Table 2. The different datasets used with description, mean leaf size, and LMA.
Differences between Seifhennersdorf and Suletice-Berand in leaf size and LMA are indicated by <0.05 p-values (Mann-Whitney test).
| Data | n | Mean leaf size (mm2) | Mean LMA (g/m2) |
|---|---|---|---|
| Dataset 1 Whole sample of leaves. |
6,284 (Sf: 4935, SuBe: 1349) |
– | – |
| Dataset 2 Leaves with ~70% of lamina preserved. |
1,976 (Sf: 1556, SuBe: 420) |
– | – |
| Dataset 3 All leaves having quantitative trait measurements. |
800 (Sf: 400, SuBe: 400) |
Sf = 1262.40 (SD = 963.10) SuBe: 766.73 (SD = 786.24) W = 111396, p-value < 2.2e−16 |
Sf = 84.92 (SD = 23.34; NAs = 225) SuBe = 104.84 (SD = 29.97; NAs = 257) W = 7397, p-value = 3.582e−10 |
| Dataset 4* All leaves from Dataset 3 minus specimens with an outlier (size/LMA), of rare fossil-species and TCTs (<5), and with incomplete cases. |
228 (Sf: 124, SuBe: 104) |
Sf = 1104.40 (SD = 730.06) SuBe = 452.90 (SD = 476.26) W = 10626, p-value < 2.2e−16 |
Sf = 82.92 (SD = 19.64) SuBe = 102.70 (SD = 24.93) W = 3425, p-value = 1.11e−09 |
| Dataset 5* Contains specimens of Dataset 4 with measured LMA and additional specimens with simulated LMA. |
506 (Sf: 244, SuBe: 262) |
Sf = 1064.28 (SD = 704.95) SuBe = 526.27 (SD = 437.16) W = 50377, p-value < 2.2e−16 |
Sf = 81.62 (SD = 20.91) SuBe = 103.78 (SD = 24.02) W = 15979, p-value < 2.2e−16 |
Notes:
*
Datasets 4 and 5, the two subsets of Dataset 3, are used for multivariate analyses (see Material & Methods). They contain the following data: leaf size, length/width ratio, length, width, LMA (calculated), TCT (specimen-based, taxonomy-based, and combined approach), area index, phenology, and growth form.
n, Number of leaves; SD, Standard deviation; LMA, Leaf mass per area; Sf, Seifhennersdorf assemblage; SuBe, Suletice-Berand assemblage; W, Statistic of the Mann-Whitney-Wilcoxon test; NAs, Non-available values.