Streamside Vernal Pool on Keystone College Campus

 

March 6, 2006; 15:00 hrs; 4 inches of wet snow on top of ice

Ice Thickness = 18 cm

Parameters measured by YSI sonde.

 

                                    Upstream (1st) Site                                                  Downstream (2nd) Site

 

Bottom

Under Ice

 

Bottom

Under Ice

Dissolved Oxygen (DO) (mg/L)

  8.05

4.69

 

    9.33

    4.72

Conductivity (mS/cm)

  0.208

0.184

 

    0.197

    0.198

Turbidity (NTU)

10.70

4.69

 

240.0*

114.5*

Temperature (oC)

  2.3

0.9

 

    0.25

    0.29

Depth (m)

  0.23

0

 

    0.12

    0

*stirred up by auger

 

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Monday, March 20, 2006

We erected the drift fencing and measured the size of the pool.

___________________________________________________________________________________

Thursday, March 23, 2006-Data taken by Limnology class.

            Upstream (1st) Site--redrilled the same hole                                                 

 

Under Ice

1 foot depth

Dissolved Oxygen (DO) (mg/L)

  12.3 (87%)

12.6 (89%)

Conductivity (mS/cm)

  0.07

0.08

Turbidity (NTU)

10.8

19.0

Temperature (oC)

  0.83

2.0

pH

  6.2

6.25

The sonde was left in place and will record data at 1 hour intervals.