Saguaro 2 (S2)

Description of Site: This site is in Divider Reef and is where the riverine zone starts to take on lacustrine properties. It is most representative of the transitional zone.
GPS Coordinates: 330 34.69 N   1110 29 56 W

9/29/99
Physico-chemical Parameters
 
Time Depth (m) Temp (C) pH SpCond Salinity (ppt) D.O. (% sat) D.O. (mg/l) Turbidity (NTU's)
1420:59 -0.2 21.09 7.89 1289 0.7 106.3 9.45 4.5
1420:40 -1.6 20.78 7.9 1289 0.7 107.7 9.63 2.3
1420:11 -3.4 20.39 7.85 1288 0.7 103.4 9.32 1.7
1419:45 -5.2 20.14 7.74 1289 0.7 94.9 8.59 2.2
1419:08 -9.0 20.08 7.67 1289 0.7 92.0 8.34 2.5
1418:36 -12.7 20.02 7.65 1289 0.7 92.5 8.39 2.2

 
Depth (m) Ammonia (mg/l) Nitrate (mg/l) TKN (mg/l) Ortho P (mg/l) Total P (mg/l) Sulfate (mg/l) Chloride (mg/l)
0 0.2 0 2.0 0 0.028 58 320
-12.7 0.17 0 0.76 0 0.022 57 310

 
Depth (m) Dissolved Fe (mg/l) Dissolved Mn (mg/l) Total Fe (mg/l) Total Mn (mg/l) Silica (mg/l) TSS Chl a (mg/m3) Pheophytin a (mg/m3)
0 0 0 0.03 0 15.5 0 2.69 2.01
-12.7 0.014 0 0.078 0.015 15.1 0 2.69 1.93

Secchi Depth: 2.41 meters

Phytoplankton
-9.4 m
Division Genus Units/ml
Chlorophyta Crucigenia 160
Chlorophyta Coccomonas 400
Chlorophyta Golenkiniopsis 80
Chrysophtya Diatomella 80
Euglenophyta Trachelomonas 320

Phytoplankton
0 meters
Division Genus Units /mL
Cyanophyta Spirulina 400
Chlorophyta Polyblepharides 160
Chrysophyta Synedra 320
Chlorophyta Thoracomonas 240
Chlorophtya Cosmarium 1520
Chrysophtya Diatoma 80
Chlorophtya Coccomonas 720
Chlorophtya Crucigenia 640
Chrysophtya Nitzchia 160
Chrysophyta Dinobryon 80
Cyanophyta Anabainopsis 80

 Results from 8/25/99