Search claims · PlantClaims

Mechanismhypothesisoriginal resultmeasured

Claim · model-written summary

At the fresh marsh, increased dead biomass in the absence of herbivory and in fertilized plots probably contributed to the decrease in species density.

Taxon: herbaceous plant communitiese1
Outcome: decrease in species densitye6
Qualifier: increased dead biomass in the absence of herbivory and in the fertilized plotse6
Setting: fresh marshe6

Verbatim

e1
“examine the effects of nutrient enrichment and sediment addition on herbaceous plant communities with and without vertebrate herbivory”
✓ located verbatim in the source · abstract, characters 265–399

e6
“At the fresh marsh, increased dead biomass in the absence of herbivory and in the fertilized plots probably contributed to the decrease in species density”
✓ located verbatim in the source · abstract, characters 862–1016

Title

Herbivore Effects on Plant Species Density at Varying Productivity Levels

Laura Gough; James B. Grace Ecology 1998. doi:10.2307/176778

Other claims from this paper (4)

Intervention effect Fertilization increased community biomass in all plots.
Intervention effect Fertilization decreased species density only in plots protected from herbivory.
Intervention effect Herbivory alone did not alter species density at either site.
Intervention effect At the brackish marsh, herbivory caused a shift in dominance in fertilized plots from a competitively dominant palatable species to a less palatable species.

Mechanismauthor interpretationoriginal resultmeasured

Claim · model-written summary

Reduced stomatal density contributed to decreased grapevine stomatal conductance.

Taxon: grapevinesVitist0
Organ / stage: stomatal densitye0
Outcome: decrease in gse0
Qualifier: reduction of stomatal densitye0

Verbatim

e0
“The decrease in gs was dependent from a reduction of stomatal density”
✓ located verbatim in the source · abstract, characters 413–482

t0
“grapevines”
✓ located verbatim in the source · title, characters 55–65

Title

Stomatal behaviour, photosynthesis and leaf anatomy in grapevines grown at an elevated CO2 concentration in the field

Carlos M. Correia; Berta Gonçalves; José Boaventura‐Cunha 2005

Other claims from this paper (6)

Intervention effect Elevated CO2 significantly increased grapevine net CO2 assimilation rate.
Intervention effect Elevated CO2 reduced grapevine stomatal conductance.
Intervention effect Elevated CO2 improved intrinsic water use efficiency in grapevine.
Mechanism Direct effects of CO2 on guard cells contributed to decreased grapevine stomatal conductance.
Intervention effect Palisade parenchyma thickness was significantly higher under elevated CO2.
Intervention effect Spongy parenchyma thickness was significantly higher under elevated CO2.

Mechanismobservedoriginal resultmeasured

Claim · model-written summary

CO2 enrichment caused an irreversible long-term decrease in stomatal conductance through reduced density.

Taxon: M. corymbosaMaranthes corymbosae1
Outcome: long-term, irreversible decline in g2e0
Direction: declinee0
Qualifier: decreased stomatal densitye0

Verbatim

e0
“a long-term, irreversible decline in g2 as a result of a decreased stomatal density.”
✓ located verbatim in the source · abstract, characters 1061–1145

e1
“M. corymbosa was more sensitive”
✓ located verbatim in the source · abstract, characters 449–480

Title

Stomatal responses to a range of variables in two tropical tree species grown with CO₂enrichment

C.A. Berryman; D. Eamus; G.A. Duff Journal of Experimental Botany 1994. doi:10.1093/jxb/45.5.539

Other claims from this paper (7)

Intervention effect CO2 enrichment increased sensitivity of M. corymbosa stomatal conductance to leaf drying.
Intervention effect CO2 treatment did not influence the rate of stomatal conductance reduction in response to abscisic acid.
Intervention effect CO2 enrichment decreased the rate of stomatal conductance reduction in response to CaCl2.
Mechanism CO2 enrichment caused a reversible short-term decrease in stomatal conductance through reduced aperture.
Intervention effect CO2 enrichment did not alter E. tetrodonta stomatal response to LAVPD and internal CO2.
Intervention effect Elevated CO2 decreased the slope of E. tetrodonta stomatal response to temperature.
Intervention effect Elevated CO2 decreased E. tetrodonta equilibrium stomatal conductance at saturating light.

Mechanismhypothesisoriginal resultmeasured

Claim · model-written summary

The decrease in perennial forb and graminoid density may be due to enhanced sand accumulation.

Taxon: perennial forbs and graminoidse4
Outcome: density of perennial forbs and graminoidse4
Qualifier: enhanced sand accumulatione5

Verbatim

e4
“the density of perennial forbs and graminoids decreased with increasing shrub cover at both microsites”
✓ located verbatim in the source · abstract, characters 1073–1175

e5
“possibly because of enhanced sand accumulation”
✓ located verbatim in the source · abstract, characters 1177–1223

Title

Shrub cover regulates population dynamics of herbaceous plants at individual shrub scale on the Mongolian steppe

A. Koyama; T. Sasaki; U. Jamsran; et al. Journal of Vegetation Science 2014. doi:10.1111/jvs.12253

Other claims from this paper (8)

Mechanismauthor interpretationoriginal resultmeasured

Claim · model-written summary

Membrane area expansion could account for the IMP density decrease in water-imbibed cytoplasmic membrane faces.

Treatment: water‐imbibede0
Outcome: IMPs per unit areae0
Direction: decreasee0
Qualifier: such expansione0

Not reportedTaxon

Verbatim

e0
“such expansion can account for the decrease in IMPs per unit area in the cytoplasmic side (PF) of the membrane in water‐imbibed, but not in salt‐imbibed, tissue.”
✓ located verbatim in the source · abstract, characters 529–690

Title

Changes in plasmalemma organization in cowpea radicle during imbibition in water and NaCl solutions

RICHARD D. BLISS; K. A. PLATT‐ALOIA; W.W. THOMSON Plant Cell & Environment 1984. doi:10.1111/1365-3040.ep11592139

Other claims from this paper (7)

Mechanismauthor interpretationoriginal resultmeasured

Claim · model-written summary

Looser fibre walls, indicated by increased drying shrinkage, explained lower density.

Taxon: aspene1
Outcome: decrease in densitye0
Direction: decreasee0
Qualifier: looser structure of fibre cell wallse0

Verbatim

e0
“The decrease in density was explained by a looser structure of fibre cell walls as shown by increased wall shrinkage on drying.”
✓ located verbatim in the source · abstract, characters 1094–1221

t0
“developing wood”
✓ located verbatim in the source · title, characters 39–54

e1
“aspen (Populus)”
✓ located verbatim in the source · abstract, characters 28–43

t1
“transgenic lines of hybrid aspen with strongly reduced SUS activity in developing wood”
✓ located verbatim in the source · abstract, characters 483–569

Title

Deficient sucrose synthase activity in developing wood does not specifically affect cellulose biosynthesis, but causes an overall decrease in cell wall polymers

Lorenz Gerber; Bo Zhang; Melissa Roach; et al. New Phytologist 2014. doi:10.1111/nph.12888

Other claims from this paper (6)

Intervention effect Reduced SUS activity produced no dramatic growth phenotype in glasshouse trees.
Intervention effect Reduced SUS lines had notable changes in wood chemistry and ultrastructure.
Intervention effect Dry-weight percentage composition of wood polymers did not change significantly.
Intervention effect Wood density decreased in reduced SUS lines.
Intervention effect Lignin, hemicellulose and cellulose content per wood volume decreased.
Mechanism SUS was not essential for cellulose biosynthesis but influenced total carbon incorporation into wood cell walls.

Mechanismauthor interpretationoriginal resultnegativemeasured

Claim · model-written summary

Reduced pine carbon in burned plots was associated with lower stem density rather than reduced growth.

Taxon: Aleppo pinePinus halepensise0
Outcome: Aleppo pine carbon stocke0
Qualifier: decrease in stem densitye0

Verbatim

e0
“The decrease in Aleppo pine carbon stock within burned plots was not associated with a growth reduction, but was due to a decrease in stem density.”
✓ located verbatim in the source · abstract, characters 2615–2762

Title

Fire recurrence effects on aboveground plant and soil carbon stocks in Mediterranean shrublands with Aleppo pine

John E. Herman; J. den Ouden; G.M.J. Mohren; et al. EGU General Assembly Conference Abstracts 2009

Other claims from this paper (19)

Intervention effect Recurrent fires decreased total ecosystem carbon stocks.
Observation Control carbon stocks exceeded once burned sites by 3.5 times.
Observation Control carbon stocks exceeded twice burned sites by 5.0 times.
Observation Control carbon stocks exceeded thrice burned sites by 5.5 times.
Observation Aboveground biomass held more carbon than soil in controls, while soil dominated burned plots.
Intervention effect Increasing fire frequency from one to two fires decreased total soil carbon.
Observation Control soil stored 3551 g m−2C.
Observation Once burned soil recovered 70% of control soil carbon over 13 years.
Observation Soil burned two or three times recovered about 50% of control carbon.
Intervention effect Litter layer carbon declined from one to two fires.
Association Humus and upper mineral soil carbon stocks did not vary consistently with fire frequency.
Intervention effect Fire lowered organic carbon in litter and humus horizons.
Association Fire frequency did not significantly affect organic carbon in litter and humus horizons.
Intervention effect Increasing fire frequency lowered upper mineral soil organic carbon.
Association Total soil nitrogen and C/N ratios were not significantly affected by fire frequency.
Observation Aboveground plant carbon was 8652 g m−2C in controls, 93% in trees.
Observation Most frequently burned plots held only 509 g m−2C aboveground carbon.
Association Shrub carbon barely differed across fire frequencies.
Intervention effect Aleppo pine carbon stock fell from 7770 g m−2 in controls to 25.6 g m−2 after three fires.

Mechanismauthor interpretationoriginal resultmeasured

Claim · model-written summary

The decrease in bulk density with gypsum is attributed to a greater increase in porosity relative to 1,000-grain weight.

Taxon: cornZea mays subsp. mayse2
Outcome: bulk densitye3
Qualifier: a greater increase in porosity in relation to weight of 1,000 grainse3

Verbatim

e2
“corn irrigated with increasing doses of gypsum”
✓ located verbatim in the source · abstract, characters 459–505

e3
“the decrease in bulk density in function of the increase of gypsum doses is attributed to a greater increase in porosity in relation to weight of 1,000 grains”
✓ located verbatim in the source · abstract, characters 1333–1491

Title

Productivity and physical properties of corn grains treated with different gypsum doses

Marques Vidal Vitor; Antonio Loureiro Soares Frederico; Batista Teixeira Marconi; et al. African Journal of Agricultural Research 2016. doi:10.5897/ajar2016.11468

Other claims from this paper (2)

Association Grain bulk density had a direct effect on corn grain productivity (path analysis).
Intervention effect Bulk density of corn grains decreased as gypsum doses increased.

Mechanismhypothesisoriginal resultnegativemeasured

Claim · model-written summary

Changes in photosystem viability may have been caused by a decrease in the density of active reaction centers.

Taxon: Medicago sativa L.Medicago sativae0
Outcome: viability of the photosysteme6
Qualifier: a decrease in the density of the active reaction centers (RC/CSo)e6

Verbatim

e0
“chlorophyll a fluorescence parameters of Medicago sativa L.”
✓ located verbatim in the source · abstract, characters 191–250

e6
“The above-mentioned changes in the viability of the photosystem may have been caused by a decrease in the density of the active reaction centers (RC/CSo) and an increase in the amount of dissociated energy (DIo/CSo)”
✓ located verbatim in the source · abstract, characters 1304–1519

Title

The second heat wave leads to changes in the efficiency of alfalfa’s photosynthetic energy use

Irena Januškaitienė Biologija 2023. doi:10.6001/biologija.2023.69.2.2

Other claims from this paper (8)

Intervention effect Both heat waves significantly reduced the quantum yield of PSII photochemistry in alfalfa.
Intervention effect During the second heat wave the negative effects persisted but were weaker.
Intervention effect PIABS decreased by 54.0% during the first heat wave compared with controls.
Intervention effect PIABS decreased by 46.8% during the second heat wave compared with controls.
Intervention effect Heat waves increased absorbed and trapped energy in alfalfa.
Intervention effect Electron transport rate from QA to QB in alfalfa under heat waves was not followed by an increase.
Intervention effect After the second recovery, RC/CSo in heat and drought stressed alfalfa equalled that of controls.
Association Heat and drought stress in alfalfa resulted in lower energy waste as heat (DIo/CSo).

Mechanismobservedoriginal resultmeasured

Claim · model-written summary

The decrease in leaf maximum hydraulic conductance arose from lower minor vein density and narrower midrib xylem vessels.

Taxon: Caragana korshinskiiCaragana korshinskiit0
Organ / stage: midrib xylem vesselse2
Outcome: leaf maximum hydraulic conductancee1
Qualifier: lower minor vein density and the narrower midrib xylem vesselse2

Verbatim

t0
“Caragana korshinskii”
✓ located verbatim in the source · abstract, characters 644–664

e1
“leaf maximum hydraulic conductance”
✓ located verbatim in the source · abstract, characters 366–400

e2
“arose from the lower minor vein density and the narrower midrib xylem vessels”
✓ located verbatim in the source · abstract, characters 1132–1209

Title

A clear trade‐off between leaf hydraulic efficiency and safety in an aridland shrub during regrowth

Guang‐Qian Yao; Zheng‐Fei Nie; Yuan‐Yuan Zeng; et al. Plant Cell & Environment 2021. doi:10.1111/pce.14156

Other claims from this paper (7)

“decrease in density”

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