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Linking seed dispersal and genetic structure of trees: a biogeographical approach

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dc.contributor.advisor Böhning‐Gaese, Katrin
dc.contributor.author Friederike A Voigt, Rami Arafeh, Nina Farwig, Eva M Griebeler, Katrin Böhning‐Gaese
dc.date.accessioned 2022-02-03T11:38:27Z
dc.date.accessioned 2022-05-22T08:54:12Z
dc.date.available 2022-02-03T11:38:27Z
dc.date.available 2022-05-22T08:54:12Z
dc.date.issued 2009-06-15
dc.identifier.citation Voigt, F. A., Arafeh, R., Farwig, N., Griebeler, E. M., & Böhning-Gaese, K. (2009). Linking seed dispersal and genetic structure of trees: a biogeographical approach. Journal of Biogeography, 36(2), 242–254. doi:10.1111/j.1365-2699.2008.02002.x en_US
dc.identifier.issn 1365-2699
dc.identifier.uri http://localhost:8080/xmlui/handle/123456789/8231
dc.description.abstract Aim: Natural and human-induced differences in frugivore assemblages can influence the seed dispersal distances of trees. An important issue in seed dispersal systems is to understand whether differences in seed dispersal distances also affect the genetic structure of mature trees. One possible approach to test for a relationship between seed dispersal and the genetic structure of mature trees is to compare the genetic structure of two closely related tree species between two biogeographical regions that differ in frugivore assemblages and seed dispersal distances. Previous studies on two Commiphora species revealed that Commiphora guillauminii in Madagascar has a much lower seed dispersal distance than Commiphora harveyi in South Africa. We tested whether the lower seed dispersal distance might have caused decreased gene flow, resulting in a stronger genetic structure in Madagascar than in South Africa. Location Madagascar and South Africa. Methods Using amplified fragment length polymorphism markers we investigated the genetic structure of 134 trees in Madagascar and 158 trees in South Africa at a local and a regional spatial scale. Results: In concordance with our hypothesis, kinship analysis suggests that gene flow was restricted mostly to 3 km in Madagascar and to 30 km in South Africa. At the local spatial scale, the genetic differentiation among groups of trees within sample sites was marginally significantly higher in Madagascar (FST = 0.069) than in South Africa (FST = 0.021). However, at a regional spatial scale genetic differentiation was lower in Madagascar (FST = 0.053) than in South Africa (FST = 0.163). Main conclusions: Our results show that lower seed dispersal distances of trees were linked to higher genetic differentiation of trees only at a local spatial scale. This suggests that seed dispersal affects the genetic population structure of trees at a local, but not at a regional, spatial scale. en_US
dc.language.iso en_US en_US
dc.publisher John Wiley & Sons Ltd en_US
dc.subject AFLP, Commiphora, frugivore assemblage, gene flow, Madagascar, pollination, South Africa, spatial structure. en_US
dc.title Linking seed dispersal and genetic structure of trees: a biogeographical approach en_US
dc.type Article en_US

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