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“yield decrease”

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Associationobservedoriginal resultno effectmeasured

Claim · model-written summary

Vertebrate species richness did not decrease with cacao yield in smallholder agroforests in Indonesia.

Taxon: cacaoTheobroma cacaoe0
Outcome: vertebratese1
Direction: did not decreasee1
Setting: Indonesiae0

Verbatim

e0
“Here, we integrate biodiversity and crop productivity data for smallholder cacao in Indonesia to exemplify for tropical agroforests that there is little relationship between yield and biodiversity under current management”
✓ located verbatim in the source · abstract, characters 238–459

e1
“Species richness of trees, fungi, invertebrates, and vertebrates did not decrease with yield”
✓ located verbatim in the source · abstract, characters 529–621

Title

Combining high biodiversity with high yields in tropical agroforests

Yann Clough; Jan Barkmann; Jana Juhrbandt; et al. Proceedings of the National Academy of Sciences 2011. doi:10.1073/pnas.1016799108

Other claims from this paper (4)

Associationobservedoriginal resultno effectmeasured

Claim · model-written summary

Species richness of trees, fungi and invertebrates did not decrease with cacao yield in smallholder agroforests in Indonesia.

Taxon: cacaoTheobroma cacaoe0
Outcome: Species richness of trees, fungi, invertebratese1
Direction: did not decreasee1
Setting: Indonesiae0

Verbatim

e0
“Here, we integrate biodiversity and crop productivity data for smallholder cacao in Indonesia to exemplify for tropical agroforests that there is little relationship between yield and biodiversity under current management”
✓ located verbatim in the source · abstract, characters 238–459

e1
“Species richness of trees, fungi, invertebrates, and vertebrates did not decrease with yield”
✓ located verbatim in the source · abstract, characters 529–621

Title

Combining high biodiversity with high yields in tropical agroforests

Yann Clough; Jan Barkmann; Jana Juhrbandt; et al. Proceedings of the National Academy of Sciences 2011. doi:10.1073/pnas.1016799108

Other claims from this paper (4)

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

N fertilization did not decrease species diversity over time.

Treatment: N fertilizatione0
Outcome: species diversitye0
Direction: did not decreasee0

Not reportedTaxonComparator

Verbatim

e0
“N fertilization did not decrease species diversity through time.”
✓ located verbatim in the source · abstract, characters 1389–1453

Title

Long‐Term Biomass Yield and Species Composition in Native Perennial Bioenergy Cropping Systems

Jacob M. Jungers; Adam T. Clark; Kevin Betts; et al. Agronomy Journal 2015. doi:10.2134/agronj15.0014

Other claims from this paper (14)

Observation Without N, switchgrass monocultures had among the highest biomass yields, 5.1 Mg ha −1.
Observation Without N, the eight-species mixture had among the highest biomass yields, 5.1 Mg ha −1.
Intervention effect With N, switchgrass monocultures yielded 6.8 Mg ha −1.
Intervention effect With N, four-species grass mixtures yielded 6.4 Mg ha −1.
Association Switchgrass biomass yield increased over time.
Association Canada wild rye biomass yield decreased over time.
Association High diversity mixtures maintained stable biomass yield over time.
Association Other mixtures showed nonlinear yield changes, possibly linked to species composition changes.
Observation Individual species relative abundance changed over time.
Observation Shannon diversity was constant except in the four-species legume mixture.
Observation Shannon diversity decreased in the four-species legume mixture.
Association Diversity was positively associated with biomass yield after establishment.
Association The diversity–yield association weakened with stand age.
Observation Native plant mixtures with or without N yielded similarly to highly productive monocultures.

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Diversified crop rotation without chemical protection did not decrease weed species diversity or functional diversity relative to continuous rye cropping.

Taxon: ryeSecale cerealee1
Treatment: Diversified crop rotation with no chemical protectione1
Interactor: weede3weed
Outcome: weed species diversity or functional diversitye3
Direction: without a decreasee3
Comparator: continuous rye cropping (CC)e2

Verbatim

e1
“Diversified crop rotation with no chemical protection resulted in a satisfactory rye yield and reduced weed abundance”
✓ located verbatim in the source · abstract, characters 703–820

e2
“Long-term continuous rye cropping (CC) provided a background for comparison”
✓ located verbatim in the source · abstract, characters 424–499

e3
“without a decrease in weed species diversity or functional diversity”
✓ located verbatim in the source · abstract, characters 848–916

Title

Crop Rotation Compared with Continuous Rye Cropping for Weed Biodiversity and Rye Yield. A Case Study of a Long-Term Experiment in Poland

Magdalena Jastrzębska; Marta K. Kostrzewska; Marek Marks; et al. Agronomy 2019. doi:10.3390/agronomy9100644

Other claims from this paper (6)

Observation Diversified crop rotation without chemical protection gave a satisfactory rye yield.
Intervention effect Diversified crop rotation without chemical protection reduced weed abundance relative to continuous rye cropping.
Association Herbicide application had no effect on rye yield protection when rye was grown under crop rotation.
Association Herbicide application was harmful to weed biodiversity under crop rotation of rye.
Association Rye yield correlated negatively with weed biomass.
Association Rye yield showed no link with weed biodiversity.

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