Folia Geobotanica

Krahulec, Frantiŝek

doi: 10.1007/bf02821948pmid: N/A

Julve, Philippe

doi: 10.1007/bf02821947pmid: N/A

Rejmánek, Marcel

doi: 10.1007/BF02821950pmid: N/A

Mucina, Ladislav

doi: 10.1007/bf02821951pmid: N/A

Carmona, Eusebio Cano;Luque, Manuel Melendo;Tendero, Francisco Valle

doi: 10.1007/BF02821942pmid: N/A

Abstract The rupicolous vegetation of theAsplenietea trichomanis in the south-western Iberian Peninsula is analysed using the methods of the Zürich-Montpellier School. Phytosociological tables, and biogeographical, ecological and floristic data are given for a number of syntaxa. A phytosociological synopsis of the studied vegetation was made for the entire region. Four new syntaxa are described: theCoincyo logirostri-Dianthetum lusitani, Jasiono marianae-Dianthetum lusitani jasionetosum tomentosae, Digitali thapsi-Dianthetum lusitani conopodietosum ramosi andSedo hirsuti-Polypodietum cambrici polypodietosum interjecti.

Mucina, Ladislav

doi: 10.1007/BF02821951pmid: N/A

Hroudová, Zdenka; Moravcová, Lenka; Zákravský, Petr

doi: 10.1007/bf02821943pmid: N/A

Differences between two subspecies ofBolboschoenus maritimus (L.)Palla (=Scirpus maritimus L.) in different habitats (littoral and terrestrial) are partly due to variations in the buoyancy of their achenes, caused by different anatomical structure of the fruits. This hypothesis was tested by comparing fruit buoyancy and anatomy of both subspecies at several localities.Plants were sampled fromBolboschoenus maritimus subsp.maritimus (plants with branched inflorescences and triangular fruits, 4 localities) andB. maritimus subsp.compactus (Hoffm.)Hejný (plants with compact inflorescences and prevailing concave fruits, 4 localities) in the Czech and Slovak Republics, andB. maritimus subsp.compactus (plants with compact inflorescences and convex fruits, 1 locality) from the coast of South Sweden. From each locality a plant with several tubers connected by rhizomes was taken and transferred into the experimental garden; from these cultivated plants (clones) mixed samples of fruits collected from each clone were used for buoyancy tests and a study of their anatomy.Fruit buoyancy was found to depend on the anatomical structure of the pericarp—the presence of aeriferous tissue in the exocarp serves as the main floating organ. This differentiated all plants studied into two groups: short-floating subsp.maritimus, with a thin or none acriferous tissue in the exocarp, and long-floating subsp.compactus with well developed aeriferous tissue. Differences in fruit buoyancy corresponds to differences in the prevailing habitat types of both subspecies studied in the inland sites: the frequent occurrence of subsp.compactus in temporarily flooded terrestrial habitats contrasts with the prevalence of subsp.maritimus in the littoral of water bodies. This is an example of intra-specific ecological differentiation leading to differentiation in wetland communities.

Moravec, Jaroslav;Chytrý, Milan;Hroudová, Zdenka;Kolbek, Jiří;Blažková, Denisa;Hadač, Emil;Mártonfi, Pavol;Kaplan, Zdeněk;Chrtek, Jindřich;Krahulec, František;Svobodová, Helena;Marhold, Karol;Skočdopolová, Blanka;Slavik, Bohdan;Pyšek, Petr;Kindlmann, Pavel;

Mucina, Ladislav

doi: 10.1007/bf02821945pmid: N/A

Krahulec, Frantiŝek

doi: 10.1007/bf02821944pmid: N/A

Several texbooks of phytocoenology (plant sociology) are compared. There seems to be a basic difference between Russian and Central European authors. The Russian authors (Naumova, Rabotnov) devote substantial parts of their textbooks to functional elements of communities (populations and consortias) and to their interactions. On the other hand, the Central European authors (Dierßen, Dierschke, Moravec) devote a lot of space to methodology of community description. The deal with classification, syntaxonomy and mapping; their view of communities as units enables them to treat the relation to habitat factors extensively.