| RecYear | | Physical quantity | Year samples were taken |
| BLOCK | | Physical quantity | The experiment contained 4 blocks |
| WPTRT | | Nominal | Whole-plot heterogeneity treatment (maxhet and control) |
| RESTORE_YR | | Physical quantity | Growing season since restored from agriculture |
| PLOT | | Physical quantity | The experiment consisted of 16 plots; plots 1, 3, 6, 8, 9, 10, 14 and 15 were used in this study |
| CVNO3 | | Physical quantity | Whole-plot coefficient of variation in resin collected nitrate over the growing season (%). |
| CVANPP | | Physical quantity | Whole-plot coefficient of variation in ANPP (%) |
| WP_H | | Physical quantity | Shannon’s diversity (H’) at the whole-plot scale calculated from the average cover of each species
using all subplots; measurement is unit-less
|
| WP_R | | Physical quantity | Whole-plot richness; number of species observed from all 0.25 m2 sampling quadrats within a
plot
|
| ANGE | | Physical quantity | Andropogon gerardii Vitman |
| SCSC | | Physical quantity | Schizachyrium scoparium (Michx.) Nash (Michx.) Nash |
| BOCU | | Physical quantity | Bouteloua curtipendula (Michx.) Torr |
| KOMA | | Physical quantity | Koeleria macrantha (Ledeb.) Schult |
| PAV12 | | Physical quantity | Panicum virgatum L. |
| SONU2 | | Physical quantity | Sorghastrum nutans (L.) Nash |
| AMCA6 | | Physical quantity | Amorpha canescens Pursh |
| ARLU | | Physical quantity | Artemisia ludoviciana Nutt |
| ASVE | | Physical quantity | Asclepias verticillata L. |
| ASVI12 | | Physical quantity | Asclepias viridis Walter |
| BAAU | | Physical quantity | Baptisia australis (L.) R. Br. |
| BABR2 | | Physical quantity | Baptisia bracteata Muhl. ex Elliott |
| CAIN2 | | Physical quantity | Callirhoe involucrata (Torr. & A. Gray) A. Gray |
| DACA7 | | Physical quantity | Dalea candida Michx. ex Willd |
| DAPU5 | | Physical quantity | Dalea purpurea Vent |
| DEIL | | Physical quantity | Desmanthus illinoensis (Michx.) MacMill. ex B.L. Rob. & Fernald |
| BREU | | Physical quantity | Brickellia eupatorioides (L.) Shinners |
| LEDE | | Physical quantity | Lepidium densiflorum Schrad |
| LECA8 | | Physical quantity | Lespedeza capitata Michx |
| LIPU | | Physical quantity | Liatris punctata Hook |
| OEMA | | Physical quantity | Oenothera macrocarpa Nutt |
| PSTE5 | | Physical quantity | Psoralidium tenuiflorum (Pursh) Rydb |
| RACO3 | | Physical quantity | Ratibida columnifera (Nutt.) Woot. & Standl |
| ROAR3 | | Physical quantity | Rosa arkansana Porter |
| RUHU | | Physical quantity | Ruellia humilis Nutt |
| SAAZ | | Physical quantity | Salvia azurea Michx. ex Lam |
| MINU6 | | Physical quantity | Mimosa nuttallii (DC. ex Britton & Rose) B.L. Turner |
| SPAS | | Physical quantity | Sporobolus asper (P. Beauv.) Kunth |
| VEFA2 | | Physical quantity | Vernonia fasciculata Michx |
| UNWD | | Physical quantity | Unidentified woody species |
| UNLEG | | Physical quantity | Unidentified legume |
| UNFB1 | | Physical quantity | Unidentified forb 1 (annual/perennial not known) |
| UNFB2 | | Physical quantity | Unidentified forb 2 (annual/perennial not known) |
| UNGR | | Physical quantity | Unidentified grass (C3/C4, annual/perennial unknown) |
| MANE | | Physical quantity | Malva neglecta Wallr |
| ABTH | | Physical quantity | Abutilon theophrasti Medik |
| AMRE | | Physical quantity | Amaranthus retroflexus L. |
| AMTU | | Physical quantity | Amaranthus tuberculatus (Moq.) Sauer |
| AMPS | | Physical quantity | Ambrosia psilostachyia DC. |
| CHAL7 | | Physical quantity | Chenopodium album L. |
| CUFO | | Physical quantity | Cucurbita foetidissima Kunth |
| COCA5 | | Physical quantity | Conyza canadensis (L.) Cronquist |
| BASC5 | | Physical quantity | Bassia scoparia (L.) A.J. Scott |
| MEOF | | Physical quantity | Melilotus officinalis (L.) Lam |
| GAAP2 | | Physical quantity | Galium aparine L. |
| PHV15 | | Physical quantity | Physalis virginiana Mill |
| PHAM4 | | Physical quantity | Phytolacca americana L |
| SORO | | Physical quantity | Solanum rostratum Dunal |
| SYOR | | Physical quantity | Symphoricarpos orbiculatus Moench |
| VIAM | | Physical quantity | Vicia americana Muhl. ex Willd |
| BRIN2 | | Physical quantity | Bromus inermis Leyss |
| CYDA | | Physical quantity | Cynodon dactylon (L.) Pers |
| DISA | | Physical quantity | Digitaria sanguinalis (L.) Scop |
| ECMU2 | | Physical quantity | Echinochloa muricata (P. Beauv.) Fernald |
| ELIN3 | | Physical quantity | Eleusine indica (L.) Gaertn |
| ERCI | | Physical quantity | Eragrostis cilianensis (All.) Vign. ex Janchen |
| UNFZG | | Physical quantity | Unknown grass (described fuzzy) |
| PACA6 | | Physical quantity | Panicum capillare L. |
| PADI | | Physical quantity | Panicum dichotomiflorum Michx |
| UNPAN | | Physical quantity | Panicum spp. (unidentified) |
| SEFA | | Physical quantity | Setaria faberi Herrm |
| SEPU8 | | Physical quantity | Setaria pumila (Poir.) Roem. & Schult |
| UNSET | | Physical quantity | Setaria spp. (unidentified) |
| UNC4G | | Physical quantity | Unknown C4 grass |
| ASTU | | Physical quantity | Asclepias tuberosa L. |
| HEHE5 | | Physical quantity | Heliopsis helianthoides (L.) Sweet |
| MOFI | | Physical quantity | Monarda fistulosa L. |
| ACMI2 | | Physical quantity | Achillea millefolium L. |
| SYLA3 | | Physical quantity | Symphyotrichum laeve (L.) Á. Löve & D. Löve |
| DEIL2 | | Physical quantity | Desmodium illinoense A. Gray |
| EUAL3 | | Physical quantity | Eupatorium altissimum L. |
| TECA3 | | Physical quantity | Teucrium canadense L. |
| TRBR | | Physical quantity | Tradescantia bracteata Small |
| UNSD | | Physical quantity | Unknown seedling |
| UNUC | | Physical quantity | Unknown unclassified |
| ASSY | | Physical quantity | Asclepias syriaca L. |
| UNMAL | | Physical quantity | Unknown nightshade (Malvaceae) |
| UNFRAG | | Physical quantity | Fragaria spp. (unidentified) |
| MESA | | Physical quantity | Medicago sativa L. |
| TAOF | | Physical quantity | Taraxacum officinale F.H. Wigg |
| TRRE3 | | Physical quantity | Trifolium repens L. |
| SYERE | | Physical quantity | Symphyotrichum ericoides (L.) G.L. Nesom var. ericoides |
| ECAN2 | | Physical quantity | Echinacea angustifolia DC. |
| TRPE4 | | Physical quantity | Triodanis perfoliata (L.) Nieuwl. |