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Effects of climate changes on distribution of Eremanthus erythropappus and ***(Asteraceae)in Brazil

Journal of Forestry Research 2020年第2期31卷 353-364页

作者： Lucas Fernandes Rocha isaias emilio paulino do carmo Joema Souza Rodrigues Povoa Dulcineia de Carvalho Departamento de Ciencias Florestais Universidade Federal de LavrasLavrasMG CEP 37200-000Brazil Institute of Biosystems Engineering Poznan University of Life SciencesWojska Polskiego 5060-637 PoznanPoland

Phylogeographic patterns of endemic species are critical keys to understand its adaptation to future climate ***,based on chloroplast DNA,we analyzed the genetic diversity of two endemic and endangered tree species from the Brazilian savanna and Atlantic forest(Eremanthus erythropappus and Eremanthus incanus).We also applied the climate-based ecological niche modeling(ENM)to evaluate the impact of the Quaternary climate(last glacial maximum*21 kyr BP(thousand years before present)and Mid-Holocene*6 kyr BP)on the current haplotype ***,we modeled the potential effect of future climate change on the species distribution in 2070 for the most optimistic and pessimistic *** primer/enzyme combination(SFM/HinfI)revealed polymorphism with very low haplotype diversity,showing only three different *** haplotype 1 has very low frequency and it was classified as the oldest,diverging from six mutations from the haplotypes 2 and *** *** populations are structured and differ genetically according to the areas of *** general,the populations located in the north region are genetically different from those located in the *** genetic structuring was observed for *** ENM revealed a large distribution during the past and a severe decrease in geographic distribution of *** and *** from the LGM until present and predicts a drastic decline in suitable areas in the *** reduction may homogenize the genetic diversity and compromise a relevant role of these species on infiltration of groundwater.

关键词： Ecological niche modeling Genetic diversity Climate change Chloroplast DNA

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