Search claims · PlantClaims

Associationobservedoriginal resultmeasured

Claim · model-written summary

Small disturbances markedly decreased species density.

Taxon: wooded meadowt0
Treatment: Small disturbancese0
Outcome: species densitye0
Direction: decreasee0

Verbatim

e0
“Small disturbances cause a remarkable decrease in species density”
✓ located verbatim in the source · abstract, characters 604–669

t0
“wooded meadow”
✓ located verbatim in the source · title, characters 37–50

Title

High species richness in an Estonian wooded meadow

Kull; Kalevi 2016

Other claims from this paper (9)

Observation The maximum species count was 25 in a 10 cm x 10 cm plot.
Observation The maximum species count was 42 in a 20 cm x 20 cm plot.
Observation The maximum species count was 63 in a I m2 plot.
Association Species richness was highest at the most regularly mowed long term sites.
Association Fertilized sites had lower species density.
Association Sites where mowing temporarily stopped had lower species density.
Observation The richest community had an LAI of 2.8.
Observation The richest community had aboveground dry biomass of 175 g/m2.
Association Species number decreased as herb layer height increased.

Associationobservedoriginal resultmeasured

Claim · model-written summary

Vine size and density decrease gradually upwards along the altitudinal gradation.

Taxon: vinese6
Treatment: altitudinal gradatione0
Outcome: size and density of vinese6
Direction: decreasee6

Verbatim

e0
“an exploratory study was made of altitudinal gradation between subantarctic or temperate rain forest (at higher elevations) and subtropical rain forest”
✓ located verbatim in the source · abstract, characters 60–211

e6
“the size and density of vines as well as leaf sizes of trees and vines decrease gradually upwards”
✓ located verbatim in the source · abstract, characters 1470–1567

Title

An altitudinal transect in rain forest in the Barrington Tops area, New South Wales

J. C. TURNER Australian Journal of Ecology 1976. doi:10.1111/j.1442-9993.1976.tb01104.x

Other claims from this paper (8)

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

Greater overstory conifer density was associated with decreased aspen density, basal area and seedling establishment.

Taxon: aspene0
Outcome: density, basal area, and seedling establishmente0
Direction: decreasee0
Setting: overstory conifer densitye0

Verbatim

e0
“as overstory conifer density increases, aspen decrease in density, basal area, and seedling establishment”
✓ located verbatim in the source · abstract, characters 1379–1484

Title

Ecophysiological Mechanisms Underlying Aspen to Conifer Succession

W. John Calder ScholarsArchive (Brigham Young University) 2009

Other claims from this paper (11)

Observation Aspen was more sensitive to light and soil changes than subalpine fir.
Intervention effect Reduced light lowered aspen height, biomass, photosynthesis and defense compound production.
Intervention effect Conifer-influenced soil lowered aspen height, biomass, photosynthesis and defense compound production.
Intervention effect Low light reduced subalpine fir photosynthesis, biomass and root:shoot ratio.
Intervention effect Subalpine fir physiology and growth did not differ between soil types.
Association Conifers established closer to aspen as conifer canopy density increased.
Association Closer canopy proximity was associated with increased mortality of both aspen and subalpine fir.
Intervention effect Twenty minutes of smoke exposure reduced photosynthetic capacity by more than 50% in five of six tree species.
Mechanism Photosynthesis impairment under smoke reflected reduced stomatal conductance and biochemical limitations.
Observation Deciduous species generally showed greater smoke sensitivity than conifers.
Intervention effect Smoke did not significantly affect growth or secondary defense compound production.

Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Population density decreased slightly during the observation period.

Taxon: Senecio carpaticusJacobaea abrotanifolia subsp. carpathicat0
Outcome: population densitye0
Direction: decreasee0

Verbatim

e0
“a slight decrease in the population density was noted”
✓ located verbatim in the source · abstract, characters 560–613

t0
“Senecio carpaticus”
✓ located verbatim in the source · title, characters 23–41

Title

Population dynamics of Senecio carpaticus Herbich in the Chornohora (Ukrainian Carpathians)

Volodymyr Kyyak Proceedings of the State Natural History Museum 2023. doi:10.36885/nzdpm.2022.38.31-42

Other claims from this paper (11)

Associationobservedoriginal resultmeasured

Claim · model-written summary

Seedling density did not decrease with altitude.

Taxon: vegetationt0
Outcome: densitiese0
Direction: did not decreasee0
Setting: altitudee0

Verbatim

e0
“The densities did not decrease with altitude.”
✓ located verbatim in the source · abstract, characters 665–710

t0
“Characteristics of the seedling flora in alpine vegetation, subarctic Finland, I. Seedling densities in 15 plant communities.”
✓ located verbatim in the source · title, characters 0–125

Title

Characteristics of the seedling flora in alpine vegetation, subarctic Finland, I. Seedling densities in 15 plant communities.

Pirjo Welling; Kari Laine Annales Botanici Fennici 2000

Other claims from this paper (5)

Associationauthor interpretationoriginal resultnegativemeasured

Claim · model-written summary

Overgrowth of former alvar grassland decreased shoot density.

Taxon: alvar grasslande0
Outcome: shoot densitye0
Direction: decreasee0
Setting: former alvar grasslande0

Verbatim

e0
“The overgrowing of this former alvar grassland has resulted in the decrease of shoot density and thus the decrease of species richness per unit area”
✓ located verbatim in the source · abstract, characters 1061–1209

Title

Small‐scale dynamics and species richness in successional alvar plant communities

Meelis Pärtel; Martin Zobel Ecography 1995. doi:10.1111/j.1600-0587.1995.tb00121.x

Other claims from this paper (10)

Observation Area-based species richness increased in the cut and grazed site.
Observation Shoot density increased in the cut and grazed site.
Observation Shoot-based species richness showed no significant dynamics.
Observation The forest was considered stable.
Observation The cut and grazed site was considered successional.
Observation Small-scale turnover was nearly equally high across all sites, supporting the carousel model and rejecting the initial hypothesis.
Observation Successional and intrinsic small-scale dynamics were separate processes whose scale also depended on shoot density.
Association Overgrowth of former alvar grassland decreased species richness per unit area.
Observation Total species number changed little despite overgrowth.
Recommendation The authors conclude that restoring grassland communities remains possible.

Associationobservedoriginal resultmeasured

Claim · model-written summary

Soil bulk density decreased with reclamation age.

Outcome: bulk densitye0
Direction: decreasee0
Setting: Revegetatione0

Not reportedTaxon

Verbatim

e0
“Revegetation also enhances decrease of bulk density with age of reclamation.”
✓ located verbatim in the source · abstract, characters 1317–1393

Title

Revegetation of tin post-mining sites in Bangka Island to enhance soil surface development

D Setyawan; A Hermawan; H Hanum IOP Conference Series Earth and Environmental Science 2019. doi:10.1088/1755-1315/393/1/012093

Other claims from this paper (5)

Observation Recently revegetated surface soil became darker with organic matter and topsoil addition.
Observation The older Acacia site remained grey due to little decomposing litter incorporation.
Association Water infiltration was related to sand fraction.
Association Water infiltration was not related to revegetation age.
Recommendation Plant selection is key to long-term soil surface recovery.

Observationhypothesisoriginal resultprojected

Claim · model-written summary

Authors project Euphrasia population density will decrease under warming.

Taxon: Euphrasia frigidaEuphrasia frigidat0
Outcome: Population densitiese0
Direction: decreasee0
Qualifier: due to lower disturbance levels by frost heave and increased vegetation covere0

Verbatim

e0
“Population densities, however, are likely to decrease under elevated temperatures, due to lower disturbance levels by frost heave and increased vegetation cover.”
✓ located verbatim in the source · abstract, characters 1007–1168

t0
“Euphrasia frigida”
✓ located verbatim in the source · title, characters 129–146

Title

Effects of Temperature and Natural Disturbance on Growth, Reproduction, and Population Density in the Alpine Annual Hemiparasite Euphrasia frigida

Jorun Nyléhn; Ørjan Totland Arctic Antarctic and Alpine Research 1999. doi:10.1080/15230430.1999.12003307

Other claims from this paper (6)

Intervention effect Experimental warming significantly increased Euphrasia growth and seed production.
Intervention effect Higher temperatures caused a small decrease in Euphrasia population density over three seasons.
Association Natural disturbance did not influence Euphrasia growth and seed production.
Association Euphrasia population density peaked at intermediate disturbance.
Mechanism Authors suggest warming effects on hemiparasites may be mediated by improved host conditions.
Observation Authors hypothesize global warming will increase Euphrasia seed output.

Observationobservedoriginal resultmeasured

Claim · model-written summary

Ungrazed vegetation decreased soil bulk density.

Taxon: Vegetationt0
Outcome: bulk densitye0
Direction: decreasee0

Verbatim

e0
“with a resultant increase in surface soil organic matter and decrease in bulk density”
✓ located verbatim in the source · abstract, characters 1784–1869