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Wyszukujesz frazę "biodiversity conservation" wg kryterium: Wszystkie pola

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    Wyświetlanie 1-4 z 4
    Tytuł:
    The medicinal wood-decay species Laricifomes officinalis in the Alpe Veglia–Alpe Devero Natural Park (Italian Alps): spatial analysis and growth tests of pure cultures
    Autorzy:
    Girometta, Carolina Elena
    Rovelli, Laura
    Bracco, Francesco
    Brescia, Francesca
    Baiguera, Rebecca Michela
    Chiatante, Gianpasquale
    Picco, Anna Maria
    Savino, Elena
    Powiązania:
    https://bibliotekanauki.pl/articles/11543426.pdf
    Data publikacji:
    2021
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    wood decay fungi
    Laricifomes officinalis
    Larix decidua
    biodiversity conservation
    larch
    spatial analysis
    growth test
    pure culture
    natural park
    Alps Mountains
    Italy
    Opis:
    Laricifomes officinalis is a wood-decay fungus that is closely associated with old individuals of Larix decidua. In the twentieth century, L. officinalis was over-harvested because of its medicinal properties; consequently, it has become very rare or almost extinct in the Alps. In this study, we investigated the population of L. officinalis in the Alpe Veglia–Alpe Devero Natural Park (Val d’Ossola, Italy) to assess a preliminary conservation strategy. Population consistency was estimated using field mapping, and spatial analysis was performed on host trees based on topographical and environmental variables. Mycelia were isolated from harvested basidiomata, and strain identity confirmed by molecular analysis of the ITS region. All isolated strains were tested for growth in Petri dishes containing different standard media to determine which strains had the highest growth rates; the fastest growing strains may be selected for future studies and applications. Compared to the control strains from Val Malenco and Parco Nazionale del Gran Paradiso, all strains from Alpe Veglia–Alpe Devero Natural Park had lower growth rates. There was no significant difference between the growth rates of strains from Alpe Veglia and those from Alpe Devero. The results suggest that the population consistency of L. officinalis in the Alpe Veglia–Alpe Devero Natural Park is related to two main factors: habitat preservation and harvesting prohibition. These results confirm the need to protect L. officinalis both inside and outside natural reserves, despite the apparent increase in local populations.
    Źródło:
    Acta Mycologica; 2021, 56, 1; 569
    0001-625X
    2353-074X
    Pojawia się w:
    Acta Mycologica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Genetic and morphological differentiation between Melica ciliata L. and M. transsilvanica Schur (Poaceae) in Europe reveals the non-presence of M. ciliata in the Polish flora
    Autorzy:
    Szczepaniak, M.
    Cieslak, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/58124.pdf
    Data publikacji:
    2011
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    genetic differentiation
    morphological differentiation
    Melica ciliata
    Melica transsilvanica
    Poaceae
    Europe
    Polska
    flora
    biodiversity protection
    wild species
    conservation
    morphological variation
    AFLP marker
    Opis:
    A good knowledge of species delimitation is crucial for the biodiversity protection and the conservation of wild species. We studied the efficiency of AFLP markers and morphological characters to assist species determination for Melica ciliata L. and M. transsilvanica Schur within European range of distribution, including isolated and range-limit populations of "M. ciliata" (i.e. M. cf. ciliata) from the Polish Sudetes, where it is regarded as critically endangered. AFLP markers were found to be more effective then morphological characters (more or less continuous) in distinguishing the both studied species. AMOVA revealed very low genetic diversity within populations and high differentiation among populations of M. ciliata and M. transsilvanica (FST = 0.89 and 0.95, respectively). The species-diagnostic AFLP markers of M. transsilvanica shared with "M. ciliata" from the Sudetes were detected. On the other hand, no species-diagnostic genetic markers of M. ciliata or hybrid-diagnostic markers of M. × thuringiaca were found within "M. ciliata". PCoA and NJ showed an overlapping genetic diversity of "M. ciliata" and M. transsilvanica. Hierarchical AMOVA supported the absence of a significant genotypic distinction between "M. ciliata" and M. transsilvanica. ANOVA showed that the length ratio of lower to upper glumes was the best morphological character to discriminate between M. ciliata and M. transsilvanica. Combined morphological and genetic data show that M. ciliata is not currently present in Poland as its putative Polish populations represent M. transsilvanica. A significant decrease in genetic variability that could influence viability was not observed the in Sudetian populations of M. transsilvanica. However, the population size changes significantly as a result of plant succession. Correction of the northern limit of the continuous distribution of M. ciliata L. in Central Europe is presented.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2011, 80, 4
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Pollination of Polish red list plants: a preliminary statistical survey
    Biologia zapylania roslin z Polskiej czerwonej listy: wstepna analiza statystyczna
    Autorzy:
    Zych, M
    Jakubiec, A
    Powiązania:
    https://bibliotekanauki.pl/articles/28584.pdf
    Data publikacji:
    2008
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    conservation
    Polish red list
    biodiversity
    plant-pollination interaction
    pollination crisis
    plant
    statistical analysis
    Opis:
    One of the important problems of modern conservation biology is the lack of reliable data on plant pollination systems, especially for taxa threatened with extinction. This paper is an attempt to collect and analyze the available literature data on pollination of Polish red list plants. The Polish red list includes 469 angiosperm taxa, over 53% of them are insect-pollinated and visited mostly by bees and fl ies, insects that are also declining in Europe. These numbers however are mainly based on lists of fl ower visitors and detailed studies of pollination biology or breeding system are available for less than 20% of the taxa, with further 10% almost completely unstudied in terms of their life histories. The paper indicates that there is an urgent need to study plant-pollinator relationships in order to better conserve the biodiversity in local and global scales.
    Jednym z poważniejszych problemów współczesnej ochrony przyrody jest brak informacji o systemach zapylania roślin, zwłaszcza gatunków zagrożonych wyginięciem. Niniejsza praca jest próbą zebrania i przeglądu dostępnych danych literaturowych dotyczących biologii zapylania roślin z Polskiej czerwonej listy. Wyniki analizy wskazują, iż spośród 469 taksonów roślin okrytonasiennych umieszczonych na liście, 53% to gatunki owadopylne, zapylane głównie przez pszczołowate i muchówki – owady także zagrożone w skali Europy. Przegląd literatury wskazuje także, że dane te oparte są głównie na opublikowanych listach kwiatowych gości, a dokładne badania biologii zapylania lub systemów reprodukcyjnych są dostępne dla mniej niż 20% badanych taksonów – dla dalszych 10% taksonów brakuje jakichkolwiek informacji w tej dziedzinie. Praca wskazuje potrzebę głębszego zbadania zależności rośliny- zapylacze w celu lepszej ochrony ich zróżnicowania w skali lokalnej i globalnej.
    Źródło:
    Acta Agrobotanica; 2008, 61, 1
    0065-0951
    2300-357X
    Pojawia się w:
    Acta Agrobotanica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Changes in the structure and floristic composition of the limestone grasslands after cutting trees and shrubs and mowing
    Autorzy:
    Baba, W
    Powiązania:
    https://bibliotekanauki.pl/articles/57458.pdf
    Data publikacji:
    2003
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    cutting tree
    restoration
    structure
    floristic composition
    limestone grassland
    biodiversity
    change
    tree
    nature conservation
    secondary succession
    species mobility
    shrub
    Opis:
    The calcareous grasslands belong to the species-rich plant communities in Poland. Most of them are of anthropogenic origin and they need specific management (i.e. periodical cutting suckers of trees and shrubs, grazing or mowing) in order to protect their floristic diversity. Many of calcareous grasslands have been overgrown by shrubs as a result of cessation of traditional management. The aim of this study was to compare the structure and dynamics of xerothermic hazel shrub patches, which were undergoing secondary succession with patches where different management practices aiming at restoration of species-rich limestone grassland were applied. The managed plots had a significantly higher species richness than the control one. However, they strongly differed in their floristic composition from well-preserved limestone grasslands. There were also significant differences observed between both the managed plots. Too intensive management, particularly frequent mowing of herbs resulted in expansion of grass species such as Brachypodium pinnatum and Calamagrostis arundinacea and caused a sharp decline in species richness. The species composition and turnover rate strongly depended on succesional stage (soil layer thickness) of plots at the start of the experiment. The deeper was the soil, the higher was the rate of species turnover and the smaller was the share of xerothermic and thermophilous species. The last mentioned group was dominated by species with a persistent seed bank in the soil, frequently colonizing anthropogenic habitats.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2003, 72, 1
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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