Algal situation reports

Reports from SMHIs offshore sampling programme, which describe the algal situation in marine waters surrounding Sweden.

Algae report number 11, 2016

A diatom bloom was present at the Skagerrak and Kattegat stations with a dominance of Pseudo-nitzschia spp.* and Pseudosolenia calcar-avis. Chlorophyllfluorescence maxima at Släggö, Anholt E and W Landskrona were mainly caused by the same diatom species. There were quite high cell numbers of …

 
Type: Report
Author: Ann-Turi Skjevik
Published: Dec, 2016
Last updated:

Algae report number 10, 2016

A minor autumn bloom was observed at the Skagerrak and Kattegat stations with high phytoplankton diversity. The flagellate Dictyocha speculum* was found in a so called naked stage, without the silica structure, when the species is potentially harmful. The species was numerous in the Skagerrak and …

 
Type: Report
Author: Ann-Turi Skjevik
Published: Nov, 2016
Last updated:

Algae report number 9, 2016

The phytoplankton diversity was low in the Skagerrak area and at the station Släggö, the chlorophyll a concentrations were below normal for this month. The number of species and the number of cells were higher in the Kattegat than in the Skagerrak, but chlorophyll a concentrations were low. In the …

 
Type: Report
Author: Ann-Turi Skjevik
Published: Oct, 2016
Last updated:

Algae report number 8, 2016

Ciliates, naked dinoflagellates and small species like cryptomonads were common in the phytoplankton samples from the Skagerrak and Kattegat areas. In the Kattegat, diatoms were common. A few potentially toxic species were found in low amounts. The filamentous cyanobacterium Nodularia spumigena* …

 
Type: Report
Author: Ann-Turi Skjevik
Published: Sep, 2016
Last updated:

Algae report number 7, 2016

The diatom Proboscia alata was found in relatively high concentrations at all stations in the Skagerrak. One or two chlorophyll maxima were found at all stations, mainly caused by the dinoflagellate genus Ceratium. At a couple of stations quite high densities of the fish killing species Karenia …

 
Type: Report
Author: Marie Johansen
Published: Jul, 2016
Last updated:

Algae report number 6, 2016

The species diversity among the dinoflagellates was high in the Skagerrak but it was the diatom species Proboscia alata that dominated the phytoplankton community. The Kattegat was dominated by chain forming diatom species. Proboscia alata were among the most abundant all over Kattegat with the …

 
Type: Report
Author: Malin Mohlin
Published: Jun, 2016
Last updated:

Algae report number 5, 2016

Diatom species, often blooming during summer, were rather abundant in the Kattegat and Skagerrak samples. These summer species, as well as the diatom Chaetoceros danicus, also dominated in the samples from the chlorophyll fluorescence maxima. The flagellate Emiliania huxleyi is blooming in the …

 
Type: Report
Author: Ann-Turi Skjevik
Published: Jun, 2016
Last updated:

Algae report number 4, 2016

The phytoplankton activity was rather low in the Kattegat and Skagerrak areas. Diatoms were common in the Kattegat though, with several species observed at variable abundances. The diversity was very low in the Skagerrak area. Chlorophyll fluorescence peaks at Fladen in the Kattegat and at Släggö …

 
Type: Report
Author: Ann-Turi Skjevik
Published: May, 2016
Last updated:

Algae report number 3, 2016

The spring bloom was in its final phase in the Kattegat-Skagerrak areas. The chlorophyll concentrations were high and typical spring bloom diatoms were present, but the nutrients were completely or almost completely exhausted, which is why the bloom was predicted to end soon. Chlorophyll …

 
Type: Report
Author: Ann-Turi Skjevik
Published: Apr, 2016
Last updated:

Algae report number 2, 2016

The phytoplankton diversity and cell concentrations were low in the open Skagerrak area while the beginning of a spring bloom was recorded at the inner station Släggö. The diatom Skeletonema marinoi was found in relatively high concentrations at all stations and this species is often dominating the …

 
Type: Report
Author: Marie Johansen
Published: Mar, 2016
Last updated:

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