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

8/25/99
Physico-chemical Parameters
 
Time Depth (m) Temp (C) pH SpCond Salinity (ppt) D.O. (% sat) D.O. (mg/l) Turbidity (NTU's)
0845:49 0 28.71 8.8 1496 0.8 90.5 6.75 0.9
0845:30 2.1 28.13 8.47 1476 0.8 75 5.65 0.1
0844:53 3.9 27.21 8.12 1445 0.8 53.8 4.12 0.5
0844:27 4 27.09 8.07 1439 0.8 50.6 3.88 1.3
0844:08 5.8 26.26 8 1413 0.7 44.8 3.49 1.4
0843:44 7.5 25.04 7.94 1377 0.7 40.3 3.21 1.5
0843:21 9.4 24.45 7.94 1360 0.7 42.3 3.4 1.6
0842:42 11.3 24.04 7.97 1349 0.7 45.1 3.66 1.6
0842:03 13.1 23.55 7.94 1335 0.7 41.9 3.43 1.6

 
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 ND ND <1 ND 0.032 56 307
11 0.011 ND <1 ND 0.085 54 300

 
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 0.031 0.02 0.05 0.02 16.8 2 4.052 3.72
11 0.058 0.02 0.14 0.06 14.3 5 5.182 4.501

Secchi Depth: 2.41 meters

Phytoplankton
0.5 m
Division Genus Units/ml
Cyanophyta Anabaenopsis 3120
Cyanophyta Aphanocapsa 720
Cyanophyta Gloeocapsa 80
Cyanophyta Lyngbya 640
Cyanophyta Merismopedia 1280
Cyanophyta Spirulina 6240
Chlorophyta Carteria 320
Chlorophyta Chlamydomonas 720
Chlorophyta Chlorella 720
Chlorophyta Crucigenia 80
Chlorophyta Polytoma 2480
Chlorophyta Schroederia 240
Chrysophyta Diatoma 160
Chrysophyta Dinobryon 320
Chrysophyta Fragilaria 240
Chrysophyta Navicula 240
Chrysophyta Nitzchia 2320
Chrysophyta Synedra 400
Chrysophyta Tabellaria 80
Euglenophyta Lepocinclus 80
Pyrrophyta Massartia 240

Results from 7/21/99