text stringlengths 0 6.44k |
|---|
SCM SCO |
38 |
Highest salinity occurs across the bay in May and lowest salinity occurs in |
September to November (Fig 3.7). There is a significant drop in salinity between May |
and June, reaching up to 9 PSU (NNB and SCI) at the beginning of the wet season. |
Non-parametric Mann-Whitney tests indicate that salinities among the defined WQ |
clusters are significantly different (p<0.05) except for NCI and SCM, and NCO and CS |
with non-significant statistical differences at p=0.12 and p=0.51 respectively. |
The salinity patterns derived from monthly data shown here are clearly an |
oversimplification when compared to high frequency data (15 min sampling rate) as |
those reported by the BNP for NCI, SCI and SCM (BNP 2008; Bellmund et al. 2009). In |
fact, salinity in the mangrove areas is substantially different from the salinity further east |
in Biscayne Bay, displaying frequent hypersalinity conditions and responding more to |
groundwater variability than to local canal flow. A consequence of salinity variability is |
that extension of estuarine conditions (salinity < 20 PSU) in the bay is rather variable. |
According to Bellmund et al. (2009) average estuarine area for the wet season (2004- |
2008 period) was 2,714 hectares, but in the dry season it contracted to only 454 |
hectares. FIU’s data indicate that estuarine conditions have occurred since June 1996 |
in only 14% and 7% of the records for MBS and SCI, respectively. These figures clearly |
indicate how little Biscayne Bay resembles a true estuary. |
Figure 3.7: Seasonal variability of Salinity in Biscayne Bay |
0 |
5 |
10 |
15 |
20 |
25 |
30 |
35 |
40 |
45 |
SAL_S |
1 2 3 4 5 6 7 8 9 10 11 12 |
24 |
26 |
28 |
30 |
32 |
34 |
36 |
38 |
40 |
SAL_S |
1 2 3 4 5 6 7 8 9 10 11 12 |
22 |
24 |
26 |
28 |
30 |
32 |
34 |
36 |
38 |
40 |
42 |
SAL_S |
1 2 3 4 5 6 7 8 9 10 11 12 |
24 |
26 |
28 |
30 |
32 |
34 |
36 |
38 |
40 |
SAL_S |
1 2 3 4 5 6 7 8 9 10 11 12 |
20 |
22 |
24 |
26 |
28 |
30 |
32 |
34 |
36 |
38 |
SAL_S |
1 2 3 4 5 6 7 8 9 10 11 12 |
15 |
17.5 |
20 |
22.5 |
25 |
27.5 |
30 |
32.5 |
35 |
37.5 |
40 |
42.5 SAL_S |
1 2 3 4 5 6 7 8 9 10 11 12 |
20 |
22 |
24 |
26 |
28 |
30 |
32 |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.