Considerable interannual variation exists in the concentration of
chlorophyll ‘a’ recorded during the growing season (Feb – Oct) at each
site (Fig. 8). Chlorophyll ‘a’ concentrations were higher some years at
Loch Ewe (up to 45%) than at Stonehaven. Chlorophyll ‘a’ recorded during
the growing season was less at both sites during 2003, 2004 and
2008