Algal situation reports

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

Algae report number 2, 2024

In the Kattegat the spring bloom seemed to be just around the corner. Diatoms dominated and were composed by species commonly found in the spring bloom. The stations in the Skagerrak, on the other hand, had very few cells but still the bloom species, Skeletonema marinoi was present. The integrated …

 
Type: Report
Author: Marie Johansen
Published: Feb, 2024
Last updated:

Algae report number 1, 2024

The species diversity was high in the Kattegat when considering the season but the total cell numbers were low. In the Skagerrak the diversity was a bit lower. Only Släggö could be sampled in Skagerrak during this cruise. The Plankton community along the Swedish west coast had a traditional winter …

 
Type: Report
Author: Marie Johansen, Maria Karlberg
Published: Jan, 2024
Last updated:

Algae report number 11, 2023

The species diversity and the total cell numbers were low in the Skagerrak but higher in the Kattegat. Overall diatoms dominated at all stations and among the larger cells. Pseudo-nitzschia* was common at most stations. The smaller cells had a dominance of cryptomonads and Emiliania huxleyi. The …

 
Type: Report
Author: Ann-Turi Skjevik, Marie Johansen
Published: Nov, 2023
Last updated:

Algae report number 10, 2023

Only two stations could be sampled along the Swedish west coast due to the hard wind and high waves. Both stations, Släggö in Skagerrak and Anholt in Kattegat, had quite high biodiversity with a dominance of diatoms. Among the diatoms the potentially toxic genus Pseudo-nitzschia* was common. The …

 
Type: Report
Author: Marie Johansen
Published: Nov, 2023
Last updated:

Algae report number 9, 2023

The highest number of species during the September cruise was found at Släggö and the dinoflagellates Scrippsiella-group and Ensiculifera carinata were numerous. The total cell numbers were however low at all of the west coast stations. There were more dinoflagellate species than diatoms in the …

 
Type: Report
Author: Ann-Turi Skjevik, Maria Karlberg
Published: Oct, 2023
Last updated:

Algae report number 8, 2023

The diversity and total cell numbers were generally high at most stations along the Swedish west coast. The only exception being Å17 where both biodiversity and total cell numbers were low.  Dinoflagellates were most commonly found in Skagerrak and diatoms in Kattegat. The integrated …

 
Type: Report
Author: Marie Johansen, Anders Torstensson
Published: Sep, 2023
Last updated:

Algae report number 7, 2023

The diversity was overall low to moderate at most stations along the Swedish west coast. The larger cells were represented by the dinoflagellate genus Tripos together with Proboscia alata at some stations. The smaller cells were represented by the coccolithophore Emiliania huxleyi. Worth mentioning …

 
Type: Report
Author: Marie Johansen
Published: Jul, 2023
Last updated:

Algae report number 6, 2023

The diversity was quite low at all stations along the Swedish west coast. The cell numbers were however normal and almost high at Å17 with a dominance of diatoms. All stations had high cell numbers of Dactyliosolen fragilissimus which is normal for summer. Small cells were common and
Emiliania …

 
Type: Report
Author: Maria Karlberg, Marie Johansen
Published: Jun, 2023
Last updated:

Algae report number 5, 2023

The diversity and total cell numbers were generally low at all stations along the Swedish West coast. Small cells dominated in cell numbers which is common during late spring. At Å17 the coccolithophore Emiliania huxleyi was found in high cell numbers. The samples from the Kattegat still contained …

 
Type: Report
Author: Marie Johansen, Maria Karlberg
Published: Jun, 2023
Last updated:

Algae report number 4, 2023

At Å17 in open Skagerrak, the phytoplankton diversity was high with the potentially fish toxic genus Pseudochattonella*, the diatom Guinardia delicatula and cryptomonadales as the most numerous organisms. At Släggö, the diversity was very low and cryptomonadales and ciliates was found with the …

 
Type: Report
Author: Ann-Turi Skjevik, Maria Karlberg
Published: Apr, 2023
Last updated:
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