Table 1.
Drought and Land-Use Effects on Phytomass Parameters
| Campaign | Weeks after rewetting | Treatment | Land use | Treatment * land use | |
|---|---|---|---|---|---|
| Biomass | Resistance | 0 | *** | n.s. | * |
| Recovery 1 | 3.5 | *** | n.s. | n.s. | |
| Recovery 2 | 8 | n.s. | n.s. | n.s. | |
| Necromass | Resistance | 0 | * | n.s. | n.s. |
| Recovery 1 | 3.5 | n.s. | n.s. | * | |
| Recovery 2 | 8 | n.s. | n.s. | n.s. | |
| Phytomass | Resistance | 0 | *** | n.s. | * |
| Recovery 1 | 3.5 | *** | n.s. | n.s. | |
| Recovery 2 | 8 | n.s. | n.s. | n.s. | |
| LAI | Resistance | 0 | *** | *** | ** |
| Recovery 1 | 3.5 | * | (*) | n.s. | |
| Recovery 2 | 8 | * | *** | n.s. | |
| Biomass of forbs | Resistance | 0 | n.s. | ** | * |
| Recovery 1 | 3.5 | ** | ** | * | |
| Recovery 2 | 8 | * | ** | * | |
| Biomass of grasses | Resistance | 0 | *** | n.s. | n.s. |
| Recovery 1 | 3.5 | n.s. | n.s. | n.s. | |
| Recovery 2 | 8 | n.s. | (*) | n.s. | |
| LNC | Resistance | 0 | n.s. | n.s. | |
| Recovery 1 | 3.5 | *** | (*) | n.s. | |
| Recovery 2 | 8 | * | n.s. | (*) | |
| δ15NNA | Resistance | 0 | n.s. | *** | n.s. |
| Recovery 2 | 8 | n.s. | *** | n.s. |
Results of permutational ANOVA testing overall treatment effect, land-use effect and their interaction on different phytomass parameters. Biomass = living phytomass; Necromass = senescent phytomass; LAI = leaf area index; LNC = leaf nitrogen concentration; δ15N NA = natural abundance nitrogen isotope ratio of leaves. Resistance = 1 July, peak drought, Recovery 1 = 24 July, Recovery 2 = 22 August. Stars indicate the significance level: *** < 0.001 < ** < 0.01 < * < 0.05 < (*) < 0.1