https://repositorio.ufra.edu.br/jspui/handle/123456789/16 Biblioteca Digital de Teses e Dissertações. 2026-10-19T00:52:45Z https://repositorio.ufra.edu.br/jspui/handle/riufra/2945 Título: Orchidaceae na região insular de Belém, Pará, Amazônia Oriental: diversidade, conservação e uso da terra Autor(es): OLIVEIRA, Marcos da Conceição Abstract: Islands are fundamental for the conservation of species and plant communities, as they represent a model of continental diversity and exhibit high species richness. In the state of Pará, studies on biodiversity in island environments are still incipient. Therefore, the present study aims to document the diversity of Orchidaceae in the insular region of Belém through a floristic–taxonomic survey, including species descriptions, illustrations, photographs, data on geographic and local distribution and habitat, ecological and taxonomic comments, as well as an identification key for the species. An on-site survey of the collections housed in the herbaria HBRA, HCP, HF, HIFPA, IAN, MFS, and MG was conducted, in addition to searches on online platforms. Furthermore, field collections were carried out from June 2024 to December 2025 on the islands of Caratateua, Combu, Cotijuba, Mosqueiro, and Tatuoca. Based on a revisionary analysis, it was verified that land occupation and land-use processes have had a direct impact on territorial dynamics on the islands, promoting colonization and the indiscriminate use of land and forest resources as a result of increasing urbanization and political and social pressures. Nevertheless, 34 species distributed across 23 genera of Orchidaceae were recorded, with emphasis on Maxillaria Ruiz and Pav. (five spp.), Epidendrum L. (four spp.), Catasetum Rich. ex Kunth, Polystachya Hook., and Vanilla Mill. (two spp. each). Encyclia bohnkiana Castro & Campacci is here synonymized under Encyclia thienii Dodson, and a lectotype is designated for E. thienii. The results reinforce the importance of the insular region for the conservation of Amazonian biodiversity in the face of anthropogenic and climatic pressures, and provide crucial data for the development of ecological, biogeographic, and phylogenetic studies. 2026-07-01T00:00:00Z https://repositorio.ufra.edu.br/jspui/handle/riufra/2944 Título: Estabelecimento de leguminosas e atributos físicos, químicos e biológicos do solo sob influência de diferentes manejos de pastejo em Igarapé-açu, Estado do Pará. Autor(es): ABREU, Eliana Maria Acioli de Abstract: In Oriental Amazonia, the growing demand for improvements in productivity and competitiveness in the agricultural sector, the production of low costs supplements, among which are legumes intercropped with grass, is a major step for the development of animal production systems. The main expectation of the use of legumes is the improvement of animal production compared to grass pasture exclusively. The effects of animal distribution and days of grazing rest, are also crucial to maintain the sustainability of livestock production system. Information about its effects on physical, chemical and microbial biomass quality of pastures soil are still rare. The objective of this study was to evaluate the influence of different catle distribution and different days of grazing rest , about the establishment of legumes Flemingia macrophylla and Cratilia argentea, on the physical, chemical and biological attributes of yellow claysoil under a already established pasture of Brachiaria brizantha cv. Marandu, located in Igarapé-Acu, Northeast of Para in function of grazing systems with different animal allotment rate and resting days of the pasture (SPl= 1UA/ha and 56 resting days; SP2= 0,7UA/ha and 28 resting days; SP3= 0,7UA/ha and 56 resting days) and four seasons to sampling (April/2007 — rainy weather; October/2007 — dry weather; April/2008 — rainy weather; October/2008 — dry weather), in the layers 0-10, 10-20, 20-40, 40-60 cm for evaluation of the physical attributes and in the 0-10, 10-20, 20-50 cm for the chemical ones. The biological attributes, were evaluated just in the depth of 0-10 cm. The experimental outlining was blocks by chance with three repetition. The treatment, conform the variable to be evaluated, were distributed in quotas sub and subdivided. Singly, the grazing systems influenced the studied variable. It follows that the handling systems used, did not influenced on the legumes establishment, on the physical and chemical attribute, and on the carbon and nitrogen from the microbial soil biomass though, they showed significant differences on the sample soil depth and on the seasons evaluated. 2026-09-24T00:00:00Z https://repositorio.ufra.edu.br/jspui/handle/riufra/2943 Título: Fatores motivacionais associados à intenção de movimentação de pessoal na Universidade Federal Rural da Amazônia Autor(es): ALMEIDA, Aylana Cristina Lima de Abstract: The objective of this study was to analyze the motivational factors that influence the intention to change positions among faculty and administrative staff (TAEs) at the Federal Rural University of the Amazon (UFRA), considering both the intention to transfer to another position and the intention to leave the institution. The study falls within the research area of Public Administration and Organizations, contributing to the debate on staff retention and mobility in the context of multicampus federal public universities. The theoretical framework of the study integrated the premises of the main classical and contemporary theories of motivation within the field of Public Administration. This is an applied, descriptive study with a quantitative-qualitative approach, utilizing a semi-structured electronic questionnaire administered to a sample of 169 active staff members—including faculty and technical and administrative staff—whose responses were analyzed using Partial Least Squares Structural Equation Modeling (PLS-SEM), multigroup analysis, and content analysis. The results from the overall sample of civil servants demonstrated that the intention to leave temporarily is primarily associated with the physical conditions and physical safety of the work environment, while the intention to leave permanently was not significantly explained by the variables analyzed. The multigroup analysis showed that, among administrative staff, the intention to leave is strongly influenced by limitations in training, development, and education, given the link to career advancement, while among faculty members, structural and academic support constraints are more closely associated with the intention to leave permanently. The qualitative analysis indicated that retention is related to job stability, attachment to work, and interpersonal relationships, whereas departure is linked to weaknesses in infrastructure, management, and institutional working conditions. The originality of this research lies in demonstrating the determinants of internal mobility and departure at a multi-campus university in the Amazon, with a comparison between faculty members and administrative staff. As a practical contribution, the findings offer concrete insights into the formulation of policies regarding human resources management, infrastructure, and professional development, with potential impacts in the organizational, practical, scientific, and public policy spheres. 2026-10-05T00:00:00Z https://repositorio.ufra.edu.br/jspui/handle/riufra/2942 Título: Atributos químicos do solo e crescimento vegetal em latossolo vermelho-amarelo sob reflorestamento com paricá em Tailândia, Pará, Brasil. Autor(es): RODRIGUES, Possidônio Guimarães Abstract: Forestry in the Amazon region appears as promising activity, since the rational management of forests enables the provision of forest resources without the commitment of nature reserves. In the county of Thailand, northeast of Pará, much of the original vegetation has been removed in recent years, and currently these altered areas are being reforested. Through a partnership with the Museu Paraense Emilio Goeldi, timber companies in the region promote research into the sustainability of the process, aiming to prove the efficiency of the systems and techniques used in reforestation. The objective of this proposal to evaluate the influence of tillage systems on productivity of the Paricá (Schizolobium amazonicum Huber ex Ducke)] in forest systems. Therefore, we carried out the chemical characterization of soils altered by timber enterprises undergoing reforestation process with Paricá, and also the assessment of the growth of the culture. The experimental area has three ha belongs to the company GM SUFREDINI INDUSTRIAL LTDA.. The experimental design was completely randomized with three treatments, equivalent to planting systems, S1 [Paricá x Pueraria (Pueraria phaseoloides)], $2 [Paricá x Acacia (Acacia mangium)] and S3 (Paricá single), and three plots, corresponding repetitions. Chemical analyzes of soil were made: pH in water (pH), Total Carbon (C), Total Nitrogen (TN), Potassium (K), calcium (Ca), magnesium (Mg), aluminum (Al) extractables and acidity potential (H+ Al); sampling occurred, collecting four single samples per plot at depths 0-10, 10-20 cm, totaling 24 samples per planting system. To evaluate the development of Paricá was used to measure dendrometric DBH (diameter at breast height 1.30 m). The plants were measured with approximate age of 05 years, being 352 observations per planting system. It was observed higher levels and saturation of exchangeable bases in systems S1 (2,77 cmol, dm³ and 47,86%) and $3 (3,06 cmol, dm³ and 57,53%), suggesting better fertility in relation to the system S2 (1,83 cmol, dm³ and 36,10 %). The system $2 has presented higher exchangeable acidity (0,43 cmol, dm³) and potential acidity (3,47 cmol, dm³), and low nutrient availability. Regarding the diametral growth of the Parica, it was observed a higher average in the system S2 (16,62 cm), however, this system showed a less survival rate (73,86%). 2026-09-30T00:00:00Z