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MERC ER02-10
12
Live Organisms > 50
µ
m
T0
#/m
3
TF
#/m
3
Control
50,500 (10,000)
35,666 (2,350)
Treated
9 (7)
9 (3.5)
*TF Control
*TF Treated
Copepod nauplii
Bivalve larvae
Polychaeta (Spionidae)
Copepoda
Calanoida (
Acartia sp, Eurytemora sp
.)
Turbellaria
Harpacticoida
* 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
1,088 (194)
137 (8)
Treatment
1.7 (1.2)
0 (0)
Dominant species
Type
Other
Heterocapsa rotundatum
Dinoflagellate
Gymnodinium sp.
Dinoflagellate
Thalassiosira gravida
Diatom
chain-forming
Navicula sp.
Diatom
Active Chlorophyll-a
- Chlorophyll is used as ancillary data and as a general
presence/absence indicator of viable photosynthetic organisms.
T0 µg/l
TF µg/l
RG µg/l
Control
3.07 (0.09)
0.91 (0.02)
0.12 (0.09)
Treated
0.24 (0.17)
0.13 (0.02)
0.00 (0.00)
RG = after re-growth assay; MDL = 0.56 µg/l
Live Microbes
cfu = colony forming units
E. coli
T0
cfu/100ml
TF
cfu/100ml
Control
0 (0)
2.2 (1.5)
Treated
0 (0)
0 (0)
Enterococci
T0
MPN/100ml
TF
MPN/100ml
Control
16.64 (4.08)
70.42 (29.77)
Treated
5.8 (1.9)
34.68 (8.59)
MPN = most probably number estimate determined by the Idexx Enterolert kit.