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
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.