White Creek CO2 Data

These sites were visited on 7/13/04 and 8/18/04. Graphs are from 8/18/04. Measurements from both days agree unless noted.

AREA 1: UTM = 516025 4931072

Near "Five Sister's Springs"

1:

Plant Species: Dichanthelium 50%, Nonthermal Agrostis scabra 10%, Pseudognaphalium 20%, bare ground 20%

Soil Temperature = 32C -- pH = 5.0

 

2:

 

Plant Species: Juncus spp. 100%

Soil Temperature = 34C -- pH = 10.0 **

 

3:

Plant Species: Dichanthelium 30%, Euphorbia serpyllifolia 30%, Pseudognaphalium 20%, bare ground 20%

Soil Temperature = 40C -- pH 5.0

 

4:

Plant Species: Dichanthelium 50%, bare ground 50%

Soil Temperature = 30C -- pH 5.0

 

5:

Plant Species: Mimulus guttatus 20%, bare ground 80%

Soil Temperature = 40C -- pH 5.0

 

6: AMBIENT CO2 LEVELS

 

7:

 

Plant Species: Dichanthelium 80%, Nonthermal Agrostis scabra 10%, Mimulus guttatus 10%

Soil Temperature = 44C -- pH 3.5

 

WHITE CREEK: AREA 2

UTM = 516466 4930847

1:

Plant Species: Dichanthelium 40%, Nonthermal Agrostis scabra 10%, Mimulus guttatus 10%, Racomitrium canescens 40%

Soil Temperature = 27C -- pH 5.5

 

2:

Plant Species: Dichanthelium 80%, Mimulus guttatus 10%, bare ground 10%

Soil Temperature = 30C

 

3: Ambient CO2 on 8/18/04

 

4:

Plant Species: Achillea millefolium 50%, Mentha spp. 20%, Racomitrium canescens 10%, bare ground 10%

Soil Temperature = 23C -- pH = 5.0

Original LoggerPro CO2 data file

 

Thermal Area near Narcissus Geyser

UTM = 516041 4932482

 

1:

Plant Species: Dichanthelium 50%, Rumex 10%, Nonthermal Agrostis scabra 10%, Racomitrium 30%

Soil Temperature = 43C -- pH = 4.5

 

2:

Plant Species: Dichanthelium 50%, Bromus tectorum 50%

Soil Temperature = 35C -- pH = 4.5