GLBRC Sustainability Data Catalog

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Data in the KBS LTER core database may not be published without written permission of the lead investigator or project director Full terms of use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; including switchgrass (G5), miscanthus (G6), native grasses (G7), hybrid poplar (G8), early successional (G9), and restored prairie (G10)) 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.


Experiment: GLBRC Marginal Land Experiment
Data available from: August 2017 to September 2021
Dataset: GLBRC126
Datatable ID: GLBRC126-002.123
Core Areas Populations
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Last Updated 2023-10-24
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
has lodged had the plant that was measured lodged? True (t) or false (f)
comments comments about the observation

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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
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