Field Notes

<--2020-05-05 12:15:00 | 2020-05-23 12:00:00-->
Other sites visited today: Vaira | Tonzi

Tonzi: 2020-05-23 10:30:00 (DOY 144)
Author: Siyan Ma
Others: Joe, Ray, Sunny

Summary: Standard fieldwork, grasses almost dead at VR, first midday water potential, clip plots

When: Date: 5/23/2019 , Day: 143 , Watch Time: 11:00 am .

Where: Tonzi/Vaira Ranch

Who: Siyan, Joe

Weather: clear, sunny

Phenology: Annual grasses are senescent, >90% at Vaira; ~ 50% at Tonzi.

Summary

Swapped memory sticks of Licor-7500A. (Joe)
Checked and downloaded phenocam images and met data from PC at three towers. (Joe)
Read dendrometers
Measured soil moisture
Measure groundwater well and download GlobalWater data
Measure midday water potential of oak leaves
Collect grass samples for biomass
Spectrum of Vaira grassland (PC or the device didnâ€™t work correctly.)

Vaira_Grass Site

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

A screenshot of a cell phone Description automatically generated

Checked levels of Radiation sensors, clear up surfaces. (Joe)
Checked rain gage, make sure not clogged. (Joe)
Closed gate and turn on electronic fence. (Joe)

Tonzi_Tower Site

Fence: electronic on.
swapped the memory stick of Licor-7500A. (Joe)

A screenshot of a cell phone Description automatically generated

download Phenocam images. (Joe)
checked the fans of air temp. and relative humidity sensors on the tower and the floor. (Joe)
Checked rain gage, make sure not clogged. (Joe)
Met and CO2 profile system (Joe)

A screenshot of a cell phone Description automatically generated

closed gate and turn on electronic fence.

Toniz_Floor Site

Swapped the memory stick of Licor-7500A. (Joe)

A screenshot of a cell phone Description automatically generated

Closed gate and turn on electronic fence.

Field Data

No tank data

Well Depth

Date	Location	Depth (feet)
2020-05-23	VR_well	54.7
2020-05-23	TZ_floor	26.9
2020-05-23	TZ_tower	31
2020-05-23	TZ_road	35.8

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

Date	DOY	Rep	Depth	Tower	Floor_South	Floor_West	Soil_Transect_4	Soil_Transect_3	Soil_Transect_2	Soil_Transect_1	SoilCO2_West_A	SoilCO2_West_C	Avg	Spacial Count	Measurement Count
2020-05-23	144	0	0-15cm	10.3	1.8	11.1	6.8	14.4	9.4	3	16.2	7.4
2020-05-23	144	0	15-30cm	12.7	13.6	12.1	10	15.5	15.2	5.4	9.7	15.5
2020-05-23	144	0	30-45cm	17.6	21.2	19	12.9	17.9	20.7	17.3	18.7	19
2020-05-23	144	0	45-60cm	24.8	16.2	24.5	15	28.5	34.5	17.6	23.6	25.9
2020-05-23	144	1	0-15cm	9.7	1.8	9.1	7.4	14.7	10.3	2.4	16.5	8.6
2020-05-23	144	1	15-30cm	12.1	13.3	12.1	10.3	15.8	15.5	5.4	10	14.5
2020-05-23	144	1	30-45cm	16.8	20.9	16.2	12.6	18.2	20.9	17.3	19.3	14.8
2020-05-23	144	1	45-60cm	23.6	16.2	28.2	14	28.2	34.5	17.3	22.5	16.2
2020-05-23	144	Avg	0-15cm	10	1.8	10.1	7.1	14.55	9.85	2.7	16.35	8	8.94	9	18
2020-05-23	144	Avg	15-30cm	12.4	13.45	12.1	10.15	15.65	15.35	5.4	9.85	15	12.15	9	18
2020-05-23	144	Avg	30-45cm	17.2	21.05	17.6	12.75	18.05	20.8	17.3	19	16.9	17.85	9	18
2020-05-23	144	Avg	45-60cm	24.2	16.2	26.35	14.5	28.35	34.5	17.45	23.05	21.05	22.85	9	18

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
2020-05-23	144	0	0-15cm	5	3.3
2020-05-23	144	0	15-30cm	11.5	11.1
2020-05-23	144	0	30-45cm	4.2	15.9
2020-05-23	144	0	45-60cm	15.9	13.6
2020-05-23	144	1	0-15cm	5.9	3
2020-05-23	144	1	15-30cm	11.2	13.6
2020-05-23	144	1	30-45cm	5	16.5
2020-05-23	144	1	45-60cm	15.6	13.6
2020-05-23	144	Avg	0-15cm	5.45	3.15	4.3	2	4
2020-05-23	144	Avg	15-30cm	11.35	12.35	11.85	2	4
2020-05-23	144	Avg	30-45cm	4.6	16.2	10.4	2	4
2020-05-23	144	Avg	45-60cm	15.75	13.6	14.68	2	4

No TZ grass heigth found

No VR grass heigth found

Tree DBH

Date	Tag#	Reading (mm)
2020-05-23	1	25.2
2020-05-23	102	16.2
2020-05-23	2	23.8
2020-05-23	245	12.8
2020-05-23	3	15.5
2020-05-23	4	8.9
2020-05-23	5	15.9
2020-05-23	6	5.0
2020-05-23	7	18.2
2020-05-23	72	9.3
2020-05-23	79	20.9

Water Potential - mode: raw

Time	Species	Tree	readings (bar)
2020-05-23 12:52:00	OAK	102	-13	-7	-11
2020-05-23 12:52:00	OAK	35	-10	-15	-17
2020-05-23 12:52:00	OAK	92	-28	-26	-20
2020-05-23 13:21:00	PINE	OLD	-10	-24	-2
2020-05-23 13:21:00	PINE	YNG	-0.5	-0.2	-2.5