Field Notes

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Vaira: 2020-04-01 10:15:00 (DOY 92)
Author: Joe Verfaillie
Others: Hisashi, Kyoko

Summary: Fieldwork with help from the family, wetter but not wet, trees slowly putting on leaves, pond still not full, condensation in BF3

Vaira
2020-04-01

Hisashi, Kyoko and I arrived at 10:15. It was partly cloudy, warm in the sun cool in the shade. The trees are still slowly putting on leave. There has been a bit more rain but the road is largely dry with just some small puddles. The waterhole is full but the pond level was only 19.58ft still not full. The grass and especially the broadleaves are getting taller.

All seemed surprisingly normal when the rest of the world is anything but normal â€“ third week of COVID-19 lock down in the Bay Area.

I collected the data and did spectral measurements. Kyoko and Hisashi did soil moisture, veg height and took clip plots.
The 7500 read: 415.8ppm CO2, 386.7mmol/m3 H2O, 99.6kPa, 13.0C, 99.5SS

I replaced the cable to the FD chamber with a longer one removing the ugly splice we left wrapped in the plastic bag last time. I collected the FD data. There was some grass sprouting inside the FD Chamber collar. I moved the FD unit, pulled the grass and put it back.

There was condensation inside the BF3 â€“ bring some desiccant packs next time.

The well level was 56.1ft

The solar controller box door was open but everything inside looked okay â€“ I closed it.

Veg Height (cm): Tape measure from ground to top of plant
21, 10, 9, 12, 10, 18, 12, 11, 8, 9, avg = 12, stdev = 4.22

Field Data

No tank data

Well Depth

Date	Location	Depth (feet)
2020-04-01	VR_well	56.1
2020-04-01	TZ_road	37.6
2020-04-01	TZ_floor	29.2
2020-04-01	TZ_tower	33.7

mode = both
Moisture Point Probes TZ
Array ( [0] => Tower_1 [1] => Floor_South_1 [2] => Floor_West_1 [3] => Soil_Transect_4_1 [4] => Soil_Transect_3_1 [5] => Soil_Transect_2_1 [6] => Soil_Transect_1_1 [7] => SoilCO2_West_A_1 [8] => SoilCO2_West_B_1 [9] => SoilCO2_West_C_1 [10] => Tower_2 [11] => Floor_South_2 [12] => Floor_West_2 [13] => Soil_Transect_4_2 [14] => Soil_Transect_3_2 [15] => Soil_Transect_2_2 [16] => Soil_Transect_1_2 [17] => SoilCO2_West_A_2 [18] => SoilCO2_West_B_2 [19] => SoilCO2_West_C_2 [20] => Tower_3 [21] => Floor_South_3 [22] => Floor_West_3 [23] => Soil_Transect_4_3 [24] => Soil_Transect_3_3 [25] => Soil_Transect_2_3 [26] => Soil_Transect_1_3 [27] => SoilCO2_West_A_3 [28] => SoilCO2_West_B_3 [29] => SoilCO2_West_C_3 [30] => Tower_4 [31] => Floor_South_4 [32] => Floor_West_4 [33] => Soil_Transect_4_4 [34] => Soil_Transect_3_4 [35] => Soil_Transect_2_4 [36] => Soil_Transect_1_4 [37] => SoilCO2_West_A_4 [38] => SoilCO2_West_B_4 [39] => SoilCO2_West_C_4 )

0000

Date	DOY	Rep	Depth	Tower_1	Floor_South_1	Floor_West_1	Soil_Transect_4_1	Soil_Transect_3_1	Soil_Transect_2_1	Soil_Transect_1_1	SoilCO2_West_A_1	SoilCO2_West_B_1	SoilCO2_West_C_1	Tower_2	Floor_South_2	Floor_West_2	Soil_Transect_4_2	Soil_Transect_3_2	Soil_Transect_2_2	Soil_Transect_1_2	SoilCO2_West_A_2	SoilCO2_West_B_2	SoilCO2_West_C_2	Tower_3	Floor_South_3	Floor_West_3	Soil_Transect_4_3	Soil_Transect_3_3	Soil_Transect_2_3	Soil_Transect_1_3	SoilCO2_West_A_3	SoilCO2_West_B_3	SoilCO2_West_C_3	Tower_4	Floor_South_4	Floor_West_4	Soil_Transect_4_4	Soil_Transect_3_4	Soil_Transect_2_4	Soil_Transect_1_4	SoilCO2_West_A_4	SoilCO2_West_B_4	SoilCO2_West_C_4	Spacial Count
2020-04-01	92	0	nan	32	20.3	25.8	20	21.2	25.6	22	32.5	30.5	26.1	31.6	34.4	32.6	28	32.3	31.6	19.4	27.4	20.3	31	32.4	39.9	36	30.1	32.4	34.1	32.4	35.4	34.9	37.7	40.8	48.6	42.3	33.7	43.4	48.8	33.4	44.5	49.7	48.3
2020-04-01	92	1	nan		20.6	25.8	20.3	15.9	24.7	21.4	33.2	32.9	25.6		34.4	32.3	28.3	31	31.3	19.7	26.8	19.4	30.1	39.6	40.2	35.7	31.3	32.4	34.9	32.7	35.4	34.9	37.4	41.1	48	42	34.5	43.4	48.3	33.4	44.8	49.4	46.6
2020-04-01	92	Avg	0-15cm																																									0
2020-04-01	92	Avg	15-30cm																																									0
2020-04-01	92	Avg	30-45cm																																									0
2020-04-01	92	Avg	45-60cm																																									0

mode = both
Moisture Point Probes VR
Array ( [0] => Flux_Tower_1 [1] => Flux_Tower_2 [2] => Biomass_Cage_2 [3] => Flux_Tower_3 [4] => Biomass_Cage_3 [5] => Flux_Tower_4 [6] => Biomass_Cage_4 [7] => Biomass_Cage_1 )

0000

Date	DOY	Rep	Depth	Flux_Tower_1	Flux_Tower_2	Biomass_Cage_2	Flux_Tower_3	Biomass_Cage_3	Flux_Tower_4	Biomass_Cage_4	Biomass_Cage_1	Spacial Count
2020-04-01	92	0	nan	15.9	30.4	19.1	16.5	34.3	27.9	31.9
2020-04-01	92	1	nan	15.3	30.1	17.6	16.2	32.1	28.5	30.5	16.5
2020-04-01	92	Avg	0-15cm									0
2020-04-01	92	Avg	15-30cm									0
2020-04-01	92	Avg	30-45cm									0
2020-04-01	92	Avg	45-60cm									0