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Date | Author | Entry | File | Actions |
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2025-03-28 | vanderws |
BCSE gas chamber prep - |
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2025-03-27 | vanderws |
LTER 2 gas sampling (first full set for 2025), prairie strips had to be sampled in the afternoon - Slater, Brian, Trajana, Olivia LTER Hydrosense; Pull LTAR ASP1, ASP5, ASP6 frames for fertilizer and mowing - Alyssa |
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2025-03-26 | vanderws |
LTAR 2 gas sampling - Slater, Brian, Trajana LTAR Hydrosense - Alyssa Sampled soil from new LTAR R5 plots, twelve 0-25cm cores per plot pooled, six from the north half and six from the south half, approx. evenly space across the plot EW; when a row crop was present alternated taking a core in the row and between rows - Stacey |
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2025-03-25 | vanderws |
Prep LTAR and LTER gas chambers, install T7 and T7 microplot chambers - Slater, Trajana |
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2025-03-24 | vanderws |
First 2025 LTER soil sampling, two 0-25cm cores NE of each station, did not sample T6 since flags had been pulled and switchgrass is still not harvested - Alyssa, Slater, Brian, Trajana, Andie |
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2025-03-21 | vanderws |
Replace T7 station flags, fix all other LTER, BCSE, LTAR station flags that were leaning or fallen - |
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2025-03-19 | vanderws |
Collect LTAR leachate - Brian, Trajana |
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2025-03-18 | vanderws |
Evacuate LTAR lysimeters - |
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2025-03-17 | vanderws |
First LTAR soil sampling for 2025, two 0-25cm cores per station (NE of station) - Alyssa, Slater, Trajana, Brian |
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2025-03-13 | vanderws |
LTAR Series 1 gas sampling - Slater, Brian, Olivia LTAR Hydrosense - Alyssa |
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2025-03-12 | vanderws |
LTAR gas chamber prep, pull ASP4 microplot chambers and install in ASP3 microplots, sample ASP6 biomass to approximate what could be harvested… from each station, 1.5mN, 0mW to SE corner of 2 x 0.5m frame, plants cut at 6 inches above the ground with electric trimmers, bagged as UNSRT, if plants were lodged or lying down - they were not stood up for cutting. - Slater, Brian, Andie, Trajana |
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2025-03-11 | vanderws |
Collect LTER leachate - Slater, Brian Pull T7 flags and gas frames for burning - Olivia, Trajana Burn all T7 plots - Kevin, Sven, Dave, Stacey, Alyssa, Olivia, Trajana, Brian, Slater, plus several others (about 16 total) |
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2025-03-10 | vanderws |
Evacuate LTER lysimeters (first for 2025) - Slater, Trajana, Brian, Andie |
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2025-03-07 | vanderws |
BCSE Series 1 gas sampling - Brian, Slater Hydrosense in LTER and BCSE - Kevin trained Alyssa (MCSE and BCSE) and Stacey (DF) Evacuated LTER lysimeters that were installed in fall 2024 since conditions were very dry many did not yield leachate in November or December 2024. These lysimeters were evacuated on 3/7/2025 and left over the weekend. The lids were completely off from DF3-1 and DF3-6. On 3/11/2025 they were checked for pressure, the volume of leachate approximated and then the leachate dumped before re-evacuating with the regular sampling. - Stacey Lysimeter, pressure, volume from 3/11/2025; CF1-1, N, 0; CF1-3, N, 0; CF1-6, N, 0; CF2-1, N, 20; CF2-3, Y, 300; CF2-6, Y, 200; SF3-1, Y, 600; SF3-3, Y, 450; SF3-6, Y, 200; DF3-1, Y, 350; DF3-3, Y, not recorded; DF3-6, N, not recorded; CF3-1, Y, 50; CF3-3, N, 50; CF3-6, Y, 200 |
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2025-03-06 | vanderws |
LTER Series 1 gas sampling (last winter sampling) - Slater, Olivia, Trajana |
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2025-03-04 | vanderws |
Collect LTAR leachate - Slater, Olivia, Brian, Trajana |
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2025-03-03 | vanderws |
Evacuate LTAR lysimeters (first for 2025), ASP6R4/ASP2R4 box was frozen shut and couldn’t be opened, so those lysimeters were evacuated on 3/4/2025 and collected 3/5/2025. - Slater, Brian, Andie, Trajana |
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2025-02-28 | vanderws |
Dump 2024 LTER leftover plants and 2023 soil samples - Brian, Slater |
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2025-02-26 | vanderws |
Finish measuring trees - Slater, Trajana, Andie |
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2025-02-25 | vanderws |
Measure CF3 trees - Slater, Trajana |
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2025-02-11 | vanderws |
LTAR Series 30 gas sampling - Brian, Trajana, Olivia |
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2025-02-10 | vanderws |
Check LTAR gas chambers ahead of 2/11 sampling - |
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2025-02-06 | vanderws |
Measure trees (CF, DF) - Slater, Brian, Trajana |
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2025-02-05 | vanderws |
BCSE Series 20 gas sampling - Brian, Slater |
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2025-02-04 | vanderws |
LTER Series 16 gas sampling - Trajana, Slater, Brian, Olivia |
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2025-02-03 | vanderws |
Measure trees (CF, DF) - Alyssa, Slater, Trajana, Andie |
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2025-01-30 | vanderws |
Measure trees (CF, DF) - Slater, Brian, Trajana, Olivia |
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2025-01-29 | vanderws |
Measure trees (CF, DF) - Alyssa, Slater, Brian, Trajana, Andie |
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2025-01-28 | vanderws |
Measure trees (CF, DF) - Alyssa, Slater, Brian, Trajana, Olivia |
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2025-01-17 | vanderws |
Measure trees - Slater, Brian, Andie, Trajana |
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2025-01-16 | vanderws |
LTAR Series 29 gas sampling - Andie, Olivia, Brian |
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2025-01-10 | vanderws |
LTER Series 15 gas sampling - Andie, Trajana, Brian, Olivia |
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2025-01-09 | vanderws |
Measure trees in CF1 - Alyssa, Slater, Andie, Trajana |
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2025-01-07 | vanderws |
BCSE Series 19 gas sampling - Trajana, Slater |
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2024-12-19 | vanderws |
Final forest leaf litter collection, collected screens, bungees, and clips, flipped over traps - Brian, Slater |
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2024-12-18 | vanderws |
LTAR December soil sampling - Slater, Brian, Andie, Mae |
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2024-12-17 | vanderws |
LTER lysimeter leachate collection - Andie, Slater LTAR 28 gas sampling - Olivia, Mae, Brian, Andie (Hydrosense) |
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2024-12-16 | vanderws |
Evacuate LTER lysimeters - Alyssa, Olivia, Brian, Mae LTAR gas chamber prep - Andie, Trajana Measure T5 poplars - Andie, Trajana, Brian, Mae Scale-up soil sampling in switchgrass (L2, M3) - Todd, Chris? |
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2024-12-10 | kahmark |
Bases installed on Lux Prairie and holes augered on Lux corn (base placement tomorrow). KK, DW, ER, JR. |
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2024-12-10 | vanderws |
Collect LTAR leachate - Mae, Trajana LTER Series 14 gas sampling, first for winter so no T7 microplots, T8, prairie strips, CF or SF - Brian, Slater, Olivia Collect leaf litter from CF, DF, SF traps - Mae, Trajana, Brian, Slater, Olivia |
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2024-12-09 | vanderws |
Evacuate LTAR lysimeters - Brian, Trajana LTER gas chamber prep for first winter sampling - Slater, Mae LTER Hydrosense for Series 14 - Andie Measure poplar trees in G8, random subset of 10 trees per plot - Brian, Andie |
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2024-12-04 | vanderws |
BCSE Hydrosense for Series 18 - Andie |
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2024-12-03 | vanderws |
BCSE Series 18 gas sampling (Hydrosense tomorrow) - Brian, Trajana |
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2024-12-02 | vanderws |
GLBRC Scale-up soil sampling (all but L2, M3 switchgrass plots), ten cores per station, stations kept separate - Todd, Chris |
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2024-11-27 | vanderws |
Collect leaf litter from traps in T5, G8 and remove those traps from the fields and put them into storage; Collect leaf litter from CF, DF, SF traps - |
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2024-11-26 | vanderws |
Collect LTAR leachate - LTER Resource Gradient soil sampling, 4 cores per plot (2 within and 2 between winter wheat rows), avoiding edges, sampled at Phil’s request for CN only - |
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2024-11-25 | vanderws |
LTAR Series 27 gas sampling - Evacuate LTAR lysimeters - Install GLBRC Scale-up station flags in L1, M1, L3, M2 (not switchgrass) - |
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2024-11-22 | vanderws |
LTAR gas chamber prep - Trajana, Mae Fill SWF deep core holes - Brian, Andie, Stacey |
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2024-11-22 | sven |
Moved sensors on T7_R2 REX to the switched power SW1 and increased the cycle time to 10 minutes in order to try to reduce the battery drain as we go into the winter. |
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2024-11-21 | vanderws |
Finish threshing LTAR canola (soybeans and wheat finished yesterday), then shell and shred LTAR corn - Olivia, Trajana, with Josh Dykstra Shell and shred G1 corn - Slater, Mae, with Ethan and Jarrod |
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2024-11-20 | vanderws |
LTAR November soil sampling (3 0-25cm cores per station, for extraction, moisture, A&L S1 analysis, and archive) - Alyssa, Andie, Brian, Mae, Slater, Trajana Replace BAU1, BAU2 station flags - Slater, Trajana Thresh LTAR soybean, wheat - Brian, Andie with Josh Dykstra |
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2024-11-19 | vanderws |
Thresh LTER REX and BCSE soybeans - Alyssa, Mae with Ethan and Jarrod |
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2024-11-18 | vanderws |
LTER Post-harvest Extensive Grid soil sampling. Cores (0-25cm) taken in 5 East/West transects (avoiding sampling in the station flag walkways) using station flags as approximate guides for transects. 4 cores taken from each transect, 20 total cores per plot composited in 1 bag. T1-5 sampled. T5 was sampled using station flag locations in adjacent plots, not the condensed set-up present there. T6 is typically sampled but those plots haven’t been harvested. T6 sampling will come after harvest. - Alyssa, Brian, Slater, Trajana, Mae |
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2024-11-15 | vanderws |
Collect leaf litter from T5, G8, and forest traps - Brian, Slater, Andie Collect LTAR leachate - Trajana, Mae, Emily, Olivia |
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2024-11-14 | vanderws |
Evacuate LTAR lysimeters - Mae, Trajana, Brian, Emily Finish clipping ASP3 - |
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2024-11-13 | vanderws |
LTAR Series 26 gas sampling - Alyssa, Brian, Emily, Andie (Hydrosense) MLE MC Lake City soil sampling - Todd, Chris ASP2, ASP3 end of season plant sampling. All stations: 2mN, 0.5mW to SE corner of 2 x 0.5m frame, oriented with the 0.5m ends on the east and west. Sorted plants later in the field lab: MEDSA, TRFPR, CICSP, LOLMU, DACGL, BRSNA (live volunteer canola ) and the remainder UNSRT. - Emily, Brian, Trajana, Mae, Slater |
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2024-11-12 | vanderws |
LTER soil sampling - Alyssa, Slater, Trajana, Mae, Olivia LTAR gas chamber prep - MLE MN Escanaba soil sampling - Todd, Chris |
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2024-11-11 | vanderws |
BCSE Subplot soil sampling… This includes G1 non-stover removal area; G2, 3, 4, 5, 6, 7, 9 unfertilized area; G8 historically unfertilized area (south end, between 1st and 2nd rows); and G10 fertilized area. Nine 0-25cm cores from each area, along a diagonal transect within each subplot. When a row crop had been present then alternated coring between row and within row. No samples taken from the previously sheltered area in G5. - Alyssa, Brian, Slater, Trajana, Mae Help David Lowry’s lab sample switchgrass - Emily, Andie |
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2024-11-08 | vanderws |
Collect LTER leachate - Slater, Emily, Emily, Trajana Help David Lowry’s lab with switchgrass sampling - Olivia, Mae |
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2024-11-08 | kahmark |
KK/SV finished switchgrass gradient deep cores today, 6 plots (12 cores). Total of 64, two per plot. Core 1 was always in the south half of the plot and Core 2 in the north. |
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2024-11-07 | vanderws |
Evacuate LTER lysimeters, included all new forest lysimeters (installed in the last month: CF1, CF2, CF3, DF3, SF3). - Emily, Slater, Olivia |
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2024-11-06 | vanderws |
LTER Series 13 gas sampling - Alyssa, Slater, Emily, Trajana, Mae, Andie (Hydrosense) MLE MS soil sampling - Todd, Chris |
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2024-11-06 | kahmark |
Completed all but 12 deep cores on the Switchgrass Gradient project. KK/DW Still need to collect inorganic N samples and another gas sample due soon. |
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2024-11-05 | vanderws |
Thresh LTER soybeans - Mae, Trajana, others, two people at a time with Jarrod and Ethan LTER gas chamber prep - Emily, Slater |
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2024-11-04 | vanderws |
BCSE Series 17 gas sampling - Slater, Alyssa, Andie (Hydrosense) Thresh LTER soybeans - Trajana, Mae, Slater, Emily, two people at a time with Jarrod and Ethan BCSE main soil sampling, three 0-25cm cores per station, alternated in and between rows where present - Brian, Trajana, Mae, Andie, Alyssa |
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2024-11-01 | vanderws |
Collect LTAR leachate, collect leaf litter from traps in T5, G8, CF and DF, BCSE gas chamber prep (all needed to be installed post-harvest) - Emily, Slater, Olivia, Andie, Trajana, Mae, Brian |
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2024-10-31 | vanderws |
Evacuate LTAR lysimeters - Emily, Slater, Mae, Trajana, Brian T7 post-frost plant sampling - Slater, Brian, Trajana, Mae, Olivia |
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2024-10-30 | vanderws |
LTAR Series 25 gas sampling - Emily, Mae, Trajana, Andie (Hydrosense) Finish N-deposition fertilization (CF3 only) - Alyssa, Brian Finish installing BCSE station flags - Post-frost plant sampling in T7, 4mN, 4mW of each station flag to the SE corner of 2x0.5m frame, just UNSRT and SURFL - |
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2024-10-29 | vanderws |
Final forest fertilization (N-deposition microplots), finished all except CF3 - Alyssa, Slater, Olivia Prep LTAR gas chambers; replace BCSE station flags in G1,3,4,5,7,9,10, finished R1-3 - Brian, Trajana |
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2024-10-28 | vanderws |
LTAR soil sampling - Slater, Andie, Brian, Mae, Trajana |
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2024-10-25 | vanderws |
Shred G2 sorghum - Install BAU1 station flags - Emily, Andie |
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2024-10-24 | vanderws |
Finish LTER soil sampling - Install station flags in ASP4 - |
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2024-10-23 | sven |
Replaced the battery of the T7R4 logger on monday. The battery went down below 9V again overnight. I disconnected the SDI12 sensor power to see if there might be a short in one of the sensor cables. |
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2024-10-23 | vanderws |
LTER soil sampling (finished T1-7 R1-5 plus T1R6 and T2R6) - Brian, Mae, Trajana, Slater, Alyssa |
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2024-10-22 | vanderws |
Finish replacing T4 station flags - LTER T4 separate station, strip soil sampling. Two push core samples per station, one in the new wheat row and one in between rows. Augers had to be used for the prairie strip sampling, three 0-25cm auger samples spread across the strip avoiding edges and foot paths. - Alyssa, Slater, Emily, Brian, Olivia G1 post stover harvest residue collection. Used 0.5×0.5m frame in 7 locations in each plot: one in each windrow and one between each windrow, along a diagonal from SW to NE. Also, measured the width of each windrow and space between. - Stacey Finish G6 ANPP sampling, resume BAU1 corn sampling ahead of harvest - Alyssa, Mae, Trajana, Brian, Emily |
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2024-10-21 | vanderws |
LTER T3 separate station, strip soil sampling. Two push core samples per station, one in the new wheat row and one in between rows. Augers had to be used for the prairie strip sampling, three 0-25cm auger samples spread across the strip avoiding edges and foot paths. - Replace T4 station flags - BAU1 R1 corn sampling ahead of harvest. All stations: 0.66mN, 0.66mW to SE corner of 1.52 x 0.66m frame. - |
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2024-10-18 | vanderws |
Final aphid tower sample mailed for 2024 - Emily Collect leaf litter from T5, G8 and LTER forest traps - Continue G6 ANPP - |
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2024-10-17 | vanderws |
Finish installing new LTER forest lysimeters in CF1 lysimeters 1 and 6 - Kevin, Dave Install station flags in LTER T1-3 - ASP4 corn sampling, All stations: 0.66mN, 0.66mW to SE corner of 1.52 x 0.66m frame. - Resume G6 ANPP sampling - |
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2024-10-16 | vanderws |
LTAR Series 24 gas sampling - Mae, Trajana, Alyssa, Andie (Hydrosense) Finish G2 ANPP sampling - Start G6 ANPP sampling. All stations: 3mN, 1.5mE to SW corner of 1.52x0.66m frame - M4 plant species composition transects - Alyssa, Andie Install LTAR station flags - Stacey Install lysimeters into CF2 lysimeters 1, 3, 6, and CF1 lysimeter 3 - Kevin, Dave |
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2024-10-15 | vanderws |
Finish G1 ANPP sampling - Start G2 sorghum ANPP sampling. All stations: 3mN, 1.5mE to SW corner of 1.52x0.66m frame. Weigh wet to later calculate percent moisture ahead of shredding - LTAR gas chamber prep - Install DF3 lysimeter 6, and SF3 lysimeters 1, 3, 6. Installation rod could not be pulled from the first hole at SF3-1. Rod had to be dug out, the hole filled in, and the lysimeter installed in a new hole. - Kevin, Dave |
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2024-10-14 | vanderws |
Finish G1 corn ANPP sampling - Slater, Andie, Brian, Trajana, Mae Install new lysimeters in CF3 (lysimeters 1, 3, 6) and DF3 (lysimeters 1, 3) - Kevin, Dave |
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2024-10-11 | vanderws |
Finish G3 soybean ANPP sampling, start G1 corn sampling (Used 1.52 m x 0.66 m frame All stations: 3mN, 1.5mE to SW corner of 1.52x0.66m frame) - LTER Hydrosense for Series 12 - Andie |
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2024-10-10 | vanderws |
G6 species composition transects. Three NS transects per plot, main only. Each transect ~2m west of the station flags and numbered 1-3 based on the station number. Stop about every 1m to identify and measure first intercepted plant. - G3 soybean ANPP (should have been sampled earlier, plants are past peak). Used 1.52 m x 0.66 m frame. All stations: 3mN, 1.5mE to SW corner of 1.52x0.66m frame. Finished R1-3. - Slater, Brian, Trajana, Mae |
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2024-10-09 | vanderws |
LTER Series 12 gas sampling. Prairie strip sampling had to be done in the afternoon because only four trained techs were present to sample. No personnel available to take Hydrosense readings. Since no rain in forecast, Hydrosense data will be collected on 10/11/2024 by Andie. - Alyssa trained Trajana and Mae, Slater, Andie, Brian |
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2024-10-08 | vanderws |
LTER gas chamber prep - Slater, Mae, Trajana, Brian Finish T4 soybean sampling - Alyssa, Emily, Brian, Mae, Trajana Collect soybean stover from the irrigated blocks 5-8 of the LTER Resource Gradient following harvest. Same procedure as 10/4/2024 rainfed. - Stacey |
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2024-10-07 | vanderws |
BCSE Series 16 gas sampling - Andie (Hydrosense too), Slater Sample LTER T4 soybeans ahead of harvest, used 1.52 x 0.66 m frame, All stations: 3.04m N and 1.52m W from each station flag to SE corner of frame. Cut with pruners and counted the number of soybean plants per row and recorded on bag(s) of soybean. Separate weeds to species. - |
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2024-10-04 | vanderws |
Scale-up plant species composition transects - Collect leaf litter from traps in T5, G8, CF, DF, and SF - Prep BCSE gas chambers - Reclip T6R3S2,3 ANPP samples (4mN, 4mE) since the original samples were accidentally mixed together during sorting - Collect soybean stover from the ground following harvest in rainfed blocks 1-4 of the LTER Resource Gradient. Yield strips had been harvested from the plots but the rest of the plants remained. Soybean stover was collected from the ground to fill a 5# bag about 1/3 full, avoiding the northern and southern most 2m, as well as the previously sheltered area in F5. Careful to avoid any other plant fragments lying on the ground. All samples were put into the oven to dry. - Stacey |
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2024-10-03 | vanderws |
Finish clipping SF ANPP and ASP5 R1,2 soybeans - Alyssa, Emily, Olivia, Brian, Trajana, Mae Start Scale-up plant species composition transects - |
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2024-10-02 | vanderws |
Finished BCSE G4,5,7,9,10 ANPP sampling! - Slater, Emily, Brian, Andie, Mae, Trajana, Alyssa Start sampling SF ANPP, 2mN, 2mE of each station flag to SW corner of 2 x 0.5m frame - Alyssa, Slater, Andie, Brian, Emily |
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2024-10-01 | vanderws |
T3 soybean sampling (same as T1, 2) - Slater, Emily, Brian, Olivia, Mae, Trajana BCSE G4,5,7,9,10 ANPP sampling - Slater, Emily, Brian, Olivia, Mae, Trajana, Alyssa |
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2024-09-30 | vanderws |
Replace LTAR station flags ahead of soil sampling - Stacey LTAR 23 gas sampling - Andie (+Hydrosense), Slater, Brian LTAR soil sampling, too dry for push coring, 1 bucket auger sample to 25cm depth at each station, when row crop present… one core in the row, one halfway between rows, and one a quarter of the way between rows - Alyssa, Trajana, Mae, Slater, Brian |
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2024-09-27 | vanderws |
LTAR gas chamber prep - ASP5 R3,4 (R1,2 were not quite ready) soybean sampling, All stations: 0.5mN, 0.5mWto SE corner of 2 x 0.5m frame, oriented with the 0.5m ends on the east and west - BCSE G4,5,7,9,10 ANPP sampling - |
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2024-09-25 | vanderws |
Finish clipping ANPP samples from T6, then clip BCSE G 4,5,7,9,10 ANPP - Finish MS MLE species composition transects - |
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2024-09-24 | dave |
Checked all chambers in G1 and G5, except G5-5 (closed at the time). Trimmed corn leaves out of the path of the closures on G1 chambers. Most G5s were in good shape and required minimal trimming on this visit. All G5 lid connections appeared to be intact and working properly. |
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2024-09-24 | vanderws |
MLE plant species composition, Lux Arbor (MS) - Alyssa, Slater, Emily, Brian, Olivia, Trajana |
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2024-09-23 | vanderws |
T6 ANPP sampling R1-4; 2mN, 2mE to SW corner of 2 x 0.5m frame; refrigerated to sort to species later - Alyssa, Emily, Brian, Trajana, Mae, Andie Finish setting forest leaf litter traps in SF1, DF2, and CF2 - |
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2024-09-20 | vanderws |
LTAR BAU2 soybean sampling ahead of harvest. All stations: 0.5mN, 0.5mWto SE corner of 2 x 0.5m frame, oriented with the 0.5m ends on the east and west. Count the number of soybean stems per row, clip and record on bag. - Slater, Olivia, Andie, Trajana, Quinn Set forest leaf litter traps - Emily, Brian |
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2024-09-19 | sven |
The CR1000X uses a AA size Li-Ion battery. |
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2024-09-19 | vanderws |
Finish sampling T2 main and REX soybeans - Emily, Slater, Brian, Trajana, Quinn, Olivia |
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2024-09-19 | sven |
Flux tower battery finally died. I connected the solar pannel and it is charging. The morningstart webapp shows a Current Limiting Alarm, but no faults. Lights are blinking green so far. After starting the CR1000x had trouble getting an ip address. Possibly due to the router taking longer to start up and the CR1000x shutting down it’s ethernet port after 1 minute. I changed the setting to keep the ethernet port running. I poured the equivalent of 1 inch of rainfall through the raingauge and got pretty close to 100 tips. So I think the gauge is calibrated in english units. I’ve adjusted the program. |
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