Claim · model-written summary
Increased N availability strongly decreased plant and community N uptake efficiency.
- Taxon
- plantt0
- Treatment
- Increased N availabilitye5
- Outcome
- plant and community N uptake efficiencye5
- Direction
- decreasede5
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier
Verbatim
t0“Scaling plant nitrogen use”
e5“Increased N availability strongly decreased plant and community N uptake efficiency”
Title
Scaling plant nitrogen use and uptake efficiencies in response to nutrient addition in peatlands
Colleen M. Iversen; Scott D. Bridgham; Laurie E. Kellogg Ecology 2010. doi:10.1890/09-0064.1
Other claims from this paper (10)
- Intervention effect N and P addition generally increased aboveground production and N uptake.
- Observation P availability strongly affected the way plants took up and used N.
- Observation Nitrogen use efficiency response to nutrient addition was not straightforward.
- Observation Nitrogen use efficiency differed between leaf and woody tissue, among species, and across the peatland gradient.
- Mechanism Plants and communities were adapted to maximize either N productivity or N residence time, but not both concurrently.
- Intervention effect Increased P availability increased N uptake efficiency, particularly in a nitrogen-fixing shrub.
- Observation N uptake efficiency was more important than NUE in controlling overall plant community response to soil N availability.
- Observation Above- and belowground community N uptake efficiencies responded to nutrient addition in a similar manner.
- Observation Plants respond to nutrient availability at multiple biological scales.
- Recommendation N uptake efficiency may be a more representative measurement of plant responses to nutrient availability gradients than plant NUE.