Carotenoid pigments as tracers of cyanobacterial blooms in recent and post-glacial sediments of the Baltic Sea

Citation
El. Poutanen et K. Nikkila, Carotenoid pigments as tracers of cyanobacterial blooms in recent and post-glacial sediments of the Baltic Sea, AMBIO, 30(4-5), 2001, pp. 179-183
Citations number
28
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Environment/Ecology,"Environmental Engineering & Energy
Journal title
AMBIO
ISSN journal
0044-7447 → ACNP
Volume
30
Issue
4-5
Year of publication
2001
Pages
179 - 183
Database
ISI
SICI code
0044-7447(200108)30:4-5<179:CPATOC>2.0.ZU;2-J
Abstract
The distributions of carotenoid pigments were studied in recent and postgla cial sediments collected in the Gotland Basin, in the northern part of the Baltic proper, and in the eastern Gulf of Finland in May 1999. The aim was to provide a systematic, historical review of the occurrence and intensity of cyanobacterial blooms in the Baltic Sea in recent centuries. The presenc e of pigments was determined using high-pressure liquid chromatography (HPL C), with attention mainly focused on pigments considered as markers for cya nobacteria. The pigment concentrations in sediments from the 3 sampling loc ations were found to differ markedly. In general, concentrations were highe st in sediments from the Gotland Basin, and lowest in sediments from the ea stern Gulf of Finland. In all 3 cores echinenone was the dominant carotenoi d in the topmost layer of the sediment (0-1 cm). In the deeper sections of the cores, myxoxanthophyll and zeaxanthin dominated. To our knowledge, this is first time that myxoxanthophyll and echinenone have been detected in Ba ltic Sea sediments from the early Litorina stage. The decrease in the pigme nt content with sediment depth coincides with a decrease in carbon content, and also fits in with general historical records of the occurrence and int ensity of cyanobacterial blooms in the Baltic Sea, which show that cyanobac terial blooms were seldom recorded before World War II.