Search claims · PlantClaims

Associationobservedoriginal resultmeasured

Claim · model-written summary

Measured and model-predicted PAN fluxes were offset but correlated.

Taxon: plantt0
Outcome: Measured and model‐predicted PAN fluxese0
Comparator: model‐predicted PAN fluxese0

Not reportedDirection

Verbatim

e0
“Measured and model‐predicted PAN fluxes were offset, but correlated”
✓ located verbatim in the source · abstract, characters 1361–1428

t0
“plant leaves”
✓ located verbatim in the source · title, characters 50–62

Title

Gaseous fluxes of peroxyacetyl nitrate (PAN) into plant leaves

T. A. TEKLEMARIAM; J. P. SPARKS Plant Cell & Environment 2004. doi:10.1111/j.1365-3040.2004.01220.x

Other claims from this paper (9)

Association PAN flux related linearly to ambient PAN mixing ratio in all species.
Observation Measured PAN flux varied from 11 to 24 pmol m −2 s −1 among species.
Observation Measured PAN flux was 12–48% of flux predicted from modeled stomatal conductance.
Mechanism The flux comparison suggests mesophyll resistance to PAN uptake.
Intervention effect Brief PAN exposure did not affect photosynthesis, transpiration or water-vapor conductance.
Intervention effect Increasing stomatal resistance caused PAN uptake to drop.
Intervention effect Varying leaf nitrogen did not appear to influence PAN uptake.
Intervention effect Varying total leaf ascorbate did not appear to influence PAN uptake.
Method / resource Authors infer PAN flux could be estimated with established stomatal conductance algorithms.

Method / resourceobservedoriginal resultmeasured

Claim · model-written summary

BEIS2 and BEIS2.1 predicted fluxes within 10 to 50% of observed fluxes.

Outcome: Fluxes predicted by recent versionse0
Value: 10 to 50%e0
Comparator: observed fluxese0

Verbatim

e0
“Fluxes predicted by recent versions (BEIS2, BEIS2.1) of a biogenic emission model were within 10 to 50% of observed fluxes”
✓ located verbatim in the source · abstract, characters 1668–1790

Title

Leaf, branch, stand and landscape scale measurements of volatile organic compound fluxes from U.S. woodlands

A. Guenther; J. Greenberg; P. Harley; et al. Tree Physiology 1996. doi:10.1093/treephys/16.1-2.17

Other claims from this paper (18)

Observation Branch enclosures of woodland plants revealed 78 VOCs.
Observation Hexenol derivatives were the most commonly observed oxygenated compounds in woodland branch emissions.
Observation Albizia showed high isoprene emission rates.
Observation Chusqua showed high isoprene emission rates.
Observation Mahonia showed high isoprene emission rates.
Observation Atriplex showed high monoterpene emission rates.
Observation Chrysthamnus showed high monoterpene emission rates.
Observation Sorbus showed high monoterpene emission rates.
Observation Measurements on 34 additional species confirmed previous VOC emission results.
Observation Leaf enclosure isoprene emission rates from Quercus were substantially higher than the rates used in existing emission models.
Method / resource Model predictions of diurnal isoprene flux variations were within ±35% of observed variations.
Method / resource A 60 min time resolution is reasonable for biogenic emission models.
Observation Average daytime stand-scale flux over a shrub oak stand was 1.3 mg C m(-2) h(-1).
Observation Average daytime stand-scale flux over a mixed forest stand was 1.5-2.5 mg C m(-2) h(-1).
Observation Morning, evening and nighttime fluxes from woodlands were less than 0.1 mg C m(-2) h(-1).
Observation Average daytime landscape-scale flux over a shrub oak-aspen and rangeland landscape was about 3 mg C m(-2) h(-1).
Observation Average daytime landscape-scale flux over a deciduous forest landscape was about 7 mg C m(-2) h(-1).
Method / resource Fluxes predicted by BEIS2 versions were about 300% higher than those of the previous BEIS model.

Method / resourceobservedoriginal resultsimulated

Claim · model-written summary

Predicted isoprene fluxes agreed among canopy models within about 20%.

Outcome: predicted fluxese0
Value: approximately ±20%e0
Comparator: modelse0

Not reportedTaxon

Verbatim

e0
“predicted fluxes were consistent among the models to within approximately ±20%”
✓ located verbatim in the source · abstract, characters 941–1019

Title

Evaluation of forest canopy models for estimating isoprene emissions

Brian Lamb; Thomas Pierce; Dennis Baldocchi; et al. Journal of Geophysical Research Atmospheres 1996. doi:10.1029/96jd00056

Other claims from this paper (5)

Method / resource Models overestimated mean observed flux by about twofold.
Method / resource Models overestimated maximum observed flux by 30 to 50%.
Method / resource Reducing the emission factor and biomass density by 20% gave predicted means about 20% above observations.
Method / resource That adjustment gave predicted maxima about 25% below observations.
Method / resource Direction-specific biomass density improved overall model performance.

Method / resourceobservedoriginal resultmeasured

Claim · model-written summary

Remote sensing energy fluxes closely matched measured fluxes and predicted air temperature at the system locations.

Outcome: remote sensing energy fluxese0
Comparator: measured fluxese0

Verbatim

e0
“The remote sensing energy fluxes closely matched the measured fluxes, predicting the correct air temperaturefor the system locations”
✓ located verbatim in the source · abstract, characters 1070–1202

Title

Obtaining Spatial Air Temperature from Airborne Radiometric Crop Canopy Temperature

Jose L. Chavez; Christopher M. U. Neale 2002 Chicago, IL July 28-31, 2002 2002. doi:10.13031/2013.10386

Other claims from this paper (8)

Observationobservedoriginal resultsimulated

Claim · model-written summary

Predicted assimilate fluxes per maize plant were generally normally distributed.

Taxon: MAIZEZea mayst0
Outcome: fluxes were generally normally distributede0

Verbatim

e0
“the fluxes were generally normally distributed”
✓ located verbatim in the source · abstract, characters 955–1001

t0
“INDIVIDUAL MAIZE PLANTS”
✓ located verbatim in the source · title, characters 72–95

Title

THE RELATIONSHIP BETWEEN FINAL YIELD AND PHOTOSYNTHESIS AT FLOWERING IN INDIVIDUAL MAIZE PLANTS

G. O. EDMEADES; T. B. DAYNARD Canadian Journal of Plant Science 1979. doi:10.4141/cjps79-097

Other claims from this paper (4)

Associationobservedoriginal resultsimulated

Claim · model-written summary

Predicted fluxes from biosynthesis alone were lower than empirical isoflavone levels in soybean seeds.

Taxon: SoybeanGlycine maxt0
Outcome: predicted fluxes from biosynthesis alonee3
Direction: lowere3
Comparator: empirical levelse3

Verbatim

t0
“Soybean Seeds”
✓ located verbatim in the source · title, characters 89–102

e3
“Although seeds could synthesize isoflavones on their own, the predicted fluxes from biosynthesis alone were lower than the empirical levels”
✓ located verbatim in the source · abstract, characters 1225–1364

Title

Contextualized Metabolic Modelling Revealed Factors Affecting Isoflavone Accumulation in Soybean Seeds

Carolina A. Contador; Ailin Liu; Ming‐Sin Ng; et al. Plant Cell & Environment 2024. doi:10.1111/pce.15140

Other claims from this paper (6)

Observationobservedoriginal resultsignificant (as stated)simulated

Claim · model-written summary

The model predicted significant oxygen fluxes between infected and uninfected cell types.

Taxon: legume nodulest0
Outcome: O 2 fluxes between cell typese0

Verbatim

e0
“Compartmentalization of O 2 also predicted significant O 2 fluxes between cell types”
✓ located verbatim in the source · abstract, characters 814–898

t0
“legume nodules”
✓ located verbatim in the source · title, characters 75–89

Title

Diffusion and reaction of oxygen in the central tissue of ureide‐producing legume nodules

P. P. Thumfort; D. B. Layzell; C. A. Atkins Plant Cell & Environment 1999. doi:10.1046/j.1365-3040.1999.00498.x

Other claims from this paper (5)

Method / resourceobservedoriginal resultmeasured

Claim · model-written summary

Fluxes predicted by BEIS2 versions were about 300% higher than those of the previous BEIS model.

Outcome: Fluxes predicted by recent versionse0
Direction: highere1
Value: 300%e1
Comparator: a previous version of the model (BEIS)e1

Verbatim

e0
“Fluxes predicted by recent versions (BEIS2, BEIS2.1) of a biogenic emission model were within 10 to 50% of observed fluxes”
✓ located verbatim in the source · abstract, characters 1668–1790

e1
“and about 300% higher than those predicted by a previous version of the model (BEIS)”
✓ located verbatim in the source · abstract, characters 1791–1875

Title

Leaf, branch, stand and landscape scale measurements of volatile organic compound fluxes from U.S. woodlands

A. Guenther; J. Greenberg; P. Harley; et al. Tree Physiology 1996. doi:10.1093/treephys/16.1-2.17

Other claims from this paper (18)

Observation Branch enclosures of woodland plants revealed 78 VOCs.
Observation Hexenol derivatives were the most commonly observed oxygenated compounds in woodland branch emissions.
Observation Albizia showed high isoprene emission rates.
Observation Chusqua showed high isoprene emission rates.
Observation Mahonia showed high isoprene emission rates.
Observation Atriplex showed high monoterpene emission rates.
Observation Chrysthamnus showed high monoterpene emission rates.
Observation Sorbus showed high monoterpene emission rates.
Observation Measurements on 34 additional species confirmed previous VOC emission results.
Observation Leaf enclosure isoprene emission rates from Quercus were substantially higher than the rates used in existing emission models.
Method / resource Model predictions of diurnal isoprene flux variations were within ±35% of observed variations.
Method / resource A 60 min time resolution is reasonable for biogenic emission models.
Observation Average daytime stand-scale flux over a shrub oak stand was 1.3 mg C m(-2) h(-1).
Observation Average daytime stand-scale flux over a mixed forest stand was 1.5-2.5 mg C m(-2) h(-1).
Observation Morning, evening and nighttime fluxes from woodlands were less than 0.1 mg C m(-2) h(-1).
Observation Average daytime landscape-scale flux over a shrub oak-aspen and rangeland landscape was about 3 mg C m(-2) h(-1).
Observation Average daytime landscape-scale flux over a deciduous forest landscape was about 7 mg C m(-2) h(-1).
Method / resource BEIS2 and BEIS2.1 predicted fluxes within 10 to 50% of observed fluxes.

Method / resourceobservedoriginal resultpositivemeasured

Claim · model-written summary

The model accurately predicted carbon dioxide and oxygen fluxes.

Taxon: red beete1
Outcome: accurate prediction of carbon dioxide and oxygen fluxese0

Not reportedComparator

Verbatim

e0
“Results showed an accurate prediction of carbon dioxide and oxygen fluxes.”
✓ located verbatim in the source · abstract, characters 621–695

e1
“red beet plants in a closed environment plant growth chamber”
✓ located verbatim in the source · abstract, characters 21–81

Title

Developmental Stages in Dynamic Plant Growth Models

Heather Maclean; Denis Dochain; Geoff Waters; et al. AIP conference proceedings 2011. doi:10.1063/1.3636835

Other claims from this paper (3)

Observation Red beet photosynthetic quotient decreased during growth in a closed chamber.
Method / resource The earlier simple model did not predict the observed metabolic change.
Method / resource Developmental stages allowed the model to represent the metabolic change without unnecessary complexity.

Intervention effectobservedoriginal resultsignificant (as stated)simulated

Claim · model-written summary

Predicted SOC, NO3 -, CO2 and N2O fluxes at the footslope were significantly higher than at the shoulder.

Taxon: Switchgrass (Panicum virgatum L.)Panicum virgatume0
Treatment: footslopee1
Outcome: predicted SOC, soil NO3 -, CO2 and N2O fluxese1
Direction: highere1
Comparator: shouldere1

Verbatim

e0
“Switchgrass (Panicum virgatum L.)”
✓ located verbatim in the source · abstract, characters 0–33

e1
“The predicted SOC, soil NO3 -, CO2 and N2O fluxes at the footslope were significantly higher than that of the shoulder”
✓ located verbatim in the source · abstract, characters 3732–3850

Title

Impacts of Landscape Position and Nitrogen Fertilizer on Soils, Carbon and Nitrogen Leaching, and Greenhouse Gas Fluxes from Switchgrass Production in South Dakota

Liming Lai Open PRAIRIE (South Dakota State University) 2017

Other claims from this paper (19)

Intervention effect N rate did not affect soil pH, SOC or TN.
Intervention effect N rate did not affect soil bulk density, SOC stock or P.
Intervention effect SOC, TN and P were significantly higher at the footslope than at the shoulder and backslope.
Intervention effect Bulk density (ρb) at the footslope was significantly lower than at the shoulder and backslope.
Association SOC and TN values at 0- to 5-cm depth increased from 2009 to 2013.
Association SOC at 0- to 5-cm depth was significantly influenced by year under the high and medium N rates.
Intervention effect Average daily DOC at the backslope (6.45 mg L-1) was significantly lower than at the shoulder (8.38 mg L-1).
Intervention effect Average daily DOC at the backslope (6.45 mg L-1) was significantly lower than at the footslope (8.95 mg L-1).
Intervention effect Mean soil NO3 - under the high N rate (0.72 mg kg-1) was significantly lower than under the medium N rate in 2010.
Intervention effect Mean soil NO3 - under the high N rate (0.72 mg kg-1) was significantly lower than under the low N rate in 2010.
Intervention effect NO3 - contents under the low N rate were 68% higher than under the high N rate in 2013.
Intervention effect Annual mean soil N2O fluxes under the high N rate were 30% higher than under the low N rate in 2014.
Intervention effect Soil NO3 -, NO3 - leaching and N2O fluxes at the footslope were significantly higher than at other positions in some observed years.
Intervention effect The medium and high N rates gave significantly higher switchgrass biomass yield than the low N rate.
Method / resource The DAYCENT model gave satisfactory calibration and validation against measured high-frequency soil CO2 fluxes.
Association Simulated CO2 fluxes from switchgrass land did not differ significantly among changing climate scenarios.
Intervention effect Predicted SOC, NO3 -, CO2 and N2O fluxes under higher N rates were higher than under the low N rate.
Recommendation The medium N rate (56 kg N ha-1) is the optimal rate for switchgrass fields to increase biomass yield.
Intervention effect N rate did not affect NO3 - leaching.

“predicted fluxes”

Claim types

Direction of the findings

Over time

Claim type

Research area

Polarity

Statistics