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  • Plant species percent cover data: Seed Addition in Lawrence Strips
  • Tilman, David
  • 2013-12-27
  • Description of Research Goals and Accomplishments: This experiment will test the affect of various species of seed addition and differing amounts of them on a newly abandoned area of the Lawrence strips. This experiment was set up in the northern end of the Lawrence strips after it was newly disked (no standing vegetation). There are 60 plots, each 3m x 3m with a .5m walkway between them. There are fifteen treatments, with 4 replicates of each treatment. The treatments are as follows, with the species of seed(s) and the amount added per plot: l. Ambrosia artemisiifolia, 90g 2. Agropyron repens, 67g 3. Poa pratensis, 45g 4. Schizachyrium scoparium, 67g 5. Andropogon gerardi, 67g 6. Mix of forbs, 50g 7. Mix 2 (see below) 8. Ambrosia artemisiifolia, 9g 9. Agropyron repens, 6.7g lO. Poa pratensis, 4.5g ll. Schizachyrium scoparium, 6.7g 12. Andropogon gerardi, 6.7g 13. Mix of forbs, 5g 14. Mix 3 (see below) 15. control-no seeds added Mix of forbs contains seeds of Achillea millefolium, Agastache foeniculum, Amorpha canescens, Aster azureus, Coreopsis palmata, Heliopsis helianthoides, Lespedeza capitata, Liatris aspera, Monarda fistulosa, Petalostemum candidum, Petalostemum purpureum, Rosa arkansana, Rudbeckia hirta, Solidago nemoralis, Solidago ptarmicoides, Solidago rigida, Verbena stricta and Zizia aurea. Mix 2 contains 50g Mix of forbs + 67g Schizachyrium scoparium + 67g Andropogon gerardi + 45g Poa pratensis + 90g Agropyron repens per plot. Mix 3 contains 5g Mix of forbs * 6.7g Schizachyrium scoparium + 6.7g Andropogon gerardi + 5g Poa pratensis + 9g Agropyron repens per plot. The seeds were added to the plots on June 14, 1993.
  • N: 45.44138      S: 45.384865      E: -93.16289      W: -93.22445
  • Code of Ethics and Rules for Use of Cedar Creek LTER and Related Data As a condition for access to data provided by researchers of the Cedar Creek LTER, I agree to abide by the following code of ethics. A. I agree to notify the Cedar Creek LTER scientists who gathered data if I would like to use those data in any publication. I acknowledge that these data were gathered by Cedar Creek scientists because they had already perceived the importance of these data for a variety of scientific and societal issues. I will provide them with formal recognition that, at their discretion, may include co-authorship or acknowledgements on publications. B. I realize that the researchers who gathered these data may be using them for scientific analyses, papers or publications that are currently planned or in preparation, and that such activities have precedence over any that I might wish to prepare. In this case, my preparation of any work may be delayed, at the option of the Cedar Creek researchers involved, until their work is completed. C. Because it may be possible to misinterpret a data set if it is taken out of context, I will seek the assistance and opinion of those Cedar Creek researchers involved in the design of a study and the collection of the data as I analyze the data. Moreover, I realize that this computer data set is not complete, and it may contain errors. The complete data set includes extensive written documentation, which should be referenced to reduce the chance of errors in data and errors of interpretation.
  • doi:10.6073/pasta/5cb38de005537cfb3418ea12fef1749a
  • https://pasta.lternet.edu/package/eml/knb-lter-cdr/266/1
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