Algal situation reports

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

Algae report number 8, 2022

The phytoplankton diversity and total cell counts were low in the Kattegat and Skagerrak areas, except at Släggö where the diversity was a bit higher. The toxic species Dinophysis acuta* was found in relatively high cell numbers at Släggö. The diatom Proboscia alata was common at all stations along …

 
Type: Report
Author: Marie Johansen, Maria Karlberg
Published: Sep, 2022
Last updated:

Algae report number 7, 2022

The analyses were made onboard the ship R/V Svea during the cruise. Water from integrated samples or discrete depths were filtrated down to filters with 5μm pore size. The method is more suitable for identifying larger and more robust cells whereas smaller cells or fragile cells are …

 
Type: Report
Author: Marie Johansen
Published: Jul, 2022
Last updated:

Algae report number 6, 2022

The phytoplankton diversity was high whilst the total cell counts were low in the Kattegat and Skagerrak areas, except at Å17 where the diversity was low as well as the cell numbers. The coccolithophorid Emiliania huxleyi was numerous and Dactyliosolen fragilissimus was the most abundant diatom …

 
Type: Report
Author: Ann-Turi Skjevik
Published: Jun, 2022
Last updated:

Algae report number 5, 2022

In the Skagerrak and Kattegat areas both cell abundance and diversity were low and small cells dominated the samples. Different ciliates and naked dinoflagellates were most common together with cryptomonads. At Å17 some cells of the coccolithophore Emiliania huxleyi were present. The integrated …

 
Type: Report
Author: Marie Johansen
Published: Jun, 2022
Last updated:

Algae report number 4, 2022

In the Skagerrak, both cell abundance and diversity were low at Å17, the diversity was however higher at Släggö. At Släggö the toxin producing dinoflagellate Dinophysis norvegica* was present in quite high cell numbers. In Kattegat, at the first sampling occasion at Anholt E the water was …

 
Type: Report
Author: Maria Karlberg
Published: May, 2022
Last updated:

Algae report number 3, 2022

Both stations in the Skagerrak had high total cell abundances and high biodiversity. Different species of diatoms dominated the coastal phytoplankton community, of which the common chain forming diatom Skeletonema marinoi was the most abundant. The off-shore station was, however, dominated by the …

 
Type: Report
Author: Maria Karlberg, Anders Torstensson
Published: Apr, 2022
Last updated:

Algae report number 2, 2022

Both stations in the Skagerrak had low total cell abundance and low biodiversity. No indication of an upcoming spring bloom was found. Small cells dominated and different cells of cryptomonads were most commonly found. The diatom Skeletonema marinoi, commonly dominating the spring bloom was found …

 
Type: Report
Author: Anders Torstensson, Marie johansen
Published: Mar, 2022
Last updated:

Algae report number 1, 2022

Due to a case of covid-19 onboard the R/V Svea, the cruise had to stop at Bornholm in the Southern Baltic and turn back to the home port, Lysekil. All Kattegat and Skagerrak stations were sampled. The phytoplankton species diversity was very low with low total cell numbers at the Skagerrak …

 
Type: Report
Author: Ann-Turi Skjevik
Published: Jan, 2022
Last updated:

Algae report number 11, 2021

The species diversity was high at most stations along the west coast. The total cell numbers varied but quite many stations had low numbers. Diatoms dominated in the samples but the order Dictyocales including the species Octactis speculum was common. The coccolithophore Emiliania huxleyi was found …

 
Type: Report
Author: Marie Johansen
Published: Nov, 2021
Last updated:

Algae report number 10, 2021

The species diversity was high at three of four stations int the Kattegat and Skagerrak areas and the highest at the Kattegat stations. Diatoms dominated the samples, but the individual cell numbers were relatively low or moderate. The integrated chlorophyll concentrations were within normal for …

 
Type: Report
Author: Ann-Turi Skjevik, Maria Karlberg
Published: Nov, 2021
Last updated:
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