http://repositorio.ufc.br/handle/riufc/24651 2026-06-11T21:24:49Z 2026-06-11T21:24:49Z Câmara, Letícia Mota http://repositorio.ufc.br/handle/riufc/86393 2026-05-20T16:21:45Z 2023-01-01T00:00:00Z

Título: Caracterização de enterobactérias aderidas a partículas de plástico em galerias pluviais na orla de Fortaleza-Ceará Autor(es): Câmara, Letícia Mota Abstract: Coastal cities face disorderly population growth with the lack of basic sanitation as one of the major environmental and public health problems. The discharge of sewage is one of the most common types of oceanic pollution and storm drains are specific vectors of this contamination in coastal cities. Due to inadequate disposal, it is estimated that 80% of plastic waste in the terrestrial environment ends up in the ocean. In the environment, these plastic wastes are degraded and become microplastics (PMs). It is known that in aquatic environments these particles are quickly colonized by microorganisms that form biofilms on their surfaces. This makes MPs hosts and dispersers of potentially pathogenic microorganisms. Thus, this work aimed to study the presence of enteric bacteria adhered to microplastics present in water and sand at the outlet of storm sewers, on the edge of Fortaleza/Ceará. The collections were carried out in three storm sewers: on Av. Rui Barbosa (P1), Av. Desembargador Moreira (P2) and Riacho Maceió storm sewers (P3). Samples of water and wet sand were collected at the outlets of these storm sewers. Five liters of water was filtered at each point to separate MPs particles. One water sample was collected separately for colimetry analysis. In the sand samples, the separation of the microplastic was done by density difference using sea water. The plastic microparticles separated from the samples were subjected to agitation in solution (Tween 80 1% + Sodium Pyrophosphate 1%) to disaggregate the bacterial cells. The washing was inoculated on MacConkey Agar selective medium and the grown colonies were isolated for identification through the IMVIC test and antibiogram. After processing, the MPs were washed and dried for further identification. Most Probable Number (MPN) of Escherichia coli bacteria in 100mL of water was 1,600 at the three sampled points. Sixty strains grown in selective medium, with Gram-negative morphology, were isolated. Fifty-six remained viable for biochemical tests. The bacteria have been identified as members of the Enterobacteriaceae family and belonging to the genera: Citrobacter, Yersinieae, Pseudomonas, Pantoea., Enterobacter, Hafnia, Klebsiella, Escherichia e Citrobacter. Enteric bacteria isolates showed resistance to nalidixic acid, ceftazidime, nitrofurantoin and amoxicillin + clavulanic acid. In the identification of microplastic particles, synthetic fibers, plastic fragments and a pellet were verified. The presence of enterobacteria aggregated to plastic microfragments dispersed in the coastal environment by the drainage of stormsewers and their role in the transport and protection of potential pathogens and resistance genes through water bodies to the marine environment was evidenced. Future studies on enteric bacterial dispersion and antimicrobial resistance should consider the ecological influence and consequences on coastal and marine ecosystems. Tipo: TCC

2023-01-01T00:00:00Z Araujo, Ana Beatriz da Costa http://repositorio.ufc.br/handle/riufc/86095 2026-04-30T12:06:00Z 2026-01-01T00:00:00Z

Título: Planos de gerenciamento de resíduos sólidos do Campus do Pici: uma avaliação crítica à luz da Lei Federal nº 12.305/2010 Autor(es): Araujo, Ana Beatriz da Costa Abstract: The solid waste management plan (SWMP) is a technical document that establishes guidelines, procedures, and responsibilities for the proper management of solid waste generated by an organization or activity, covering all stages of waste management. A large university campus is considered an enterprise subject to the preparation of a SWMP. In this context, such documents must ensure that waste management is carried out in an efficient and environmentally appropriate manner. Thus, the objective of this study is to evaluate the coverage and compliance with the minimum required content of the normative and sectoral solid waste management plans of the Federal University of Ceará (UFC), by verifying their conformity with the requirements established in Article 21 of the National Solid Waste Policy (Federal Law No. 12,305/2010). The methodology consisted of a documental analysis of the plans made available by the UFC Environmental Office (SMA/UFC) and on the university’s institutional website, focusing on the presence, structure, and coherence of the information required by the legislation. The results indicate that, although UFC has formal environmental management instruments and initiatives focused on environmental education, the plans still present relevant gaps, especially regarding waste characterization, identification of environmental liabilities, and the definition of preventive and corrective actions. Furthermore, the data reveals that, despite the fact that the sectoral plans have an educational nature and greater theoretical detail, they still require regulatory updating and more consistent technical diagnoses. In conclusion, the revision and improvement of solid waste management plans are essential to ensure greater effectiveness of environmental management, legal compliance, and the strengthening of the university’s institutional role as a reference in sustainable development. Tipo: TCC

2026-01-01T00:00:00Z Cunha, Maria Vitória Ferreira da http://repositorio.ufc.br/handle/riufc/85960 2026-04-23T12:51:45Z 2026-01-01T00:00:00Z

Título: Da duna à rocha: distribuição e composição dos eolianitos da costa oeste cearense Autor(es): Cunha, Maria Vitória Ferreira da Abstract: Eolianites are cemented dunes with a significant presence in the western sector of the coastal zone of the State of Ceará, serving as paleoclimatic records and acting in the defense of the coastline in this region. In this interim, the present study aims to analyze the spatial distribution and composition of eolianites located between Bitupitá Beach, in the municipality of Barroquinha (CE), and Pecém Beach, in São Gonçalo do Amarante. To this end, the adopted methodology included a literature review, the creation of a cartographic database, and detailed petrographic analysis. The analyses evidenced that the studied eolianites have a predominantly terrigenous composition, with quartz and feldspar as main components, in addition to a significant presence of heavy minerals in locations such as Moitas and Bitupitá. The presence of biogenic constituents was also identified, highlighting a compositional gradient influenced by the adjacent Continental Shelf, since samples collected in the eastern sector of the study area, near Pecém, showed low bioclast content, while the western sector, towards Barroquinha, stood out for the increase in biogenic fragments, mainly coralline algae, mollusks, and foraminifera. In addition to compositional variations between locations, the study also evidenced heterogeneity between fractions of the same location, as identified at Baleia Beach, located in the municipality of Itapipoca. The cementation, ranging from micritic to sparitic, suggests different conditions of carbonate precipitation. Thus, it is concluded that the formation of eolianites on the western coast of Ceará does not occur randomly, but is conditioned by factors such as the semi-arid climate, the presence of a shallow platform with low slope, and the presence of carbonate habitats in ultra-shallow waters, in addition to the coastal geomorphology of the region, which favors the existence of these eolian outcrops. It is under the influence of these variables that the dynamics of terrigenous and biogenic input acts, marking the composition of the eolianites and highlighting them as an essential geological feature for the Ceará coastal zone. Tipo: TCC

2026-01-01T00:00:00Z Damasceno, Maressa Paiva http://repositorio.ufc.br/handle/riufc/85927 2026-04-22T12:32:03Z 2026-01-01T00:00:00Z

Título: Ocorrência e aspectos populacionais do bivalve invasor Electroma vexillum (Reeve, 1857) na Enseada do Mucuripe, Fortaleza - Ceará Autor(es): Damasceno, Maressa Paiva Abstract: The introduction of invasive alien species is a long-standing problem that has affected coastal environments for centuries. Bioincrustation on ship hulls and the transport of ballast water are among the main causes of the introduction of these species into marine ecosystems. Electroma vexillum is a bivalve mollusk of the Vulsellidae family and its original distribution is in the Indian Ocean and the Red Sea. However, this species has already been found in the Mediterranean Sea and on the northeast coast of Brazil. In this context, the purpose of this study was to analyze the occurrence and spatial distribution of the species Electroma vexillum in Enseada do Mucuripe, in Fortaleza, Ceará. Data was collected at seven locations along the Mucuripe coast, with three replicates at each site, totaling 21 samples. Since the species tends to attach itself to seaweed, collection sites were decided in advance based on the presence of marine macroalgae on sandstone reefs and coastal groynes in Enseada do Mucuripe. Marine macroalgae were collected using a 10x10cm quadrant, with the assistance of a steel spatula. Subsequently, the samples were taken to the laboratory, where they were frozen and sorted to separate E. vexillum individuals and macroalgae. After that, the organisms were measured using a stereomicroscope. A total of 1,538 individuals were collected. The highest abundance was found on the sandstone reef at Mercado dos Peixes, with a total of 1,465 individuals, and the lowest abundance was found at Espigão João Cordeiro and Recife do Labomar, with 0 individuals. The Kruskal-Wallis test revealed a significant difference in the abundance of E. vexillum between the areas analyzed. Shell length and height showed a significant positive linear correlation (r = 0.8834). The shortest length observed was 0.962 mm and the longest was 4.48 mm, both found at the Mercado dos Peixes, which had a significantly longer length compared to the other study sites. The Kruskal-Wallis test was also applied to compare biomass and macroalgae richness between collection sites, but no statistically significant differences were found. These results indicate that the species is well established in the study site, with its abundance and size variating spatially. Furthermore, there is a clear need for long-term monitoring to investigate the factors that may influence the distribution of E. vexillum, enabling a better understanding of its population dynamics and its establishment in Enseada do Mucuripe. Tipo: TCC

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