Research Diffusion Pattern Of Habitat Computer Simulation Of The Impact Of Animal Genetic Structure

The key drivers causing loss of biodiversity(i.e., the diversity of genes, species, and ecosystems) are overexploitation, invasive alien species, pollution, climate change, and, especially, the degradation, fragmentation, and destruction of habitats. Landscape genetics is the amalgamation of landscape ecology and population genetics. This discipline aims to provide information about the interaction between landscape features and microevolutionary processes, such as gene flow, genetic drift and selection. Results from such studies may have great implications for biodiversity conservation and reserve management.Computer simulations provides explicitly control for the relationship of structure- process, which ensures the rigorous distribution of the factors caused the genetic differentiation and the evaluation for these factors.Faced with the reality of ever increasing habitat fragmentation, wildlife conservation efforts have recently focused on protecting and restoring population connectivity. As the corridors for animals between habitat patches, dispersal habitat can effectively increase the population connectivity. The research that the effert of the pattern of dispersal habitat on population genetic structure will play an important role to the protection of wild animals. We used spatially explicit, individual-based simulation modeling to explore the effert of the configuration and relative resistance of dispersal habitat on population genetic structure. we used F-statistics, heterozygosity(He, Ho) and mantel r to explore the change of genetic structure. We found that landscape genetic effects are often not detectable when habitat is highly connected. In such situations landscape structure does not limit gene flow. Dispersal habitat resistance has a significant effect on the population genetic structure. With the increasing of dispersal habitat resistance, the population genetic diversity is decreasing, the level of inbreeding is increaseing, the interaction of landscape-genetic is higher. When the resistance of dispersal habitat is low, the change of dispersal habitat configuration could cause large effect on population genetic diversity. However, in the situation of high resistance of dispersal habitat, the change of dispersal habitat configuration could cause little effect on genetic diversity.