<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml"><p>The distribution and communities of two annual grasses <italic>Crypsis aculeata</italic> and <italic>Heleochloa schoenoides</italic> were studied in Slovakia during 2003-2007. Herbarium and field data were used to reconstruct the occurrence of both taxa. A strong decline in <italic>C. aculeata</italic> localities was observed. This was mainly due to the destruction of periodically flooded saline habitats. By contrast, the occurrence of <italic>H. schenoides</italic> was changed only slightly. This species survives in secondary habitats (rural roads, field margins, field depressions). Point maps of historical and recent distribution are presented. Halophile vegetation of <italic>Crypsis aculeata</italic> and <italic>Heleochloa schoenoides</italic> has been sampled with the adapted Braun-Blanquet method. All collected relevés have been classified using the JUICE software. The results showed that the <italic>Crypsidetum aculeate</italic> Wenzl 1934 community is missing now in Slovakia, but <italic>Heleochloetum schoenoidis</italic> (Soó 1933) Topa 1939 was still recorded at a few sites. However, the community contained many ruderal plant species.</p></abstract>

The distribution and communities of two annual grasses Crypsis aculeata and Heleochloa schoenoides were studied in Slovakia during 2003-2007. Herbarium and field data were used to reconstruct the occurrence of both taxa. A strong decline in C. aculeata localities was observed. This was mainly due to the destruction of periodically flooded saline habitats. By contrast, the occurrence of H. schenoides was changed only slightly. This species survives in secondary habitats (rural roads, field margins, field depressions). Point maps of historical and recent distribution are presented. Halophile vegetation of Crypsis aculeata and Heleochloa schoenoides has been sampled with the adapted Braun-Blanquet method. All collected relevés have been classified using the JUICE software. The results showed that the Crypsidetum aculeate Wenzl 1934 community is missing now in Slovakia, but Heleochloetum schoenoidis (Soó 1933) Topa 1939 was still recorded at a few sites. However, the community contained many ruderal plant species.

Distribution and Communities of <italic>Crypsis Aculeata</italic> and <italic>Heleochloa Schoenoides</italic> in Slovakia

Department of Botany, Slovak University of Agriculture, Tr. A. Hlinku 2, SK-949 76 Nitra, Slovakia

Institute of Botany, Slovak Academy of Sciences, Dúbravská cesta 14, SK-84523, Bratislava, Slovakia

Department of Botany and Zoology, Masaryk University, Kotlářská 2, CZ-611 37 Brno, Czech Republic

Nábrežná 8, SK-941 03 Úl'any nad Žitavou, Slovakia

Hacquetia

Distribution and Communities of  and  in Slovakia

The distribution and communities of two annual grasses Crypsis aculeata and Heleochloa schoenoides were studied in Slovakia during 2003-2007. Herbarium and...

Distribution and Communities of Crypsis Aculeata and Heleochloa Schoenoides in Slovakia

Pubblicato online: 04 ago 2008

Pagine: 5 - 20

DOI: https://doi.org/10.2478/v10028-008-0001-8

Parole chiave
Crypsis aculeata, Heleochloa schoenoides, halofiti, slana tla, razširjenost, vegetacija, Slovaška

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