Datasets:
patrickbdevaney
/
mia9

Dataset card Data Studio Files
xet
 Community
1
text
stringlengths
0
6.44k
1 2 3 4 5 6 7 8 9 10 11 12
1.5
2
2.5
3
3.5
4
4.5
5
5.5
6
6.5 TOC
1 2 3 4 5 6 7 8 9 10 11 12
CS MBS NCI
NCO NNB SCI
SCM SCO SNB
48
Dissolved Oxygen (DO)
Bay wide mean and median DO concentrations are 6.45 and 6.43 mg/l indicating
oxygenated waters with only 0.8% and 1.6% of the total values being below the 4 mg
per liter DO threshold for surface and bottom waters respectively (Fig 3.18). Maxima DO
concentrations occur in January-February and minimum in August across the bay, in an
opposite pattern as that of temperature (Fig 3.18) with one-month lag. State of Florida
Rule 62-302.530, for Class III marine waters, specifies that DO ―shall never be less than
4.0 mg l-1
‖. Application of this rule is complicated because there are locations in South
Florida where coastal waters have natural DO concentrations below 4 mg/l (Boyer and
Briceño 2007). Exceedances of this norm are usually below 1% for surface waters
except for MBS (1.65%) and SCI (1.72%). Bottom waters are slightly less oxygenated,
with % exceedances ranging from 1.11% (CS) to 3.14% (MBS) (Table 3.1).
Figure 3.18: Seasonal variability of Dissolved Oxygen (DO) in Biscayne Bay
Table 3.1: Percent DO exceedances (below 4 mg/l DO) in surface and bottom waters
0
1
2
3
4
5
6
7
8
9
10
DO_S
1 2 3 4 5 6 7 8 9 10 11 12
4.5
5
5.5
6
6.5
7
7.5
8
8.5
DO_S
1 2 3 4 5 6 7 8 9 10 11 12
4
5
6
7
8
9
10
DO_S
1 2 3 4 5 6 7 8 9 10 11 12
4.5
5
5.5
6
6.5
7
7.5
8
8.5
9 DO_S
1 2 3 4 5 6 7 8 9 10 11 12
4.5
5
5.5
6
6.5
7
7.5
8
8.5
DO_S
1 2 3 4 5 6 7 8 9 10 11 12
4
5
6
7
8
9
10
DO_S
1 2 3 4 5 6 7 8 9 10 11 12
4
4.5
5
5.5