Planktic unsheathed filaments (Cyanophyceae) with polar and central gas vacuoles II. Biology, population dynamics and biotopes of Limnothrix redekei (VAN GOOR) MEFFERT
Meffert, Maria-Elisabeth
Archiv für Hydrobiologie Volume 116 Number 3 (1989), p. 257 - 282
71 références bibliographiques
publié: Oct 5, 1989
DOI: 10.1127/archiv-hydrobiol/116/1989/257
ArtNo. ESP141011603000, Prix: 29.00 €
Abstract
The susceptibility of L. redekei (formerly Osicllatoria) to lysis and nitrogen deficiency is shown. Lysis, with release of cell contents, intensified under Cinorg-, N- or P-deficiency. The interaction between bacteria and L. redekei supports algal growth with organic N-compounds which are hardly metabolized by axenic algae. — Distribution, area and characteristics of lakes with L. redekei blooms is presented. L. redekei populations were studied in the Eastholstein Edebergsee for 5 years. Dynamics of physical, chemical and biological variables are given. Population dynamics, the duration of the growth period from September to June and the occurrence of epi- and meta/hypolimnetic maxima are discussed with respect to algal properties and adaptability of photosynthetic behaviour.
Mots-clefs
Lysis • Limnothrix redekei • Osicllatoria • nitrogen • algal • Eastholstein • Edebergsee