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PL
Badania terenowe prowadzono w latach 2002-2003 na dwóch obiektach różnie użytkowanych rolniczo w miejscowości Kaczorów. Obiekt pierwszy (A) stanowiła łąka kośna porośnięta zbiorowiskiem typu Festuca rubra i Poa pratensis, obiekt drugi (B) stanowiła łąka nieużytkowana rolniczo, ze zbiorowiskiem typu Festuca rubra, Festuca pratensis, Polygonum bistorta i Anthoxanthum odoratum. Oba obiekty badawcze zlokalizowane były na glebie deluwialnej próchnicznej. Na wydzielonych obiektach w drugiej połowie czerwca wykonano zdjęcia florystyczne metodą Brawn-Blanqueta. W materiale glebowym pobranym z wierzchniej warstwy gleby (0-20 cm), średnio dla badanego terenu oraz z powierzchni bezpośrednio przylegającej do Dactylorhiza majalis, określono ogólnie przyjętymi metodami: pH, zawartość substancji organicznej, makroelementów oraz przewodnictwo elektryczne. Uzyskane wyniki wykazały, że gleba ze stanowisk bezpośrednio przylegających do Dactylorhiza majalis charakteryzowała się wyższymi badanymi parametrami.
EN
The experiments were carried out in 2002-2003, at two sites of different agricultural usage, localized in Kaczorów. The first site (A) was a meadow with the community of Festuca rubra and Poa pratensis type, the other site (B) covered was an abandoned meadow with community of Festuca rubra, Festuca pratensis, Polygonum bistorta and Anthoxanthum odoratum type. Both meadows grew on deluvial, humus soil. Floristic surveys were taken in mid June, using the Brawn-Blanquet method. The top soil layer (20 cm) samples were taken from analysed areas on average and also from the sites adjacent to Dactylorhiza majalis; their pH, electrical conductivity, contents of organic matter and macroelements were determined by conventional methods. Soil samples from sites adjacent to Dactylorhiza majalis were characterized by higher values of investigated parameters.
EN
Changes in the microtubular cytoskeleton of Dactylorhiza majalis (Rchb.) Hunt et Summerh. (Orchidaceae) during microsporogenesis were investigated by the immunofluorescence method. Dactylorhiza microsporocytes in microsporangia divide into tetrads after a regular meiosis, which is completed with simultaneous cytokinesis. Three typical configurations of the microtubular cytoskeleton appear during microsporogenesis: the microtubular system in the cytoplasm and at the nuclear envelope, meiotic spindles, and phragmoplasts. Microtubules of the early prophase I microsporocyte are dispersed throughout the cortical cytoplasm, and later the arrays of microtubules are visible at the nuclear envelope. During metaphase I, the microtubules form the spindle which also acts during anaphase I. At telophase I, interzonal microtubules of the first meiotic spindle disappear, and new microtubular arrays extend from the nuclei towards the equatorial plane of the microsporocyte. There, these microtubules form the phragmoplast, which disintegrates before the second meiotic division. During the second meiotic division, the microtubular cytoskeleton repeats the configurations from the first meiotic division. The microtubular arrays emanating from the telophase II nuclei form interconnections of all non-sister and sister nuclei. During the formation of the cell plates between the future microspores, these microtubular arrays disappear. The results support the view that cytoskeletal configurations participate in the formation of the nuclear-cytoplasmic domains of the dividing microsporocyte in its transition from mononucleate microsporocyte to undivided dyad, and to four microspore domains after the second meiotic division.
EN
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.
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2015
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tom 71
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nr 2
PL
Nowe stanowisko storczyków - kukułki szerokolistnej Dactylorhiza majalis i podkolana białego Platanthera bifolia znalezione zostało w 2014 roku, w wierzchowinowej, południowej części Ojcowskiego Parku Narodowego w Białym Kościele (przysiółek Murownia). Na niewielkim obszarze ok. 70 m2 rosło 20 osobników kukułki i osiem podkolana. Gatunki te należą do pospolitych w Polsce, jednak na terenie Ojcowskiego PN są bardzo rzadkie. Ich populacje, zagrożone przez rozrastające się drzewa i krzewy, wymagają objęcia systematycznymi zabiegami ochrony czynnej.
EN
The new locality of Dactylorhiza majalis and Platanthera bifolia was found in the Biały Kościół village - Murownia hamlet (Fig. 1), the southern part of the Ojców National Park. A total of 20 specimens of Dactylorhiza and 8 specimens of Platanthera grow at a small site of about 70 m2. Being quite common in the territory of Poland, the above-mentioned species are very rare in the Ojców National Park. The orchids occurred in the plant association of Arrhenatheretum elatioris with a large contribution of thermophilic species. The biometric measurements were taken for each specimen (Table 1). The average values of biometric measurements of the examined units are close to average values of parameters reported in other papers. The location is endangered by secondary succession. The active protection of the site is highly recommended to preserve the population.
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nr 2
EN
We investigated the flowering probability and flower production in relation to plant size in a terrestrial orchid, Dactylorhiza majalis at 10 meadow sites in central and southwestern Poland. These sites differed in altitude (low, high) and management (presence or absence of mowing). At all sites, concentrations of nutrients in the soil were also measured. The probability of flowering increased significantly with the size of the plant in all populations, indicating that individuals do not flower until they reach a threshold size. Populations at high altitudes and the unmown sites had significantly lower threshold sizes for reproduction and showed sharp increase in flowering probability with plant size, compared to other populations. The threshold sizes for reproduction tended to decrease at sites rich in N and Mg and poor in P and S. Flower production was also size-dependent in all populations. Considerable between-site differences were found in the slope and the intercept of the regression between plant size and flower production. Flower production at some sites, at high altitudes, increased more steeply with plant size than at other sites. However, no pattern in size-dependent flower production was found relative to the measured environmental variables. Most of the size-dependent components of flowering probability were related to each other but not with the size-dependent flower production.
PL
Rzadkie gatunki storczyków znaleziono w północnej części Pogórza Rożnowskiego (Pogórze Karpackie). W zlewni potoku Pleśnianka (dopływ rzeki Białej) stwierdzono występowanie: buławnika wielkokwiatowego Cephalanthera damasonium, buławnika mieczolistnego C. longifolia, kukułki szerokolistnej Dactylorhiza majalis, kruszczyka szerokolistnego Epipactis helleborine, kruszczyka purpurowego E. purpurata, podkolana białego Platanthera bifolia, podkolana zielonawego P. chlorantha oraz gnieźnika leśnego Neottia nidus-avis. Rosły one w lasach liściastych: grądzie i buczynie. W latach 2007–2010 prowadzono obserwację populacji tych gatunków rosnących na sześciu stanowiskach. Zagrożeniem dla populacji storczyków na jednym ze stanowisk mogą być cięcia w drzewostanie powodujące lokalnie zmianę warunków świetlnych i termicznych, masowy pojaw siewek i podrostów drzew oraz zrywanie kwitnących pędów storczyków.
EN
Protected and threatened species of orchids were found in the drainage basin of the Pleśnianka Stream in the Rożnów Foothills (the Carpathian Foothills). Eight species of Orchidaceae were observed at six sites between 2007–2010 (Fig. 1). The orchid species list consists of Cephalanthera damasonium, C. longifolia, Dactylorhiza majalis, Epipactis helleborine, E. purpurata, Neottia nidus-avis, Platanthera bifolia and P. chlorantha. The orchids grew mainly in forest communities: the associations Tilio-Carpinetum and Dentario glandulosae-Fagetum. The real threat to the observed populations are changes in habitat conditions induced by forest management (forest cutting; site IV) and picking the orchids by tourists (mainly site II)
PL
Łąki trzęślicowe stanowią siedlisko dla bardzo wielu rzadkich i chronionych gatunków roślin. Podlegają jednak gwałtownym i nieodwracalnym przemianom na skutek działalności człowieka. Konieczne jest prowadzenie ciągłego monitoringu gatunków występujących w tych nielicznych już dziś siedliskach. W niniejszej pracy określono stan populacji kilku z rzadkich gatunków występujących na zanikających łąkach trzęślicowych, objętych obszarem Natura 2000 na terenie miasta Krakowa
EN
The main aim of present study was to examine abundance and structure of populations of rare, endangered and legal protected plants in Cracow surroundings. The following species were observed: Dactylorhiza majalis, Dianthus superbus, Iris sibirica, Trollius europaeus and Veronica longifolia. These species represent clonal plants. A serious threat to these plants is systematic transformation and diminishing of their typical habitat – phytocoenoses of the Molinietum coeruleae plant association. Molinia meadows are connected with extensive agriculture. These meadows, not fertilised and mown, are losing their unusual species richness. Populations of Dianthus superbus and Trollius europaeus were consisted of 26 and 32 ramet clusters in area “Sidzina 1”. Dactylorhiza majalis (189 ramets) were observed in areas: “Sidzina 1” and “Tyniec”. The clusters of Iris sibirica (110) were occurring in all areas. Plants of Veronica longifolia were creating 12 clusters and 2 patches. The best method of protecting the studied species is creating gaps combined with removal of expansive plants
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