Table 2. Comparison of heme b, chlorophyll a and dissolved iron values observed in the Gullmar Fjord (this study) with other studies from the Atlantic Ocean.

Study area	Heme b (pmol L-1)	Chlorophyll a (nmol L-1)	Dissolved iron (nmol L-1)
Iceland Basin	1.1±0.7[12]	1.2±0.8[12]	<0.03–0.22[44]
Scotia Sea	5.1±4.8[12]	1.9±1.7[12]	<0.03–0.6[45]
Tropical North Atlantic	2.3±1.7[12]	0.25±0.13[12]	<0.1–0.37[46]
Celtic Sea	3.8±1.7[6]	0.5±0.3[6]	0.8–2.1[47]
Gullmar Fjord (this study)	66±45	1.2±0.6	4–40[36, 37]

Heme b and chl a are expressed as averages ± standard deviation. Dissolved iron data are expressed as a range.