Temporal changes of aquatic macrophytes vegetation in a lowland groundwater feed eutrophic course [Klatovske Rameno, Slovakia]

• Autorzy: Otahel'ova H. , Hrivnak R. , Valachovic M. , Janauer G.A.
• Języki publikacji: EN

Abstrakty

EN

Klátovské rameno is the lowland slow-flowing groundwater feed eutrophic tributary of the Malý Dunaj River (Danube Plain), where our study of temporal changes of aquatic macrophytes vegetation was realised in 1999 and 2005. For survey of aquatic vascular macrophytes the Kohler’s method (Janauer 2003) was used, which is compliant with European standard EN 14184. Altogether 35 aquatic macrophyte species were recorded during the survey. Nuphar lutea persisted as the most dominant species in 1996 and 2005. Species diversity increased slightly after the nine years: ten species immigrated to the watercourse. The changes in species abundance have shown weak differences, however the abundance of Sparganium emersum has increased markedly. Alien species Elodea canadensis and both S. emersum and Hydrocharis morsus-ranae significantly enlarged their distribution in the stream. The ecological quality of the river, based on the aquatic macrophytes assessment criteria, was slightly impaired after nine years, but still 90% of its studied course has a high or good ecological status.

Słowa kluczowe

EN

diversity; botany; aquatic plant; vegetation; lowland eutrophic stream; ecological status; distribution; Slovakia; Klatovske Rameno; temporal change

• Wydawca: -
• Czasopismo: Acta Societatis Botanicorum Poloniae
• Rocznik: 2007
• Tom: 76
• Numer: 2
• Opis fizyczny: p.141-150,fig.,ref.

Twórcy

autor

Otahel'ova H.

• Slovak Academy of Sciences, Dubravska cesta 14, SK-845 23 Bratislava, Slovak Republic

autor

Hrivnak R.

autor

Valachovic M.

autor

Janauer G.A.