Productivity and diversity of annually harvested reconstructed prairie communities

Author(s): Farnaz Kordbacheh, Meghann Jarchow, Lydia English, Matt Liebman

Abstract:

Productivity and diversity of annually harvested reconstructed prairie communities database was compiled to test whether the long-term maintenance of biodiversity can be achieved alongside substantial productivity in fertilized mixed-species prairie. Using this database, we report how NPK fertilizer application, precipitation, and time affected the species composition and productivity of reconstructed prairie communities harvested annually as biofuel feedstocks over a nine-year period.
Three main datasets were used for the analyses conducted, each encompassed a part of the full picture. First, we used dataset_productivity_precipitation_diversity to evaluate the relationship between productivity and precipitation. We also used this file to run the Analysis of Variance (ANOVA) on productivity, species richness, Simpson’s evenness and Simpson’s diversity. Results of this analysis are shown in Figure 1 and figure 2 of our article. Further, we used dataset_species_cover for the ANOVA on the cover of individual plant species, cover of functional groups-i.e. C3 grasses, C4 grasses, the non-leguminous, the leguminous and cover of forbs partitioned by flowering time (see Table 2, Figure 3 and Figure 4). For creating a complementary picture from changes in species composition over time and treatment, we used dataset_species_proportional_cover for multivariate analyses- i.e. non-metric multidimensional Scaling (NMDS), Multi Response-Permutation Procedure (MRPP), and the matching of
ordination method (see Figure 5A and 5B). Usage of these datasets has no copyright or proprietary restrictions other than citation of the paper.

Funder: Leopold Center for Sustainable Agriculture

Award Title:

Conversion to perennial vegetation: Quantifying soil water regime, aeration, and implications for enhancing soil resilience to climate change.

Award Number: E2009-18

Keywords:

agricultural land management, bioenergy, biomass productivity, community ecology, ecology, fertilisers and agrochemical application, flowering phenology, nitrogen fertilization effects, nitrogen fertilizers, pollinators, prairie diversity, precipitation, reconstructed prairie, sustainable agricultural development, terrestrial ecology

Project (Abbreviated name):

COBS_Kordbacheh_prairie

Team: COBS

Geographic Location:

The experiment was conducted at the Iowa State University Agronomy and Agricultural Engineering South Reynoldson Research Farm located in Boone County, Iowa at the corner of 300th St. and Violet Ave.

Families:

Amaranthaceae, Apiaceae, Apocynaceae, Asteraceae, Chenopodiaceae, Commelinaceae, Euphorbiaceae, Fabaceae, Lamiaceae, Oxalidaceae, Plantaginaceae, Poaceae, Salicaceae, Solanaceae

Species:

Amaranthus retroflexus, Ambrosia artemisiifolia, Amorpha canescens, Andropogon gerardi, Asclepias syriaca, Asclepias tuberosa, Astragalus canadensis, Baptisia alba, Bromus inermis, Chamaecrista fasciculata, Chenopodium album, Cirsium arvense, Dalea purpur

Full Metadata:

COBS_Kordbacheh_prairie metadata.pdf (342.25 KB)

Data Mirror:

Data Table Column Names and Descriptions

Table name	Column name	Data type	Units	Column description
data.dataset_productivity_precipitation_diversity	Block	float	number	Blocks containing established prairie vegetation (27m x 61m).
data.dataset_productivity_precipitation_diversity	Diversity	float	NA	Simpson's diversity within each plot calculated as the summation of the squared value of the proportional abundance of the ith species in each plot (pi). Data were recorded in 2009-2011, 2014, 2015, and 2017.
data.dataset_productivity_precipitation_diversity	Evenness	float	NA	Simpson's evenness within each plot calculated as estimated Simpson's diversity divided by species richness per plot (S). Data were recorded in 2009-2011, 2014, 2015, and 2017.
data.dataset_productivity_precipitation_diversity	Precipitation	integer	milliliter	Cumulative total precipitation (mm) from October of the previous year through September of each harvest year. Data were recorded for 9 years (2009-2017).
data.dataset_productivity_precipitation_diversity	Productivity	float	kilogramPerHectare	Annually harvested biomass (kg ha-1) per plot. Data was recorded during 9 years (2009-2017). All plots had recorded values, except for one plot (2014, block 1, low-fertility)
data.dataset_productivity_precipitation_diversity	Richness	float	number	Species richness within each plot. Data were recorded in 2009-2011, 2014, 2015, and 2017.
data.dataset_productivity_precipitation_diversity	Treatment	string	NA	Treatments were unfertilized prairie which received no N, P or K (low-fertility) and fertilized prarie which received N,P, K (high-fertility). For more information see article.
data.dataset_productivity_precipitation_diversity	Year	integer	number	Year in which measurements were made.
data.dataset_productivity_precipitation_diversity	dataset productivity precipitation diversity pkey	integer	dimensionless	A unique primary key for this table.
data.dataset_species_cover	Amaranthus retroflexus	float	NA	Cover of the named Genus_species. Calculated as total pin contacts divided by total number of pins (96) dropped per plot (m2/m2).
data.dataset_species_cover	Ambrosia artemisiifolia	float	NA	Cover of the named Genus_species. Calculated as total pin contacts divided by total number of pins (96) dropped per plot (m2/m2).
data.dataset_species_cover	Amorpha canescens	float	NA	Cover of the named Genus_species. Calculated as total pin contacts divided by total number of pins (96) dropped per plot (m2/m2).
data.dataset_species_cover	Andropogon gerardii	float	NA	Cover of the named Genus_species. Calculated as total pin contacts divided by total number of pins (96) dropped per plot (m2/m2).
data.dataset_species_cover	Asclepias syriaca	float	NA	Cover of the named Genus_species. Calculated as total pin contacts divided by total number of pins (96) dropped per plot (m2/m2).
data.dataset_species_cover	Asclepias tuberosa	float	NA	Cover of the named Genus_species. Calculated as total pin contacts divided by total number of pins (96) dropped per plot (m2/m2).
data.dataset_species_cover	Aster ericoides	float	NA	Cover of the named Genus_species. Calculated as total pin contacts divided by total number of pins (96) dropped per plot (m2/m2).
data.dataset_species_cover	Aster praealtus	float	NA	Cover of the named Genus_species. Calculated as total pin contacts divided by total number of pins (96) dropped per plot (m2/m2).
data.dataset_species_cover	Astragalus canadensis	float	NA	Cover of the named Genus_species. Calculated as total pin contacts divided by total number of pins (96) dropped per plot (m2/m2).
data.dataset_species_cover	Baptisia alba	float	NA	Cover of the named Genus_species. Calculated as total pin contacts divided by total number of pins (96) dropped per plot (m2/m2).
data.dataset_species_cover	Block	float	number	Blocks containing established prairie vegetation (27m x 61m).
data.dataset_species_cover	Bromus inermis	float	NA	Cover of the named Genus_species. Calculated as total pin contacts divided by total number of pins (96) dropped per plot (m2/m2).
data.dataset_species_cover	Chamaecrista fasciculata	float	NA	Cover of the named Genus_species. Calculated as total pin contacts divided by total number of pins (96) dropped per plot (m2/m2).
data.dataset_species_cover	Chenopodium album	float	NA	Cover of the named Genus_species. Calculated as total pin contacts divided by total number of pins (96) dropped per plot (m2/m2).
data.dataset_species_cover	Cirsium arvense	float	NA	Cover of the named Genus_species. Calculated as total pin contacts divided by total number of pins (96) dropped per plot (m2/m2).
data.dataset_species_cover	Conyza canadensis	float	NA	Cover of the named Genus_species. Calculated as total pin contacts divided by total number of pins (96) dropped per plot (m2/m2).
data.dataset_species_cover	Dalea purpureum	float	NA	Cover of the named Genus_species. Calculated as total pin contacts divided by total number of pins (96) dropped per plot (m2/m2).
data.dataset_species_cover	Desmanthus illinoensis	float	NA	Cover of the named Genus_species. Calculated as total pin contacts divided by total number of pins (96) dropped per plot (m2/m2).
data.dataset_species_cover	Desmodium canadensis	float	NA	Cover of the named Genus_species. Calculated as total pin contacts divided by total number of pins (96) dropped per plot (m2/m2).
data.dataset_species_cover	Echinacea pallida	float	NA	Cover of the named Genus_species. Calculated as total pin contacts divided by total number of pins (96) dropped per plot (m2/m2).
data.dataset_species_cover	Echinochloa crusgalli	float	NA	Cover of the named Genus_species. Calculated as total pin contacts divided by total number of pins (96) dropped per plot (m2/m2).
data.dataset_species_cover	Elymus canadensis	float	NA	Cover of the named Genus_species. Calculated as total pin contacts divided by total number of pins (96) dropped per plot (m2/m2).
data.dataset_species_cover	Eryngium yuccifolium	float	NA	Cover of the named Genus_species. Calculated as total pin contacts divided by total number of pins (96) dropped per plot (m2/m2).
data.dataset_species_cover	Euphorbia dentata	float	NA	Cover of the named Genus_species. Calculated as total pin contacts divided by total number of pins (96) dropped per plot (m2/m2).
data.dataset_species_cover	Helianthis laetiflorus	float	NA	Cover of the named Genus_species. Calculated as total pin contacts divided by total number of pins (96) dropped per plot (m2/m2).
data.dataset_species_cover	Helianthis maximilliani	float	NA	Cover of the named Genus_species. Calculated as total pin contacts divided by total number of pins (96) dropped per plot (m2/m2).
data.dataset_species_cover	Heliopsis helianthoides	float	NA	Cover of the named Genus_species. Calculated as total pin contacts divided by total number of pins (96) dropped per plot (m2/m2).
data.dataset_species_cover	Lactuca serriola	float	NA	Cover of the named Genus_species. Calculated as total pin contacts divided by total number of pins (96) dropped per plot (m2/m2).
data.dataset_species_cover	Lespedeza capitata	float	NA	Cover of the named Genus_species. Calculated as total pin contacts divided by total number of pins (96) dropped per plot (m2/m2).
data.dataset_species_cover	Liatris pycnostachya	float	NA	Cover of the named Genus_species. Calculated as total pin contacts divided by total number of pins (96) dropped per plot (m2/m2).
data.dataset_species_cover	Medicago lupulina	float	NA	Cover of the named Genus_species. Calculated as total pin contacts divided by total number of pins (96) dropped per plot (m2/m2).
data.dataset_species_cover	Melilotus albus	float	NA	Cover of the named Genus_species. Calculated as total pin contacts divided by total number of pins (96) dropped per plot (m2/m2).
data.dataset_species_cover	Melilotus officinalis	float	NA	Cover of the named Genus_species. Calculated as total pin contacts divided by total number of pins (96) dropped per plot (m2/m2).
data.dataset_species_cover	Monarda fistulosa	float	NA	Cover of the named Genus_species. Calculated as total pin contacts divided by total number of pins (96) dropped per plot (m2/m2).
data.dataset_species_cover	Muhlenbergia frondosa	float	NA	Cover of the named Genus_species. Calculated as total pin contacts divided by total number of pins (96) dropped per plot (m2/m2).
data.dataset_species_cover	Other	float	NA	Cover of the named Genus_species. Calculated as total pin contacts divided by total number of pins (96) dropped per plot (m2/m2).
data.dataset_species_cover	Oxalis stricta	float	NA	Cover of the named Genus_species. Calculated as total pin contacts divided by total number of pins (96) dropped per plot (m2/m2).
data.dataset_species_cover	Panicum virgatum	float	NA	Cover of the named Genus_species. Calculated as total pin contacts divided by total number of pins (96) dropped per plot (m2/m2).
data.dataset_species_cover	Phleum pratense	float	NA	Cover of the named Genus_species. Calculated as total pin contacts divided by total number of pins (96) dropped per plot (m2/m2).
data.dataset_species_cover	Physalis subglabrata	float	NA	Cover of the named Genus_species. Calculated as total pin contacts divided by total number of pins (96) dropped per plot (m2/m2).
data.dataset_species_cover	Poa pratensis	float	NA	Cover of the named Genus_species. Calculated as total pin contacts divided by total number of pins (96) dropped per plot (m2/m2).
data.dataset_species_cover	Populus deltoides	float	NA	Cover of the named Genus_species. Calculated as total pin contacts divided by total number of pins (96) dropped per plot (m2/m2).
data.dataset_species_cover	Pycnanthemum virginianum	float	NA	Cover of the named Genus_species. Calculated as total pin contacts divided by total number of pins (96) dropped per plot (m2/m2).
data.dataset_species_cover	Ratibida pinnata	float	NA	Cover of the named Genus_species. Calculated as total pin contacts divided by total number of pins (96) dropped per plot (m2/m2).
data.dataset_species_cover	Rudbeckia hirta	float	NA	Cover of the named Genus_species. Calculated as total pin contacts divided by total number of pins (96) dropped per plot (m2/m2).
data.dataset_species_cover	Schizachyrium scoparium	float	NA	Cover of the named Genus_species. Calculated as total pin contacts divided by total number of pins (96) dropped per plot (m2/m2).
data.dataset_species_cover	Setaria faberi	float	NA	Cover of the named Genus_species. Calculated as total pin contacts divided by total number of pins (96) dropped per plot (m2/m2).
data.dataset_species_cover	Silphium integrifolium	float	NA	Cover of the named Genus_species. Calculated as total pin contacts divided by total number of pins (96) dropped per plot (m2/m2).
data.dataset_species_cover	Silphium lactinatum	float	NA	Cover of the named Genus_species. Calculated as total pin contacts divided by total number of pins (96) dropped per plot (m2/m2).
data.dataset_species_cover	Solanum ptycanthum	float	NA	Cover of the named Genus_species. Calculated as total pin contacts divided by total number of pins (96) dropped per plot (m2/m2).
data.dataset_species_cover	Solidago canadensis	float	NA	Cover of the named Genus_species. Calculated as total pin contacts divided by total number of pins (96) dropped per plot (m2/m2).
data.dataset_species_cover	Solidago rigida	float	NA	Cover of the named Genus_species. Calculated as total pin contacts divided by total number of pins (96) dropped per plot (m2/m2).
data.dataset_species_cover	Sonchus asper	float	NA	Cover of the named Genus_species. Calculated as total pin contacts divided by total number of pins (96) dropped per plot (m2/m2).
data.dataset_species_cover	Sorghastrum nutans	float	NA	Cover of the named Genus_species. Calculated as total pin contacts divided by total number of pins (96) dropped per plot (m2/m2).
data.dataset_species_cover	Sporobolus heterolepis	float	NA	Cover of the named Genus_species. Calculated as total pin contacts divided by total number of pins (96) dropped per plot (m2/m2).
data.dataset_species_cover	Taraxacum officinale	float	NA	Cover of the named Genus_species. Calculated as total pin contacts divided by total number of pins (96) dropped per plot (m2/m2).
data.dataset_species_cover	Tradescantia ohiensis	float	NA	Cover of the named Genus_species. Calculated as total pin contacts divided by total number of pins (96) dropped per plot (m2/m2).
data.dataset_species_cover	Treatment	string	NA	Treatments were unfertilized prairie which received no N, P or K (low-fertility) and fertilized prarie which received N,P, K (high-fertility). For more information see article.
data.dataset_species_cover	Trifolium hybridum	float	NA	Cover of the named Genus_species. Calculated as total pin contacts divided by total number of pins (96) dropped per plot (m2/m2).
data.dataset_species_cover	Trifolium pratense	float	NA	Cover of the named Genus_species. Calculated as total pin contacts divided by total number of pins (96) dropped per plot (m2/m2).
data.dataset_species_cover	Vernonia fasciculata	float	NA	Cover of the named Genus_species. Calculated as total pin contacts divided by total number of pins (96) dropped per plot (m2/m2).
data.dataset_species_cover	Veronicastrum virginicum	float	NA	Cover of the named Genus_species. Calculated as total pin contacts divided by total number of pins (96) dropped per plot (m2/m2).
data.dataset_species_cover	Year	integer	number	Years in which measurements were made.
data.dataset_species_cover	Year Block Treatment	string	NA	Combination of the Year, Block and Treatment variables.
data.dataset_species_cover	dataset species cover pkey	integer	dimensionless	A unique primary key for this table.
data.dataset_species_proportional_cover	Amaranthus retroflexus	float	NA	Proportional cover for the Genus_species column name was calculated as each species' cover divided by total cover of all species per plot (m2/m2).
data.dataset_species_proportional_cover	Ambrosia artemisiifolia	float	NA	Proportional cover for the Genus_species column name was calculated as each species' cover divided by total cover of all species per plot (m2/m2).
data.dataset_species_proportional_cover	Amorpha canescens	float	NA	Proportional cover for the Genus_species column name was calculated as each species' cover divided by total cover of all species per plot (m2/m2).
data.dataset_species_proportional_cover	Andropogon gerardii	float	NA	Proportional cover for the Genus_species column name was calculated as each species' cover divided by total cover of all species per plot (m2/m2).
data.dataset_species_proportional_cover	Asclepias syriaca	float	NA	Proportional cover for the Genus_species column name was calculated as each species' cover divided by total cover of all species per plot (m2/m2).
data.dataset_species_proportional_cover	Asclepias tuberosa	float	NA	Proportional cover for the Genus_species column name was calculated as each species' cover divided by total cover of all species per plot (m2/m2).
data.dataset_species_proportional_cover	Aster ericoides	float	NA	Proportional cover for the Genus_species column name was calculated as each species' cover divided by total cover of all species per plot (m2/m2).
data.dataset_species_proportional_cover	Aster praealtus	float	NA	Proportional cover for the Genus_species column name was calculated as each species' cover divided by total cover of all species per plot (m2/m2).
data.dataset_species_proportional_cover	Astragalus canadensis	float	NA	Proportional cover for the Genus_species column name was calculated as each species' cover divided by total cover of all species per plot (m2/m2).
data.dataset_species_proportional_cover	Baptisia alba	float	NA	Proportional cover for the Genus_species column name was calculated as each species' cover divided by total cover of all species per plot (m2/m2).
data.dataset_species_proportional_cover	Block	float	number	Blocks containing established prairie vegetation (27m x 61m).
data.dataset_species_proportional_cover	Bromus inermis	float	NA	Proportional cover for the Genus_species column name was calculated as each species' cover divided by total cover of all species per plot (m2/m2).
data.dataset_species_proportional_cover	Chamaecrista fasciculata	float	NA	Proportional cover for the Genus_species column name was calculated as each species' cover divided by total cover of all species per plot (m2/m2).
data.dataset_species_proportional_cover	Chenopodium album	float	NA	Proportional cover for the Genus_species column name was calculated as each species' cover divided by total cover of all species per plot (m2/m2).
data.dataset_species_proportional_cover	Cirsium arvense	float	NA	Proportional cover for the Genus_species column name was calculated as each species' cover divided by total cover of all species per plot (m2/m2).
data.dataset_species_proportional_cover	Conyza canadensis	float	NA	Proportional cover for the Genus_species column name was calculated as each species' cover divided by total cover of all species per plot (m2/m2).
data.dataset_species_proportional_cover	Dalea purpureum	float	NA	Proportional cover for the Genus_species column name was calculated as each species' cover divided by total cover of all species per plot (m2/m2).
data.dataset_species_proportional_cover	Desmanthus illinoensis	float	NA	Proportional cover for the Genus_species column name was calculated as each species' cover divided by total cover of all species per plot (m2/m2).
data.dataset_species_proportional_cover	Desmodium canadensis	float	NA	Proportional cover for the Genus_species column name was calculated as each species' cover divided by total cover of all species per plot (m2/m2).
data.dataset_species_proportional_cover	Echinacea pallida	float	NA	Proportional cover for the Genus_species column name was calculated as each species' cover divided by total cover of all species per plot (m2/m2).
data.dataset_species_proportional_cover	Echinochloa crusgalli	float	NA	Proportional cover for the Genus_species column name was calculated as each species' cover divided by total cover of all species per plot (m2/m2).
data.dataset_species_proportional_cover	Elymus canadensis	float	NA	Proportional cover for the Genus_species column name was calculated as each species' cover divided by total cover of all species per plot (m2/m2).
data.dataset_species_proportional_cover	Eryngium yuccifolium	float	NA	Proportional cover for the Genus_species column name was calculated as each species' cover divided by total cover of all species per plot (m2/m2).
data.dataset_species_proportional_cover	Euphorbia dentata	float	NA	Proportional cover for the Genus_species column name was calculated as each species' cover divided by total cover of all species per plot (m2/m2).
data.dataset_species_proportional_cover	Helianthis laetiflorus	float	NA	Proportional cover for the Genus_species column name was calculated as each species' cover divided by total cover of all species per plot (m2/m2).
data.dataset_species_proportional_cover	Helianthis maximilliani	float	NA	Proportional cover for the Genus_species column name was calculated as each species' cover divided by total cover of all species per plot (m2/m2).
data.dataset_species_proportional_cover	Heliopsis helianthoides	float	NA	Proportional cover for the Genus_species column name was calculated as each species' cover divided by total cover of all species per plot (m2/m2).
data.dataset_species_proportional_cover	Lactuca serriola	float	NA	Proportional cover for the Genus_species column name was calculated as each species' cover divided by total cover of all species per plot (m2/m2).
data.dataset_species_proportional_cover	Lespedeza capitata	float	NA	Proportional cover for the Genus_species column name was calculated as each species' cover divided by total cover of all species per plot (m2/m2).
data.dataset_species_proportional_cover	Liatris pycnostachya	float	NA	Proportional cover for the Genus_species column name was calculated as each species' cover divided by total cover of all species per plot (m2/m2).
data.dataset_species_proportional_cover	Medicago lupulina	float	NA	Proportional cover for the Genus_species column name was calculated as each species' cover divided by total cover of all species per plot (m2/m2).
data.dataset_species_proportional_cover	Melilotus albus	float	NA	Proportional cover for the Genus_species column name was calculated as each species' cover divided by total cover of all species per plot (m2/m2).
data.dataset_species_proportional_cover	Melilotus officinalis	float	NA	Proportional cover for the Genus_species column name was calculated as each species' cover divided by total cover of all species per plot (m2/m2).
data.dataset_species_proportional_cover	Monarda fistulosa	float	NA	Proportional cover for the Genus_species column name was calculated as each species' cover divided by total cover of all species per plot (m2/m2).
data.dataset_species_proportional_cover	Muhlenbergia frondosa	float	NA	Proportional cover for the Genus_species column name was calculated as each species' cover divided by total cover of all species per plot (m2/m2).
data.dataset_species_proportional_cover	Oxalis stricta	float	NA	Proportional cover for the Genus_species column name was calculated as each species' cover divided by total cover of all species per plot (m2/m2).
data.dataset_species_proportional_cover	Panicum virgatum	float	NA	Proportional cover for the Genus_species column name was calculated as each species' cover divided by total cover of all species per plot (m2/m2).
data.dataset_species_proportional_cover	Phleum pratense	float	NA	Proportional cover for the Genus_species column name was calculated as each species' cover divided by total cover of all species per plot (m2/m2).
data.dataset_species_proportional_cover	Physalis subglabrata	float	NA	Proportional cover for the Genus_species column name was calculated as each species' cover divided by total cover of all species per plot (m2/m2).
data.dataset_species_proportional_cover	Poa pratensis	float	NA	Proportional cover for the Genus_species column name was calculated as each species' cover divided by total cover of all species per plot (m2/m2).
data.dataset_species_proportional_cover	Populus deltoides	float	NA	Proportional cover for the Genus_species column name was calculated as each species' cover divided by total cover of all species per plot (m2/m2).
data.dataset_species_proportional_cover	Pycnanthemum virginianum	float	NA	Proportional cover for the Genus_species column name was calculated as each species' cover divided by total cover of all species per plot (m2/m2).
data.dataset_species_proportional_cover	Ratibida pinnata	float	NA	Proportional cover for the Genus_species column name was calculated as each species' cover divided by total cover of all species per plot (m2/m2).
data.dataset_species_proportional_cover	Rudbeckia hirta	float	NA	Proportional cover for the Genus_species column name was calculated as each species' cover divided by total cover of all species per plot (m2/m2).
data.dataset_species_proportional_cover	Schizachyrium scoparium	float	NA	Proportional cover for the Genus_species column name was calculated as each species' cover divided by total cover of all species per plot (m2/m2).
data.dataset_species_proportional_cover	Setaria faberi	float	NA	Proportional cover for the Genus_species column name was calculated as each species' cover divided by total cover of all species per plot (m2/m2).
data.dataset_species_proportional_cover	Silphium integrifolium	float	NA	Proportional cover for the Genus_species column name was calculated as each species' cover divided by total cover of all species per plot (m2/m2).
data.dataset_species_proportional_cover	Silphium lactinatum	float	NA	Proportional cover for the Genus_species column name was calculated as each species' cover divided by total cover of all species per plot (m2/m2).
data.dataset_species_proportional_cover	Solanum ptycanthum	float	NA	Proportional cover for the Genus_species column name was calculated as each species' cover divided by total cover of all species per plot (m2/m2).
data.dataset_species_proportional_cover	Solidago canadensis	float	NA	Proportional cover for the Genus_species column name was calculated as each species' cover divided by total cover of all species per plot (m2/m2).
data.dataset_species_proportional_cover	Solidago rigida	float	NA	Proportional cover for the Genus_species column name was calculated as each species' cover divided by total cover of all species per plot (m2/m2).
data.dataset_species_proportional_cover	Sonchus asper	float	NA	Proportional cover for the Genus_species column name was calculated as each species' cover divided by total cover of all species per plot (m2/m2).
data.dataset_species_proportional_cover	Sorghastrum nutans	float	NA	Proportional cover for the Genus_species column name was calculated as each species' cover divided by total cover of all species per plot (m2/m2).
data.dataset_species_proportional_cover	Sporobolus heterolepis	float	NA	Proportional cover for the Genus_species column name was calculated as each species' cover divided by total cover of all species per plot (m2/m2).
data.dataset_species_proportional_cover	Taraxacum officinale	float	NA	Proportional cover for the Genus_species column name was calculated as each species' cover divided by total cover of all species per plot (m2/m2).
data.dataset_species_proportional_cover	Tradescantia ohiensis	float	NA	Proportional cover for the Genus_species column name was calculated as each species' cover divided by total cover of all species per plot (m2/m2).
data.dataset_species_proportional_cover	Treatment	string	NA	Treatments were unfertilized prairie which received no N, P or K (low-fertility) and fertilized prarie which received N,P, K (high-fertility). For more information see article.
data.dataset_species_proportional_cover	Trifolium hybridum	float	NA	Proportional cover for the Genus_species column name was calculated as each species' cover divided by total cover of all species per plot (m2/m2).
data.dataset_species_proportional_cover	Trifolium pratense	float	NA	Proportional cover for the Genus_species column name was calculated as each species' cover divided by total cover of all species per plot (m2/m2).
data.dataset_species_proportional_cover	Vernonia fasciculata	float	NA	Proportional cover for the Genus_species column name was calculated as each species' cover divided by total cover of all species per plot (m2/m2).
data.dataset_species_proportional_cover	Veronicastrum virginicum	float	NA	Proportional cover for the Genus_species column name was calculated as each species' cover divided by total cover of all species per plot (m2/m2).
data.dataset_species_proportional_cover	Year	integer	number	Years in which measurements were made.
data.dataset_species_proportional_cover	Year Block Treatment	string	NA	Combination of the Year, Block and Treatment variables used for processing species matrixes in R.
data.dataset_species_proportional_cover	dataset species proportional cover pkey	integer	dimensionless	A unique primary key for this table.