Spatial genetic structure in two congeneric epiphytes with different dispersal strategies analysed by three different methods

Molecular Ecology
T SnallM Lascoux

Abstract

Three different approaches were used to assess the kinship structure of two epiphytic bryophytes, Orthotrichum speciosum and O. obtusifolium, that have different dispersal strategies. The two species were sampled in a 200 ha landscape where species occurrence and host trees had been mapped previously. Local environmental conditions at sampled trees were recorded and kinship between individuals was calculated based on amplified fragment length polymorphism (AFLP)-marker data. We did not detect any association between AFLP-markers and investigated environmental conditions. In both species, significant kinship coefficients were found between individuals up to 300-350 m apart which shows that both species have a restricted dispersal range. The spatial kinship structure was detected with both autocorrelation analysis and generalized additive models (GAMs), but linear regression failed to detect any structure in O. speciosum. Although the dioecious O. obtusifolium is currently the more common species it may, none the less, due to its restricted dispersal range and reproduction mode, become threatened in the future by current silvicultural practices which enhance the distance between host trees and decrease their life span. Finally, G...Continue Reading

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Citations

Jul 21, 2005·Molecular Ecology·Leena I Suvanto, Tarja B Latva-Karjanmaa
Jun 28, 2007·Molecular Ecology·Silke WerthChristoph Scheidegger
May 28, 2011·American Journal of Botany·Megan RamaiyaA Jonathan Shaw
Feb 1, 2007·American Journal of Botany·Irene Avila-Díaz, Ken Oyama
Feb 7, 2014·American Journal of Botany·Christopher R StiehaD Nicholas McLetchie
May 1, 2008·American Journal of Botany·Silke Werth, Victoria L Sork
May 27, 2011·American Journal of Botany·A Jonathan ShawBlanka Shaw
Jun 4, 2020·The New Phytologist·Alice LedentAlain Vanderpoorten
Apr 1, 2021·Proceedings. Biological Sciences·Erin E ShortlidgeSarah M Eppley

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