| Bloom | Date | Seawater Source (f=filtered) |
Nutrients added (f /2) | Algal Growth | Lowest pCO2 (ppm) |
Highest CO2 t.v. (cm hr-1) | Distinct Enzyme effect? | Surface film at end? | Temperature and stirring range (T / C, stir / rpm) |
Other Parameters measured (in addition to CO2 fluxes) |
| Dunaliella 1 (green alga) |
December 1995 | MAFF ship (unfiltered) |
N, P | Intense | 12 | 12.5 | Yes | Yes | T 15 ±
1.5 stir 13.5 ± 1.5 |
SF6 / Ox tv. |
| Dunaliella 2 | Jan / Feb 1996 | Lowestoft laboratory supply (f) |
N, P, |
Weak | 130 | 5.8 | Yes | No | T 15 ±
2 stir 13.5 ± 2 |
SF6, Ox, tv, Alk, Chl,
effect of CA inhibitor |
| Phaeodactylum (diatom) | Feb / March 1996 | Lowestoft laboratory supply (f) | N, P, Si | Intense | 7 | 19.5 | Possibly at lowest pCO2 | Yes | T 15 ±
2 stir 13 ± 2 |
SF6 / Ox tv
Alk / TCO2 / pH (only at end) ,Chl (x2) |
| Amphidinium (dinoflagellate) |
April 1996 |
Lowestoft laboratory supply + boat off Yarmouth (f) | N, P | Intense | 13 | 9.5 | No | No | T 15.0 ±
1 stir 13.3 ± 0.5 (except 22 April) |
Alk / TCO2 / pH (x6), Chl (x3)
effect of CA inhibitor |
North Sea spring bloom (mostly Phaeocystis) |
May / June 1996 | Yarmouth boat (in tank after <3 hrs -unfiltered) |
none except 2nd week of 3rd sample (N,P) | Low compared to cultures | 160 (tank) 240 (sea) |
4.6 | Possibly | No | T 15.0 ±
1 (tank) T 9 => 15 (sea) stir 13.3 ± 0.5 |
Alk / pH / TCO2 (x8), Chl (x4)
SF6 tv. |
| Dunaliella 3 | August 1996 |
Yarmouth boat (f) |
N, P | Very weak | 90 | 4.8 | No | No | T 15.0 ±
0.8 stir 13.0 ± 0.4 |
Alk / TCO2 / pH (x2) |
| Dunaliella 4 | Sept / Oct 1996 | Yarmouth boat +30% artificial seawater (f) | N, P +trace metals & vitamins |
Intense | 8 | 13.0 | Yes | Yes | T 15.0 ±
0.4 stir 13.0 ± 0.3 |
Alk / pH (x5), TCO2 (x11) Chl (x3)
SF6 tv. |
| Skeletonema (Diatom) |
August 1997 |
Lowestoft laboratory supply (f) | N, P, Si +trace metals & vitamins |
Medium | 64 | 4.6 | No | NoN No | T 15.0 ±
0.4 stir 13.0 ± 0.3 |
Alk / TCO2/ pH (x2), Chl (x3) |
| Emiliana Huxleyi (Coccolithophorid) |
Sept /Oct 1997 | Lowestoft laboratory supply (f) | N, P (f / 20) +trace metals & vitamins |
Medium | 250 (Ehux bloom) 8 (film at end) |
6 (Ehux bloom) 15 (film at end) |
Yes | Yes | T 15.0 ±
0.4 stir 13.0 ± 0.3 |
Alk / pH / TCO2 (x5), Chl (x4) |
More details about the sources of seawater, and the components of f /2 medium are given in sections 5.2.1 and 5.2.3.
Surface films are discussed in section 8.5. For justification of the "distinct enzyme effect" see section 8.4.