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Submerged vegetation of inner coastal waters of the German Baltic Sea was analysed from 1999 to 2007. 108 transects in 23 water bodies were investigated and 28 species, including seven charophyte species, were documented. The depth limit for submerged vegetation varied between 0.5 m and 5.3 m in the coastal waters. In addition to the vegetation salinity,(More)
A classification system of macroalgae and angiosperms for the inner and outer coastal waters of the German Baltic coast was developed according to the guidelines of the European Water Framework Directive. These guidelines ask for a five step classification scheme (high, good, moderate, poor, bad) of the ecological state based on submerged macrophytes. For(More)
Dinoflagellates readily use diverse inorganic and organic compounds as nitrogen sources, which is advantageous in eutrophied coastal areas exposed to high loads of anthropogenic nutrients, e.g., urea, one of the most abundant organic nitrogen substrates in seawater. Cell-to-cell variability in nutritional physiology can further enhance the diversity of(More)
Algen sind in vielerlei Hinsicht, für den Menschen nutzbar. Während historisch, Algen vorwiegend als Dünge-oder Nahrungsmittel genutzt wurden ist heute eine größere Bandbreite von Nutzungsformen etabliert, oder wird angestrebt. Neben der Nutzung von Inhaltsstoffen (z: B. für Agar und Gelatine, medizinische Inhaltsstoffe) oder als Organismen zur Wasser oder(More)
The parthenogens of Chara canescens (Charophyceae) occupy broader geographical and ecological ranges than their sexual counterparts. Two possible hypotheses explain the ubiquity of parthenogens: the occurrence of one or several parthenogens with wide niches, or of many parthenogens that are restricted to narrow ecological niches. For the purposes of this(More)
Species composition and abundance of macroalgae are classification components for coastal water bodies according to the European Water Framework Directive. The German classification approach integrated the presence and biomass of reference species and opportunistic algae. Along the salinity gradient on the German Baltic coast the distribution and biomass of(More)
The aim of the EU Water Framework Directive is the " good ecological status " of all water bodies in 2015. Reasons and effects of degradation of the coastal waters are well known, but the knowledge about management activities to reverse the actual impact in a reliably short period is less well established. The major problem of coastal waters is their(More)
The function of the cyanobacterial phytochromes Cph1 and Cph2 was investigated. At first, the growth of mutants with an inactivated cph1 or cph2 gene was analysed under different light conditions. The growth of all phytochrome mutants was affected under highlight conditions. However, the cph1-mutant grew slower than the wild type in far-red light, whilst(More)
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