- 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