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1

Genetic differentiation between west and east european karyotypic groups of Sorex araneus (Soricomorpha) in Poland

100%
Moska M., Wierzbicki H., Strzala T., Mucha A., Jonkisz A.
Electronic Journal of Polish Agricultural Universities. Series Veterinary Medicine
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2014
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tom 17
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nr 2
2
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Determination of potential glacial refugia and possible migration routes of Campylocentrum (Vandeae, Orchidaceae) species through the Darien Gap

84%
Kolanowska M.
Acta Societatis Botanicorum Poloniae
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2015
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tom 84
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nr 1
The possible glacial refugia of four Campylocentrum species reported from the Darién Gap are estimated based on the ecological niche modeling. The potential migration routes of the studied species are presented. The current ranges of all species designated based on the available floristic data are compared with their potential habitats distribution.
3

Genetic diversity of orchid Malaxis monophyllos over European range as an effect of population properties and postglacial colonization

84%
Jermakowicz E., Brzosko E., Kotowicz J., Wroblewska A.
Polish Journal of Ecology
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2017
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tom 65
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nr 1
Malaxis monophyllos is a rare orchid with a fragmented boreal-montane distribution in Europe where it is associated with both natural swampy and anthropogenic habitats. We employed extensive sampling of M. monophyllos populations from different habitat types, over its whole European geographic range, to examine its genetic diversity patterns and phylogeographic structure using amplified fragment length polymorphisms (AFLPs). Our results revealed the relatively low genetic diversity of M. monophyllos, with the effect of small population sizes and inbreeding as the driving forces operating within the European part of its range. The statistically highest values of genetic diversity were found in populations from the boreal region (average: percentage of polymorphic loci PPL₃ = 21.6%, Nei's gene diversity Hj₃ = 0.144, the rarity index DW₃ = 1.34), while populations from mountainous regions were characterised by a reduced level of genetic diversity (e.g. an average for Alpine populations: PPL₃ = 18.1%, Hj₃ = 0.121, DW₃ = 0.84) in comparison to boreal ones. Our results revealed that the newly established anthropogenic populations in the Polish uplands were probably founded from numerous external sources and should be considered a significant source of the species' genetic diversity. We also confirmed the low genetic differentiation among M. monophyllos populations (FST = 0.074), with the lack of distinguishable genetic clusters, that supports results about the multidirectional gene flow between M. monophyllos populations in Europe, and directed conservation efforts on conserving all suitable for this species habitats.
4
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Glacial refugia and migration routes of the Neotropical genus Trizeuxis (Orchidaceae)

84%
Kolanowska M.
Acta Societatis Botanicorum Poloniae
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2013
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tom 82
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nr 3
The morphology and anatomy of the monotypic genus Trizeuxis make this taxon almost impossible to recognize in fossil material and hereby difficult object of historical geographic studies. To estimate the distribution of potential refugia during the last glacial maximum and migration routes for Trizeuxis the ecological niche modeling was performed. The potential niche modeling was done using maximum entropy method implemented in Maxent application based on the species presence-only observations. As input data climatic variables and the digital elevation model were used. Two models of suitable glacial habitats distribution were prepared – for the studied species and for its host. The compiled map of the suitable habitats distribution of T. falcata and P. guajava during the last glacial maximum (LGM) indicate two possible refugia for the studied orchid genus. The first one was located in the Madre de Dios region and the other one in the Mosquito Coast. The models suggest the existence of two migration routes of Trizeuxis species. The results indicate that the ecological niche modeling (ENM) is a useful tool for analyzing not only the possible past distribution of the species, but may be also applied to determine the migration routes of the organisms not found in the fossil material.
5

Potential refugia in Qinghai-Tibetan Plateau revealed by the phylogeographical study of Swertia tetraptera (Gentianaceae)

84%
Yang L.-C., Zhou G.-Y., Li C.-L., Song W.-Z., Chen G.-C.
Polish Journal of Ecology
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2011
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tom 59
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nr 4
We studied the phylogeography of Swertia tetraptera Maxim, which is an annual herbaceous plant endemic to the Qinghai-Tibetan Plateau (QTP), by sequencing one intergenic chloroplast spacer, trnL-trnF (773 bp). The sampling design included 35 populations and 399 individuals, and spanned the entire distribution of the species. Forty-four haplotypes were characterized, and one of them was widely distributed in all of the populations. The level of differentiation among the populations studied was relatively low (GST = 0.128). Estimates of NST -GST for populations of S. tetraptera indicated that no phylogeographical structure exists, which was supported by the distribution of haplotypes. The neutrality test, mismatch distribution and a ‘star-like’ genealogy all suggested that this species experienced population expansion. According to the number of rare haplotype and geological evidence, this study suggested that two potential refugia existed during the last glaciation: the first refugium was identified in a restricted semi-continuous area around the eastern margin of the plateau; the second refugium was located in the central of QTP. In fact, the findings of our study are somewhat similar as the third phylogeographical structure occurring in the QTP, that is, alpine plants have refugia not only in the edge area but also in the Plateau platform. However, the location of plateau edge and plateau platform refugia is very different among them due to the difference of species-specific characteristic such as distributional range and life history traits.
6

Shallow genetic differentiation in Miniopterus schreibersii (Chiroptera: Vespertilionidae) indicates a relatively recent re-colonization of Europe from a single glacial refugium

67%
Furman A., Oztunc T., Postawa T., Coraman E.
Acta Chiropterologica
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2010
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tom 12
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nr 1
In this study we analyzed 547 sequences of the first hypervariable domain of the control region of Miniopterus schreibersii sampled in colonies located in the western- and eastern-most borders of its distribution. We assessed genetic diversity of these colonies, quantified differences between them, and pointed out to their putative ancestral origin. Our results suggest that the extant European populations of M. schreibersii are descendants of the ancestors that survived the last glacial maximum in a single glacial refugium, probably located in the north-western Anatolia. According to our model, a rapid population expansion and major re-colonization events started after the climatic change that followed the end of the last glacial maximum. Our suggestions are supported by the shallow genetic differentiation between the eastern and western colonies of M. schreibersii, high genetic diversity observed in the eastern colonies, and population expansion time estimated for ca. 15.6 kyr BP.
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