Algal situation reports

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

Algae report number 9, 2021

Species diversity and cell numbers were low at Å17, but high at the other three stations. Å17 had mostly small species of dinoflagellates, such as Gymnodiniales, Heterocapsa rotundata and Karenia mikimotoi*. The other stations had both diatoms and dinoflagellates in various sizes, as well as some …

 
Type: Report
Author: Maria Karlberg, Marie Johansen
Published: Oct, 2021
Last updated:

Algae report number 8, 2021

The species diversity was overall high at most stations sampled along the west coast even if the total cell numbers were not. Different diatoms were found in relatively high cell numbers and for example the genus Pseudo-nitzschia* was common at all stations. Among the dinoflagellates, Karenia …

 
Type: Report
Author: Ann-Turi Skjevik, Marie Johansen
Published: Sep, 2021
Last updated:

Algae report number 7, 2021

The analyses were made on bord the ship Svea during the cruise. Water from integrated sampels or discrete depths were filtrated down to filters with 5μm pore size. The method is most suitebale for identifying larger and more robust cells whereas smaller cells and fragile cells are difficult to …

 
Type: Report
Author: Marie Johansen
Published: Jul 19, 2021
Last updated:

Algae report number 6, 2021

All stations along the west coast had a domination of diatoms to some extent. Most common was Dactyliosolen fragilissimus. The dinoflagellates were not common and mostly represented by the genus Tripos. The coccolithophorid Emiliania huxleyi was found in relatively high numbers at several stations. …

 
Type: Report
Author: Ann-Turi Skjevik, Marie Johansen
Published: Jun, 2021
Last updated:

Algae report number 5, 2021

All stations along the west coast had a domination of diatoms and far most common was Skeletonema marinoi. Among the dinoflagellates the genus Tripos was most common. Chlorophyll concentrations at all stations were normal for this month. Worth mentioning is that Anholt E was visited twice. On both …

 
Type: Report
Author: Ann-Turi Skjevik, Marie Johansen
Published: Jun, 2021
Last updated:

Algae report number 4, 2021

After the spring bloom there were mostly small cells left and a few dinoflagellates and diatoms in both Kattegat and Skagerrak areas. Several species and genera of potentially toxic phytoplankton were present along the whole west coast in April. Chlorophyll concentrations at all stations were …

 
Type: Report
Author: Marie Johansen, Maria Karlberg
Published: May, 2021
Last updated:

Algae report number 3, 2021

The spring bloom was generally over at the Swedish west coast and mostly smaller cells and a few species of dinoflagellates were left. At the southern stations some diatoms were present. The chlorophyll concentrations were low at the Skagerrak stations but below normal at Kattegat stations. In …

 
Type: Report
Author: Marie Johansen, Maria Karlberg
Published: Apr, 2021
Last updated:

Algae report number 2, 2021

Spring bloom was ongoing at Å17 in the open Skagerrak with high cell numbers of the diatom Skeletonema marinoi. Other cell numbers were surprisingly low considering the high chlorophyll concentrations. At Släggö the phytoplankton diversity was still low. Spring bloom was observed even in the …

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

Algae report number 1, 2021

The phytoplankton diversity and total cell numbers were higher than expected for the season except at station Släggö where both total cell numbers and biodiversity were low. Diatoms dominated at all stations. Overall the diatom Pseudo-nitzschia* was common. The ichtyotoxic species Heterosigma …

 
Type: Report
Author: Marie Johansen, Maria Karlberg
Published: Jan, 2021
Last updated:

Algae report number 11, 2020

The phytoplankton diversity and total cell numbers were relatively low as can be expected for the season. The only exception was Å17 that had quite high biodiversity. Diatoms dominated at all stations except at Släggö where dinoflagellates were more abundant. Overall the diatom Pseudo-nitzschia* …

 
Type: Report
Author: Marie Johansen, Maria Karlberg
Published: Dec, 2020
Last updated:
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