Effects of elevated CO2 on competiton between native and invasive grasses

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Hager, Heather A.; Ryan, Geraldine D.; Newman, Jonathan A., 2020, "Effects of elevated CO2 on competiton between native and invasive grasses", https://doi.org/10.5683/SP2/GJ94P8, Borealis, V1, UNF:6:0/UqcZaHvMOg2fYbTphnxQ== [fileUNF]

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Description	We tested competitive outcomes for four native and four invasive perennial C3 and C4 grasses under ambient (390 ppm) and elevated (700 or 1000 ppm) CO2 concentrations in a closed-chamber greenhouse experiment with non-limiting water and nutrients, predicting that elevated CO2 would increase the competitive suppression of native grasses by invasive grasses. To test this, we determined the relative interaction intensity of biomass allocation for natives grown alone vs. those grown in native-invasive species pairs and measured photosynthetic traits that contribute to plant invasiveness and may be affected by elevated CO2 concentrations. We found no effect of CO2 for plant production measures of interaction intensity or for relative performance for most of the measured photosynthetic traits. In competition, invaders nearly always produced more biomass and tillers than natives, regardless of CO2 level. The results suggest that increasing CO2 concentration alone has little effect on grass competitive outcomes under controlled conditions.
Subject	Earth and Environmental Sciences
Keyword	biomass, carbon dioxide, climate change, CO2, competition, competitive effect, competitive response, grass, invasion, invasive, native, non-native, photosynthesis, photosynthetic traits, plant competition, relative interaction intensity, relative performance, specific leaf area, stomatal density, tiller production
Related Publication	Hager, H.A., Ryan, G.D., and Newman, J.A. 2020. Effects of elevated CO2 on competition between native and invasive grasses. Oecologia. 192: 1099–1110. doi: 10.1007/s00442-020-04636-6
Notes	NOTES ON BROWSING: Click on the "Tree" view to identify folder structure and related files. NOTES ON PRESERVATION: The original data files were multi-spreadsheet Excel workbooks. They are presented here as individual spreadsheets. In addition, the content of the workbooks have been exported into preservation-friendly formats and stored in the Preservation Files zip archive. NOTES ON USING THE DATA: The original publication (see Related Publication) and this data set should both be cited if these data are used; see the original publication for detailed methods.
License/Data Use Agreement	CC-BY 4.0

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	HagerEtAl_CO2Comp_ExtraData_Data.tab ExtraData/Tabular Data - 36.3 KB Published Mar 26, 2020 35 Downloads 60 Variables, 457 Observations UNF:6:1qdl+XsbcRodyMLKCPH1qg== Contains data from a few extra replicates that were planted (because it was unsure whether all the plants would grow) and these data were not included in the published analyses. Data	Access File File Access Public Download Options MS Excel Spreadsheet (Original File Format) Tab-Delimited RData Download Metadata Variable Metadata Data File Citation EndNote XML RIS BibTeX Explore Options Data Explorer
	HagerEtAl_CO2Comp_ExtraData_Metadata.tab ExtraData/Tabular Data - 2.5 KB Published Mar 26, 2020 30 Downloads 5 Variables, 27 Observations UNF:6:9CtYp4hPxccpY4fHbgbzjw== Data	Access File File Access Public Download Options MS Excel Spreadsheet (Original File Format) Tab-Delimited RData Download Metadata Variable Metadata Data File Citation EndNote XML RIS BibTeX Explore Options Data Explorer
	HagerEtAl_CO2Comp_FinalData_AllData.tab FinalData/Tabular Data - 126.1 KB Published Mar 26, 2020 29 Downloads 78 Variables, 144 Observations UNF:6:RyNiEW3f61AnQLp5G2Xh/A== Contains all the data used in the published analyses. Data	Access File File Access Public Download Options MS Excel Spreadsheet (Original File Format) Tab-Delimited RData Download Metadata Variable Metadata Data File Citation EndNote XML RIS BibTeX Explore Options Data Explorer
	HagerEtAl_CO2Comp_FinalData_Metadata.tab FinalData/Tabular Data - 8.0 KB Published Mar 26, 2020 32 Downloads 2 Variables, 77 Observations UNF:6:kmBh/sEbA6eRyKAQ4jt2og== Data	Access File File Access Public Download Options MS Excel Spreadsheet (Original File Format) Tab-Delimited RData Download Metadata Variable Metadata Data File Citation EndNote XML RIS BibTeX Explore Options Data Explorer
	PreservationFiles.zip ZIP Archive - 1.0 MB Published Mar 26, 2020 30 Downloads MD5: ae1eafc2ecb5e0fcc805fc1bf77836f0 For preservation purposes, 'flat file' versions of the original data files have been created. Note that for each Excel spreadsheet, a single flat file in comma separated values (.CSV) format has been created. In addition, if a spreadsheet included formulas, the formulas have been exported into a text (.TXT) file. If a spreadsheet included charts and figures, this information has been exported into text (.TXT) and image (.PNG), files. Finally, there is a visual representation (HTML Snapshot) of each spreadsheet to show the original format including colour coding, graphs, charts and figures. Data	Preview "PreservationFiles.zip" Access File File Access Public Download Options ZIP Archive Download Metadata Data File Citation EndNote XML RIS BibTeX

Citation Metadata

Persistent Identifier	doi:10.5683/SP2/GJ94P8
Publication Date	2020-03-26
Title	Effects of elevated CO2 on competiton between native and invasive grasses
Author	Hager, Heather A. (Department of Integrative Biology, College of Biological Science,. University of Guelph and Department of Biology, Wilfrid Laurier University.) Ryan, Geraldine D. Newman, Jonathan A. (Department of Biology, Wilfrid Laurier University.)
Point of Contact	Use email button above to contact. Hager, Heather A. (Department of Integrative Biology. College of Biological Sciences. University of Guelph.) Ryan, Geraldine D. Newman, Jonathan A. (Department of Biology, Wilfrid Laurier University.)
Description	We tested competitive outcomes for four native and four invasive perennial C3 and C4 grasses under ambient (390 ppm) and elevated (700 or 1000 ppm) CO2 concentrations in a closed-chamber greenhouse experiment with non-limiting water and nutrients, predicting that elevated CO2 would increase the competitive suppression of native grasses by invasive grasses. To test this, we determined the relative interaction intensity of biomass allocation for natives grown alone vs. those grown in native-invasive species pairs and measured photosynthetic traits that contribute to plant invasiveness and may be affected by elevated CO2 concentrations. We found no effect of CO2 for plant production measures of interaction intensity or for relative performance for most of the measured photosynthetic traits. In competition, invaders nearly always produced more biomass and tillers than natives, regardless of CO2 level. The results suggest that increasing CO2 concentration alone has little effect on grass competitive outcomes under controlled conditions.
Subject	Earth and Environmental Sciences
Keyword	biomass carbon dioxide climate change CO2 competition competitive effect competitive response grass invasion invasive native non-native photosynthesis photosynthetic traits plant competition relative interaction intensity relative performance specific leaf area stomatal density tiller production
Topic Classification	climate change (AGROVOC) http://aims.fao.org/aos/agrovoc/c_1666 grasses (AGROVOC) http://aims.fao.org/aos/agrovoc/c_3362 invasive species (AGROVOC) http://aims.fao.org/aos/agrovoc/c_49865
Related Publication	Hager, H.A., Ryan, G.D., and Newman, J.A. 2020. Effects of elevated CO2 on competition between native and invasive grasses. Oecologia. 192: 1099–1110. doi: 10.1007/s00442-020-04636-6 https://doi.org/10.1007/s00442-020-04636-6
Notes	NOTES ON BROWSING: Click on the "Tree" view to identify folder structure and related files. NOTES ON PRESERVATION: The original data files were multi-spreadsheet Excel workbooks. They are presented here as individual spreadsheets. In addition, the content of the workbooks have been exported into preservation-friendly formats and stored in the Preservation Files zip archive. NOTES ON USING THE DATA: The original publication (see Related Publication) and this data set should both be cited if these data are used; see the original publication for detailed methods.
Language	English
Production Date	2014
Production Location	School of Environmental Science, University of Guelph, Guelph, Ontario, Canada
Funding Information	Natural Sciences and Engineering Research Council of Canada Ontario Ministry of Food, Agriculture, and Rural Affairs Mitacs J.D. Webster Postdoctoral Fellowship
Distributor	Agri-Environmental Research Data Repository (University of Guelph) (AERDR)
Depositor	Hager, Heather A.
Deposit Date	2020-03-24
Time Period	Start Date: 2014 ; End Date: 2014
Date of Collection	Start Date: 2014 ; End Date: 2014
Data Type	experimental
Software	JMP, Version: 13
Related Material	Sampling methods are described in HA Hager, GD Ryan, JA Newman. 2020. Effects of elevated CO2 on competition between native and invasive grasses. Oecologia. 192: 1099–1110.

Geospatial Metadata

Geographic Coverage	Canada, Ontario, South-central Ontario

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Data Collector	Hager, Heather A.
Frequency	end of experiment (14 wk post-germination)

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