https://repositorio.ufu.br/handle/123456789/5160 2026-04-23T11:43:19Z 2026-04-23T11:43:19Z https://repositorio.ufu.br/handle/123456789/48443 2026-03-03T06:19:25Z 2026-02-25T00:00:00Z

Title: Memorial Descritivo

2026-02-25T00:00:00Z https://repositorio.ufu.br/handle/123456789/48425 2026-03-03T06:18:26Z 2025-04-24T00:00:00Z

Title: Construção e utilização de projeto de Wetland indoor para mitigação dos efeitos citotóxicos de solução de bituca de cigarro Abstract: Cigarette butts are among the most common and overlooked solid waste in terms of environmental impact. Once improperly discarded, they release toxic substances such as trace metals, nicotine, tar, among others, which can cause environmental damage due to their toxicity. Considering their chemical composition and the effects they have on ecosystems, the search for sustainable solutions to this issue becomes necessary. In this context, the aim of this study was to evaluate the effectiveness of an indoor constructed Wetland system using the macrophyte Eichhornia crassipes (water hyacinth) for the phytoremediation of solutions contaminated by cigarette butts. The experiment was conducted over 37 days, using leachate solution concentrations of 25%, 50%, and 100%, in addition to a negative control (distilled water) and a reference group (leachate without plants). The development of the plants in the system was monitored weekly through parameters such as weight measurement, bulb diameter measurement, bulb count, and individual flowering. Analyses were carried out before and after phytoremediation, including tests of physicochemical parameters (using a multiparameter probe) and bioassays with Allium cepa [test methodology based on Fiskesjö (1985) and slide preparation according to Guerra (2002)]. After treatment in the Wetland system, a significant improvement was observed in all physicochemical parameters, including increased dissolved oxygen and redox potential, reduced electrical conductivity and total dissolved solids, as well as an improvement in solution pH. The A. cepa results showed that after treatment in the wetland system, there was an increase in root length, a rise in the mitotic index, and a significant reduction in nuclear and chromosomal alterations, as well as in the frequency of micronuclei. It is concluded that phytoremediation using Eichhornia crassipes in an indoor wetland system is an effective and low-cost alternative for mitigating the environmental impacts caused by the improper disposal of cigarette butts, with the choice of water hyacinth justified by its high capacity for absorbing toxic compounds and rapid growth, characteristics confirmed in this study.

2025-04-24T00:00:00Z https://repositorio.ufu.br/handle/123456789/48222 2026-02-08T06:26:28Z 2026-02-04T00:00:00Z

Title: Inventário da comunidade de mamíferos terrestres de médio e grande porte do Parque Estadual do Pau Furado, Minas Gerais, Brasil Abstract: The Brazilian Cerrado stands out for its high biodiversity, but it is seriously threatened by the conversion of natural areas. Protected Areas are crucial in this regard, as they contribute at the local level to the conservation of native vegetation fragments which can improve species persistence. This study aimed to conduct an inventory of the community of medium and large sized mammals (> 1 kg) in the Pau Furado State Park (PEPF) and to compare the results with previous analyses available in the literature. Monitoring took place between May 2024 and July 2025 using camera traps, resulting in a sampling effort of 2,237 trap-days. Based on 437 independent records, the study recorded 20 species of medium and large sized mammals, a value considered satisfactory by the Jackknife 1 estimator, representing 90.9% of the expected richness for the area. Frequency and relative abundance indices referring to each recorded species were also estimated, based on species-specific detection rates throughout the sampling period. This study indicated the presence of the European hare (Lepus europaeus), an exotic species that had not previously been detected in the PEPF, as well as species classified under threat categories, such as the maned wolf (Chrysocyon brachyurus), the jaguarundi (Herpailurus yagouaroundi), the puma (Puma concolor), and the giant anteater (Myrmecophaga tridactyla). In contrast, the presence of the wild boar (Sus scrofa), an exotic species, was not detected, as previously reported in an earlier inventory of the area. This study updates the knowledge of the park’s mammal fauna, and the results indicate the relevance of PEPF for local biodiversity conservation by highlighting the occurrence of native and threatened species. Additionally, the results point to the need for improved management, especially of the buffer zone, in order to reduce potential impacts on the mammal community.

2026-02-04T00:00:00Z https://repositorio.ufu.br/handle/123456789/47981 2026-01-26T13:07:44Z 2025-10-23T00:00:00Z

Title: Eficácia de poleiros artificiais na restauração ambiental: análise da cobertura vegetal e da avifauna após dez anos de implementação Abstract: Habitat fragmentation and degradation in the Cerrado compromise ecological dynamics and the maintenance of biodiversity, requiring strategies for environmental restoration. Artificial perches can be used as a nucleation technique capable of attracting disperser birds and increasing seed rain, which in turn favors natural regeneration. The present study evaluated the effectiveness of artificial perches ten years after their implementation in a Cerrado sensu stricto area in the Triângulo Mineiro region (MG), investigating the relationship between vegetation cover, estimated through the Normalized Difference Vegetation Index (NDVI), and bird community composition. Birds were sampled using linear transects during twelve monthly campaigns between 2024 and 2025, comparing two transects: A – artificial perches implemented/removed more than 10 years ago, and B – without the implementation of any nucleation technique. A total of 115 species distributed across 33 families were recorded, with a predominance of Passeriformes, particularly Tyrannidae and Thraupidae. Guild analysis revealed a predominance of insectivores (40,8%), followed by omnivores (22,6%) and frugivores (12,1%). The species accumulation curve did not reach stabilization, with the Chao2 estimator indicating that 87% of the local avifauna was recorded. Comparison with the previous study, considering only transect A, revealed an increase in frugivorous (5) and nectarivorous (3) species, indicating a qualitative improvement of the sampled area. When considering both transects evaluated in this study (A+B) and the previous study, the total richness of the area is 134 bird species. The NDVI showed an increase in transect A compared to 2014 values (0.286 vs. 0.244), suggesting vegetation densification associated with the presence of artificial perches. The results demonstrated that such structures played a relevant role in ecological restoration, promoting increased vegetation cover and favoring the return of specialized bird guilds. It is concluded, therefore, that artificial perches can be effective tools in nucleation processes and should be considered in environmental recovery strategies in the Cerrado of Minas Gerais.

2025-10-23T00:00:00Z