Search claims · PlantClaims

Observationauthor interpretationoriginal resultnegativeprojected

Claim · model-written summary

Birch tree density was expected to decrease greatly in most damaged areas.

Taxon: mountain birchBetula pubescens var. pumilat0
Outcome: Tree densitye0
Direction: decrease greatlye0

Verbatim

e0
“Tree density can be expected to decrease greatly in most of these areas”
✓ located verbatim in the source · abstract, characters 1178–1249

t0
“mountain birch”
✓ located verbatim in the source · title, characters 19–33

Title

On the recovery of mountain birch afterEpirritadamage in Finnish Lapland, with a particular emphasis on reindeer grazing

Juhani Lehtonen; Risto K. Heikkinen Ecoscience 1995. doi:10.1080/11956860.1995.11682303

Other claims from this paper (7)

Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

Stand density should decrease on low quality sites.

Taxon: Eucalyptus grandisEucalyptus grandist0
Outcome: stand density has to be decreased in low quality sitese0

Verbatim

e0
“stand density has to be decreased in low quality sites”
✓ located verbatim in the source · abstract, characters 709–763

t0
“Eucalyptus grandis”
✓ located verbatim in the source · title, characters 25–43

Title

Stand density effects on Eucalyptus grandis growth in Entre Ríos

F. Dalla-Tea Forest Systems 1995. doi:10.5424/537

Other claims from this paper (5)

Observation Basal area decreased with increasing stand density.
Observation DBH, mean height and survival increased with density.
Observation Spacing explained 60 to 76 percent of DBH and basal area variation.
Recommendation Larger DBH requires lower density, longer rotation or thinning.
Recommendation Maximum final volume requires higher densities than presently used.

Intervention effectobservedreview summarybasis n/a

Claim · model-written summary

Added growth from nitrogen fertilization usually decreases wood density in the hard pines.

Taxon: hard pinesPinus subgen. Pinuse0
Treatment: nitrogen fertilizatione0
Outcome: wood densitye0
Direction: decreasee0

Not reportedComparator

Verbatim

e0
“added growth from nitrogen fertilization will decrease wood density in the hard pines”
✓ located verbatim in the source · abstract, characters 343–428

Title

SILVICULTURAL EFFECTS ON WOOD PROPERTIES

Bruce J. Zobel http://www.ipef.br/PUBLICACOES/international/nr02/cap05.pdf 1992

Other claims from this paper (5)

Intervention effect A similar amount of added growth from thinning leaves the wood of hard pines relatively unchanged.
Intervention effect Fertilization can greatly affect the wood produced, as can drastic thinning.
Intervention effect Differences in stocking density in plantations from initial planting have less effect on wood.
Intervention effect Correct pruning generally has only a minor effect on wood other than the obvious increase in clear wood.
Observation Almost any extreme silvicultural activity can alter wood enough to affect final products, especially for exotic species planted in new environments.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Increasing the GA3 concentration from 25 or 50 to 200 mg/L tended to decrease total flower bud density, especially when applied May through July.

Taxon: PeachPrunus persicat0
Treatment: Increasing the concentration from 25 or 50 mg·L -1 to 200 mg·L -1e0
Outcome: total flower bud densitye0
Direction: tended to decreasee0

Not reportedComparator

Verbatim

t0
“Peach”
✓ located verbatim in the source · title, characters 71–76

e0
“Increasing the concentration from 25 or 50 mg·L -1 to 200 mg·L -1 tended to decrease total flower bud density, especially when applied May through July”
✓ located verbatim in the source · abstract, characters 555–706

Title

Flower Bud Thinning and Winter Survival of `Redhaven' and `Cresthaven' Peach in Response to GA3 Sprays

Bradley H. Taylor; Dagmar Geisler-Taylor Journal of the American Society for Horticultural Science 1998. doi:10.21273/jashs.123.4.500

Other claims from this paper (13)

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.

Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Flower density decreased at the canopy bottom.

Taxon: peach treePrunus persicat0
Outcome: flower densitye0
Direction: decreasee0
Setting: bottome1

Verbatim

t0
“peach tree”
✓ located verbatim in the source · title, characters 49–59

e0
“In this layer, a stimulation of internode elongation and a decrease of flower density were detected”
✓ located verbatim in the source · abstract, characters 616–715

e1
“at the bottom in correspondence with the maximum leaf area index”
✓ located verbatim in the source · abstract, characters 550–614

Title

Light environment, growth and morphogenesis in a peach tree canopy

R. Baraldi; F. Rossi; O. Facini; et al. Physiologia Plantarum 1994. doi:10.1111/j.1399-3054.1994.tb00442.x

Other claims from this paper (7)

Observation Photosynthetically active radiation was significantly lower at canopy bottom than top.
Observation Blue fluence rate varied with canopy height and season similarly to PAR.
Observation Phytochrome photoequilibria were significantly lower at canopy bottom when leaf area index was maximal.
Observation Internode elongation was stimulated at the canopy bottom.
Observation Shoot growth rates were higher at the canopy top.
Observation The canopy top had about twice as many lateral shoots.
Observation More sun leaves occurred at canopy top.

Observationauthor interpretationoriginal resultmeasured

Claim · model-written summary

The stomatal conductance reduction was not caused by reduced stomatal density.

Taxon: cherryt0
Outcome: stomatal densitye0
Direction: not caused by a decreasee0

Verbatim

e0
“but was not caused by a decrease in stomatal density”
✓ located verbatim in the source · abstract, characters 594–646

t0
“cherry (Prunus avium)”
✓ located verbatim in the source · title, characters 53–74

Title

Interactive effects of elevated [CO₂] and drought on cherry (Prunus avium) seedlings II. Photosynthetic capacity and water relations

MAURO CENTRITTO; FEDERICO MAGNANI; HELEN S. J. LEE; et al. New Phytologist 1999. doi:10.1046/j.1469-8137.1999.00327.x

Other claims from this paper (12)

Intervention effect Elevated CO2 significantly reduced stomatal conductance in unstressed cherry seedlings in both seasons.
Intervention effect Droughted seedlings showed little or no stomatal conductance reduction under elevated CO2.
Association Stomatal conductance was highly correlated with soil water status.
Intervention effect Elevated CO2 significantly increased photosynthetic rate under both water regimes.
Intervention effect Elevated CO2 improved instantaneous transpiration efficiency throughout the experiment.
Association Instantaneous transpiration efficiency was unrelated to long-term water use efficiency.
Observation A max was strongly reduced in the second growing season.
Intervention effect CO2 treatment did not affect A max.
Intervention effect Elevated CO2 decreased Rubisco activity.
Observation Leaf carbon:nitrogen ratio increased by the end of both seasons.
Intervention effect Elevated CO2 did not improve cherry plant water relations.
Intervention effect Elevated CO2 did not increase water-stress tolerance of cherry seedlings.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Reduced humidity decreased stomatal density.

Taxon: plumPrunus domesticat0
Treatment: reduction in r.h.e0
Outcome: stomatal densitye0
Direction: decreasee0

Not reportedComparator

Verbatim

e0
“the reduction in r.h. induced a decrease in stomatal density”
✓ located verbatim in the source · abstract, characters 591–651

t0
“Water loss and photosynthesis of plum plantlets is influenced by relative humidity during rootingin vitro”
✓ located verbatim in the source · title, characters 0–105

Title

Water loss and photosynthesis of plum plantlets is influenced by relative humidity during rootingin vitro

R. Sciutti; S. Morini Journal of Horticultural Science 1995. doi:10.1080/14620316.1995.11515291

Other claims from this paper (5)

Intervention effect Lower rooting humidity increased plantlet resistance to water loss.
Intervention effect The 80% and 70% humidity treatments produced denser leaf wax and thicker filaments.
Observation Reduced humidity produced more ellipsoidal stomata with smaller openings.
Intervention effect Photosynthetic activity was slower after rooting at 80% than at 100% humidity.
Observation Total eight-hour CO2 uptake tended to be similar between 80% and 100% humidity treatments.

Associationobservedoriginal resultmeasured

Claim · model-written summary

Fire intensity decreased uphill with increasing rockiness and decreasing fuel density.

Outcome: fire intensitye0
Direction: decreasee0
Qualifier: increasing site rockiness and decreasing fuel densitye0
Setting: uphille0

Not reportedTaxon

Verbatim

e0
“a general uphill decrease in fire intensity, matching trends in increasing site rockiness and decreasing fuel density”
✓ located verbatim in the source · abstract, characters 1934–2051

t0
“Allosyncarpia ternata”
✓ located verbatim in the source · title, characters 52–73

Title

The role of seedling age and size in the recovery ofAllosyncarpia ternatafollowing fire

I. R. FORDYCE; D. EAMUS; G. A. DUFF; et al. Australian Journal of Ecology 1997. doi:10.1111/j.1442-9993.1997.tb00671.x

Other claims from this paper (11)

Association Fire intensity did not alter mortality among five-year-old seedlings.
Intervention effect Young seedlings had significantly greater mortality under high-intensity fire.
Intervention effect Three-year-old seedling survival and growth were marginally favored by low-intensity fire.
Association Three-year-old seedling survival and growth depended on pretreatment height.
Observation Fire tolerance threshold was above three years for short seedlings and below three years for taller seedlings.
Observation Wildfire caused severe damage to seedlings.
Observation More than three-quarters of older seedlings recovered after wildfire.
Observation Recovered older seedlings grew faster than unburned neighbors.
Observation Partial leaf scorch promoted new growth in tall seedlings and saplings.
Observation The wildfire killed all 18-month-old seedlings.
Recommendation The authors recommend at least three fire-free years after seed fall for seedling establishment.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Logging reduced stem density during the first three years.

Taxon: forest standst0
Treatment: logginge0
Outcome: stem densitye0
Direction: decreasee0

Not reportedComparator

Verbatim

t0
“two Amazonian forest stands”
✓ located verbatim in the source · abstract, characters 16–43

e0
“The stand response during Ill(? first three years after logging is characterized by a decrease In stem density, and basal area because of high mortality rates.”
✓ located verbatim in the source · abstract, characters 444–603

Title

Effects of silvicultural treatments in the tropical rain forest : a comparison between ZF-2 (Manaus, Brazil) and Paracou (French Guiana)

Vincent Favrichon; Henri-Félix Maître; Níro Higuchi Agritrop (Cirad) 1998

Other claims from this paper (5)

Observation The natural ZF2 stand was more dynamic than Paracou.
Intervention effect Logging reduced basal area during the first three years.
Observation Stand basal area recovered at about 2% per year at both sites.
Association Basal area recovery rate was linked to canopy opening intensity.
Observation Logging increased light-demanding species in stand composition.

“decrease in density”

Claim types

Direction of the findings

Over time

Claim type

Research area

Polarity

Statistics