Field Notes

<--2017-08-25 10:48:00 | 2017-09-14 09:30:00-->
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Tonzi: 2017-09-07 12:00:00 (DOY 250)
Author: Daphne Szutu
Others: Dennis, Siyan, Joe

Summary: Regular data collection, many brown trees, updated tower met CR1000 program, brought new pressure bomb compressed gas cylinder

2017-09-07
Tonzi

We arrived at 12:00. It was warm and sunny, with some clouds. Some of the trees were completely brown.

Dennis collected soil moisture measurements. Siyan did her usual field work and took water potential (pressure bomb) measurements. Joe brought a full compressed gas cylinder ("Breathing Air") for pressure bomb measurements. Siyan also reset a number of the dendrometers that were maxing out. Joe fixed the broken dendrometer on tree #102 the current circumference is 80.2cm. The dendrometer on Tree C6 is broken - its current circumference is 38.7cm.

On the tower, I downloaded tower met, tower GHG, and phenocam CF card data. I also collected floor GHG and soil CO2 data. Joe collected the 2 tables from the floor met datalogger. I downloaded the zcam data to the black field laptop.

I updated the program for tower met to v20170907 to fix some radiation data that were reading noise ~0. I updated the DifChan parameter for the difPAR and LED instructions, and the numbers look more reasonable now. difPAR and totPAR were also reversed, so I changed their order in the program. PAR channels had some NAN gaps; I tightened the screws and moved PARin to channel 25.

Joe set up a tree NDVI out field-stop sensor sn 943203017 near the floor met data logger using cable ties and wired and programmed the sensor to the floor met data logger.

We left at 14:30.

Field Data

No tank data

Well Depth

Date	Location	Depth (feet)
2017-09-07	TZ_floor	23.8
2017-09-07	TZ_road	33.2
2017-09-07	TZ_tower	28.7
2017-09-07	VR_pond	14.3

mode = both
Moisture Point Probes TZ
Array ( [0] => Tower_1 [1] => Floor_South_1 [2] => Floor_East_1 [3] => Floor_West_1 [4] => Soil_Transect_4_1 [5] => Soil_Transect_2_1 [6] => SoilCO2_West_A_1 [7] => SoilCO2_West_B_1 [8] => SoilCO2_West_C_1 [9] => Tower_2 [10] => Floor_South_2 [11] => Floor_East_2 [12] => Floor_West_2 [13] => Soil_Transect_4_2 [14] => Soil_Transect_2_2 [15] => SoilCO2_West_A_2 [16] => SoilCO2_West_B_2 [17] => SoilCO2_West_C_2 [18] => Tower_3 [19] => Floor_South_3 [20] => Floor_East_3 [21] => Floor_West_3 [22] => Soil_Transect_4_3 [23] => Soil_Transect_2_3 [24] => SoilCO2_West_A_3 [25] => SoilCO2_West_B_3 [26] => SoilCO2_West_C_3 [27] => Tower_4 [28] => Floor_South_4 [29] => Floor_East_4 [30] => Floor_West_4 [31] => Soil_Transect_4_4 [32] => Soil_Transect_2_4 [33] => SoilCO2_West_A_4 [34] => SoilCO2_West_B_4 [35] => SoilCO2_West_C_4 )

0000

Date	DOY	Rep	Depth	Tower_1	Floor_South_1	Floor_East_1	Floor_West_1	Soil_Transect_4_1	Soil_Transect_2_1	SoilCO2_West_A_1	SoilCO2_West_B_1	SoilCO2_West_C_1	Tower_2	Floor_South_2	Floor_East_2	Floor_West_2	Soil_Transect_4_2	Soil_Transect_2_2	SoilCO2_West_A_2	SoilCO2_West_B_2	SoilCO2_West_C_2	Tower_3	Floor_South_3	Floor_East_3	Floor_West_3	Soil_Transect_4_3	Soil_Transect_2_3	SoilCO2_West_A_3	SoilCO2_West_B_3	SoilCO2_West_C_3	Tower_4	Floor_South_4	Floor_East_4	Floor_West_4	Soil_Transect_4_4	Soil_Transect_2_4	SoilCO2_West_A_4	SoilCO2_West_B_4	SoilCO2_West_C_4	Spacial Count
2017-09-07	250	0	nan	2.1	3.7	6.2	10.4	1.3	3.6	4.2	5.6	2.9	13.3	12.1	9.7	7.5	8.4	12.4	9	0.3	11.8	15.4	8.4	15.1	12.9	9.2	16.5	17.8	16.2	14.3	17	3	15.3	20.2	11	28.5	17.9	14.5	25.9
2017-09-07	250	1	nan	2.4	3.7	6.2	3.9	1	3.3	4.2	5.6	4	13.6	12.7	10.6	3.2	8.7	12.1	7.8	0.6	12.4	15.6	8.5	14	13.7	9.2	16.8	17.8	15.9	14	16.5	3	14.8	17.6	11.3	28.8	17.8	1512.4	25.6
2017-09-07	250	2	nan	2.7	4.8	5.3	10.3	1.6	4.2	3.6	5.3	1	13.3	12.1	11.8	2.9	8.4	12.4	8.4	1.2	11.8	15.1	7.8	14	12.9	9.5	16.8	17.3	15.9	14.5	17	3.3	14.8	18.5	11.3	29.1	17.3	15	25.6
2017-09-07	250	Avg	0-15cm																																					0
2017-09-07	250	Avg	15-30cm																																					0
2017-09-07	250	Avg	30-45cm																																					0
2017-09-07	250	Avg	45-60cm																																					0

mode = both
Moisture Point Probes VR
Array ( [0] => Solar_Panels_1 [1] => Flux_Tower_1 [2] => Gate_1 [3] => Biomass_Cage_1 [4] => Solar_Panels_2 [5] => Flux_Tower_2 [6] => Gate_2 [7] => Biomass_Cage_2 [8] => Solar_Panels_3 [9] => Flux_Tower_3 [10] => Gate_3 [11] => Biomass_Cage_3 [12] => Solar_Panels_4 [13] => Flux_Tower_4 [14] => Gate_4 [15] => Biomass_Cage_4 )

0000

Date	DOY	Rep	Depth	Solar_Panels_1	Flux_Tower_1	Gate_1	Biomass_Cage_1	Solar_Panels_2	Flux_Tower_2	Gate_2	Biomass_Cage_2	Solar_Panels_3	Flux_Tower_3	Gate_3	Biomass_Cage_3	Solar_Panels_4	Flux_Tower_4	Gate_4	Biomass_Cage_4	Spacial Count
2017-09-07	250	0	nan	3	1	1.8	3	10	6.3	5.1	3.5	15.1	3.9	9.8	15.4	29.4	15	12.8	18.8
2017-09-07	250	1	nan		0.4	2.1	1		6.6	4.8	3.9		3.9	9.8	15.1		14.8	12.2	18.5
2017-09-07	250	2	nan		7	1.5	1		5.4	5.7	3.5		5	9.8	15.1		14.8	11.9	18.2
2017-09-07	250	Avg	0-15cm																	0
2017-09-07	250	Avg	15-30cm																	0
2017-09-07	250	Avg	30-45cm																	0
2017-09-07	250	Avg	45-60cm																	0

No TZ grass heigth found

No VR grass heigth found

Tree DBH

Date	Tag#	Reading (mm)
2017-09-07	1	25.6
2017-09-07	1	6.1
2017-09-07	102	5.2
2017-09-07	2	20.5
2017-09-07	245	23.9
2017-09-07	245	5.0
2017-09-07	3	23.5
2017-09-07	3	5.5
2017-09-07	4	6.3
2017-09-07	4	22.0
2017-09-07	5	22.1
2017-09-07	5	2.6
2017-09-07	7	17.7
2017-09-07	72	23.6
2017-09-07	72	5.2
2017-09-07	79	22.4
2017-09-07	79	5.3
2017-09-07	8	21.8

Water Potential - mode: raw

Time	Species	Tree	readings (bar)
2017-09-07 13:14:00	OAK	102	-27	-52	-47
2017-09-07 13:14:00	OAK	35	-47	-48	-40
2017-09-07 13:14:00	OAK	92	-28	-42	-48
2017-09-07 13:44:00	PINE	OLD	-2	-16	-21
2017-09-07 13:44:00	PINE	YNG	-10	-2	-1

No TZ Grass Biomass data found

No TZ OakLeaves Biomass data found

No TZ PineNeedles Biomass data found

2 photos found

20170907TZ_north.JPG ( 2017-09-07 12:37:40 ) Full size: 1920x1440
View of Tonzi oak savanna, looking north from the tower, with mostly green oak/pine trees and bright yellow grass underneath

20170907TZ_west.JPG ( 2017-09-07 12:37:26 ) Full size: 1920x1440
View of Tonzi oak savanna, looking west from the tower. About a quarter of the visible oak/pine trees have brown canopies. The undercanopy is all bright yellow grass.