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Este trabalho objetivou comparar o volume de árvores de mogno africano estimado pelo modelo de Schumacher e Hall e por redes neurais artificiais. A coleta de dados ocorreu em dois sistemas agroflorestais no município de Belterra, Pará, com 7 e 11 anos de idade. Em cada local foram cubadas 34 árvores em pé. Para as estimativas de volume comercial foram empregadas as formas do modelo de Schumacher e Hall (linear e não linear) e uso de redes neurais artificiais (RNA) do tipo Multilayers perceptron. As arquiteturas de RNA com 4 neurônios na camada de entrada propiciaram as melhores estimativas e valores de erro, sensivelmente melhores do que os modelos volumétricos, tendo as RNA um erro 36,7% menor que o modelo de Schumacher e Hall não linear. Este último modelo apresentou tendência a superestimar os volumes e a RNA obteve estimativas mais livres de tendências. As redes neurais artificiais geraram estimativas com maior precisão em relação às formas do modelo de regressão. Essa técnica mostrou-se viável, pois uma única rede pode estimar o volume para diferentes locais, dispensando necessidade de estratificação. Made available in DSpace on 2020-08-01T11:13:10Z (GMT). No. of bitstreams: 1 Artigo-Ciencia-da-Madeira-2020.pdf: 417564 bytes, checksum: 3ce24db68d260b77d1ad2a60c206a4d9 (MD5) Previous issue date: 2020

Summary This study compared the monogeneans community in C. monoculus from the Tapajós River (state of Pará) and Jari River (state of Amapá), northern Brazil. A total of 2188 monogeneans belonging to eight taxa were collected from the gills of fish: Gussevia arilla, Gussevia longihaptor, Gussevia tucunarense, Gussevia undulata, Sciadicleithrum ergensi, Sciadicleithrum umbilicum, Sciadicleithrum uncinatum and Tucunarella cichlae. Gussevia arilla was the dominant species for C. monoculus from the Tapajós River basin, while S. umbilicum predominated among the hosts from the Jari River basin. For the two populations of C. monoculus, the prevalence, mean intensity and mean abundance of monogeneans were different and the of parasites community had a high qualitative similarity (87.5 %). The monogeneans community of C. monoculus was characterized by high species richness, with infection values varying from low to moderate. The geographic distance and differences in environmental characteristics arising from the same did not influence the richness of species of monogeneans infesting C. monoculus in the Tapajós and Jari rivers, but appear to have been determinants in the differences observed in the structure of the monogenean communities in each region.

O presente artigo estabelece procedimentos para avaliação contábil da riqueza compreendida por ativos ambientais terra, floresta e recursos madeireiros distribuídos por ações de reforma agrária na Amazônia, em contexto de conflitos e disputas territoriais. O estudo foi realizado no âmbito de projeto de assentamento ambientalmente diferenciado, localizado em Anapu, Pará: o Projeto de Desenvolvimento Sustentável (PDS) Virola-Jatobá. A mensuração física e monetária de componentes ambientais da riqueza da área estudada se deu pelo método contábil. Foram inicialmente determinados valores, tanto de ativos ambientais considerados de domínio do Estado, quanto daqueles referentes a direitos de uso e exploração dos recursos ambientais concedidos a famílias assentadas. Em seguida, avaliaram-se danos e perdas resultantes da invasão da reserva florestal do assentamento, ocorrida em 2017. A invasão por terceiros resultou em desmatamento, formação de pastagem e extração ilegal de madeira em área na qual era executado um plano de manejo florestal comunitário. A determinação monetária dos danos causados atesta que políticas públicas distributivas não fazem frente à realidade social no campo, na qual assentamentos são impactados e fragilizados por tensões e disputas territoriais e crimes ambientais. A inclusão de novas abordagens teóricas e práticas da contabilidade ambiental em estudos multidisciplinares pode assim contribuir para expandir a compreensão dos fenômenos sociais, ambientais e econômicos inerentes a políticas públicas de inclusão. Made available in DSpace on 2021-05-13T02:24:30Z (GMT). No. of bitstreams: 1 1636-Texto-do-artigo-6099-3-10-20210201.pdf: 1475409 bytes, checksum: b1ed55918a3c738605e289035a6cdce3 (MD5) Previous issue date: 2021

Made available in DSpace on 2020-12-12T02:42:50Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-07-01 Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Protecting riparian vegetation around streams is vital in reducing the detrimental effects of environmental change on freshwater ecosystems and in maintaining aquatic biodiversity. Thus, identifying ecological thresholds is useful for defining regulatory limits and for guiding the management of riparian zones towards the conservation of freshwater biota. Using nationwide data on fish and invertebrates occurring in small Brazilian streams, we estimated thresholds of native vegetation loss in which there are abrupt changes in the occurrence and abundance of freshwater bioindicators and tested whether there are congruent responses among different biomes, biological groups and riparian buffer sizes. Mean thresholds of native vegetation cover loss varied widely among biomes, buffer sizes and biological groups: ranging from 0.5% to 77.4% for fish, from 2.9% to 37.0% for aquatic invertebrates and from 3.8% to 43.2% for a subset of aquatic invertebrates. Confidence intervals for thresholds were wide, but the minimum values of these intervals were lower for the smaller riparian buffers (50 and 100 m) than larger ones (200 and 500 m), indicating that land use should be kept away from the streams. Also, thresholds occurred at a lower percentage of riparian vegetation loss in the smaller buffers, and were critically lower for invertebrates: reducing only 6.5% of native vegetation cover within a 50-m riparian buffer is enough to cross thresholds for invertebrates. Synthesis and applications. The high variability in biodiversity responses to loss of native riparian vegetation suggests caution in the use of a single riparian width for conservation actions or policy definitions nationwide. The most sensitive bioindicators can be used as early warning signals of abrupt changes in freshwater biodiversity. In practice, maintaining at least 50-m wide riparian reserves on each side of streams would be more effective to protect freshwater biodiversity in Brazil. However, incentives and conservation strategies to protect even wider riparian reserves (~100 m) and also taking into consideration the regional context will promote a greater benefit. This information should be used to set conservation goals and to create complementary mechanisms and policies to protect wider riparian reserves than those currently required by the federal law. Departamento de Ecologia Universidade Federal de Goiás (UFG) Instituto de Biociências Universidade Estadual Paulista (UNESP) Instituto Nacional de Pesquisas da Amazônia (INPA) Departamento de Biodiversidade Universidade Federal do Paraná (UFPR) Programa de Pós-Graduação em Tecnologias para o Desenvolvimento Sustentável Universidade Federal de São João Del Rei (UFSJ) Instituto Amazônico de Agriculturas Familiares Universidade Federal do Pará (UFPA) Laboratório de Hidrologia Florestal Escola Superior de Agricultura Luiz de Queiroz Universidade de São Paulo (USP) Instituto de Ciências Biológicas Universidade Federal do Pará (UFPA) Programa de Pós-Graduação em Biologia UNISINOS Departamento de Genética Ecologia e Evolução Instituto de Ciências Biológicas Universidade Federal de Minas Gerais (UFMG) Instituto de Geociências Departamento de Geografia Universidade Federal de Minas Gerais (UFMG) Laboratório de Ecologia e Conservação de Ecossistemas Aquáticos Universidade Federal de Mato Grosso (UFMT) Centro de Engenharias e Ciências Exatas Universidade Estadual do Oeste do Paraná (UNIOESTE) Laboratório de Sistemática e Ecologia de Insetos Departamento de Ciências Agrárias e Biológicas Universidade Federal do Espírito Santo (UFES) Campus de Ciências Exatas e Tecnológicas Universidade Estadual de Goiás (UEG) Departamento de Ecologia Universidade Federal do Rio Grande do Sul (UFRGS) Laboratório de Organismos Aquáticos (LOA) Departamento de Ciências Biológicas Universidade Estadual de Santa Cruz (UESC) Programa de Pós-Graduação em Ecologia e Conservação Universidade Federal do Mato Grosso do Sul (UFMS) Departamento de Entomologia Museu de Entomologia Universidade Federal de Viçosa (UFV) Instituto de Biociências Letras e Ciências Exatas Universidade Estadual Paulista (UNESP) Laboratório de Ecologia e Conservação Departamento de Engenharia Ambiental Universidade Federal do Paraná (UFPR) Programa de Pós Graduação em Biodiversidade (PPGBC) Universidade Federal do Pará (UFPA) Laboratório de Inteligência Artificial Eletrônica de Potência e Sistemas Digitais Universidade Federal de Mato Grosso do Sul (UFMS) Centro Universitário FG (UNIFG) Instituto Federal de Educação Ciencia e Tecnologia do Sul de Minas Gerais (IFSULDEMINAS) Universidade Federal de Alfenas (UNIFAL) Departamento de Biologia Universidade Federal de Lavras (UFLA) Programa de Pós-Graduação em Ecologia de Ambientes Aquáticos Continentais (PEA) Universidade Estadual de Maringá (UEM) Instituto de Ciências e Tecnologia das Águas Universidade Federal do Oeste do Pará (UFOPA) Museu de História Natural Capão da Imbuia (MHNCI) Instituto Nacional de Pesquisa do Pantanal (INPP) Campus Avançado do Museu Paraense Emílio Goeldi (MPEG) Laboratório de Ecologia Centro de Estudos em Recursos Naturais (CERNA) Universidade Estadual de Mato Grosso do Sul (UEMS) Centre for Tropical Biodiversity and Climate Change and Centre for Tropical Environmental and Sustainability Studies College of Marine & Environmental Sciences James Cook University Instituto de Biociências Universidade Estadual Paulista (UNESP) Instituto de Biociências Letras e Ciências Exatas Universidade Estadual Paulista (UNESP) CNPq: 465610/2014-5

Made available in DSpace on 2019-10-06T16:21:07Z (GMT). No. of bitstreams: 0 Previous issue date: 2019-06-01 Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) In the southern Brasília Orogen, slices of an intensively reworked Paleoproterozoic basement occur. These are partially covered by a Neoproterozoic sequence of high-metamorphic grade, corresponding to the Socorro–Guaxupé Nappe and intruded by several Neoproterozoic plutonic rocks. In this contribution, we present thermobarometric and geochronological data of the basement rocks in the Campinas city, southern part of the Brasilia Orogen. The occurrence of mafic granulites included as lenses in mylonitic gneisses is described for the first time in a quarry located in the southern part of Campinas. Petrographic studies revealed high temperature paragenesis composed of orthopyroxene, clinopyroxene, garnet, biotite, and plagioclase. We present thermobarometric results with conditions close to the metamorphic peak, at ca. 8.7–10 kbar and 820–890 °C, which characterize these rocks as medium-pressure mafic granulites. U–]Pb zircon ages of 2134 ± 6 Ma and 2156 ± 6 Ma were obtained for the host gneisses and the mafic granulite, respectively and interpreted as the timing of their igneous crystallization. Metamorphic zircon overgrowths in the mafic granulites show a concordia age of 608 ± 3 Ma. This age is coeval with one of the several episodes of melt crystallization reported in the southern Brasilia Orogen. The Paleoproterozoic ages of ca. 2.15 Ga suggest that the protoliths of the gneisses and granulites in the Campinas region are similar to the rocks of the Pouso Alegre Complex, which represents part of the lower São Francisco plate overthrusted by the Brasilia Orogen during the Neoproterozoic orogenic collage in southeastern Brazil. Departamento de Geologia e Recursos Naturais Instituto de Geociências Universidade Estadual de Campinas (UNICAMP) Instituto de Engenharia e Geociências Universidade Federal do Oeste do Pará (UFOPA) Grupo Estrutural – Pedreira Basalto Departamento de Petrologia e Metalogenia Instituto de Geociências e Ciências Exatas Universidade Estadual Paulista “Júlio de Mesquita Filho” (UNESP) Departamento de Petrologia e Metalogenia Instituto de Geociências e Ciências Exatas Universidade Estadual Paulista “Júlio de Mesquita Filho” (UNESP) CNPq: 304471/2017–8

The energy balance closure obtained through the eddy covariance method is a problem which persists, despite advances in the development and improvement of instruments and recent efforts in the description of corrections and in the characterization of measuring uncertainties. In most places the sum of sensible and latent heat fluxes (H and λE) is less than available energy, i.e. the difference between net radiation (Rn) and soil heat flux (G). This study analyzed the annual and seasonal behavior of the energy partitioning and energy balance closure in the Caatinga Biome, which is a seasonally dry tropical forest located in the semiarid lands of Brazil, using the eddy covariance method. Results showed high seasonal variability in the energy partitioning. During the dry season, approximately 70% of Rn was converted into H and less than 5% of it was converted into latent heat flux (λE). During the wet season, the Rn portion converted into H and λE was similar: ˜ 40%. In annual terms, the Rn portion converted into H and λE was of the order of 50% and 20% respectively. The degree of the energy balance closure varied depending on the method used. When the closure was calculated using orthogonal regressions, the slope varied from 0.87 to 0.90 in 2014 and from 0.92 to 1.00 in 2015. However, when the closure was calculated by the energy balance ratio method, values varied from 0.70 to 0.79 in 2014 and from 0.73 to 0.82 in 2015. The closure was better in 2015 if compared to 2014 possibly due to the more intense turbulence observed in 2015 because friction velocity was higher than in 2014. The better closure in 2015 may also be associated with large eddies, which were more frequent in 2014 as evidenced by the correction coefficients for vertical wind velocity and water vapor and vertical wind velocity and sonic temperature. The energy balance closure was also analyzed considering atmospheric instability conditions and the best results were found under very unstable conditions, while the least expressive results were found under stable conditions. Under these conditions negative values of the energy balance ratio were also observed during dry and transition seasons, indicating that fluxes were reversed during these periods.

Este ensaio é composto por fotografias produzidas pelo pesquisador e principalmente oriundas do acervo pessoal dos interlocutores. Propõe-se a refletir as conexões entre a imagem fotográfica e o processo de constituição de memória coletiva (HALBWACHS, 1968) articuladas por ex-garimpeiros sobre o trabalho e a cotidianidade das relações elaboradas nos garimpos de ouro da região Amazônica, sobretudo os da área do Tapajós, que na década de 1970 e 1980 estiveram em grande efervescência e, pelos quais, os agentes interlocutores viveram por muitos anos de suas vidas.

International audience; This paper presents a three-step approach to enhance interoperability between heterogeneous semantic resources. Firstly, we construct homogeneous representations of these resources in a pivot format, namely OWL DL, with respect to the semantics expressed by the original representation languages. Secondly, mappings are established between concepts of these standardised resources and stored in a so-called articulation ontology. Thirdly, an approach for ranking those mappings is suggested in order to best fit users' needs. This approach is currently being implemented in the Semantic Resources "Interoperabilisation" and Linking System (SRILS). The mapping results as well as the work to be done are discussed.