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Wyszukujesz frazę "Orchid" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
Current status of the population of Epipactis palustris (L.) Crantz (Orchidaceae) in the Wielkopolska National Park
Autorzy:
Kluza-Wieloch, M.
Wyrzykiewicz-Raszewska, M.
Powiązania:
https://bibliotekanauki.pl/articles/790605.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Przyrodniczy w Poznaniu
Tematy:
present state
plant population
variability
Epipactis palustris
marsh helleborine
orchid
Orchidaceae
Wielkopolski National Park
Opis:
The aim of this study was to determine the current status of the population of marsh helleborine at a locality in the Wielkopolska National Park. Variability in generative shoots was analysed. Recorded results were compared with a study published in the 1990's, in which this locality was described. Since that time the area covered by that population has decreased; nevertheless, it exhibits characteristics of being in a good condition. In that population three forms of that species were reported: f. palustris, f. longibracteata and f. ochroleuca. The greatest threat for the existence of that heliophilous orchid was connected with the overgrowing of its habitat, for this reason measures should be taken to prevent succession and encroachment of trees and shrubs to that area.
Źródło:
Steciana; 2016, 20, 4
1689-653X
Pojawia się w:
Steciana
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Monitoring of orchid population in the area of Pierzchno, county of Sroda Wielkopolska (Wielkopolska)
Autorzy:
Kluza-Wieloch, M.
Owczarek, S.
Powiązania:
https://bibliotekanauki.pl/articles/790647.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Przyrodniczy w Poznaniu
Tematy:
monitoring
orchid
plant population
Orchis morio
Dactylorhiza majalis
Pierzchno area
Sroda Wielkopolska town
Wielkopolska region
Opis:
The subject of the research was the population of orchid growing in the area of Pierzchno in Wielkopolska. This position was found in 2001 where two kinds of orchids were recorded – Orchis morio and Dactylorhiza majalis. Male orchid occurs in the particular position in this geographical region. Quite numerous population of Dactylorhiza majalis (broad-leaved marsh orchid) and counting only a few specimens of the population of Orchis morio were followed in 2013–2015. The research concerned both individual and group features. During this period, we observed a clear progression of broad-leaved marsh orchid population. It resulted in an increase in the number of ramets and the area occupied by it. In the first year of research two experimental plots were extracted and in the next growing season, a third surface was found, occupied by the species. Locating juveniles in the second season also confirms the population dynamics. In the last year of observation, orchids appeared only on the second surface, which substantially increased its dimensions. Unfortunately, in the case of populations of the male orchid clear regression was noted because fewer individuals grew from year to year. On the meadow nearby Pierzchno favourable living conditions were found for Dactylorhiza majalis and unfavourable ones for Orchis morio, which could lead to the disappearance of this population.
Źródło:
Steciana; 2015, 19, 3
1689-653X
Pojawia się w:
Steciana
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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