Publicações - ciências agrárias
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Thomas Bruno Michelon;
FELIPE SERRATO DOS SANTOS;
Andreza Cerioni Belniaki;
Elisa Serra Negra Vieira;
Maristela Panobianco
Palavra-chave:
ANALISE
Áreas do conhecimento:
CIENCIAS_AGRARIAS; Tecnologia de Alimentos
resumo ...
ABSTRACT: The species Pinus taeda is largely used in intensive silviculture worldwide. This...
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SANTOS, MICAEL MOREIRA;
CACHOEIRA, JADER NUNES;
Antonio Carlos Batista;
REZENDE, EDUARDO HENRIQUE;
COELHO, MARIA CRISTINA BUENO;
GIONGO, MARCOS
Palavra-chave:
PRESCRIBED BURNING;
fire management;
brazilian wildfires
Áreas do conhecimento:
CIENCIAS_AGRARIAS; Recursos Florestais e Engenharia Florestal; Conservação da Natureza; Controle de incêndios florestais;
CIENCIAS_AGRARIAS; Recursos Florestais e Engenharia Florestal; Conservação da Natureza; Recuperação de Areas Degradadas;
CIENCIAS_AGRARIAS; Recursos Florestais e Engenharia Florestal; Silvicultura; Fisiologia Florestal
resumo ...
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TUYTTENS, FRANK A. M.;
Carla Forte Maiolino Molento;
BENAISSA, SAID
Palavra-chave:
animal well-being;
Automation;
digital agriculture;
Ethics;
internet of things;
Sensor
resumo ...
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Adelaide Hercília Pescatori Silva;
Marina Sucha Haidemann;
Adelaide Hercília Pescatori Silva;
Adelaide Hercília Pescatori Silva;
Adelaide Hercília Pescatori Silva
Journal of Veterinary Behavior-Clinical Applications and Research,
v. 47,
n. 1,
p. 93-98,
2022
Home page
Palavra-chave:
análise acústica;
parâmetros acústicos;
Bem estar animal;
sinais comportamentais;
avaliação de emoção;
comunicação vocal
Áreas do conhecimento:
CIENCIAS_AGRARIAS; Tecnologia de Alimentos
resumo ...
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VIEIRA, RAFAEL F.C.;
FERRARI, LARISSA D.R.;
GONÇALVES, LUIZ R.;
SANCHES, GUSTAVO S.;
ANDRÉ, MARCOS R.;
VIEIRA, THÁLLITHA S.W.J.;
SANTOS, NELSON J.R.;
VALENTE, JESSICA D.M.;
SANTOS, LEONARDO P.;
LANGE, ROGÉRIO R.;
Juan Carlos Duque;
FERRARI, MARCOS V.;
BARROS FILHO, IVAN R.;
COLLERE, FLÁVIA C.M.
Palavra-chave:
Mycoplasma;
capybara;
hemoplasma
Áreas do conhecimento:
CIENCIAS_AGRARIAS; Medicina Veterinária Preventiva; Doenças Parasitárias de Animais;
CIENCIAS_AGRARIAS; Medicina Veterinária; Medicina Veterinária Preventiva; Doenças Parasitárias de Animais
resumo ...
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Jefferson Gustavo Martins;
Luiz Eduardo Soares de Oliveira;
WEINGAERTNER, DANIEL;
BARISON, ANDERSSON;
OLIVEIRA, GERLON A. R.;
LIÃO, LUCIANO M.
Palavra-chave:
pattern recognition;
Gender plant classification;
feature selection
resumo ...
Forests have been disorderly exploited, and many species are considered endangered. Some initiatives have been taken in order to prevent forests from being destroyed. A good alternative would be to plan a spatial distribution of plants, with higher number of females than males. Determining the gender of seedlings would provide important information for a possible strategy. Another common problem that researchers in this field very often face, in order to perform their experiments, is the lack of a representative database. To overcome this difficulty, we introduce a new database in this work, which is composed of nuclear magnetic resonance of adult Araucaria angustifolia plants. In order to gain better insight into this database, we have tested different strategies and classifiers. A first set of experiments took three classifiers trained to discriminate males from females considering the original database. A second round of experiments applied the genetic algorithm technique to select subsets of attributes based on single-objective and two-objective functions. After analyzing the achieved results, we have also proposed a new strategy based on statistical measures for selecting subsets from the attributes. A comprehensive set of experiments has shown that the proposed selecting strategy has achieved better performances, with an accuracy of 80.3% (AUC = 79.4). We believe that researchers will find this database a useful tool in their work on determining the Araucaria angustifolia gender. On the other hand, the proposed selecting strategy would be useful for reducing the complexity of databases and accelerating the process of building classification models.
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CANETTI, ALINE;
BRAZ, EVALDO MUÑOZ;
DE MATTOS, PATRÍCIA PÓVOA;
BASSO, RENATO OLIVIR;
Afonso Figueiredo Filho
Palavra-chave:
Dendrochronology;
Forest modeling;
Minimum felling diameter
Áreas do conhecimento:
CIENCIAS_AGRARIAS; Recursos Florestais e Engenharia Florestal; Manejo Florestal; Dendrometria e Inventário Florestal
resumo ...
We presented a method to determine the optimal wood production in Amazon forest. The database that feeds the procedure is faster to obtain when compared to other methods. The simulations resulted in higher wood volume production when compared to the current management system. Moreover, it avoids overexploiting several species which could occur due to felling trees before maturity. Currently in Brazil, generalized forest law rules the management of the entire set of timber species and typologies. However, it is important to consider dynamics specificity of each species to ensure management sustainability, especially for the Amazon forest with its wide floristic diversity. To develop a procedure to determine which logging diameter would achieve optimal wood production by species, using Apuleia leiocarpa (Vogel) J.F. Macbr., Erisma uncinatum Warm., Hymenolobium excelsum Ducke, and Trattinnickia burserifolia Mart. as studying case. Two main methodologies of analysis by species were combined: probability density function (PDF) and growth modeling. The growth models were used to derive the volume increment curves at the individual tree level. To detect the points of maximum annual increment in volume at the population tree level, we used PDF with adjusted growth equations. The population maximum annual volumetric increments occurred in smaller diameters compared to that of the individual level. When combining shorter cutting cycles with the population biological rotation point considered the minimum felling diameter (MFD), we observed higher annual increments in volume than that achieved using the Brazilian law criteria (MFD = 50 cm) or other MFD tested. The procedure proposed may be used by forest managers and forest law-makers, aiming to maximize sustainable wood production in the Amazon forest.
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SILVA, LUCAS C. R.;
BARBOSA, JULIERME ZIMMER;
Vander de Freitas de Melo;
YOUNG, SCOTT D.;
BROADLEY, MARTIN R.;
SANTOS, ROBERTO VENTURA;
CORRÊA, RODRIGO STUDART;
WRIGHT, JAMIE L.;
BOMFIM, BARBARA;
HENDRICKS, LAUREN;
GAVIN, DANIEL G.;
MUNIZ, ALEKSANDER WESTPHAL;
MARTINS, GILVAN COIMBRA;
Motta, Antonio Carlos Vargas
Palavra-chave:
Terras Pretas de Índio
Áreas do conhecimento:
CIENCIAS_AGRARIAS; Agronomia; Ciência do Solo; Fertilidade do Solo e Adubação
resumo ...
Amazonian Dark Earths (ADEs) are unusually fertile soils characterised by elevated concentrations of microscopic charcoal particles, which confer their distinctive colouration. Frequent occurrences of pre-Columbian artefacts at ADE sites led to their ubiquitous classification as Anthrosols (soils of anthropic origin). However, it remains unclear how indigenous peoples created areas of high fertility in one of the most nutrient-impoverished environments on Earth. Here, we report new data from a well-studied ADE site in the Brazilian Amazon, which compel us to reconsider its anthropic origin. The amounts of phosphorus and calcium—two of the least abundant macronutrients in the region—are orders of magnitude higher in ADE profiles than in the surrounding soil. The elevated levels of phosphorus and calcium, which are often interpreted as evidence of human activity at other sites, correlate spatially with trace elements that indicate exogenous mineral sources rather than in situ deposition. Stable isotope ratios of neodymium, strontium, and radiocarbon activity of microcharcoal particles also indicate exogenous inputs from alluvial deposition of carbon and mineral elements to ADE profiles, beginning several thousands of years before the earliest evidence of soil management for plant cultivation in the region. Our data suggest that indigenous peoples harnessed natural processes of landscape formation, which led to the unique properties of ADEs, but were not responsible for their genesis. If corroborated elsewhere, this hypothesis would transform our understanding of human influence in Amazonia, opening new frontiers for the sustainable use of tropical landscapes going forward. Amazonian Dark Earth is soil that has had mysteriously high fertility since ancient times, despite the fact that surrounding soils have very low nutrients. Here the authors’ use of isotope reconstructions indicate that these soils predate human settlement and could have alluvial and burning origins.
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Selma Barbosa Bastos;
Fabiane Machado Vezzani;
Valentim da Silva;
MARCELO RICARDO DE LIMA
Palavra-chave:
Formação Continuada;
Abordagens autobiográficas;
Narrativas autobiográficas
Áreas do conhecimento:
CIENCIAS_AGRARIAS; Ciência do Solo; Educação em solos
resumo ...
ABSTRACT The teacher’s formative process is developed by a critical reflective response to the paths of life, the profession, and its practices. The teacher’s formative process analysis should consider the process’s objectives (theoretical, practical, and emancipatory), and the dimensions that make up the teacher (person, practices, and profession). As a result, this study aims to introduce the elements that outline the categories stemming from the relationship matrix between the objectives and the dimensions, and use them to analyze a formative [...]
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BASTOS, SELMA BARBOSA;
Vezzani, Fabiane Machado;
valentim da Silva;
LIMA, MARCELO RICARDO DE
Palavra-chave:
Continuing Education;
(auto)biographical approaches;
(auto)biographical narratives;
self-formation;
professional identity
Áreas do conhecimento:
CIENCIAS_AGRARIAS; Educação em Solos
resumo ...
ABSTRACT The teacher’s formative process is developed by a critical reflective response to the paths of life, the profession, and its practices. The teacher’s formative process analysis should consider the process’s objectives (theoretical, practical, and emancipatory), and the dimensions that make up the teacher (person, practices, and profession). As a result, this study aims to introduce the elements that outline the categories stemming from the relationship matrix between the objectives and the dimensions, and use them to analyze a formative [...]
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