Supplement 1. Cheatgrass demographic data and the R code to perform analyses.

File List
seedData.csv (MD5: 1046a13d7dc78e8de7ff15ed1569c743)

es.csv (MD5: 83f92d3db02c919782c024c23f02476c)

analyses.r (MD5: c2975e34a5540cf99e285a98d83bf817)

Description
This supplement provides the data and the R code to perform the analyses described in the methods section. The data is contained in seedData.csv and es.csv. The file seedData.csv contains data on seed production, es.csv contains data on emergence and survival. analyses.r is the code to perform analyses. For clarity, we divided the code in five sections: (1) models of seed production in unplanted quadrats; (2) create complete demographic data sets; (3) lambda models; (4) vital rates models; (6) LTRE analyses. In the first section, we use data from seedData.csv to create treatment specific means of seed production in unplanted quadrats. In the second section, we subtract these means to the seed production of planted quadrats. We use the resulting data set in sections three, four, and five to fit the mixed-effect models and to perform the LTRE analyses.

Here we present the number, name and description of each column in the two data frames, seedData.csv and es.csv.

Metadata seedData.csv

1.Plot

Definition: Number identifying each experimental plots.

2. Removal
Definition: A letter indicating whether the plot was subjected to vegetation removal ("R") or not ("N").

3. Warming
Definition: A letter indicating whether the plot was subjected to warming ("W") or not ("C").

4. Ecotype
Definition: A word indicating whether the quadrat was planted with cheatgrass seeds collected at low ("low"), mid ("mid") or ("high") elevations. Moreover, every plot also contains a quadrat that has not been planted ("unplanted").

5. Site
Definition: A word indicating whether the plots are located at the low ("low"), mid ("mid") or ("high") elevation site.

6. Year
Definition: A number indicating whether the data refers to seed collected in June 2010 or 2011.

7. Seeds
Definition: A number reporting the estimated number of seeds produced in each quadrat.

Metadata es.csv

Numbers refer to the column number.

1.Plot
Definition: Number identifying each experimental plots.

2. Removal
Definition: A letter indicating whether the plot was subjected to vegetation removal ("R") or not ("N").

3. Warming
Definition: A letter indicating whether the plot was subjected to warming ("W") or not ("C").

4. Ecotype
Definition: A word indicating whether the quadrat was planted with cheatgrass seeds collected at low ("low"), mid ("mid") or ("high") elevations. Moreover, every plot also has a quadrat that has not been planted ("unplanted").

5. Site
Definition: A word indicating whether the plots are located at the low ("low"), mid ("mid") or ("high") elevation site.

6. Year
Definition: A number indicating whether the data refers to the growing season 2009-2010 ("2010") or 2010-2011 ("2011").

7. e
Definition: A number reporting the proportion of planted cheatgrass that emerged during the growing season.

8. s
Definition: A number reporting the proportion of emerged cheatgrass that survived to seed set.