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MERC ER02-10
17
6.5. Trial 5 (SIE-08-10): 3-8 June 2010
Presented as means and standard deviations.
Physical Parameters
TSS
mg/l
DOC
mg/l
POC
mg/l
T0 Ambient
17.1 (5.1)
3.76 (0.11)
1.56 (0.18)
T0 Enhanced
55.0 (5.6)
NA
5.39 (0.52)
Enhanced data is the average of 3 time points (2 reps per time point) during the fill time of the ballast tanks.
Ambient water is sampled at the beginning of the trial and before the water is enhanced.
Temp
o
C
Salinity
psu
Dis. Oxygen
mg/l
Turbidity
NTU
pH
T-0 Control
20.48 (0.02)
7.41 (0.00)
4.82 (0.15)
15.96 (1.13)
7.1 (0.1)
T-0 Treated
20.52 (0.01)
6.99 (0.01)
7.89 (0.01)
16.05 (1.14)
7.1 (0.1)
T-F Control
20.13 (0.02)
7.50 (0.00)
3.13 (0.04)
1.32 (0.07)
7.0 (0.1)
T-F Treated
20.27 (0.03)
6.34 (0.01)
7.94 (0.00)
7.22 (0.18)
7.0 (0.1)
Live Organisms > 50
µ
m
T0
#/m
3
TF
#/m
3
Control
175,000 (11,000)
94,500 (8,250)
Treated
221 (59)
8 (3)
*TF Control
*TF Treated
Copepod nauplii
Copepoda
Bivalve larvae
Polychaeta (Spionidae)
Spionidae
Calanoida (
Eurytemora sp
.)
* Up to four top taxa listed in order of abundance.
Live Organisms 10 - 50
µ
m
Vital Stain Results
-
It is important to note that the specific approach used underestimates
the abundances of live organisms in this size class because it has been found that not all live
organisms reliably take up these stains.
T0 #/ml
TF #/ml
Control
1,511 (271)
757 (145)
Treatment
1.7 (1.2)
2.2 (1.5)
Dominant species
Type
Other
Prorocentrum minimum
Dinoflagellate
Thalassiosira sp.
Diatom
chain-forming
Gyrodinium estuarale
Dinoflagellate
Navicula sp.
Diatom
Amphora sp.
Diatom