http://repositorio.ufc.br/handle/riufc/24651 2026-04-02T14:48:32Z http://repositorio.ufc.br/handle/riufc/85645 Título: Mapeamento geográfico da espécie Aratinga jandaya no estado do Ceará e sua recolonização em uma das maiores metrópoles brasileiras Autor(es): Silva, Karen de Sousa Abstract: The continuous expansion of urban areas is a worldwide phenomenon that puts natural ecosystems and their biodiversity at risk. Birds are highly sensitive to anthropogenic changes. However, proper management of the vegetation cover present in cities can mitigate such impacts. Avifauna represents the second most diverse group of vertebrates in Brazil, with 1,979 described species, many of which have adapted to living in cities. The family Psittacidae is among the most threatened due to the capture of individuals for wildlife trafficking, resulting in widespread threats to its species. Within this family is the genus Aratinga (Spix, 1824), with six species in Brazil, including Aratinga jandaya (Gmelin, 1788), the jandaya parakeet (jandaia-verdadeira), which is endemic to Brazil. Due to hunting and habitat loss, the species is considered threatened in the state of Ceará. However, in recent years, several individuals have been observed living freely in the urban area of Fortaleza. The present study aimed to map the current geographic distribution of A.jandaya in Ceará, as well as its recolonization areas in Fortaleza, seeking to identify locations of greatest importance for the species’ survival. Occurrence records were collected by the author of this research and the co-supervisor, supplemented by records provided by collaborators and birdwatchers, and by data stored on WikiAves, iNaturalist, eBird, and the Ceará State Platform of Environmental Spatial Data. Species distribution maps and maps of priority protection areas in Fortaleza were produced using QGIS version 3.22.4. The results demonstrate that the current distribution of A.jandaya in Ceará is relatively restricted and discontinuous, covering ten municipalities predominantly located in the coastal region, with one population in the southern part of the state. There is a gap between records from the coastal region and those from the western and southern parts of Ceará, indicating that the species still occupies little of the state’s territory and could recover vast areas of its original range if adequately protected. In Fortaleza, we identified 27 neighborhoods with records of A.jandaya, two of which presented nesting and roosting areas, confirming that this threatened species is reproducing in remaining native vegetation areas in the city. The neighborhood of Cajazeiras stood out for concentrating the highest number of records, likely harboring the largest population of jandaya parakeet (jandaia-verdadeira) in Ceará. Given the potential of Fortaleza’s remaining vegetation areas to function as reproductive sites, we propose the protection of five green mosaics identified in the city where jandaias occur and that may serve as recolonization areas for the species, among them the Carnaubal of Cajazeiras and the green areas of the State University of Ceará (UECE), which contain established nesting sites. We conclude that such analyses are essential to guide conservation and protection actions for the species and its habitats, especially those located in urban contexts, and that the preservation of remaining forest fragments is crucial to ensuring the resources and habitats necessary for A. jandaya, thereby preventing further population decline. Tipo: TCC 2025-01-01T00:00:00Z http://repositorio.ufc.br/handle/riufc/85644 Título: Ocorrência de fogo no domínio biogeográfico da Caatinga: análise dos padrões de distribuição espacial e temporal ao longo de quarenta anos Autor(es): Vieira, Lucas Bernardino Rodrigues Abstract: The occurrence of fire events has been consistently observed in Brazil and worldwide, and understanding their patterns, possible causes, and effects has become crucial for management actions and the strengthening of public policies. This study aimed to analyze the spatial and temporal patterns of fire occurrences in the Caatinga, a Brazilian fire-independent biogeographic domain. The analysis consisted of evaluating the temporal and spatial patterns of fire events considering the different biogeographic districts of the domain over a 40-year period (1985-2024), as well as during the last decade of the investigated historical period. The investigations considered both the frequency of fire events and the cumulative areas affected by fire. The data revealed a variable spatial and temporal pattern, characterized by years with smaller burned areas and others with a greater extent of affected areas. The spatial distribution of these events was also variable, with a higher concentration and frequency of occurrences in the biogeographic districts of the Caatinga located in the western portion of the domain, where it borders the Cerrado domain and areas of current agricultural expansion, indicating a greater susceptibility of this region to fire incidence. Tipo: TCC 2025-01-01T00:00:00Z http://repositorio.ufc.br/handle/riufc/85553 Título: Comparação entre NDVI e SAVI na determinação da perda de solo na bacia hidrográfica Piancó-Piranhas-Açu Autor(es): Castro Filho, Aluisio Antonio Gomes de Abstract: Soil loss due to water erosion is one of the main mechanisms of soil degradation worldwide, and the search for alternatives to monitor this problem becomes essential for its control. The present study aims to compare the NDVI and SAVI indices as an alternative way to determine the cover and management factor of the Universal Soil Loss Equation in order to quantify soil loss in a semi-arid watershed. Initially, bands 4 and 5 of the Landsat-8 satellite were collected for a pre-established period according to the climatic seasonality of the semi-arid region, which were used to create the vegetation indices and later applied to the calculation of the cover and management factor. To determine the other factors of the Universal Soil Loss Equation, data from studies in similar areas and from governmental water resources management agencies were compiled. All data were processed in QGIS software, where soil loss modeling was generated for both scenarios using map algebra. In both cases, very similar values were found for the cover and management factor, ranging from 0.0440 to 0.7126 when calculated using SAVI and from 0.0446 to 0.7088 using NDVI. Consequently, similar annual average soil loss values were also observed, with the Orthic Natric Planosol being the most susceptible soil class in both scenarios, presenting values of 6.618 t·ha⁻¹·yr⁻¹ for the SAVI model and 6.519 t·ha⁻¹·yr⁻¹ for NDVI. The lowest values were associated with dystrophic Yellow Latosols, with 1.225 t·ha⁻¹·yr⁻¹ and 1.199 t·ha⁻¹·yr⁻¹, respectively. Despite NDVI limitations in temporal analyses in semi-arid environments, both indices demonstrated similar effectiveness in watershed-scale soil loss modeling in a semi-arid context, proving to be viable alternatives for determining the cover and management factor in the absence of empirical data. Tipo: TCC 2025-01-01T00:00:00Z http://repositorio.ufc.br/handle/riufc/85501 Título: Composição florística de um fragmento de vegetação dos tabuleiros costeiros no município de Eusébio: caminhos para a conservação da diversidade vegetal na Região Metropolitana de Fortaleza, Ceará Autor(es): Paiva, Caio Vinícius Pompeu Bitú Abstract: The state of Ceará encompasses a variety of vegetation types. Although the central portion of the state is dominated by caatinga vegetation, the coastal areas harbor distinct ecosystems, such as tabuleiro forests and savannas, which exhibit floristic affinities with cerrado vegetation. Despite the ecological importance of native vegetation, the coastal region of Ceará has been undergoing extensive loss of plant cover, and the municipality of Eusébio is among the areas experiencing intense urban expansion, resulting in ecosystem fragmentation. In this context, the present study aimed, in general, to document the plant diversity and phytophysiognomies within a peri-urban forest fragment in the municipality of Eusébio, Ceará, in order to contribute to the knowledge of Ceará’s biodiversity. The forest fragment is located on public land belonging to the National Institute for Space Research (INPE Eusébio). Field surveys were conducted using the “caminhamento” method, which consists of nonsystematic walks throughout the area, collecting all fertile botanical material encountered. The collected specimens were deposited in the Prisco Bezerra Herbarium (EAC) at the Federal University of Ceará (UFC), documenting the flora of the INPE vegetation fragment. In addition, anthropogenic impacts present in the area were recorded. We recorded 241 species, distributed across 175 genera and 68 families, with the most representative being Fabaceae (46 species), followed by Rubiaceae (18 species), Poaceae (14 species), Malvaceae (13 species), Cyperaceae (12 species), Asteraceae (ten species), and Myrtaceae (nine species). We documented 18 exotic species, most of which were invasive, with particular emphasis on Azadirachta indica, which has already invaded the vegetation. Three distinct phytophysiognomies were identified: tabuleiro forest, characterized by a well-defined canopy and leaf litter on the forest floor; tabuleiro savannas, with typical cerrado species, spaced shrubs, and herbs dominating the substrate; and flooded areas, which retain water even during the dry season and contain species adapted to waterlogged soils. Additionally, two intermittent springs were found in the region, along with the occurrence of the threatened species Bacopa cochlearia. Based on the results generated by this study, we propose the creation of a sustainable-use Protected Area (Área de Relevante Interesse Ecológico – ARIE), encompassing the entire forested area of the site, in order to strengthen the legal protection of local biodiversity and phytophysiognomies, thereby further contributing to the conservation of coastal vegetation in the state of Ceará. Tipo: TCC 2025-01-01T00:00:00Z