Genetic diversity of Betula nana in Sweden and conservation implications for protection of relict Polish populations
The natural range of the dwarf birch (Betula nana L.) includes the boreal, subarctic and arctic regions of Europe, Asia and North America, where it is relatively common. In Poland, it is a relict species occurring in fragmented populations. Using the random amplification of polymorphic DNA (RAPD) te...
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Online Access: | https://doi.org/10.2478/ffp-2021-0023 |
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doaj-7c639bdc94c3458fa9f3f0ad01b9d4362021-10-03T07:42:46ZengSciendoFolia Forestalia Polonica: Series A - Forestry2199-59072021-09-0163322523110.2478/ffp-2021-0023Genetic diversity of Betula nana in Sweden and conservation implications for protection of relict Polish populationsDąbrowska Grażyna B.0Dąbrowski Henryk P.1Szyp-Borowska Iwona2Nicolaus Copernicus University in Toruń, Faculty of Biological and Veterinary Sciences, Department of Genetics, Lwowska 1, 87-100Toruń, PolandBiskupin Archaeological Museum, Dendroarchaeological Laboratory, Biskupin 17, 88-410Gąsawa, PolandForest Research Institute, Department of Silviculture and Genetics of Forest Trees, Sękocin Stary, Braci Leśnej 3, 05-090Raszyn, PolandThe natural range of the dwarf birch (Betula nana L.) includes the boreal, subarctic and arctic regions of Europe, Asia and North America, where it is relatively common. In Poland, it is a relict species occurring in fragmented populations. Using the random amplification of polymorphic DNA (RAPD) technique, we investigated the genetic diversity of the four Swedish populations representing a part of the continuous range of dwarf birch. With the knowledge of the level of genetic diversity of a population from a continuous distribution, we can assess the genetic status of polish populations and answer the question if habitat fragmentation and a decrease in population size lead to a loss in genetic diversity. Knowledge of genetic diversity is important for species conservation, especially to predict their ability to respond to environmental pressures. We found that the populations Abisko, Malbo, Gällivare and Storlien, which are located at the edge of the natural range of B. nana and occupy different habitats, are genetically diverse to varying degrees. The northern populations from Abisko and Gällivare showed a lower level of genetic polymorphism than the population from Malbo, the southernmost site of dwarf birch in Sweden. The data presented indicate higher genetic diversity existed within populations, whereas genetic differentiation between populations was lower. The high level of genetic differentiation within B. nana populations that were analysed in the present study may be explained by a limited capacity for dispersal among populations via both pollen and seeds.https://doi.org/10.2478/ffp-2021-0023dwarf birchrapdpopulationrelict speciesgenetic diversity |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Dąbrowska Grażyna B. Dąbrowski Henryk P. Szyp-Borowska Iwona |
spellingShingle |
Dąbrowska Grażyna B. Dąbrowski Henryk P. Szyp-Borowska Iwona Genetic diversity of Betula nana in Sweden and conservation implications for protection of relict Polish populations Folia Forestalia Polonica: Series A - Forestry dwarf birch rapd population relict species genetic diversity |
author_facet |
Dąbrowska Grażyna B. Dąbrowski Henryk P. Szyp-Borowska Iwona |
author_sort |
Dąbrowska Grażyna B. |
title |
Genetic diversity of Betula nana in Sweden and conservation implications for protection of relict Polish populations |
title_short |
Genetic diversity of Betula nana in Sweden and conservation implications for protection of relict Polish populations |
title_full |
Genetic diversity of Betula nana in Sweden and conservation implications for protection of relict Polish populations |
title_fullStr |
Genetic diversity of Betula nana in Sweden and conservation implications for protection of relict Polish populations |
title_full_unstemmed |
Genetic diversity of Betula nana in Sweden and conservation implications for protection of relict Polish populations |
title_sort |
genetic diversity of betula nana in sweden and conservation implications for protection of relict polish populations |
publisher |
Sciendo |
series |
Folia Forestalia Polonica: Series A - Forestry |
issn |
2199-5907 |
publishDate |
2021-09-01 |
description |
The natural range of the dwarf birch (Betula nana L.) includes the boreal, subarctic and arctic regions of Europe, Asia and North America, where it is relatively common. In Poland, it is a relict species occurring in fragmented populations. Using the random amplification of polymorphic DNA (RAPD) technique, we investigated the genetic diversity of the four Swedish populations representing a part of the continuous range of dwarf birch. With the knowledge of the level of genetic diversity of a population from a continuous distribution, we can assess the genetic status of polish populations and answer the question if habitat fragmentation and a decrease in population size lead to a loss in genetic diversity. Knowledge of genetic diversity is important for species conservation, especially to predict their ability to respond to environmental pressures. We found that the populations Abisko, Malbo, Gällivare and Storlien, which are located at the edge of the natural range of B. nana and occupy different habitats, are genetically diverse to varying degrees. The northern populations from Abisko and Gällivare showed a lower level of genetic polymorphism than the population from Malbo, the southernmost site of dwarf birch in Sweden. The data presented indicate higher genetic diversity existed within populations, whereas genetic differentiation between populations was lower. The high level of genetic differentiation within B. nana populations that were analysed in the present study may be explained by a limited capacity for dispersal among populations via both pollen and seeds. |
topic |
dwarf birch rapd population relict species genetic diversity |
url |
https://doi.org/10.2478/ffp-2021-0023 |
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