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Selection: Frascaria-Lacoste:N [7 articles] 

Publications by author Frascaria-Lacoste:N.

Environmental heterogeneity explains the genetic structure of continental and Mediterranean populations of Fraxinus angustifolia Vahl

PLOS ONE, Vol. 7, No. 8. (8 August 2012), e42764,


Tree species with wide distributions often exhibit different levels of genetic structuring correlated to their environment. However, understanding how environmental heterogeneity influences genetic variation is difficult because the effects of gene flow, drift and selection are confounded. We investigated the genetic variation and its ecological correlates in a wind-pollinated Mediterranean tree species, Fraxinus angustifolia Vahl, within a recognised glacial refugium in Croatia. We sampled 11 populations from environmentally divergent habitats within the Continental and Mediterranean biogeographical regions. We combined genetic data ...


Identifying refugia from climate change using coupled ecological and genetic data in a transitional Mediterranean-temperate tree species

Molecular Ecology, Vol. 22, No. 8. (April 2013), pp. 2128-2142,


Populations occurring in areas of overlap between the current and future distribution of a species are particularly important because they can represent “refugia from climate change”. We coupled ecological and range-wide genetic variation data to detect such areas and to evaluate the impacts of habitat suitability changes on the genetic diversity of the transitional Mediterranean-temperate tree Fraxinus angustifolia. We sampled and genotyped 38 natural populations comprising 1006 individuals from across Europe. We found the highest genetic diversity in western and northern ...


Hybridisation, introgression and climate change: a case study for the tree genus Fraxinus (Oleaceae)

In Climate Change, Ecology and Systematics (June 2011), pp. 320-344


The distribution of potential hybrid zones depends largely on climate, habitat quality and historical biogeographic factors including dispersal and local extinctions. Global climate change can produce more favourable conditions for certain species to survive in areas that were previously unsuitable for their growth and/or their reproduction, and it may therefore change the potential for their hybridisation with closely related taxa. This chapter discusses general issues of plant hybridisation and invasiveness in the context of global climate change and presents a case ...


Chilled but not frosty: understanding the role of climate in the hybridization between the Mediterranean Fraxinus angustifolia Vahl and the temperate Fraxinus excelsior L. (Oleaceae) ash trees

Journal of Biogeography, Vol. 40, No. 5. (May 2013), pp. 835-846,


[Aim] To examine mechanisms related to the formation of hybrid zones between the Mediterranean narrow-leaved ash tree Fraxinus angustifolia Vahl and the common ash Fraxinus excelsior L., a mostly temperate tree species, at the continental scale. [Location] Temperate and Mediterranean Europe and the western part of the Black Sea basin. [Methods] We used species distribution models to determine the potential zones of sympatry between the two species, which remain largely unknown. In addition, we analysed 58 populations and 456 samples of ash tree that spanned most ...


Combined analyses of microsatellite and RAPD markers demonstrate possible hybridisation between Fraxinus excelsior L. and Fraxinus angustifolia Vahl.

Forest Genetics, Vol. 9, No. 2. (2002), pp. 111-114


Controlled reciprocal crosses were made between the common ash (Fraxirlus excelsior L.) and the narrow-leaved ash (Fraxirzus angustijolia Vahl). An appreciable proportion of hybrids were found among the progenies using microsatellites and RAPD markers. This is the first report of controlled hybridisation between these two ash species. Reliable ways of identifying the possible exchanges in Fr-axitzrrs excelsior- stands or seeds are of great importance for the whole forestry community. Furthermore, results of our contribution open the wide question of gene flow ...


The phylogeography of Eurasian Fraxinus species reveals ancient transcontinental reticulation

Molecular Phylogenetics and Evolution, Vol. 77 (August 2014), pp. 223-237,


To investigate the biogeographical history of ashes species of the Eurasian section Fraxinus and to test the hypothesis of ancient reticulations, we sequenced nuclear DNA (nETS and nITS, 1075 bp) for 533 samples and scored AFLP for 63 samples of Eurasian ashes within the section Fraxinus. The nITS phylogeny retrieved the classical view of the evolution of the section, whereas nETS phylogeny indicated an unexpected separation of F. angustifolia in two paraphyletic groups, respectively found in southeastern Europe and in the other ...


New insights in the recognition of the European ash species Fraxinus excelsior L. and Fraxinus angustifolia Vahl as useful tools for forest management

Annals of Forest Science, Vol. 63, No. 7. (18 October 2006), pp. 733-738,


Common ash (Fraxinus excelsior L.) and narrow-leaved ash (F. angustifolia Vahl) are the most common ash species in Western Europe. The former is considered to be a highly valuable timber tree and contamination of its seed lots by the latter is strongly undesirable. We studied molecular, physiological and morphological characteristics that can help to detect the presence of F. angustifolia at the population level, either in seed and/or seedling samples, or in adult ash leave samples from natural or managed populations. ...

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