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Explaining Rarity of the Dry Grassland Perennial Astragalus exscapus
Springer Science and Business Media LLC - Tập 45 - Trang 303-321 - 2010
In Central Europe several plant species of dry grasslands are particularly rare. Here I investigate whether habitat requirements, reproduction, and dispersal potential can contribute to the rarity of Astragalus exscapus (Fabaceae) growing in dry grassland habitats in dry regions of Europe. In addition, I question whether historic events might have contributed to the present-day rarity of A. exscap...... hiện toàn bộ
A new species of the genusEulophia R. Br. (Orchidaceae) from Minas Gerais, Brazil
Springer Science and Business Media LLC - Tập 26 - Trang 101-106 - 1991
Named after its collector José Badini,Eulophia badinii is described and distinguished from the only other known species of the genus from Brazilian territory. Floral analysis and type diagnosis are used for the description, which is based mainly on floral characters.
Secondary vegetation succession in the Belianské Tatry Mts. three decades after grazing
Springer Science and Business Media LLC - Tập 25 - Trang 349-356 - 1990
Vegetation changes in seminatural plant communities in the Belianské Tatry Mts. have been studied three decades after grazing or mowing. The changes are slow, they have reached the association level only after about 20 years.
E. Lange, L. Jeschke and H.-D. Knapp Ralswiek und Rügen-Landschaftsentwicklung und Siedlungsgeschichte der Insel Rügen Seit dem Spätglazial
Springer Science and Business Media LLC - Tập 23 Số 2 - Trang 216-216 - 1988
Taxonomy of theHieracium alpinum group in the sudeten Mts., the West and the Ukrainian East Carpathians
Springer Science and Business Media LLC - Tập 32 - Trang 69-97 - 1997
A taxonomic revision of theHieracium alpinum group (sensu Flora Europaea) in the Sudeten Mts., the West and the Ukrainian East Carpathians is provided. Six species are distinguished in the area studied, viz.Hieracium alpinum, H. halleri, H. augusti-bayeri, H. melanocephalum, H. tubulosum, andH. schustleri. H. alpinum occurs throughout the mountain ranges studied, three other taxa are endemic to th...... hiện toàn bộ
Zur Syntaxonomie mitteleuropäischerLemnetea-Gesellschaften
Springer Science and Business Media LLC - Tập 13 - Trang 1-17 - 1978
Nach Vorbemerkungen über Umgrenzung und Probeflächenwahl bei den freischwimmenden Wasserwurzler-Gesellschaften werden die diagnostisch wichtigen Arten derLemnetea sowie Grundsätze einer objektiven Abgrenzung und Gliederung artenarmer Syntaxa behandelt. Es folgt eine Zusammenstellung der bisher aus Mitteleuropa bekannt gewordenen 17 Assoziationen einschliesslich ihrer Untergliederung in Subass. und...... hiện toàn bộ
S. Tuhkanen Climatic parameters and indices in plant geography
Springer Science and Business Media LLC - Tập 16 - Trang 292-292 - 1981
Impact of habitat on pollen germination in roses
Springer Science and Business Media LLC - Tập 15 - Trang 407-413 - 1980
Morphological and physiological quality of the pollen was studied in fourRosa species growing in habitats with different calcium carbonate content. In soils rich in calcium the pollen showes in all cases better physiological quality which is an assumption for good fertility. It may be also one of the reasons for species diversity and population abundance of roses in native habitats on calcareous s...... hiện toàn bộ
The seed bank in an estonian calcareous grassland: Comparison of different successional stages
Springer Science and Business Media LLC - Tập 32 - Trang 1-14 - 1997
Seed bank species-composition and seed-density were determined in a successional calcareous (alvar) grassland in western Estonia. Three similar study areas were chosen to compare two different successional stages: open alvar grassland and overgrown areas with young pine forest 30 to 40 years old. In both successional stages, the centre and the edge of a relatively uniform stand were examined. Fift...... hiện toàn bộ
Taxonomic studies in theFruticosae group ofPotentilla from Pakistan and Kashmir andP. ochreata Lindl.: A forgotten species
Springer Science and Business Media LLC - - 1991
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