https://repositorio.ufpb.br/jspui/handle/tede/5436 PPGG 2026-05-23T05:45:12Z https://repositorio.ufpb.br/jspui/handle/123456789/38020 Título: Entre a contaminação e a escassez hídrica: uma análise dos riscos associados à qualidade da água do Riacho Agon, Catolé do Rocha - PB Autor(es): Andrade, Maria Lidia dos Santos Orientador: Suertegaray, Dirce Maria Antunes Abstract: The analysis of water contamination resulting from changes in land use and land cover is crucial for assessing environmental impacts and the risks associated with water quality. Thus, the present study aims to investigate water conditions through correlations between environmental constraints, land use and land cover, and water quality in the Agon stream microbasin. To this end, land use and land cover mapping of the area of interest was performed using data from the MapBiomas project, alongside water sampling (surface and groundwater) for the analysis of physical, chemical, and microbiological parameters. To understand the degree of aquifer vulnerability in the Agon stream microbasin, the GOD method (Groundwater occurrence, Overall lithology, and Depth to water table) was employed. The generated data allowed for an integrated analysis of the parameters established by the Ministry of Health (Ordinance 888/2021) and the CONAMA Resolutions (No. 357/2005 and No. 396/2008). The relevance of this study is justified by the microbasin’s location in the Brazilian Semi-arid region, a region characterized by a negative water balance, which reinforces the importance of conserving existing water resources. Additionally, there is a scarcity of research focused on understanding how water contamination in the local context can increase water scarcity in the region. Therefore, there is a need for detailed analyses regarding contamination and water scarcity, as water pollution represents a serious risk to public health and ecological balance. The juxtaposition of environmental characteristics — an unconfined alluvial aquifer embedded in crystalline geology, under a semi-arid climate with fluctuations in annual and interannual rainfall patterns, intermittent flow, and intense land use and cover — combined with high aquifer vulnerability (GOD index of 0.56), resulted in a critical situation in the Agon stream microbasin. The results revealed that the water is unfit for consumption at all sampling points due to microbiological contamination, high nitrate levels, and other physical-chemical alterations (turbidity and Total Dissolved Solids - TDS). This reality found in the Agon microbasin is dialectically contradictory: it is an area that, while facing socioeconomic and environmental difficulties related to water scarcity, is simultaneously submerged in a logic of significant contamination Editor: Universidade Federal da Paraíba Tipo: Dissertação 2026-01-26T00:00:00Z https://repositorio.ufpb.br/jspui/handle/123456789/38014 Título: Território e práticas agrícolas no município de Lagoa Seca/PB: espaço de disputas e de luta para a produção de alimentos saudáveis Autor(es): Silva, Rodrigo Brito da Orientador: Galvão, Josias de Castro Abstract: This dissertation addresses the initiatives of civil society and public organizations aimed at strengthening agroecological actions in the municipality of Lagoa Seca, Paraíba, Brazil. The objective of this research is to analyze the construction of territoriality by the National Articulation of Agroecology (ANA), in Lagoa Seca/PB, demonstrating its contribution in the production of new socio-spatial dynamics in the countryside, from the agroecological transition and in the confrontation of the practices disseminated by the green revolution. The qualitative research relies on primary sources, such as ANA documents and interviews with representatives of the entities. The starting point is the historical rescue of the research region, seeking to perceive the territorial organization of the territory at different scales, according to its specificities and characteristics. It is well known that the construction of an alternative production territory is a long and complex process. However, the process of articulation and agroecological transition presents itself as a social contribution, as it creates models of projects to be followed in other locations and at different scales, seeking the implementation of public policies that rekindle the hope of a healthier countryside. We conclude that ANA, by representing organizations, establishes the process of forming an agroecological field in the country, a notion of agroecology with the objective of materializing public policies in favor of society and which has positively affected its performance in productive changes in the field in Lagoa Seca/PB. Editor: Universidade Federal da Paraíba Tipo: Dissertação 2023-12-15T00:00:00Z https://repositorio.ufpb.br/jspui/handle/123456789/37738 Título: Influência de estruturas artificiais na dinâmica costeira em praias de João Pessoa/PB Autor(es): Vasconcelos, Gustavo Ferreira de Orientador: Silva, Richarde Marques da Abstract: This study analyzes the coastal shoreline dynamics and the processes of erosion, stability, and sedimentation, establishing a connection between natural and artihropogenic aspects along Seixas and Cabo Branco beaches, in Paraiba State (Brazil). The research hypothesis assumes that the beach morphology and sedimem budget of these areas are influenced by rigid artificial structures built along the shoreline. Thus, the aim of this stady was to analyze the influences of rigid trtificial structures on the local hydrodynamic and morphosedimentary processes of Seixas and Cabo Branco beaches in João Pesson-PB. To achieve these goals, the following methodological procedures were adopted: (1) monitoring four transversal topographic profiles (P1 to P4) along the shadied beaches over a 13-month period to observe beach morphology dynamics; (2) quantifying sediment balance during the study period across the four transversal profiles, (3) estimating shoreline changes through a multitemporal analysis (2016-2024) using the CASSIE platform, and (4) Atalyzing marine hydrodynamics using the SMC-Brasil model for the period from 1948 to 2008. The results showed that profile P1 (near Cabo Branco viewpoint) presented slight accretion (3.38 m³/m), probably due to wave reflection generated by the nearby structure: profile P2 (near the Cabo Beatco cliff), a sector with riprap, also showed mild accretion (2.06 m³/m), profile P3 (located on the sandy point of Seixas bench) recorded higher accretion (8.60 m²/m), whereas profile P4 (the southernmost profile) exhibited accelerated erosion (-9.04 m/m). Regarding shoreline changes, the northern portion of Cabo Branco beach (transects 9 to 50) was characterized by stability or accretion, while transects 51 to 105 (southern portion) showed a predominant erosive trend. Transects 115 to 117 (the sandy point at the northern part of Seixas bench) displayed a tendency toward accretion. In contrast, iransects 106 to 114 and 118 to 147 (central and southem portions of Seixas beach) were predominantly stable to accretion. As for marine hydrodynamics, the results indicate that during periods of higher meteorological energy, such as winter and spring, currems, winds, and waves become more effective, producing higher sediment transport rates. However, the mean transport/flow outputs geherited by the SMC model revealed predominantly negative sediment transport values across four of the five transversal profiles, except for profile 4, which remained positive throughout all analyzed periods. In summary, the findings highlight the complexity of this coastal environment, which is constantly changing depending on natural energy variations, as well as athropogenic interferences that restrict natural sediment mobility, thereby generating or intensifying several envirımmental problems in the area. Editor: Universidade Federal da Paraíba Tipo: Tese 2025-12-16T00:00:00Z https://repositorio.ufpb.br/jspui/handle/123456789/37685 Título: Vulnerabilidade socioambiental frente aos riscos de desastres climáticos na região pluviométrica do Cariri/Curimataú paraibano Autor(es): Silva, Tatiana dos Santos Orientador: Moura, Marcelo de Oliveira Abstract: Studies on vulnerability are mostly developed in urban areas, as it is in these areas that the largest number of people occupying risk areas subject to hydrometeorological disasters are concentrated. However, areas that have a semi-arid climate and are susceptible to a high succession of dry years, which favors a greater occurrence in the outbreak of climatic disasters, also present vulnerabilities in this scenario. In view of this, the present research aims to analyze the different degrees of socio-environmental vulnerability in the face of the risks of climatic disasters in the rainfall region of Cariri/Curimataú in Paraíba. Regarding the methodological procedures, the research is in line with the proposal defined by Cunico et al. (2021) and, through this, it was possible to identify syntheses that reflect the condition of infrastructure, income and social situation, which superimposed, resulted in social vulnerability by census sector; susceptibility to drought/drought and socio-environmental vulnerability, the latter resulting from the overlapping of social vulnerability and susceptibility to drought/drought. For each synthesis, as well as for social vulnerability, susceptibility to drought/drought and socio- environmental vulnerability, five classes were established, ranging from very low to very high vulnerability conditions. In addition, a survey was carried out of the ordinances for recognizing climate disasters and the disaster information forms, which provide data about the damages and losses caused by them for the period from 2003 to 2016, whose supply is made available. through the website of the Integrated Disaster Information System – S2ID, maintained by the Ministry of Regional Development. Regarding the results, the 35 municipalities analyzed account for 431 census sectors, thus, it was found that in the infrastructure synthesis, the municipalities present a good condition, that is, they are inserted in the very low and low classes; the income synthesis showed a variation between very low and high classes; in the synthesis of the social situation, the sectors are inserted in the very low to middle classes. As for social vulnerability, there is a greater concentration of sectors in the middle class, however, in the very upper class, of the 431 sectors accounted for in the study area, 21 sectors are included in it. With regard to susceptibility to drought/drought, the lower class has the largest number of sectors, totaling 176. With regard to socio-environmental vulnerability, the classes that indicate a high degree of vulnerability, established by the upper and very high classes, add up to 52 census sectors, being 39 rural sectors. Regarding climate disasters, it was found that during the 14 years of analysis, 642 occurrences were recorded, with the highest number of affected (205,630 and 253,031 respectively) in the years 2003 and 2016. An economic loss of around R$ 362,317,767.50 was recorded for the study area, encompassing the agriculture, livestock and services sectors and, in relation to social losses, there are records of damages to the water supply, education and in health. That said, the research becomes important for the possibility of subsidizing studies on the subject in semi-arid areas, as well as for managers, aiming to mitigate the damage to which the resident population is exposed, due to climatic disasters. Editor: Universidade Federal da Paraíba Tipo: Dissertação 2022-07-21T00:00:00Z