

description: Abstract The South America ichthyofauna encompasses the highest diversity of the world, however is highly threatened by anthropogenic actions. The fish fauna of nine low-order streams, tributaries of the Piquiri River and impacted by aquaculture, agriculture and urbanization were sampled in the present study. Samplings were done quarterly from December 2017 to September 2018 at three sites in each stream, using a portable electric fishing device in 50-meter segments. A total of 14,507 individuals were collected, belonging to six orders, 20 families, 46 genera, and 70 species. The highest richness and abundance were found for the orders Characiformes and Siluriformes. In this study, nine species that had not been recorded were found, totaling 163 for the basin. In addition, 14 non-native species were captured. The presented list of species contributes to the existing database of ichthyofauna distribution in Neotropical streams, denoting that it is underestimated in the region, mainly in low-order tributaries. The present study reinforces the importance of inventories and monitoring in environments with high biodiversity and sensitive to anthropogenic actions.
DOI: 10.6084/m9.figshare.19903961
title: Leguminosae tree species diversity in coastal forests of Rio de Janeiro, Brazil

description: Abstract: This study investigated the current Leguminosae tree species composition in coastal forests over lithosoil soil or sandy plains in the eastern and central portion of Rio de Janeiro state, Brazil. A comparative study between the Atlantic Forest areas of the Southeast Region of Brazil was conducted to evaluate the influence of environmental variables on floristic differentiation. A total of 34 areas of the Southeast Region was selected from the NeoTropTree platform and the Leguminosae species in these areas were the basis for a similarity analysis. The Jaccard Similarity Index and the UPGMA method were applied for grouping analysis. The relationships between the Leguminosae species composition and the environmental variables were investigated via Cannonical Correspondance Analysis (CCA). The cluster analysis showed that the Leguminosae tree species group of this portion of Rio de Janeiro coastline share floristic affinity with seasonal forests, a result confirmed by CCA. This floristic differentiation is sustained by an exclusive group of Leguminosae species established over lithosoils or sandy plains, and signals that the extent of dry forests in Rio de Janeiro state might be larger than currently stated. The results justify distinct conservation actions in view of the floristic singularities of these areas.
DOI: 10.6084/m9.figshare.19903961.v1
title: Leguminosae tree species diversity in coastal forests of Rio de Janeiro, Brazil

description: Abstract: This study investigated the current Leguminosae tree species composition in coastal forests over lithosoil soil or sandy plains in the eastern and central portion of Rio de Janeiro state, Brazil. A comparative study between the Atlantic Forest areas of the Southeast Region of Brazil was conducted to evaluate the influence of environmental variables on floristic differentiation. A total of 34 areas of the Southeast Region was selected from the NeoTropTree platform and the Leguminosae species in these areas were the basis for a similarity analysis. The Jaccard Similarity Index and the UPGMA method were applied for grouping analysis. The relationships between the Leguminosae species composition and the environmental variables were investigated via Cannonical Correspondance Analysis (CCA). The cluster analysis showed that the Leguminosae tree species group of this portion of Rio de Janeiro coastline share floristic affinity with seasonal forests, a result confirmed by CCA. This floristic differentiation is sustained by an exclusive group of Leguminosae species established over lithosoils or sandy plains, and signals that the extent of dry forests in Rio de Janeiro state might be larger than currently stated. The results justify distinct conservation actions in view of the floristic singularities of these areas.
DOI: 10.6084/m9.figshare.19903973
title: Biomass production of the aquatic macrophyte Ceratopteris pteridoides (Hook.) Hieron (Pteridaceae) in nutrient addition treatments

description: ABSTRACT Aquatic macrophytes are a key group in flooded areas due to their high primary productivity, and several species present in the Amazonian floodplains have potential for human food use. This study evaluated biomass production and nutrient levels in fronds of Ceratopteris pteridoides (Pteridaceae), under the following nutritional treatments: (T1) artesian well water, (T2) natural lake water, and (T3) artesian well water with a nutritive solution. Each replicate had 25 plants of 25 g total fresh biomass each. The experiment lasted for 35 days and total fresh biomass weight, root system length, leaf dry biomass weight, root dry biomass weight and sprout number were assessed. The plants from T3 had the greatest increase in total fresh biomass with an average of 430.02 g, showing that the nutritive solution used in the experiment provided the best conditions for plant growth. The daily ingestion of C. pteridoides could contribute to mineral supplementation, in addition to diversifying existing crops and contributing to sustainable agriculture.
DOI: 10.6084/m9.figshare.19903973.v1
title: Biomass production of the aquatic macrophyte Ceratopteris pteridoides (Hook.) Hieron (Pteridaceae) in nutrient addition treatments

description: ABSTRACT Aquatic macrophytes are a key group in flooded areas due to their high primary productivity, and several species present in the Amazonian floodplains have potential for human food use. This study evaluated biomass production and nutrient levels in fronds of Ceratopteris pteridoides (Pteridaceae), under the following nutritional treatments: (T1) artesian well water, (T2) natural lake water, and (T3) artesian well water with a nutritive solution. Each replicate had 25 plants of 25 g total fresh biomass each. The experiment lasted for 35 days and total fresh biomass weight, root system length, leaf dry biomass weight, root dry biomass weight and sprout number were assessed. The plants from T3 had the greatest increase in total fresh biomass with an average of 430.02 g, showing that the nutritive solution used in the experiment provided the best conditions for plant growth. The daily ingestion of C. pteridoides could contribute to mineral supplementation, in addition to diversifying existing crops and contributing to sustainable agriculture.
DOI: 10.6084/m9.figshare.19903987
title: ABSORPTIVE CAPACITY, INNOVATION, AND EXTERNAL SOURCES OF KNOWLEDGE: THE BRAZILIAN POWER SECTOR

description: ABSTRACT Purpose: This paper discusses the relationship between absorptive capacity, external sources of knowledge, and innovation in the context of the power sector. In doing so, we follow the theoretical debate over absorptive capacity dimensions. We focus on the statistical testing of Zahra and George’s (2002) absorptive capacity construct to identify whether their dimensions find support in reality. We consider that the external environment encompasses both scientific and industrial sources of knowledge, which influence absorptive capacity. Originality/value: Zahra and George’s (2002) model initiated the debate of the absorptive capacity dimensions, and it is disseminated in literature. However, it is poorly tested. There is still a research gap related to the empirical validation stage of the absorptive capacity construct itself. Our research tries to decrease this gap, testing Zahra and George’s (2002) absorptive capacity construct in a Brazilian company’s context. Design/methodology/approach: The research design was quantitative. A survey was applied to 402 industrial firms. We used multivariate sta tistical techniques and the structural models were tested by Partial Least Squares (PLS). Findings: Zahra and George’s (2002) construct of absorptive capacity was proved, and innovation, as well as the external sources types of knowledge, are related to it. The absorptive capacity is contingent on types of external knowledge.
DOI: 10.6084/m9.figshare.19903987.v1
title: ABSORPTIVE CAPACITY, INNOVATION, AND EXTERNAL SOURCES OF KNOWLEDGE: THE BRAZILIAN POWER SECTOR

description: ABSTRACT Purpose: This paper discusses the relationship between absorptive capacity, external sources of knowledge, and innovation in the context of the power sector. In doing so, we follow the theoretical debate over absorptive capacity dimensions. We focus on the statistical testing of Zahra and George’s (2002) absorptive capacity construct to identify whether their dimensions find support in reality. We consider that the external environment encompasses both scientific and industrial sources of knowledge, which influence absorptive capacity. Originality/value: Zahra and George’s (2002) model initiated the debate of the absorptive capacity dimensions, and it is disseminated in literature. However, it is poorly tested. There is still a research gap related to the empirical validation stage of the absorptive capacity construct itself. Our research tries to decrease this gap, testing Zahra and George’s (2002) absorptive capacity construct in a Brazilian company’s context. Design/methodology/approach: The research design was quantitative. A survey was applied to 402 industrial firms. We used multivariate sta tistical techniques and the structural models were tested by Partial Least Squares (PLS). Findings: Zahra and George’s (2002) construct of absorptive capacity was proved, and innovation, as well as the external sources types of knowledge, are related to it. The absorptive capacity is contingent on types of external knowledge.
DOI: 10.6084/m9.figshare.19903999
title: Covid-19: e-Learning as a tool for improving the knowledge

description: Abstract: Introduction: Preventing and fighting COVID-19 are of the utmost importance. In this context, the importance of using telemedicine tools has grown, including teleconsultations, epidemiological telemonitoring, remote diagnosis, support, and training of health professionals. Objective: This article aims to report the results of a distance-training course on SARS-CoV-2 and COVID-19. We analyze the course adherence, the students’ profile, pre, and post-test proficiency index and satisfaction with the course. Methods: This is a cross-sectional study that evaluated data from the course on SARS-CoV-2 and COVID-19. The data were analyzed in terms of distribution and comparisons of means and frequencies. A paired t-test was used to compare the pre and post-test grades. A p-value &lt;0.05 was considered significant. Data were collected from the Moodle teaching platform, without identifying the participants. Results: From March 23 to May 14, the course was offered to 1,008 medical students and health care providers. Most were from the state of Minas Gerais, some from other Brazilian states, and Mozambique. The majority completed the course, with an 89.8% adherence. The evaluations related to the course, the tutors, the degree of satisfaction, and the security for the professional performance after the course obtained maximum scores. The comparison between the pre and post grades showed proficiency gain (p&lt;0.0001). Conclusion: The course has contributed to the training of medical students and health professionals from Brazil and Mozambique. The organizing committee was able to prepare students and provide knowledge to professionals with difficulty to access good technical and evidence-based information. After the training, the students were selected to work on university projects aiming at supporting city halls, health departments, and the community.
DOI: 10.6084/m9.figshare.19903999.v1
title: Covid-19: e-Learning as a tool for improving the knowledge

description: Abstract: Introduction: Preventing and fighting COVID-19 are of the utmost importance. In this context, the importance of using telemedicine tools has grown, including teleconsultations, epidemiological telemonitoring, remote diagnosis, support, and training of health professionals. Objective: This article aims to report the results of a distance-training course on SARS-CoV-2 and COVID-19. We analyze the course adherence, the students’ profile, pre, and post-test proficiency index and satisfaction with the course. Methods: This is a cross-sectional study that evaluated data from the course on SARS-CoV-2 and COVID-19. The data were analyzed in terms of distribution and comparisons of means and frequencies. A paired t-test was used to compare the pre and post-test grades. A p-value &lt;0.05 was considered significant. Data were collected from the Moodle teaching platform, without identifying the participants. Results: From March 23 to May 14, the course was offered to 1,008 medical students and health care providers. Most were from the state of Minas Gerais, some from other Brazilian states, and Mozambique. The majority completed the course, with an 89.8% adherence. The evaluations related to the course, the tutors, the degree of satisfaction, and the security for the professional performance after the course obtained maximum scores. The comparison between the pre and post grades showed proficiency gain (p&lt;0.0001). Conclusion: The course has contributed to the training of medical students and health professionals from Brazil and Mozambique. The organizing committee was able to prepare students and provide knowledge to professionals with difficulty to access good technical and evidence-based information. After the training, the students were selected to work on university projects aiming at supporting city halls, health departments, and the community.
DOI: 10.5281/zenodo.6587156
title: Simulation Parameters for Two Cooperative Binding Sites Sensitize PI(4,5)P2 Recognition by the Tubby Domain

description: Dataset to perform the coarse-grained MD simulations presented in "Two cooperative binding sites sensitize PI(4,5)P2 recognition by the tubby domain". The dataset includes protein structures and GROMACS simulation files such as mdp, itp, gro, and index files for the tubby domain as well as PLC-delta1 PH domain.
DOI: 10.5281/zenodo.6587155
title: Simulation Parameters for Two Cooperative Binding Sites Sensitize PI(4,5)P2 Recognition by the Tubby Domain

description: Dataset to perform the coarse-grained MD simulations presented in "Two cooperative binding sites sensitize PI(4,5)P2 recognition by the tubby domain". The dataset includes protein structures and GROMACS simulation files such as mdp, itp, gro, and index files for the tubby domain as well as PLC-delta1 PH domain.
DOI: 10.6084/m9.figshare.19904003.v1
title: Advances in the knowledge of the natural history of aquatic plants in the Neotropics

description: ABSTRACT Until the mid-XX century, little awareness on the ecological services or socio-environmental problems and benefits related to aquatic plants culminated in bottlenecks on their natural history, especially for the Neotropics. In this context, Acta Botanica Brasilica (ABB) organized this special issue to promote the advancement of knowledge on this ecological group in the Neotropics, supported by Sociedade Botânica do Brasil’s group of aquatic plants specialists. We selected and evaluated manuscripts gathering unprecedented findings, resulting from studies on aquatic plants, with little investigated or documented approaches, such as the improper use of methodological paradigms and aspects of biogeography, ecophysiology, morphoanatomy, structuration of communities, functional ecology, and human use. Here we present a synthesis of these reports’ findings that shall contribute to deepening the knowledge on the natural history, sustainable use, and conservation of aquatic plants and guide future research, mainly in Neotropical aquatic ecosystems. The publication of special issues on themes with insufficient knowledge to Science can reduce such gaps and expand the journal’s perspectives. Therefore, we believe that this special issue of ABB will boost the understanding of aquatic plants’ natural history as much as incentivizing journals with specific scopes of the area of Plant Biology to similar initiatives.
DOI: 10.6084/m9.figshare.19904003
title: Advances in the knowledge of the natural history of aquatic plants in the Neotropics

description: ABSTRACT Until the mid-XX century, little awareness on the ecological services or socio-environmental problems and benefits related to aquatic plants culminated in bottlenecks on their natural history, especially for the Neotropics. In this context, Acta Botanica Brasilica (ABB) organized this special issue to promote the advancement of knowledge on this ecological group in the Neotropics, supported by Sociedade Botânica do Brasil’s group of aquatic plants specialists. We selected and evaluated manuscripts gathering unprecedented findings, resulting from studies on aquatic plants, with little investigated or documented approaches, such as the improper use of methodological paradigms and aspects of biogeography, ecophysiology, morphoanatomy, structuration of communities, functional ecology, and human use. Here we present a synthesis of these reports’ findings that shall contribute to deepening the knowledge on the natural history, sustainable use, and conservation of aquatic plants and guide future research, mainly in Neotropical aquatic ecosystems. The publication of special issues on themes with insufficient knowledge to Science can reduce such gaps and expand the journal’s perspectives. Therefore, we believe that this special issue of ABB will boost the understanding of aquatic plants’ natural history as much as incentivizing journals with specific scopes of the area of Plant Biology to similar initiatives.
DOI: 10.6084/m9.figshare.19904012
title: Response of rhizomes of the invasive Hedychium coronarium J. König (Zingiberaceae) to different soil moisture conditions

description: ABSTRACT The ability to maintain high competitiveness under a wide range of conditions is common among successful invasive species. The performance of rhizomatous macrophytes in different habitats is closely related to morphological and physiological adaptations in the rhizome system. We investigated the effects of soil moisture conditions on the microstructure of rhizomes of Hedychium coronarium (Zingiberaceae), an aggressive invader of Neotropical riparian sites. We collected rhizome fragments of H. coronarium and soil samples in wet and dry regions of riparian areas dominated by this species in southeastern Brazil. We measured soil moisture content gravimetrically and rhizome fragments were fixed, sectioned, and stained for histological analysis. Only rhizomes from wet regions exhibited aerenchyma, whereas amyloplasts were much more abundant and larger in rhizomes from dry regions than in rhizomes from wet regions. Even though low starch content in wet soils indicates the occurrence of anaerobic metabolism, the presence of aerenchyma may contribute to the typically high performance of H. coronarium in waterlogged soils. Although further studies are needed to assess how responses at the rhizome level affect the competitive ability of H. coronarium, our findings show that they may play a role in the dominance of this species in Neotropical riparian sites.
DOI: 10.6084/m9.figshare.19904012.v1
title: Response of rhizomes of the invasive Hedychium coronarium J. König (Zingiberaceae) to different soil moisture conditions

description: ABSTRACT The ability to maintain high competitiveness under a wide range of conditions is common among successful invasive species. The performance of rhizomatous macrophytes in different habitats is closely related to morphological and physiological adaptations in the rhizome system. We investigated the effects of soil moisture conditions on the microstructure of rhizomes of Hedychium coronarium (Zingiberaceae), an aggressive invader of Neotropical riparian sites. We collected rhizome fragments of H. coronarium and soil samples in wet and dry regions of riparian areas dominated by this species in southeastern Brazil. We measured soil moisture content gravimetrically and rhizome fragments were fixed, sectioned, and stained for histological analysis. Only rhizomes from wet regions exhibited aerenchyma, whereas amyloplasts were much more abundant and larger in rhizomes from dry regions than in rhizomes from wet regions. Even though low starch content in wet soils indicates the occurrence of anaerobic metabolism, the presence of aerenchyma may contribute to the typically high performance of H. coronarium in waterlogged soils. Although further studies are needed to assess how responses at the rhizome level affect the competitive ability of H. coronarium, our findings show that they may play a role in the dominance of this species in Neotropical riparian sites.
DOI: 10.6084/m9.figshare.19904014
title: Breaking the misconception of a dry and lifeless semiarid region: the diversity and distribution of aquatic flora in wetlands of the Brazilian Northeast

description: ABSTRACT The semiarid region of northeastern Brazil possesses a set of wetlands characterized by hydrographic basins with deficient drainage networks, a few large and permanent lotic systems and several permanent and temporary lagoons. Aquatic plants are widely distributed in these wetlands and the present study aims to determine if those of Ceará state have similar species compositions and differences in species richness. We hypothesized that lentic ecosystems would have more species and different growth forms of aquatic angiosperms than lotic ecosystems. A total of 1619 records of aquatic angiosperms in 43 wetland areas were analysed. The most representative families were Cyperaceae, Poaceae, Fabaceae, Alismataceae, Malvaceae, Nymphaeaceae and Pontederiaceae. Most of the species are helophytes and bottom-rooted emergent hydrophytes. Permanent lentic ecosystems had the highest number of exclusive species (27.85 %), followed by temporary lentic ecosystems (20.54 %). Contrary to our hypothesis, the different aquatic ecosystems were found to possess distinct species compositions and different proportions of growth forms, and all wetland types contributed to the macrophyte richness of the study area, although they differ in species richness. Therefore, conservation plans for the native aquatic macrophyte biota should include all wetland ecosystems in the semiarid state of Ceará.