Field Notes

<--2020-05-23 12:00:00 | 2020-06-12 12:00:00-->
Other sites visited today: Vaira | Tonzi

Tonzi: 2020-06-12 10:30:00 (DOY 164)
Author: Siyan Ma
Others: Joe, Kyoko, Hisashi

Summary: Standard fieldwork, grasses dead, added PAR sensors to Vaira for future swap, midday water potential

When: Date: 6/12/2019 , Day: 164 , Watch Time: 10:30 am .

Where: Tonzi/Vaira Ranch

Who: Siyan, Joe and his family; drove separately

Weather: clear, sunny, extremely windy

Phenology:

Summary

Swapped memory sticks of Licor-7500A. (Joe)
Checked and downloaded phenocam images and met data from PC at three towers. (Joe)
Joe installed new PAR sensors at Vaira
Read dendrometers (tags may be flipped between 2 and 3, between 7 and 8)
Measured soil moisture
Measure groundwater well
Measure midday water potential of oak leaves
Walked to Vaira pond and downloaded data

Vaira_Grass Site

Fence: electronic off.
Downloaded Phenocam images.
Swapped the memory stick of Licor-7500A.
Checked the fans of air temp and relative humidity sensors at Vaira. YES!
Downloaded met data

A screenshot of a cell phone Description automatically generated

Checked levels of Radiation sensors, clear up surfaces.YES!
Checked rain gage, make sure not clogged. YES!
Closed gate. YES!

Tonzi_Tower Site

Fence: electronic off.
swapped the memory stick of Licor-7500A.
download Phenocam images. Yes!
checked the fans of air temp. and relative humidity sensors on the tower and the floor. YES!
Checked rain gage, make sure not clogged. YES!
Screens of met dataloggers:

CR23X3 â€“ floor-Met & soil moisture

CR1000 â€“ tower-Met

Soil CO₂ profile: CR23X5 â€“ soil CO₂ profile

A screenshot of a cell phone Description automatically generated

CO2 profile system (under construction).

8. closed gate. YES!

Toniz_Floor Site

Fence: electronic off.
Swapped the memory stick of Licor-7500A.

A screenshot of a cell phone Description automatically generated

Closed gate. YES!

Field Data

No tank data

Well Depth

Date	Location	Depth (feet)
2020-06-12	VR_well	55.3
2020-06-12	TZ_floor	27
2020-06-12	TZ_tower	31.6
2020-06-12	TZ_road	36
2020-06-12	VR_pond	17.56

mode = both
Moisture Point Probes TZ
Array ( [0] => Tower [1] => Floor_South [2] => Soil_Transect_4 [3] => Soil_Transect_3 [4] => Soil_Transect_2 [5] => Soil_Transect_1 [6] => SoilCO2_West_A [7] => SoilCO2_West_B [8] => SoilCO2_West_C )

Date	DOY	Rep	Depth	Tower	Floor_South	Soil_Transect_4	Soil_Transect_3	Soil_Transect_2	Soil_Transect_1	SoilCO2_West_A	SoilCO2_West_B	SoilCO2_West_C	Avg	Spacial Count	Measurement Count
2020-06-12	164	0	0-15cm	5.3	6.6	2.4	9.4	3.7	0.3	9.7	5.9	4.7
2020-06-12	164	0	15-30cm	11.2	11.8	9	15.8	21.9	5.1	14.8	6	13.6
2020-06-12	164	0	30-45cm	15.6	15.4	11.5	16.5	29.3	14.1	20.1	17	12.6
2020-06-12	164	0	45-60cm	20.2	7.3	12.5	21.6	27.4		17	23.4	20.5
2020-06-12	164	1	0-15cm	5.3	1.5	2.1	8.8	1.9	0.3	8.3	5.3	5
2020-06-12	164	1	15-30cm	12.1	11.2	9	15.5	19.1	4.8	12.4	4.5	13
2020-06-12	164	1	30-45cm	15.6	16.5	10.6	16.5	25.4	14.3	20.1	15.6	12.6
2020-06-12	164	1	45-60cm	19.9	7.3	13	21.9	27.6		17.6	23.4	19.6
2020-06-12	164	Avg	0-15cm	5.3	4.05	2.25	9.1	2.8	0.3	9	5.6	4.85	4.81	9	18
2020-06-12	164	Avg	15-30cm	11.65	11.5	9	15.65	20.5	4.95	13.6	5.25	13.3	11.71	9	18
2020-06-12	164	Avg	30-45cm	15.6	15.95	11.05	16.5	27.35	14.2	20.1	16.3	12.6	16.63	9	18
2020-06-12	164	Avg	45-60cm	20.05	7.3	12.75	21.75	27.5		17.3	23.4	20.05	18.76	8	16

mode = both
Moisture Point Probes VR
Array ( [0] => Flux_Tower [1] => Biomass_Cage )

Date	DOY	Rep	Depth	Flux_Tower	Biomass_Cage	Avg	Spacial Count	Measurement Count
2020-06-12	164	0	0-15cm	1.2	0.6
2020-06-12	164	0	15-30cm	9.3	5.7
2020-06-12	164	0	30-45cm	4.5	13.4
2020-06-12	164	0	45-60cm	14.8	15.6
2020-06-12	164	1	0-15cm	1.5	0.6
2020-06-12	164	1	15-30cm	9.3	5.7
2020-06-12	164	1	30-45cm	3.7	13.1
2020-06-12	164	1	45-60cm	13.9	15.3
2020-06-12	164	2	0-15cm	1.2	0.3
2020-06-12	164	2	15-30cm	9.7	6
2020-06-12	164	2	30-45cm	3.9	14
2020-06-12	164	2	45-60cm	14.2	15
2020-06-12	164	3	0-15cm	1.2	1.2
2020-06-12	164	3	15-30cm	9	5.7
2020-06-12	164	3	30-45cm	4.5	14
2020-06-12	164	3	45-60cm	13.6	15.6
2020-06-12	164	Avg	0-15cm	1.28	0.68	0.98	2	8
2020-06-12	164	Avg	15-30cm	9.33	5.78	7.56	2	8
2020-06-12	164	Avg	30-45cm	4.15	13.63	8.89	2	8
2020-06-12	164	Avg	45-60cm	14.13	15.38	14.76	2	8

No TZ grass heigth found

No VR grass heigth found

Tree DBH

Date	Tag#	Reading (mm)
2020-06-12	1	25.2
2020-06-12	102	16.3
2020-06-12	2	23.0
2020-06-12	245	12.6
2020-06-12	3	15.4
2020-06-12	4	9.0
2020-06-12	6	16.0
2020-06-12	7	19.2
2020-06-12	72	9.4
2020-06-12	79	20.6

Water Potential - mode: raw

Time	Species	Tree	readings (bar)
2020-06-12 13:13:00	OAK	102	-23	-17	-27
2020-06-12 13:13:00	OAK	35	-35	-34	-36
2020-06-12 13:13:00	OAK	92	-31	-27	-26
2020-06-12 13:49:00	PINE	OLD	-1	-5	-4
2020-06-12 13:49:00	PINE	YNG	-1	-5	-7