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Wyszukujesz frazę "calcareous grassland" wg kryterium: Temat


Wyświetlanie 1-4 z 4
Tytuł:
Do small-scale gaps in calcareous grassland swards facilitate seedling establishment?
Autorzy:
Baba, W
Kompala-Baba, A.
Powiązania:
https://bibliotekanauki.pl/articles/57390.pdf
Data publikacji:
2005
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
generative reproduction
grassland
Polska
calcareous grassland
gap colonization
seedling
phenology
plant ecology
germination
Opis:
In this study we analyzed gaps originated in different seasons of the year vs. places of close vegetation in calcareous grasslands in terms of their suitability for seedling germination and establishment. Gaps, irrespective of the time of their origin, significantly promoted seedling emergence as compared with close swards. However, the season of gap creation influenced the rate of seedling germination/emergence. Seedlings occurred more frequently in autumn and spring gaps than in the summer ones. The highest mean number of seedlings and of their species were noted in autumn openings. However, the subsequent survival of seedlings in autumn gaps was low. On the contrary, in spring gaps juveniles occurred with the significantly highest mean number, frequency and species richness. The above results pointed to the positive, although very limited role of artificially created gaps as places favouring seedlings establishment.
Źródło:
Acta Societatis Botanicorum Poloniae; 2005, 74, 2
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The small-scale species mobility in calcareous grasslands - example from Southern Poland
Autorzy:
Baba, W
Powiązania:
https://bibliotekanauki.pl/articles/56557.pdf
Data publikacji:
2005
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
small-scale species
Polska
calcareous grassland
plant community
carousel model
community dynamics
Opis:
In this paper I use the different measures of species mobility to describe the fine small-scale dynamics of calcareous grassland built mainly by perennial species and developed in the highly heterogeneous habitat of calcareous rocks. The community showed the low dynamics on a plot-scale (100 m2) and a high one on the scale of 1 m2. However, the studied species differed greatly in calculated indices: turnover rate, (T; 6-64), residence time (RT; 0.5-21.8 y) and carousel time (CT; 4-420 y) as well as the observed tendency to persistence on the spots (PERSIST) and their re-colonisation (AGAIN). This allowed to distinguish the three groups of species: (1) "core species" characterized by high frequency and low T and high CT and RT values, which determine the low dynamics of a community on the plot scale, (2) species with intermediate mobility rate and (3) the group with high mobility rate. The observed cumulative frequencies of all the studied species (CFobs) were much lower than expected under the random re-assignation model (CFRR). Moreover, they were also lower than those predicted by random immigration model (CFRI). The results showed that the "complex carousel" model rather than "single carousel" one explained better the small-scale dynamics of calcareous grasslands.
Źródło:
Acta Societatis Botanicorum Poloniae; 2005, 74, 1
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Coronilla vaginalis - a species new for the flora of Poland
Autorzy:
Mirek, Z.
Nikel, A.
Wilk, L.
Powiązania:
https://bibliotekanauki.pl/articles/58444.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
Coronilla vaginalis
montane species
new species
flora
vascular plant
Tatras Mountains
locality
new locality
calcareous grassland
Opis:
Coronilla vaginalis Lam., a Central European montane species, is reported for the first time from Poland, from the Tatra Mountains. A general map of the taxon’s distribution is given, and the location of the newly recorded stand is shown on a map of Poland and the Tatra National Park. Its habitat, calcareous grassland of the order Seslerietalia, is characterized in detail.
Źródło:
Acta Societatis Botanicorum Poloniae; 2015, 84, 1
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
How do plant communities and flower visitors relate? A case study of semi-natural xerothermic grasslands
Autorzy:
Chmura, D.
Adamski, P.
Denisiuk, Z.
Powiązania:
https://bibliotekanauki.pl/articles/58767.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
plant community
xerothermic grassland
semi-natural calcareous grassland
calcareous vegetation
entomofauna
species richness
sampling effort
phytocoenosis
Festuco-Brometea class
Inuletum ensifoliae Adonido-Brachypodietum pinnati community
transitional plant
grassland
insect
flower visitor
Źródło:
Acta Societatis Botanicorum Poloniae; 2013, 82, 2
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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