Plant Canopy Species and Height — GLBRC Marginal Land Experiment
Data in the KBS LTER core database may not be published without written permission of the lead investigator or project director Full terms of use
Canopy species composition and height is surveyed at or near maturity of the dominant plant species using the line point intercept method
This datatable is part of the Cropping Systems – Marginal Land Experiment dataset. This dataset contains data on the biofuel cropping systems of the GLBRC Marginal Land Experiment (MLE) originally established in 2013 at north, central and south sites in Wisconsin and Michigan. The experiment consists of six different biofuel cropping systems (a.k.a. treatments; G5-G10; including switchgrass, miscanthus, native grasses, hybrid poplar, early successional, and restored prairie) plus an historical vegetation control (G11), replicated in each of 4 blocks (R1-R4) at each site. Split-plot treatments were initiated in 2014-2016 to examine the effect of nitrogen fertilization [plus_n (+N) vs control (0N)] on all cropping systems.
Seasonal deployment of rainfall exclusion (rainout) shelters in the fertilized split plot of the switchgrass (G5) treatment began in 2018 to examine the effects of drought on plant growth. See the Marginal Land Rainfall Exclusion Experiment for these data.
Note that Block 1 at the Wisconsin Central – Hancock site was retired in 2015 and the entire Wisconsin South – Oregon site was retired after 2018 growing season when the maintenance, harvest, sampling and analysis of the remaining Wisconsin sites was transferred from UW staff to MSU staff.
Note
| Experiment: | GLBRC Marginal Land Experiment |
| Data available from: | August 2017 to September 2021 |
| Dataset: | GLBRC126 |
| Datatable ID: | GLBRC126-002.108 |
| Core Areas | Populations |
| Repository link: | |
| Related Tables: | |
| Personnel: |
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| Last Updated | 2023-03-08 |
| Variate | Description | Units |
|---|---|---|
| sample date | sample date | |
| site | experimental site | |
| treatment | treatment sampled | |
| replicate | replicate sampled | |
| split plot | plus_n or control (no N) subplot | |
| species | species of first plant intercepted or ground cover type if no plant intercepted | |
| height | height of the first plant intercepted | centimeter |
| has lodged | had the plant that was measured lodged? True (t) or false (f) | |
| comments | comments about the observation |
Data Excerpt
| sample_date | site | treatment | replicate | split_plot | species | height_cm | has_lodged | comment |
|---|---|---|---|---|---|---|---|---|
| 2018-09-06 | Escanaba | G5 | R1 | plus_n | Panicum virgatum L. | 127.0 | true | disturbed |
| 2019-09-06 | Lake City | G11 | R2 | control | Bromus inermis Leyss. | 49.0 | false | |
| 2018-09-05 | Hancock | G9 | R2 | control | Poa pratensis L. | 30.0 | false | |
| 2019-08-27 | Lux Arbor | G9 | R2 | plus_n | Centaurea stoebe L. ssp. micranthos (Gugler) Hayek | 52.0 | false | |
| 2019-09-09 | Lux Arbor | G9 | R3 | plus_n | Euthamia graminifolia (L.) Nutt. | 74.0 | false |