https://tede.unioeste.br/handle/tede/574 2026-09-15T15:13:57Z 2026-09-15T15:13:57Z Ribeiro, Alison Antony https://tede.unioeste.br/handle/tede/8648 2026-09-10T22:30:57Z 2026-05-22T00:00:00Z

Title: Gestão hídrica e desenvolvimento rural sustentável: desenvolvimento de um sistema utilizando georreferenciamento e inteligência artificial para prevenção de erosão em mananciais de abastecimento público Autor: Ribeiro, Alison Antony Primeiro orientador: Corrêia, Arlindo Fabrício Abstract: The intensification of agricultural land use in rural watersheds has increased erosion processes and compromised the quality and availability of water resources, especially in areas dominated by family farming. The aim of this thesis is to develop and validate an integrated methodology based on aerial photogrammetry using Remotely Piloted Aircraft Systems (RPAS), geoprocessing, derived attributes calculated from RGB orthomosaics, artificial intelligence, and independent validation using the Revised Universal Soil Loss Equation (RUSLE), with the goal of identifying areas susceptible to erosion, simulating environmental restoration scenarios, and informing strategies for water management and sustainable rural development. The study was conducted in a 59.24-hectare area located in one of the headwaters of Arroio Fundo, a public water source for the municipality of Marechal Cândido Rondon (PR), situated on the border with the municipality of Quatro Pontes, in western Paraná. The methodology involved the acquisition of multitemporal aerial images via UAV with a spatial resolution of 3.7 cm/pixel, the development of an automated computational pipeline for photogrammetric processing, the generation of derived attributes, the preparation of data for training the neural network, and the semantic classification of land use and land cover. For land use and land cover classification, a U-Net-type convolutional neural network was used, optimized through data augmentation and class weighting strategies, and subsequently integrated with topographic variables to model erosion risk using map algebra. The consistency of the results was verified using the RUSLE. The results of the current scenario assessment (2025) showed that 60.31% of the study area is at high risk of erosion, with 1.61 hectares of active erosion processes identified, for which the average soil loss estimated by RUSLE reached 114.52 t ha⁻¹ year⁻¹. The simulation of the prospective scenario (2035) indicated that the full restoration of Permanent Preservation Areas could completely eliminate areas at critical risk and reduce high-risk areas by 72.8%, with a 319.9% increase in low-risk areas. The proposed integrated methodology is a technical tool with low operational costs, based primarily on free and open-source software, with the potential to be replicated by municipal technical teams and research institutions in similar rural contexts, contributing to territorial planning geared toward sustainable rural development. Publisher: Universidade Estadual do Oeste do Paraná Tipo do documento: Tese

2026-05-22T00:00:00Z Silva, Edson Luis de Carvalho https://tede.unioeste.br/handle/tede/8640 2026-09-02T15:14:29Z 2025-09-09T00:00:00Z

Title: Políticas ambientais, hídricas e sustentabilidade na tríplice fronteira do Alto Rio Solimões Autor: Silva, Edson Luis de Carvalho Primeiro orientador: Roesler, Marli Renate von Borstel Abstract: Water management in the tri-border region of Brazil, Colombia, and Peru presents a significant challenge, particularly given the abundant water resources of the Amazon Basin and the social, environmental, and institutional complexities involved. Despite the abundance of water resources, the region suffers from structural problems such as a lack of basic sanitation, unplanned urban expansion, pollution of water bodies, and vulnerability to extreme weather events. The relevance of the topic is grounded in its direct contribution to the Sustainable Development Goals (SDGs), particularly SDG 6 (Clean Water and Sanitation), which addresses access to clean and safe water; SDG 3 (Good Health and Wellbeing), by highlighting health risks; SDG 13 (Climate Action), given the vulnerability of communities to extreme events; and SDG 17 (Partnerships for the Goals), by reinforcing the importance of international and inter-institutional cooperation in the shared management of water resources. This study aimed to understand the multiple uses of water and its management in the Upper Solimões River region, taking into account the specific characteristics of the three countries involved. The institutional and legal frameworks were analyzed, identifying the actors and social relations that make up the water management network, and the nature of shared uses was evaluated. The research was conducted using a qualitative approach, with an exploratory and descriptive nature. A case study was adopted as the technical procedure, focusing on the municipalities of Tabatinga, Benjamin Constant, and Atalaia do Norte (Brazil), Leticia (Colombia), and Islândia/Santa Rosa Island (Peru). Data collection was carried out in three stages: a review of literature and documents; the identification of local actors and institutions; and in-depth interviews with water management stakeholders. The results demonstrate that, although the Alto Solimões region possesses abundant water resources, it faces serious challenges regarding integrated resource management. An absence of effective governance mechanisms and a deficiency in institutional coordination among the three countries were observed. Environmental management is fragmented, with limited civil society participation and strong pressure on natural resources from private sectors such as fishing. It was found that riverine communities depend directly on water bodies for consumption, hygiene, production, and transport, yet they contend with pollution and waterborne diseases. The thesis concludes that water resource management in the tri-border area requires a cooperative, transboundary approach, involving institutional strengthening, integration among stakeholders, and investment in infrastructure and environmental education. Social participation and the recognition of local knowledge are key elements for the region's water sustainability. Publisher: Universidade Estadual do Oeste do Paraná Tipo do documento: Tese

2025-09-09T00:00:00Z Diniz, Antônio Marcos https://tede.unioeste.br/handle/tede/8624 2026-08-26T14:05:07Z 2026-03-04T00:00:00Z

Title: Stakeholder engagement: dinâmica relacional para conservação de solos e recuperação de matas ciliares em sustentabilidade rural Autor: Diniz, Antônio Marcos Primeiro orientador: Walter, Silvana Anita Abstract: This thesis analyzes soil conservation and riparian forest restoration in Nova Santa Rosa (PR), Brazil, through the theoretical lens of stakeholder engagement, focusing on relational dynamics among territorial actors in rural contexts characterized by normative instability. The study addresses a gap in literature: although significant advances have described institutional instruments of environmental governance, limited attention has been given to the relational and institutional mechanisms through which conservation practices are sustained over long term. Methodologically, the research combines an international qualitative meta-synthesis of case studies (n = 7) with a longitudinal empirical analysis, which is based on the Gioia method and supported by in-depth interviews and historical documents. The integration of the metasynthesis and empirical findings allows relational engagement to be interpreted as the central explanatory axis, mediated by mechanisms associated with crisis perception, social legitimation, economic viability, intergenerational learning, productive consolidation of conservation practices, formal regulatory enforcement, and local autonomy. Together, these mechanisms explain the long-term stability of conservation practices. As an analytical synthesis, the thesis proposes the Systemic Collaborative Engagement Framework (FECS), within the relational dynamics of stakeholder engagement, offering an interpretation of how local collaborative structures maintain continuity amid regulatory fluctuations. By shifting the explanatory focus from policy instruments to relational mechanisms, the thesis contributes to the debate on stakeholder engagement in rural sustainability, elucidating how values, processes of social legitimation, and territorial arrangements interact to sustain conservation practices over time. Publisher: Universidade Estadual do Oeste do Paraná Tipo do documento: Tese

2026-03-04T00:00:00Z Smek, Bruno José https://tede.unioeste.br/handle/tede/8596 2026-08-06T23:47:08Z 2026-05-22T00:00:00Z

Title: Titulação de lotes em assentamentos de reforma agrária no Oeste do Paraná: encontros e desencontros entre as expectativas das famílias assentadas e as políticas públicas Autor: Smek, Bruno José Primeiro orientador: Fabrini, Joao Edmilson Abstract: The titling of land plots in agrarian reform settlements is a central issue in the dynamics of the Brazilian agrarian question, presenting direct implications for legal security, permanence in the territory, and the social reproduction of settled families. This research aims to analyze the convergences and divergences in the land titling process in settlements in Western Paraná, investigating the settlers' perception of this process. The results show that titling is widely valued as a way to guarantee stability, legal recognition, and access to public policies, while also revealing concerns related to economic sustainability, the costs involved, and the risk of land commodification. It is observed that, although titling can strengthen the autonomy of families and stimulate productive investments, its effectiveness is conditioned by its articulation with public policies, infrastructure, and technical assistance. The research also indicates the persistence of structural limitations, such as the predominance of intermediate forms of land regularization, institutional obstacles, and limited access to information about legal instruments. From a methodological point of view, the study is based on a theoretical review of the agrarian question and on empirical data obtained through field research, with the application of questionnaires and interviews with settlers. It concludes that land titling is a contradictory process that, while increasing legal security, also inserts settlers into new economic dynamics, highlighting tensions between the social function of land and its integration into market logic. Publisher: Universidade Estadual do Oeste do Paraná Tipo do documento: Dissertação

2026-05-22T00:00:00Z