Table 2. Phytoplankton species composition and cell abundances for each transect in the Northern Adriatic Sea.

Species	Cell abundances (103 cells L−1)
	March 2002				March 2004				March 2005				March 2006
	1	2	3	Total	1	2	3	Total	1	2	3	Total	1	2	3	Total
Bacillariophyceae	—	6118	—	6118	27	139	498	115	305	673	4377	1221	208	514	13194	1737
Chaetoceros affinis	—	—	—	—	0	0	0	0	46	17	9	25	0	0	147	16
Chaetoceros calcitrans	—	—	—	—	10	2	9	7	1	34	0	15	0	0	0	0
Chaetoceros compressus	—	—	—	—	0	0	0	0	0	14	6	7	0	392	0	144
Chaetoceros spp.	—	—	—	—	2	2	13	3	88	172	84	209	27	0	0	6
Leptocylindrus danicus	—	—	—	—	0	0	0	0	30	35	30	32	0	0	0	0
Navicula spp.	—	—	—	—	0	7	0	2	3	4	1	3	21	1	0	5
Pseudonitzschia delicatissima	—	—	—	—	0	0	0	0	1	2	0	1	0	0	98	11
Skeletonema marinoi	—	4065	—	4065	3	16	414	47	105	339	4219	1087	1	108	12889	1504
Stephanodiscus spp.	—	—	—	—	0	0	0	0	0	0	0	0	125	0	0	28
Thalassiosira spp.	—	—	—	—	0	3	17	3	2	28	4	14	0	0	0	0
Unidentified	—	—	—	—	3	51	26	24	0	0	2	1	0	0	0	0
Dinophyceae	—	39	—	39	20	13	20	17	16	15	9	14	1	20	50	19
Alexandrium minutum	—	—	—	—	0	0	0	0	0	0	0	0	0	0	49	5
Prorocentrum minimum	—	—	—	—	3	3	0	3	2	2	2	2	0	19	0	13
Unidentified	—	—	—	—	10	8	9	10	8	7	5	7	0	0	0	0
Prymnesiophyceae	—	14	—	14	158	125	35	157	26	15	13	19	1	80	98	65
Emiliania huxleyi	—	—	—	—	156	124	35	156	25	15	10	17	1	79	98	64
Cryptophyceae	—	40	—	40	100	95	99	111	40	89	49	63	1	1	343	39
Prasinophyceae	—	0	—	0	8	4	4	6	0	0	0	0	0	0	0	0
Other flagellates	—	1081	—	1081	377	539	242	441	317	417	125	319	256	318	2401	536
Total	—	7294	—	7294	689	920	886	849	704	1210	4573	1636	466	853	15989	2231

Species composition and mean of phytoplankton cell abundances (10³ cells L⁻¹) per transect in March 2002, 2004, 2005 and 2006 in the Northern Adriatic Sea. Species are shown only if their mean per transect were once higher than 5×10³ cells L⁻¹. Values are the total of all counted cells for the group, including the species not presented here. In March 2002, species were identified at the class level, except for the diatom S. marinoi.