Table 2.
Responses to understory light variation with 95% CI (in parenthesis) and sample size (n) for all species combined, and for dry- and wet-distribution species separately, in the (a) wet, (b) moist, (c) water-supplemented, dry site, and (d) unwatered, dry site
| Distribution | a. Wet1 | b. Moist (W)2 | c. Dry (W) | d. Dry (C) | ||||
|---|---|---|---|---|---|---|---|---|
| CI | n | CI | n | CI | n | CI | n | |
| NewLfPr | ||||||||
| All | 1.93 (0.97–2.89) | 422 | 3.74 (2.80–4.67) | 468 | 0.87 (−0.09 to 1.83) | 235 | −0.15 (−0.62 to 0.32) | 224 |
| Dry | 1.06 (0.01–2.11) | 2.88 (1.76–4.00) | 0.41 (−0.62 to 1.45) | 0.07 (−0.43 to 0.58) | ||||
| Wet | 2.79 (1.41–4.16) | 4.55 (3.17–5.94) | 3.49 (1.10–5.87) | −1.50 (−2.72 to −0.27) | ||||
| NetLfGr | ||||||||
| All | 1.76 (0.58–2.93) | 417 | 2.50 (1.50–3.51) | 468 | 2.23 (0.50–3.95) | 234 | −0.36 (−1.33 to 0.60) | 224 |
| Dry | 1.13 (−0.25 to 2.53) | 2.62 (1.28–3.96) | 1.32 (−0.88 to 3.52) | 0.49 (−0.66 to 1.66) | ||||
| Wet | 3.16 (1.02–5.30) | 2.26 (0.64–3.87) | 3.61 (0.86–6.35) | −2.05 (−3.69 to −0.41) | ||||
| StmHtGr | ||||||||
| All | 0.11 (−0.04 to 0.26) | 406 | 0.20 (0.02–0.38) | 467 | 0.15 (0.04–0.26) | 201 | 0.00 (−0.05 to 0.05) | 190 |
| Dry | 0.02 (−0.18 to 0.24) | 0.06 (−0.10 to 0.23) | 0.10 (−0.02 to 0.22) | 0.03 (−0.02 to 0.09) | ||||
| Wet | 0.19 (−0.01 to 0.41) | 0.34 (0.17–0.51) | 0.21 (0.06–0.36) | −0.03 (−0.11 to 0.03) | ||||
| Mortality | ||||||||
| All | 0.16 (0.03–0.86) | 463 | 0.51 (0.24–1.11) | 499 | 0.22 (0.04–1.30) | 250 | 2.97 (1.47–6.03) | 231 |
| Dry | 0.19 (0.02–1.71) | 0.38 (0.12–1.20) | 0.36 (0.03–4.48) | 1.41 (0.45–4.47) | ||||
| Wet | 0.12 (0.01–1.73) | 0.65 (0.23–1.90) | 0.15 (0.01–1.69) | 4.94 (2.00–12.24) | ||||
Only seedlings outside exclusion cages were analyzed at all sites. The growth responses are the slopes of New Leaf Production, Net Leaf Growth (NewLfPr, NetLfGr, both in cm2/month), and Stem Height Growth (StmHtGr, in mm/month) as a function of light from the linear mixed-effects models. The mortality responses are the Hazard Ratios from Cox models (see ‘‘Materials and methods’’). Responses significantly different from zero (or from 1.0 for mortality) at P < 0.05 are in bold
1In the wet site, the water treatments were pooled
2In the moist site, all plots were watered during the dry season and there were no herbivore exclusion cages