| dc.creator | Yáñez, Marco A. | |
| dc.creator | Espinoza, Sergio E | |
| dc.creator | Ovalle, Juan F. | |
| dc.creator | Magni, Carlos | |
| dc.creator | Martínez, Eduardo E. | |
| dc.date | 2024-04-16T19:27:32Z | |
| dc.date | 2024-04-16T19:27:32Z | |
| dc.date | 2024 | |
| dc.date.accessioned | 2024-05-02T20:32:27Z | |
| dc.date.available | 2024-05-02T20:32:27Z | |
| dc.identifier | http://repositorio.ucm.cl/handle/ucm/5327 | |
| dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/9275510 | |
| dc.description | Background: Nitrogen and water are important limiting factors to forest productivity. At the plant level, there is contrasting empirical evidence about the trade-off between water use efficiency (WUE) and nitrogen use efficiency (NUE).
Methods: A study was conducted on 3-year-old loblolly pine (Pinus taeda L.) trees sampled at two contrasting sites (Virginia Piedmont (VA) and North Carolina Coastal Plain (NC)) in the southeastern United States. We investigated the leaf-level relationship between water and nitrogen use efficiency (i.e., WUEins versus PNUE). Both parameters were measured in the fall, three years after outplanting.
Results: WUEins and PNUE were higher at VA than NC. At both sites, WUEins increased from August to November, while PNUE showed a consistent decline for the same period only at NC, with no clear pattern observed at VA. The Pearson’s coefficient of correlation (r) between WUEins and PNUE was negative (r=0.50) at VA in August, positive (r=0.77) at NC in October, and insignificant for the other measurement dates.
Conclusions: Regardless of the site, at the young stage of stand development, WUEins and PNUE were mostly uncoupled, although it can be speculated that a transient trade-off between these two variables can be expected depending on soil water rather than nitrogen availability. | |
| dc.language | en | |
| dc.rights | Atribución-NoComercial-SinDerivadas 3.0 Chile | |
| dc.rights | http://creativecommons.org/licenses/by-nc-nd/3.0/cl/ | |
| dc.source | New Zealand Journal of Forestry Science, 54, 5 | |
| dc.subject | Instantaneous water use efficiency | |
| dc.subject | Photosynthetic nitrogen use efficiency | |
| dc.subject | Loblolly pine | |
| dc.title | Relationship between photosynthetic-water and nitrogen use efficiencies in young Pinus taeda L. trees at two contrasting sites | |
| dc.type | Article | |
