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CHLA Zcusum
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generate sudden DIN increases, as shown for MBS after the 2004-2005 hurricane
seasons. A systematic break from above or average DIN concentrations to below
average levels occurred at the end of year 1999. Stations displaying an overall
increasing trend over the period of record (SCI, SCM, NCI, NCO and NNB) also show
low values extending until 2002 at SCI, SCM, NCI, NCO and NNB.
Figure 3.24: Dissolved Inorganic Nitrogen Zcusum charts for water quality segments in
Biscayne Bay
Salinity
Salinity displays long-term increasing trends over the POC (Fig 3.25). In general,
salinities well below average characterized all segments until the end of 1998. From
1999 to the end of 2003, salinity either increased to slightly below average values
(MBS, CS, SCM, SCO) or developed a short cycle of increase-decline (NCI, NCO, SNB,