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Mechanismobservedoriginal resultsimulated

Claim · model-written summary

Tradeoffs with nitrogen use efficiency can select against fixation.

Taxon
treese1
Outcome
select against N fixatione0
Qualifier
N use efficiency (NUE)e0

Verbatim

e0

“N use efficiency (NUE) can select against N fixation”

✓ located verbatim in the source · abstract, characters 542–594
t0

“nitrogen fixation”

✓ located verbatim in the source · title, characters 42–59
e1

“Symbiotic nitrogen (N) fixing trees”

✓ located verbatim in the source · abstract, characters 0–35

Title

Evolutionary tradeoffs can select against nitrogen fixation and thereby maintain nitrogen limitation

Duncan N. L. Menge; Simon A. Levin; Lars O. Hedin Proceedings of the National Academy of Sciences 2008. doi:10.1073/pnas.0711411105

Other claims from this paper (7)
Observationobservedoriginal resultmeasured

Claim · model-written summary

Scrub trees had lower nitrogen-use efficiency than fringe trees.

Taxon
Avicennia marinaAvicennia marinat0
Outcome
nitrogen-use efficiencye0
Direction
lowere0
Comparator
fringe treese0

Verbatim

e0

“Scrub trees maintained greater CO(2) assimilation per unit water transpired (water-use efficiency, WUE) and had lower nitrogen-use efficiency (NUE; CO(2) assimilation rate per unit leaf nitrogen) than fringe trees”

✓ located verbatim in the source · abstract, characters 535–748
t0

“grey mangrove, Avicennia marina”

✓ located verbatim in the source · abstract, characters 94–125

Title

Nitrogen fertilization enhances water-use efficiency in a saline environment

KATHERINE C. MARTIN; DAN BRUHN; CATHERINE E. LOVELOCK; et al. Plant Cell & Environment 2009. doi:10.1111/j.1365-3040.2009.02072.x

Other claims from this paper (8)
Associationobservedoriginal resultmeasured

Claim · model-written summary

Photosynthetic nitrogen-use efficiency decreased with latitude in Populus balsamifera.

Taxon
Populus balsamifera L.Populus balsamiferat0
Treatment
latitudee0
Outcome
photosynthetic nitrogen-use efficiencye0
Direction
decreasede0

Verbatim

t0

“balsam poplar (Populus balsamifera L.)”

✓ located verbatim in the source · title, characters 136–174
e0

“Water-use efficiency as indicated by both gas exchange and delta(13)C increased with latitude, whereas photosynthetic nitrogen-use efficiency decreased”

✓ located verbatim in the source · abstract, characters 744–895

Title

Enhanced assimilation rate and water use efficiency with latitude through increased photosynthetic capacity and internal conductance in balsam poplar (Populus balsamifera L.)

RAJU Y. SOOLANAYAKANAHALLY; ROBERT D. GUY; SALIM N. SILIM; et al. Plant Cell & Environment 2009. doi:10.1111/j.1365-3040.2009.02042.x

Other claims from this paper (6)
Mechanismauthor interpretationoriginal resultmeasured

Claim · model-written summary

Higher nitrogen productivity was given as the reason for higher nitrogen use efficiency in the C(4) grass.

Taxon
Chloris virgataChloris virgatat0
Outcome
higher N-use efficiencye0
Qualifier
higher N productivitye0

Verbatim

e0

“The C(4) grass had higher N-use efficiency than the C(3) grass due to its higher N productivity, irrespective of the N treatment or competition.”

✓ located verbatim in the source · abstract, characters 1518–1662
t0

“Chloris virgata”

✓ located verbatim in the source · abstract, characters 532–547

Title

Plant Nitrogen Dynamics and Nitrogen-use Strategies under Altered Nitrogen Seasonality and Competition

Z. Yuan; W. Liu; S. Niu; et al. Annals of Botany 2007. doi:10.1093/aob/mcm178

Other claims from this paper (7)
Associationobservedoriginal resultmeasured

Claim · model-written summary

High total root uptake capacity was associated with low leaf nitrogen use efficiency.

Taxon
pasture grass speciest0
Organ / stage
leafe0
Outcome
leaf N use efficiencye0
Direction
lowe0
Qualifier
across speciese0

Verbatim

e0

“was associated across species to low leaf N use efficiency”

✓ located verbatim in the source · abstract, characters 1165–1223
t0

“pasture grass species”

✓ located verbatim in the source · title, characters 98–119

Title

Trade‐off between root nitrogen acquisition and shoot nitrogen utilization across 13 co‐occurring pasture grass species

Vincent Maire; Nicolas Gross; Laise Da Silveira Pontes; et al. Functional Ecology 2009. doi:10.1111/j.1365-2435.2009.01557.x

Other claims from this paper (7)
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Competition raised nitrogen use and resorption efficiency in mixtures relative to monoculture for both grass types.

Taxon
Leymus chinensisLeymus chinensist0
Treatment
mixturee0
Outcome
N-use and resorption efficiencye0
Direction
highere0
Comparator
monoculturee0

Verbatim

e0

“Interspecific competition influenced N-use and resorption efficiency in both the C(3) and C(4) species, with higher N-use and resorption efficiency in the mixture than in monoculture.”

✓ located verbatim in the source · abstract, characters 1334–1517
t0

“Leymus chinensis and C. virgata”

✓ located verbatim in the source · abstract, characters 573–604

Title

Plant Nitrogen Dynamics and Nitrogen-use Strategies under Altered Nitrogen Seasonality and Competition

Z. Yuan; W. Liu; S. Niu; et al. Annals of Botany 2007. doi:10.1093/aob/mcm178

Other claims from this paper (7)
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Nitrogen and phosphorus application increased seasonal rain-use efficiency when rainfall exceeded 300 mm.

Taxon
Rangelandt0
Treatment
Nitrogen and P applicatione0
Outcome
seasonal rain-use efficiencye0
Direction
increasede0
Qualifier
rainfall exceeded 300 mme0

Not reportedComparator

Verbatim

e0

“Nitrogen and P application increased seasonal rain-use efficiency when the rainfall exceeded 300 mm”

✓ located verbatim in the source · abstract, characters 886–985
t0

“Rangeland Production”

✓ located verbatim in the source · title, characters 25–45

Title

N and P Fertilization on Rangeland Production in Midwest Argentina

Juan C. Guevara; Carlos R. Stasi; Oscar R. Estevez; et al. Journal of Range Management 2000. doi:10.2307/4003752

Other claims from this paper (10)
Observationobservedoriginal resultmeasured

Claim · model-written summary

Nitrogen-use efficiency was greater in C(4) species, with marked variation between clades.

Taxon
speciese0
Material
C(4) speciese0
Outcome
nitrogen-use efficiencye0
Direction
greatere0
Qualifier
varying markedly between cladese0

Verbatim

e0

“Photosynthesis and nitrogen-use efficiency were also greater in C(4) species, varying markedly between clades.”

✓ located verbatim in the source · abstract, characters 732–842

Title

Ecophysiological traits in C 3 and C 4 grasses: a phylogenetically controlled screening experiment

Samuel H. Taylor; Stephen P. Hulme; Mark Rees; et al. New Phytologist 2009. doi:10.1111/j.1469-8137.2009.03102.x

Other claims from this paper (7)
Observationobservedoriginal resultmeasured

Claim · model-written summary

Tall grasses had high shoot nitrogen yield, root biomass, and leaf nitrogen use efficiency.

Taxon
pasture grass speciest0
Outcome
high shoot N yield, high root biomass and high leaf N use efficiencye0
Direction
highe0
Qualifier
Tall grassese0

Verbatim

e0

“Tall grasses were characterized by high shoot N yield, high root biomass and high leaf N use efficiency”

✓ located verbatim in the source · abstract, characters 1225–1328
t0

“pasture grass species”

✓ located verbatim in the source · title, characters 98–119

Title

Trade‐off between root nitrogen acquisition and shoot nitrogen utilization across 13 co‐occurring pasture grass species

Vincent Maire; Nicolas Gross; Laise Da Silveira Pontes; et al. Functional Ecology 2009. doi:10.1111/j.1365-2435.2009.01557.x

Other claims from this paper (7)
Observationobservedoriginal resultmeasured

Claim · model-written summary

R. ponticum had higher photosynthetic nitrogen-use efficiency than I. aquifolium.

Taxon
R. ponticumRhododendron ponticume0
Outcome
photosynthetic nitrogen use efficiencye0
Direction
highere0
Comparator
I. aquifoliume0

Verbatim

e0

“R. ponticum exhibited a higher photosynthetic nitrogen use efficiency and larger investment of nitrogen in chlorophyll than I. aquifolium”

✓ located verbatim in the source · abstract, characters 705–842

Title

Leaf‐level phenotypic variability and plasticity of invasive Rhododendron ponticum and non‐invasive Ilex aquifolium co‐occurring at two contrasting European sites

Ü. NIINEMETS; F. VALLADARES; R. CEULEMANS Plant Cell & Environment 2003. doi:10.1046/j.1365-3040.2003.01027.x

Other claims from this paper (10)

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