2016-10-182016-04-25SOUZA, K. S. Desenvolvimento de superfícies de resistência explicando a variação genética por modelagem orientada por padrão: uma análise com espécies de árvores de cerrado. 2016. 71 f. Dissertação (Mestrado em Ecologia e Evolução) - Universidade Federal de Goiás, Goiânia, 2016.http://repositorio.bc.ufg.br/tede/handle/tede/6416To understand how landscape features spatially affect the genetic structure of a population , we propose the creation of resistance surfaces using an approach Pattern Oriented Modeling of genetic divergence (FST parwise) among baru populations (Dipteryx alata). To compose the resistance surface, we employed land use layers in an area of 25 baru populations, generating 10000 resistance surfaces with randomized cost values between 0 and 100. We use these surfaces to calculate matrices pairwise effective resistance to the circuitscap. Mantel test and its variations revealed a correlation of FST parwise with geographical distance of 0.48. The correlation between FST pairwise and the resistance matrices ranged between r = -0.2019 and r= 0.6736. We used multiple regression matrices to select the best (most satisfactory) models through Akaike (AIC). Three models were selected to contain the parameters that best explain the genetic divergence with ΔAIC below three. The ΔAIC values were used to calculate the AIC-weight (WI) and evaluate the individual contribution of each parameter in the selected surfaces. The selected models suggest that the areas with lower resistance are characterized as Savanna Arboreo Dense and Savanna Grassy Woody. Roads, big rivers, and agricultural lands cause higher resistance.application/pdfAcesso AbertoGenética na paisagemGenética de populaçõesResistênciaLandscape geneticsPopulations geneticsResistanceCIENCIAS BIOLOGICAS::ECOLOGIADissertação