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Ph.D.

Several spring bloom diatom species were present in the phytoplankton samples from the Skagerrak-Kattegat area, reminding us of the past bloom. The diatom Rhizosolenia hebetata was common at most stations and Skeletonema marinoi was common at one of the Anholt E visits. Cell counts were mostly low. …

The Baltic Sea is optically a multi-componental water and has exceedingly high levels of colored dissolved organic matter (CDOM, also referred as yellow matter, gilvin or gelbstoff). CDOM is a complex mixture of chemical bonds originating from the decay of photosynthetically produced organic …

The Baltic Sea is optically a multi-componental water and has exceedingly high levels of colored dissolved organic matter (CDOM, also referred as yellow matter, gilvin or gelbstoff). CDOM is a complex mixture of chemical bonds originating from the decay of photosynthetically produced organic …

Surface water temperatures were somewhat below normal in the whole investigated area. All nutrients showed concentrations typical for the season in the Skagerrak and Kattegat, while they in the Baltic Proper were above normal. The bottom water in the Arkona Basin was well oxygenated. Oxygen …

Remnants of the spring bloom were found in the surface water at both stations in the Skagerrak. The chlorophyll fluorescence maxima indicated that the bloom was sinking down considering they were found at approximately 15 meters. Diatoms dominated in the surface water and Skeletonema marinoi and …

Surface water temperatures were below normal in all investigated areas. Nutrients in the surface layer were almost completely consumed in the Skagerrak and Kattegat and the spring bloom was in progress. In the Baltic Proper winter conditions still prevailed and nutrient concentrations were above …

This work presents trends in the phytoplankton community. Data on the occurrence of both chlorophyll a (hereafter Chl a) as well as phytoplankton community structure and biovolume are presented. Water transparency in terms of Secchi depth is also presented, as a secondary effect of phytoplankton …

The cell concentrations were low at all stations in the Baltic Sea and at the Swedish west coast except at Å17 in the Skagerrak. The species diversity was relatively high at the Swedish west coast and low in the Baltic Sea. The integrated (0-20 m) chlorophyll a concentrations were within normal at …