Checked automated chambers. No issues seen with 1-6, though reports of issues from remote data. 5-4 was missing a clamp head. Found it and replaced it. May need a new one as a long-term fix.

Disconnected the incoming and outgoing sampling lines from the Licor and ICOS in the trailer until we can clear the chambers and get them operational.

G5-6, G1-3, G1-5 all overextended. Turned down compressor outgoing pressure to just over 52psi. Will shut down system today prior to snowstorm and incoming polar vortex.

Found chamber G5-6 (control) had a hyperextended lid on the east side. Put back in place. Going back out to see if I can adjust it with a screwdriver to prevent it from recurring.

Process BCSE deep cores - Sidney, Alex

Process BCSE deep cores - Sidney, Alex

Process BCSE deep cores - Sidney

G6 ANPP sampling and species composition transects. Three NS transects per plot, main only. Each transect ~2m east of the station flags and numbered 1-3 based on the station number. Stop about every 1m to identify and measure first intercepted plant. ANPP: Station 1 only: 3mS, 0.5mW to NE corner of 1.52x0.66m frame to avoid microplot. All other stations: 3mS, 1.5mW to NE corner of 1.52x0.66m frame. MISGI bagged separately, weeds (if any) sorted to species. - Alyssa, Gloria, Helen, Emily

Drone flight for albedo on BCSE and LTAR. Sunny, light breeze. White tarp measure after each. While flying the LTAR, flight lasted unusually long, when it was returning for next battery at 18%, The drone lost complete power about one foot above the home position. Hit the ground and disturbed the mount for the front camera and the ribbon cord that runs from gimbel to the drone system. Repaired.

Process BCSE deep cores - Sidney

Process BCSE deep cores - Sidney

Process BCSE deep cores - Sidney

Process BCSE deep cores - Sidney

Removed flags and chambers from Martha’s study on the north baitcrop area BCSE.

Additionally, removed all shelters on the Lux Arbor marginal land site. Three reps show high stress. Also, deer pellets in three of the four sheltered areas. ALOT! Only deployed one set of RH/T sensors in rep four this year.

Process BCSE deep cores - Sidney

Start processing BCSE 2022 deep soil cores - Sidney

Lake City Bulk Density cores at all plots 0-4” and 5-9” depths. Shelters moved into winter positions and screws deployed. Checked all loggers G5r2 121 SN 43047, G5r1 127 SN43040, weather SN37075, G5r3 125 SN43043. Checked rain gauge. Some labels were missing, written on core or cap. Possibly sampled a few on an earlier trip with Ashim. Removed RH/T sensors around noon.

Sampled bulk density at all Escanaba plots 0-4” and 5-9” depths, 2” wide slide hammer sampler AMS, Inc. Checked all loggers G5r1 116 SN42921, G10r3 119 SN43039, G5r2 120 SN43044, 38603 weather station. Removed all shelters by noon. Removed RH/T sensors. Checked rain gage

Sampled Rhinelander all plots for Bulk Density. 0-4” and 5-9” depth cores (2” wide). Also sampled bulk soil at 22 plots, both depths. Soil was rocky so we used a drain spade shove for this portion. Filled in all holes. Checked data loggers and recorded SNs. SN 38838 weather station, G5r1 126 SN43048, G5r3 124 SN43041, G5r2 118 SN43042. Checked rain gage. Filled in all holes.

Sampled all plots for bulk density. 0-4” and 5-9”. One inch spacing is due to the non-sampled portion of first core. That one inch is discarded. Checked all loggers and recorded SNs. G5r4 128 SN43046, G5r3 129 SN43045, G5r2 122 SN43049, SN 38839 weather station.

Started BCSE G4,5,7,9,10 ANPP clipping (finished through G4R2). Station 1: 4mS, 1mW to NE corner of 2 x 0.5m frame, to avoid subplot. Station 2,3: 4mS, 2mW to NE corner of 2 x 0.5m frame. Wasn’t sorted, bagged as UNSRT. -

Set fallen HOBO sensor on t-post at Lux Arbor MLE switchgrass site (block 3?). Sensor remained about 1m off ground while collecting previous data (unsure when sensor fell over sideways). Now is upright, approximately 20-30 cm above switchgrass. Inside shelter sensor remains solid.

Reestablished 8 plots in Martha/Ilyas study with excess N. Kevin hoed and raked each plot to loosen soil. Added Urea 46% after Martha weighed out. Control (0N) and three very high rates of N (400,800,1200gN/m2) in an attempt to reach the threshold of n2O emissions..

Included an image of the addition prior to raking in.

On 8/2 Martha weighed out 184,365, and 552g of urea. I checked her calculation on 8/3 and found she did not add the proper amount to the plots. She will adjust today. ADD: 8/7 kept new additions as is. Started sampling 8/8.

2023 BCSE G8 ANPP/LFLIT 0.5 x .95m wooden frame North trap… 0mS, 3mE of station 3 to NW corner of frame oriented with short ends on the north/south South trap… 2mS, 2mE of station 1 to NW corner of frame oriented with short ends on the east/west Collect newly fallen poplar leaves as LFLIT (if any).
Clip all biomass rooted inside frame and bag labeled UNSRT. Leave the frame in place and clip screen in place to collect leaf litter as it falls from the poplar trees.

2023 BCSE G8 species composition transects Three NS transects per plot, main only. Each transect ~2m east of the station flags and numbered 1-3 based on the station number. Shift slightly to go down center of two tree rows. Record which tree rows you are between (row 1 is on the west side of the plot). Stop about every 1m to identify and measure first intercepted plant in the understory, not poplar trees.

• Alyssa, Evan, Helen, Rick, Lauren

7/26 there was a problem with G5-2 lid solenoid on the trailer system. Found the signal wire to the switch was not connected, but also no lids were firing in close mode. Found a ground wire off as well. Reconnected the G5-2 lid wire and should all be working properly. DW checked the compressor as well.