https://ri.ufs.br/jspui/handle/riufs/2449 2026-05-04T22:12:15Z https://ri.ufs.br/jspui/handle/riufs/24675 Título: Determinação do índice de sustentabilidade do Perímetro Irrigado Califórnia em Sergipe Autor(es): Araujo, Carla Tamilys Vasconcelos Abstract: Public irrigation projects emerged as an alternative to the drought problems affecting the Brazilian Semiarid Region, with irrigated agriculture being a fundamentally important technique for enabling food production in this region and fostering development. For these projects to be successful, there must be effective integration between several key factors to maintain the sustainability of irrigation projects. The California Irrigated Perimeter is a public irrigation project located in the Alto Sertão Sergipano region, designed to be a model for rational soil and water exploitation in the Northeastern Semiarid Region, inaugurated in 1987 to promote the socioeconomic development of the region. The area faces problems related to basic sanitation, water theft, lack of maintenance of the physical structures of the distribution channels, deforestation, and irregularities in water distribution. From this perspective, this research aimed to determine the sustainability index of the California/SE irrigated perimeter. The research, which used a quantitative and qualitative approach, was conducted through the analysis of a semi-structured questionnaire applied to family farmers, systematic observation, and document analysis. Indicators of the environmental, economic, and social dimensions were selected and measured, which ultimately allowed the generation of a sustainability index. The final sustainability index calculated was 16.93, and in terms of its classification, the California Perimeter has a “very poor” sustainability level. The results indicated that the main difficulty of the perimeter, currently, is present in the relationship between the Public Services and Family Income indicators. The use of the methodology to calculate the California sustainability index demonstrated the limitations to be faced in the location, as well as allowed the definition of actions to overcome the barriers, in order to promote sustainable development. 2025-02-14T00:00:00Z https://ri.ufs.br/jspui/handle/riufs/24667 Título: Ecologia alimentar de um grupo de Guigó-de-Coimbra-Filho (Callicebus coimbrai Kobayashi & Langguth, 1999): perspectivas para a conservação da espécie na paisagem fragmentada do sul de Sergipe Autor(es): Souza-Alves, João Pedro Abstract: In addition to their intrinsic characteristics, the spatial and temporal distribution of plants influence the behavior of primates, either directly or indirectly. In particular, the spatialtemporal distribution of dietary resources affects not only the feeding behavior of these animals, but also their habitat use. The present study aimed to provide the first data on the behavior and diet of Callicebus coimbrai in a fragment of Atlantic Forest in southern Sergipe, and to evaluate seasonal patterns. The study site is located within Sergipe’s southern coastal Environmental Protection Area (APA Litoral Sul), at the Fazenda Trapsa, which encompasses a mosaic of forested areas of varying quality. A 50 x 50 m trail grid was established in one of the smaller fragments (14.4 ha), where a group of C. coimbrai (1 adult male, 1 adult female, 1 subadult, 1 infant) was monitoring using scan sampling (1 minute scan at 5-minute intervals). Additional data on the group’s diet were collected using ad libitum sampling. Four different habitat types were identified within the fragment – mature, secondary, anthropogenic, and burned forest. The animals spent a large part of their time resting (43.2%) and feeding (23.4%), and only 16.7% moving. The activity budget varied significantly between seasons, with the animals feeding more during the wet season, and resting more during the dry. Social behavior was also almost three times more frequent during the wet season. A total of 36 plant species were exploited during feeding, most of which belonged to the Elaeocarpacea (31.3%), Myrtaceae (25.4%), Sapotaceae (18.0%) and Passifloraceae (16.3%) families. Fruit was the item most consumed throughout almost the whole of the study period (54.8%), followed by new leaves (15.2%), with seeds and insects providing a major proportion of the diet during some months. The consumption of fruit declined significantly during the dry season, but remained relatively high. The study group occupied a home range of 11.7 ha, with more or less the same area (9 ha) being used in the two seasons. While a significant preference for mature forest was recorded overall, the group also showed a preference for burned forest in the dry season, apparently due to the abundance of new leaves in this habitat. Overall, the study group presented behavior patterns typical of the genus Callicebus, and predictable strategies to compensate for the seasonal scarcity of preferred foods, in particular fruit. The study also re-emphasized the tolerance of the species to habitat fragmentation, apparently based on its behavioral flexibility, and ability to exploit alternative resources, as and when xiii available. These findings provide an important starting point for the development of effective management strategies, necessary to guarantee the survival of the C. coimbrai populations of Sergipe and the habitats they occupy over the long term. 2010-02-24T00:00:00Z https://ri.ufs.br/jspui/handle/riufs/24487 Título: Tecnologia sustentável e saberes tradicionais: implicações da produção e uso agrícola de biocarvão de lodo no solo do Quilombo Serra da Guia, Sergipe Autor(es): Barbosa, Taísa Andrade Abstract: Research inspired by traditional knowledge can provide pathways to simple and effective solutions, consistent with a model of sustainable development. The “Terra Preta de Índio” found in the Amazon is a highly fertile soil with a dark colour due to the presence of charcoal particles. It has inspired investigations into the effects of biochar use in soils. In this context, the present study aimed to investigate the implications of producing and using sewage sludge biochar (SSB) in the Serra da Guia quilombo, in Poço Redondo/SE, Brazil, by articulating sustainable technologies and traditional knowledge. Biochar can be obtained through the thermal conversion of biomass, such as the sludge generated in wastewater treatment plants, which is rich in organic matter (~45%). Aligned with the Sustainable Development Goals (SDGs), the research addresses a dual challenge faced in the Brazilian semi-arid Northeast: food insecurity in traditional communities and the need for a sustainable destination for sewage sludge, a residue with high polluting potential. To this end, an interdisciplinary quali-quantitative approach was adopted, grounded in the hypothetical-deductive method and considering the socio-environmental complexities involved. The investigation was structured into four chapters. The first chapter addresses the conversion of sewage sludge into SSB and its physicochemical characterisation, demonstrating for the first time that the process promotes pesticide degradation, as well as it favours pollutant immobilisation and preserves nutrients, thereby confirming its suitability as a safe agricultural input. The second chapter highlights the potential longevity of biochar, showing that the transformations resulting from aging in the soil maintain or even enhance its functionalities as a biofertiliser and soil conditioner. The third chapter evaluates the effects of SSB on soil water retention and the cultivation of coriander (Coriandrum sativum L.), showing significant improvements in water availability and crop development, especially with applications of 40 t ha⁻¹. Finally, the fourth chapter presents the socio-economic context and diagnosis of the quilombola family farming, based on semistructured interviews, which revealed structural vulnerabilities, female protagonism, and agricultural practices rooted in social cooperation, as well as openness to adopting technologies compatible with community values. The results indicate that SSB can contribute to strengthening family farming, enhancing soil resilience, while offering a sustainable alternative for sewage sludge management. It is emphasised, however, that its use should not be regarded as an isolated solution, but as part of a broader strategy for sustainable development that values quilombola culture, promotes socio-environmental justice, and exemplifies the principles of the circular economy, requiring integrated public policies. 2025-09-24T00:00:00Z https://ri.ufs.br/jspui/handle/riufs/24482 Título: Gestão sustentável dos resíduos da agroindústria (Manihot esculenta) no semiárido sergipano sob o aspecto da economia circular Autor(es): Santos Júnior, Robério Satyro dos Abstract: Agricultural production is one of the most important socioeconomic activities, as it is responsible for food production; however, it is also responsible for generating a huge amount of waste. The estimated amount of global agricultural production is 7.26 Gt, and the volume of dry biomass reaches approximately 140 Gt. This quantity of green material represents a significant impact on the environment. Furthermore, the lack of valorization and inadequate disposal of agricultural waste in nature are associated with the linear production model, which prioritizes only consumption and disposal, causing environmental impacts. This model directly opposes the Circular Economy (CE), which, in turn, represents a significant advance in the incorporation of sustainability by organizations, cities, and governments, fundamentally characterized by the recycling, reuse, and repurposing of waste generated throughout the product's life cycle, and not just in the production process. In this context, a research project proposed the development of a circular model for utilizing cassava harvesting and processing waste, transforming the resulting biomass into second-generation biofuels. To achieve this objective, it initially relied on a preliminary survey establishing cassava as a family-based crop among the two crops produced in the Sergipe Semi-Arid region. Following this, an analysis of technical, economic, and energy solutions for the conversion of plant biomass was conducted. To demonstrate the impacts of linear and circular models, the Systems Dynamics methodology was proposed. This approach allowed the construction of scenarios simulating both models. Finally, the study culminated in the creation of the Semiárido Forte platform, which shares information on the components of the biomass produced, the potential for second-generation biofuels, the CO2 sequestered in the harvesting and processing, the contrasting social and environmental impacts between the linear and circular models, as well as the economic values with and without biomass recycling. The achievement of the proposed objectives was supported by the application of interdisciplinary technologies, which optimized the collection and processing of easy-to-use information. The results demonstrated the importance and benefits that can be achieved with the incorporation of a circular production model for cassava biomass waste, used as an instrument for sustainable practices. The analysis demonstrated positive potential with the introduction of the Production Unit, with environmental, energy, and economic gains. Simulations showed positive and negative results over ten years for biomass in both linear and circular models. Therefore, this research serves as an important instrument for achieving Sustainable Development Goals (SDGs) 2 and 12, providing sustainable agriculture, production, and consumption, necessary to improve soil quality, minimize the effect of water stress on crops, reduce greenhouse gas emissions, and enable agricultural and pastoral activities, strongly contributing to the retention of small family farmers in the region, and most importantly, promoting a sustainable consumption economy for agricultural/agroindustrial waste. 2025-10-29T00:00:00Z