AN EMILIANIA-HUXLEYI DOMINATED SUBSURFACE BLOOM IN SAMNANGERFJORDEN, WESTERN NORWAY - IMPORTANCE OF HYDROGRAPHY AND NUTRIENTS

Citation
S. Kristiansen et al., AN EMILIANIA-HUXLEYI DOMINATED SUBSURFACE BLOOM IN SAMNANGERFJORDEN, WESTERN NORWAY - IMPORTANCE OF HYDROGRAPHY AND NUTRIENTS, Sarsia, 79(4), 1994, pp. 357-368
Citations number
49
Categorie Soggetti
Marine & Freshwater Biology
Journal title
SarsiaACNP
ISSN journal
00364827
Volume
79
Issue
4
Year of publication
1994
Pages
357 - 368
Database
ISI
SICI code
0036-4827(1994)79:4<357:AEDSBI>2.0.ZU;2-M
Abstract
Samnangerfjorden is a narrow and sheltered fjord with a pronounced low salinity phosphate-depleted surface layer. The coccolithophorid Emili ania huxleyi (Lohmann) Hay et Mohler bloomed in a nitrate-depleted int ermediate layer below the phosphate-depleted surface layer in the inne r part of the fjord in May 1992. Maximum cell density was 7 x 10(6) ce lls l-1, and E. huxleyi accounted for 30% of autotrophic biomass. Both cell density and the calcification rate decreased towards the mouth o f the fjord. Production was P-limited in the inner part of the surface layer, while production in the intermediate layer was light-limited. The growth of E. huxleyi in the surface layer was greatly reduced by t he low salinity.