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"Permanent" Monitoring Station's Layout

      A 100ml sample is taken for nutrient analysis on a Lachat (Ammonia, Nitrates, Phosphate). A 2L sample is collected to run through the Wetlabs AC-9 and collect other parameters. On the same day as the samples are collected, they are filtered for chlorophylls (50 mls x2), which are frozen and later analyzed by fluorescence. On the following day the samples are run thru the AC-9, and then filtered for color (C-DOM = 30 mls x2), particle absorption (PA = 200 mls x2), and turbidity (TSS = 500mls x2). The PA and C-DOM are frozen until later analysis. TSS is determined by dry weight (60ºC to constant weight), and ashed dry weight (500ºC x 4hrs).
      In addition we collect light profiles (PAR) using a 4Pi Li-Cor sensor at 0.5m depth intervals to the bottom. We also collect a simultaneous water-quality profile using YSI-6600, which records temperature, salinity, D.O., pH, turbidity (NTU), and chlorophyll fluorescence (ug/L chl).

Table 1: GPS coordinates of monthly sampling stations in North River, NC.

Station        Lat.             Long.          Description
 MM1    34 41 28.2    76 39 51.3    near Beaufort Inlet
 MM2    34 41 29.4    76 38 01.4    Marker SW of MM
 MM3    34 40 46.9    76 36 47.4    Marker SE of MM
 MM4    34 42 14.4    76 35 50.5    Nr Marker "56"
 MM5    34 43 15.1    76 35 41.4    E entrance of Thoroughfare
 MM6    34 43 37.4    76 37 18.9    Off Howland Rock dock (Permanent #2)
 MM7    34 44 37.3    76 36 42.9    100m NW of shallow water marker
 MM8    34 45 03.6    76 35 47.9    500m NE of shallow water marker, towards Ward Ck
 MM9    34 47 20.1    76 36 35.2    E Of Hwy 70 Bridge

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