Algal situation reports

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

Algae report number 12, 2010

The major differences between the Skagerrak and Kattegat areas during the latest cruise were the high cell numbers of the diatoms Pseudosolenia calcar-avis and Pseudo-nitzschia spp. in the Kattegat phytoplankton samples. The species’ were present in the Skagerrak as well but in low cell numbers. The...
Type: Reports, Algal situation report, Oceanography
Author: Ann-Turi Skjevik
Published: November 2010

Algae report number 11, 2010

The phytoplankton species diversity was rather high in the Skagerrak and Kattegat areas although the number of cells was higher in the latter. Diatoms dominated the samples and chlorophyll a concentrations were at average at all stations but somewhat enhanced, within the limits, at Å13 in the Skagerrak...
Type: Reports, Algal situation report, Oceanography
Author: Ann-Turi Skejvik
Published: October 2010

Algae report number 10, 2010

The integrated (0-20 meters) chlorophyll a concentrations were normal for the season at most of the Skagerrak and Kattegat sampling sites. The only exception was Släggö with lower concentrations than normal and Anholt E with higher concentration than normal. The plankton community was relatively low...
Type: Reports, Algal situation report, Oceanography
Author: Marie Johansen
Published: September 2010

Algae report number 9, 2010

A more autumn like phytoplankton community with more dinoflagellates was observed in the Skagerrak. The same phenomenon was not observed in the Kattegat. Only a few species and few cells were found in the Skagerrak waters at the ordinary phytoplankton stations. This was evident from the quite low fluorescence...
Type: Reports, Algal situation report, Oceanography
Author: Marie Johansen
Published: August 2010

Algae report number 8, 2010

The phytoplankton situation in the Skagerrak and Kattegat areas was relatively stable compared to the sampling three weeks earlier. However, there were no chlorophyll fluorescence peaks to speak of. Only at W Landskrona on the edge of the Sound an extra phytoplankton sampling was made at 15 meters because...
Type: Reports, Algal situation report, Oceanography
Author: Ann-Turi Skjevik
Published: July 2010

Algae report number 5, 2010

The integrated (0-20 meters) chlorophyll a concentrations were low at all of the Skagerrak sampling sites, which is normal for the season. The species diversity was quite divers low at the Skagerrak stations but with low abundance of each species. Only a few species of diatoms were found and the phytoplankton...
Type: Reports, Algal situation report, Oceanography
Author: Ann-Turi Skjevik, Marie Johansen
Published: May 2010

Algae report number 4, 2010

During the mid April phytoplankton sampling the species diversity was very low at the Skagerrak stations. Whereas the total cell counts were the highest one month earlier at Å17, the situation was the opposite now with no diatoms. A few ciliates, small flagellates and dinoflagellates were present. The...
Type: Reports, Algal situation report, Oceanography
Author: Ann-Turi Skjevik
Published: April 2010

Algae report number 3, 2010

The phytoplankton samples from the Skagerrak station Å17 had the highest diversity of the plankton stations in the Western Sea in mid-March. Diatoms were the most frequent and the diatom Leptocylindrus danicus the most numerous species. At Släggö and at the Kattegat stations the species diversity was...
Type: Reports, Algal situation report, Oceanography
Author: Ann-Turi Skjevik
Published: March 2010

Algae report number 2, 2010

Extraordinarily high levels of chlorophyll a and high cell numbers were found in the Skagerrak and Kattegat areas in mid January. Fluorescence maxima were found at about 10 meters depth at several stations. The diatoms Skeletonema costatum, Pseudo-nitzschia delicatissima-group and Thalassiosira nordenskioeldii...
Type: Reports, Algal situation report, Oceanography
Author: Marie Johansen
Published: March 2010

Algae report number 1, 2010

Extraordinarily high levels of chlorophyll a and high cell numbers were found in the Skagerrak and Kattegat areas in mid January. The diatoms Skeletonema costatum, Pseudo-nitzschia delicatissima-group and Thalassiosira nordenskioeldii dominated the phytoplankton samples. P. delicatissima-group was found...
Type: Reports, Algal situation report, Oceanography
Author: Ann-Turi Skjevik
Published: January 2010