Habitat and growth conditions of the rare Potamogeton hybrids: P. x sparganifolius Least. ex. Fr. and P. x nericius Hagstr. in the Drawienski National Park

• Autorzy: Kraska M. , Piotrowicz R. , Kujawa-Pawlaczyk J.
• Języki publikacji: EN

Abstrakty

EN

The two pondweed taxa, new for the Polish flora, were found in the Drawa River in the Drawieński National Park (north-western Poland). Patches of P. x sparganiifolius started about 400 m below the mouth of the left-bank tributary, the Korytnica River, and ended about 5.5 km further downstream. The population colonized mainly a sandy substrate with varied particle size, moderately deep water, and moderate water flow rate. The patches were very dense and composed nearly exclusively of P. x sparganiifolius. They occurred mainly in the main current of the Drawa, and were up to several dozen metres long. By contrast, P. x nericius was found only in a small creek with stagnant water, at the edge of a patch dominated by P. x sparganiifolius, on a substrate composed of mud and sand, at the depth of 40-60 cm.

Słowa kluczowe

EN

habitat; Poland; growth condition; Potamogeton; pondweed; Drawienski National Park; hybrid; Potamogeton x sparganifolius; aquatic plant; Drawa River; aquatic ecosystem; distribution; Potamogeton x nericius

• Wydawca: -
• Czasopismo: Acta Societatis Botanicorum Poloniae
• Rocznik: 2004
• Tom: 73
• Numer: 1
• Opis fizyczny: p.47-51,fig.,ref.

Twórcy

autor

Kraska M.

• Adam Mickiewicz University, Drzymaly 24, 60-613 Poznan, Poland

autor

Piotrowicz R.

autor

Kujawa-Pawlaczyk J.