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Wyszukujesz frazę "marginal population" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
Ecological and genetic aspects of distribution of the marginal populations of Swiss stone pine (Pinus cembra L.) in Ukrainian Carpathians
Autorzy:
Mohytych, Vasyl
Klisz, Marcin
Yatsyk, Roman
Hayda, Yuriy
Sishchuk, Mariana
Powiązania:
https://bibliotekanauki.pl/articles/2042495.pdf
Data publikacji:
2019
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
Swiss stone pine
Eastern Carpathian mountains
habitats fragmentation
gene conservation
marginal population
Opis:
Current distributions of Swiss stone pine mostly cover the mountain regions of Europe (Alps and Carpathians). Easternmost distribution of this species is located in western Ukraine. Due to environmental fragmentation in Eastern Carpathians and competition with Norway spruce and other species, marginal populations of Swiss stone pine create isolated island, where other species are not able to cope with harsh conditions. Still, Pinus cembra L. play an important role for soil-formation and soil-protection in high elevations. The evidence of recent reduction in the area of Swiss stone pine raises the question whether the introduction of this species at lower altitudes can be successful? According to the studies conducted on reciprocal transplant experiments, Swiss stone pine population from higher elevation are able to profit in low elevation sites. Thus, parallelly with gene conservation activity, the possibilities of assisted migration should be recognized for this species.
Źródło:
Folia Forestalia Polonica. Series A . Forestry; 2019, 61, 3; 242-246
0071-6677
Pojawia się w:
Folia Forestalia Polonica. Series A . Forestry
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
ISSR analysis points to relict character of Aconitum bucovinense Zapal. (Ranunculaceae) at the range margin
Autorzy:
Boron, P.
Zalewska-Galosz, J.
Sutkowska, A.
Zemanek, B.
Mitka, J.
Powiązania:
https://bibliotekanauki.pl/articles/59093.pdf
Data publikacji:
2011
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
Carpathians Mountains
conservation genetics
endemic species
marginal population
schizo-endemism
relict population
Aconitum bucovinense
Ranunculaceae
Polish Red Data Book of Plants
genetic diversity
genetic structure
ISSR technique
Opis:
Aconitum bucovinense, a high-mountain species endemic to the Eastern and Southern Carpathians, including the Apuseni Mountains, is legally protected and classified in the Polish Red Data Book of Plants. It attains its NW geographical range in two peripheral populations in the Western Bieszczady Mountains (Polish Eastern Carpathians), isolated by a distance of 13.1 km. PCR-ISSR analysis has been used to elucidate the within- and among-populational levels of species genetic diversity. A UPGMA and block clustering showed discreteness of the populations and subpopulations based on ISSR banding pattern. Analysis of Molecular Variance (AMOVA) revealed significant divergence (P = 0.024) of the two marginal populations and highly significant (P < 0.001) differentiation of subpopulations within populations. The theta index calculated for the two marginal populations and the core population in the Carpathians was 0.131 ±0.030 S.D. Most of the population-genetic diversity indices of the marginal populations were not different from those in the core area but the Shannon’s and rarity indices were lower in the marginal populations. It seems that founder effect and subsequent genetic bottleneck resulted in a fine-scale population genetic structure. The marginal populations under study need a relevant recovery program to maintain their genetic diversity.
Źródło:
Acta Societatis Botanicorum Poloniae; 2011, 80, 4
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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