Field Notes

<--2020-03-12 10:00:00 | 2020-04-18 13:00:00-->
Other sites visited today: Tonzi

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] => 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_B [9] => 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_B	SoilCO2_West_C	Avg	Spacial Count	Measurement Count
2020-04-01	92	0	0-15cm	32	20.3	25.8	20	21.2	25.6	22	32.5	30.5	26.1
2020-04-01	92	0	15-30cm	31.6	34.4	32.6	28	32.3	31.6	19.4	27.4	20.3	31
2020-04-01	92	0	30-45cm	32.4	39.9	36	30.1	32.4	34.1	32.4	35.4	34.9	37.7
2020-04-01	92	0	45-60cm	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	0-15cm		20.6	25.8	20.3	15.9	24.7	21.4	33.2	32.9	25.6
2020-04-01	92	1	15-30cm		34.4	32.3	28.3	31	31.3	19.7	26.8	19.4	30.1
2020-04-01	92	1	30-45cm	39.6	40.2	35.7	31.3	32.4	34.9	32.7	35.4	34.9	37.4
2020-04-01	92	1	45-60cm	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	32	20.45	25.8	20.15	18.55	25.15	21.7	32.85	31.7	25.85	25.42	10	19
2020-04-01	92	Avg	15-30cm	31.6	34.4	32.45	28.15	31.65	31.45	19.55	27.1	19.85	30.55	28.68	10	19
2020-04-01	92	Avg	30-45cm	36	40.05	35.85	30.7	32.4	34.5	32.55	35.4	34.9	37.55	34.99	10	20
2020-04-01	92	Avg	45-60cm	40.95	48.3	42.15	34.1	43.4	48.55	33.4	44.65	49.55	47.45	43.25	10	20

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
2020-04-01	92	0	0-15cm	15.9
2020-04-01	92	0	15-30cm	30.4	19.1
2020-04-01	92	0	30-45cm	16.5	34.3
2020-04-01	92	0	45-60cm	27.9	31.9
2020-04-01	92	1	0-15cm	15.3	16.5
2020-04-01	92	1	15-30cm	30.1	17.6
2020-04-01	92	1	30-45cm	16.2	32.1
2020-04-01	92	1	45-60cm	28.5	30.5
2020-04-01	92	Avg	0-15cm	15.6	16.5	16.05	2	3
2020-04-01	92	Avg	15-30cm	30.25	18.35	24.3	2	4
2020-04-01	92	Avg	30-45cm	16.35	33.2	24.78	2	4
2020-04-01	92	Avg	45-60cm	28.2	31.2	29.7	2	4