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The spatial structure of the gene pool of a viviparous population of Poa alpina ‐ environmental controls and spatial constraints
Author(s) -
Bjørnstad Ottar N.,
Iversen Anders,
Hansen Marit
Publication year - 1995
Publication title -
nordic journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.333
H-Index - 33
eISSN - 1756-1051
pISSN - 0107-055X
DOI - 10.1111/j.1756-1051.1995.tb00162.x
Subject(s) - biology , biological dispersal , population , spatial analysis , selection (genetic algorithm) , autocorrelation , isolation by distance , ecology , genetic structure , evolutionary biology , gene , genetics , statistics , genetic variation , mathematics , demography , artificial intelligence , sociology , computer science
Bjømstad, O. N., Iversen, A. & Hansen, M. 1995. The spatial structure of the gene pool of a viviparous population of Poa alpina — environmental controls and spatial constraints. — Nord. J. Bot. 15: 347–354. Copenhagen. ISSN 0107–055X. Because both the genetic make‐up and the environmental conditions of a population are spatially autocorrelated, it is difficult to infer processes of selection or drift for population genetic mappings. We propose a methodology based on partial Mantel techniques and partial autocorrelation techniques to separate the action of these processes. The method is applied to data on Poa alpina to indicate that isolation‐by‐distance (drift) is the main process inducing positive autocorrelation at the scale of diaspore dispersal (< 100m). The pattern at larger distances is more consistent with selection.