https://repositorio.ufpb.br/jspui/handle/123456789/1116 2026-04-14T12:38:11Z https://repositorio.ufpb.br/jspui/handle/123456789/33513 Título: Dinâmica espaço-temporal e estrutural da cobertura e uso da terra da sub-bacia hidrográfica do Rio Tinto entre os anos de 1985, 2001 e 2020 Autor(es): Souza, Thais Silva de Orientador: Almeida, Nadjacleia Vilar Abstract: Changes in the landscape are an integral part of it, being largely caused by anthropogenic factors that cause changes in structure and function. Studies that seek to identify environmental transformations in river basins influence the planning and management of the area. The present work aimed to carry out a spatial-structural analysis of the coverage and use of the Tinto River sub-basin in the last 5 decades (1985 to 2021) using images from the Landsat satellite, aiming to monitor the environmental and structural changes of the Tinto River subbasin. Images from the Landsat 5 and 7 satellite were used to map and analyze the dynamics of land cover and use and structural analysis of forest remnants through landscape metrics: size, edge, shape and core area. The results show that the main changes that occurred in the landscape were the conversion of the natural ecosystem class into agricultural ones. The SBHRT forest remnants are predominantly composed of fragments <5 hectares that are under edge effect, disjunct core areas and irregular shapes in all observed years. The structural constraints and the analysis of the dynamics show worrying results, since in each observed year the conversion of larger fragments into smaller structures is noted. It is recommended that different institutional spheres join forces to promote strategies that aim to strengthen the existing fragments. Editor: Universidade Federal da Paraíba Tipo: TCC 2024-10-09T00:00:00Z https://repositorio.ufpb.br/jspui/handle/123456789/33512 Título: Fenologia e distribuição geográfica dos gêneros tabebuia e handroanthus no nordeste brasileiro - utilizando dados de herbários Autor(es): Calixto, Rayane da Silva Orientador: Quirino , Zelma Glebya Maciel Abstract: The preservation of plant biodiversity is extremely important, and tools such as SpeciesLink, which brings together data from 587 herbaria and 17.7 million records, are essential to assist in this process. This work aims to characterize the distribution of genera and analyze the phenology of species in Northeast Brazil using data from virtual herbaria. The study was based on data from exsiccates from virtual herbaria of the genus Tabebuia and Handroanthus. The data was analyzed regarding geographic distribution, period of abundance and collection frequency. 10 species of the genus Tabebuia and 20 species of Handroanthus were found. The species T. aurea was the most frequent for Tabebuia, while H. impetiginosus was for Handroanthus. The distributed distribution analysis showed that the species of Tabebuia and Handroanthus are present in all states in the Northeast. Phenology analysis showed that species of the Tabebuia genus flower from September to December, while species of the Handroanthus genus flower from July to October. With this, this research concludes that the data present on the platforms contains important information about the geographic distribution and information about the species recorded for the genera Tabebuia and Handroanthus in Northeast Brazil, which can help in the conservation and sustainable use of these species. Editor: Universidade Federal da Paraíba Tipo: TCC 2024-09-09T00:00:00Z https://repositorio.ufpb.br/jspui/handle/123456789/33510 Título: Comportamento de frugívoros na dispersão de sementes de Byrsonima sericea DC. (malpighiaceae) em um fragmento de mata-atlântica, Paraíba Autor(es): Vieira, Mônica Barbosa Orientador: Quirino, Zelma Glebya Maciel Abstract: Seed dispersal is a necessary ecological function for the perpetuation of plant communities, and knowing the behaviors of frugivorous animals can reduce the gaps in consumption interactions. Our aim was to investigate the dispersal of Byrsonima sericea seeds by birds and mammals in a forest fragment. Our aim was to investigate the dispersal of Byrsonima sericea seeds by birds and mammals in a forest fragment. The study was conducted in the Guaribas Biological Reserve, in the municipality of Rio-Tinto, Paraíba, Brazil. The interactions were carried out through focal observations on pre-existing trails in the morning and afternoon. 142 plant-animal interactions were observed, involving 18 species of birds and one species of Sciuridae mammal. The most frequent bird families were Thraupidae, Fringilidae and Pipridae. Larger birds such as Turdus, Trogon curucui and Thraupidae, Tyrannidae and the mammal were considered possible dispersers of B. sericea seeds. The behavior of the birds varied between swallowing the fruit whole and macerating it, depending on their body size. Interactions took place predominantly in open tableland areas. Based on the interactions with various animal species, B. sericea can be considered one of the key species of the REBIO-Guaribas fragment. Editor: Universidade Federal da Paraíba Tipo: TCC 2024-10-02T00:00:00Z https://repositorio.ufpb.br/jspui/handle/123456789/33508 Título: Estrutura e papeis topológicos de espécies de serpentes numa rede trófica no cerrado brasileiro Autor(es): Dutra, Mateus Lima Orientador: Velásquez, Viviana Márquez Abstract: Ecological interactions play a key role in shaping biodiversity. Trophic interaction networksrepresent an important link between biodiversity, ecological communities, and ecosystemfunctioning. They allow us to understand the ecosystem-level consequences of biodiversityloss and to identify species and structural characteristics that may confer stabilitytocommunities. Using an ecological networks approach, we structured a trophic networkof asnake assembly in the Brazilian Cerrado, to assess the foodweb structure, the topological roles of the species, and to identify the most central species and those with broader effectsinthe foodweb. The foodweb exhibited a significant modular structure (M= 0.58; p =<0.05, n= 500 randomizations), and encompasses 151 species, including 68 snakes and 83trophiccomponents representing preys at different taxonomic levels. Using the SAalgorithm, weidentified 11 modules. Within these modules, 7 trophic components were module hubs, interacting with several species within the modules, with a pitviper species (Bothropsneuwiedi) being the module hub with the highest number of interactions in the foodweb. Among the species connecting the network modules, the patagonia green racer (Philodryaspatagoniensis) exhibited the highest centrality, representing the species with the greatest influence in the network, both through its direct and indirect interactions. We usedtheJaccard index to explore the dietary similarity of the snakes using the UPGMAmethod. Connector species and module hubs with higher centrality showed lowdietary similarity, suggesting that they may be functionally complementary and connect the trophic networkthrough different pathways via direct and indirect interactions. Additionally, these conectorspecies tend to occupy different modules, suggesting that competition may play an important role in structuring some of these modules. Our results also suggest that there maybeaphylogenetic signal in the structuring of the foodweb. This study provides a useful tool forpredicting impacts on snake assemblages based on trophic data and can aid conservation and management strategies in the face of imminent habitat loss, highlighting the importanceofthe roles of snake species play in the Cerrado biome. Editor: Universidade Federal da Paraíba Tipo: TCC 2024-10-09T00:00:00Z