Publication Date:
2022-04-20
Description:
Along a section through the Baltic from the Belt Sea to the Landsort Deep during May 1962 investigations have been carried out concerning the progress of the spring bloom of the phytoplankton. This was met in its extreme in the Gotland basin with high mean values of chlorophyll and microbiomass up to 3,0 µg Chl/l resp. 179 μg Mb/l in the surface layer. The percentage of detritus increases generally from SW to NE as a consequence of digestion and sedimentation processes and those of primary production. The concentration of the total organic carbon depends as well on the high quantity of allochthonous humic substances which originates from the freshwater inflow as from autochthonous organic substances which have recently been built up by the spring bloom. The quantity of organic carbon ranges between 2020 and 4630 μg C/l. The average values amount at the surface layer to 3680 μg C/l and at the deep layer to 3050 μg C/l. This is caused for a good deal by the high concentration of humic substances in the surface layer.
Type:
Article
,
NonPeerReviewed
Format:
text
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