Algal situation reports

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

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:

Algae report number 10, 2020

The phytoplankton diversity was over all high at all stations along the Swedish west coast. Diatoms dominated in numbers at all stations. Especially the diatom Leptocylindrus danicus was common at all stations. At Å17, the outer most station in the Skagerrak, a few cells of species more commonly …

 
Type: Report
Author: Ann-Turi Skjevik, Marie Johansen
Published: Nov, 2020
Last updated:

Algae report number 9, 2020

The phytoplankton diversity varied along the Swedish west coast. At Anholt E and Släggö it was moderate whereas Å17 and N14 Falkenberg had few cells and mainly small ones. Relatively high cell abundance of the coccolithophore Emiliania huxleyi was found at all stations. The integrated chlorophyll …

 
Type: Report
Author: Marie Johansen
Published: Sep, 2020
Last updated:

Algae report number 8, 2020

The phytoplankton diversity was higher in the Kattegat than in the Skagerrak. In the Kattegat there was an obvious impact of the Baltic blooms considering the presence of cyanobacteria surface accumulations that had drifted out through the Sound. There were relatively high cell numbers of the …

 
Type: Report
Author: Ann-Turi Skjevik
Published: Sep, 2020
Last updated:

Algae report number 7, 2020

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 suitable for identifying larger and more robust cells whereas smaller cells and fragile cells are difficult to …

 
Type: Report
Author: Marie Johansen
Published: Jul, 2020
Last updated:

Algae report number 6, 2020

Both the species diversity and total cell numbers were higher at Släggö (coastal station) than at Å17 (outer sea) at the time of sampling. Diatoms dominated at both stations and predominantly Guinardia flaccida was found. This species also dominated in the fluorescence peaks that were sampled. The …

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