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Mitochondrial haplotype distribution, seed dispersal and patterns of postglacial expansion of ponderosa pine
Author(s) -
Johansen A. D.,
Latta R. G.
Publication year - 2003
Publication title -
molecular ecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.619
H-Index - 225
eISSN - 1365-294X
pISSN - 0962-1083
DOI - 10.1046/j.1365-294x.2003.01723.x
Subject(s) - cline (biology) , biological dispersal , biology , range (aeronautics) , seed dispersal , mitochondrial dna , colonization , ecology , haplotype , population , genotype , genetics , demography , materials science , sociology , composite material , gene
Maternally inherited mtDNA in a secondary contact zone of ponderosa pine revealed a cline less than 10 km wide — much narrower than previously described. A survey of 76 populations gave no evidence either of intermixing or of a mosaic contact zone. Such sharp contact zones are consistent with diffusive range expansion, rather than long distance colonization. However, evidence for long distance seed dispersal events was found in two populations where haplotypes were observed far from their main area of occurrence. The results suggest a small number of long distance colonists with diffusive dispersal from these centres.