Winter and spring phytoplankton composition and production in a shallow eutrophic Baltic lagoon

Phytoplankton diversity and photosynthetic acclimation along a longitudinal transect through a shallow estuary in summer

“…The morphological differentiation of taxonomic units was performed with the highest resolution possible (Anagnostidis & Komárek 1988 for filamentous cyanobacteria; Pankow 1990). All identified species fell into the group of common species in the Darss-Zingst estuary (Wasmund 1994, Schumann et al 2005. The occurrence of a new prochlorophyte species (Geiß et al 2003) was irrelevant for morphological differentiations.…”

“…The study on phytoplankton diversity of the Darss-Zingst estuary was unusual because of the high spatial resolution of sampling sites in a short timeframe. The percentage of cyanobacterial biomass was about twice as much as in winter and spring (Schumann et al 2005). The key processes that potentially mediate an increasing number of limiting resources and correspondingly increasing diversity in the more productive basins of the Darss-Zingst estuary in summer still need to be conclusively resolved.…”

Mixotrophy, allelopathy and the population dynamics of phagotrophic algae (cryptophytes) in the Darss Zingst Bodden estuary, southern Baltic

“…The most prominent taxonomic groups in the DZBC (Chlorophyceae, Cyanophyceae), typically amount to 90% of the total phytoplankton biovolume. These algal groups dominate during most of the year, but in winter there is a substantial increase in the biomass of mixotrophic cryptophytes (Rhodomonas lacustris, R. baltica and R. salina) (up to 26-fold compared to the annual mean; Schumann et al 2005) and in cold winters this group is dominant. Strikingly, cryptophytes can reach extremely high abundances (blooms) during periods of persistent ice cover (Wasmund 1994;see Fig.…”

Protistan diversity does peak in the horohalinicum of the Baltic Sea: Reply to Ptacnik et al. (2011)

“…The gap in January and February as well as the limited number of samples in December correspond to the period of ice cover, when the productivity of the system is low (e.g. Schumann et al 2005, Schubert & Wasmund 2005. Although some flagellates can bloom under the ice, species diversity in winter is lower than during the vegetation season (Schumann et al 2005).…”

“…Schumann et al 2005, Schubert & Wasmund 2005. Although some flagellates can bloom under the ice, species diversity in winter is lower than during the vegetation season (Schumann et al 2005). Throughout the rest of the annual cycle, the database we used is balanced, taking into account that Fig.…”