Table 6.
Diatom and non-Alexandrium sp. densities (cells mL−1), and size fractionated chlorophyll a (μg L−1) from field experiments conducted during the spring of 2011.
| Total Dinoflagellates (cells mL−1) |
Total Diatoms (cells mL−1) |
Total Chlorophyll a
(μg L−1) |
<20 μm Chlorophyll a
(μg L−1) |
>20 μm Chlorophyll a
(μg L−1) |
|
|---|---|---|---|---|---|
| 13-May | |||||
| 390μatm | 33 (7) | 72390 (3649) | 69 (31) | 23 (4) | 46 (27) |
| 750μatm | 20 (3) | 43540 (7192)* | 87 (25) | 27 (4) | 60 (25) |
| 1500μatm | 30 (9) | 57477 (6791)* | 113 (3) | 31 (8) | 82 (5) |
| 22-May | |||||
| 390μatm | 29 (3) | 161800 (2050) | 67 (15) | 46 (10) | 21 (5) |
| 750μatm | 29 (6) | 110030 (16989)* | 58 (6) | 47 (3) | 11 (4)* |
| 1500μatm | 34 (3) | 168833 (5618) | 47 (4) | 38 (6) | 9 (2)* |
| 27-May | |||||
| 390μatm | 171 (13) | 2110 (786) | 5 (1) | 3 (1) | 2 (0) |
| 750μatm | 154 (26) | 2626 (669) | 11 (10) | 5 (5) | 6 (5) |
| 1500μatm | 157 (18) | 14067 (1916)* | 14 (8) | 6 (4) | 7 (5) |
Values are mean (SD). Asterisks indicate significant differences (p<0.05) between treatments and the control (~390μatm).