By organism › Green plants › Pinaceae › Picea rubens

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Red spruce alone increased in height under warming, contingent on CO2 and soil moisture.

Taxon: red sprucePicea rubense0
Treatment: warminge0
Outcome: heighte0
Direction: increasede0
Qualifier: varied by CO 2 and soil moisture treatmentse0

Not reportedComparator

Verbatim

e0
“In response to warming, only red spruce increased in height; however, this effect varied by CO 2 and soil moisture treatments”
✓ located verbatim in the source · abstract, characters 326–451

Title

Climate change experiment suggests divergent responses of tree seedlings in eastern North America’s Acadian Forest Region over the 21st century

William R. Vaughn; Anthony R. Taylor; David A. MacLean; et al. Canadian Journal of Forest Research 2021. doi:10.1139/cjfr-2021-0047

Other claims from this paper (12)

Intervention effect Drought did not affect red spruce biomass.
Intervention effect Drought increased red spruce mortality by 2%.
Intervention effect Warming increased balsam fir height growth only under certain moisture and CO2 conditions.
Intervention effect Drought reduced balsam fir biomass by 24%.
Intervention effect Drought increased balsam fir mortality by 5%.
Intervention effect Warming did not improve red maple height growth.
Observation Red maple height growth remained 7–50 times that of the conifers.
Observation No red maple mortality was observed.
Intervention effect CO2 enrichment increased growth of droughted seedlings relative to ambient treatment.
Observation Balsam fir was judged least adapted to warming and drought.
Observation Red spruce displayed some positive responses.
Observation The authors suggest red maple may outperform both conifers under warming.

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Drought did not affect red spruce biomass.

Taxon: red sprucePicea rubense0
Treatment: drought treatmente0
Outcome: biomasse0
Direction: not affectede0

Not reportedComparator

Verbatim

e0
“Under the drought treatment, red spruce biomass was not affected”
✓ located verbatim in the source · abstract, characters 453–517

Title

Climate change experiment suggests divergent responses of tree seedlings in eastern North America’s Acadian Forest Region over the 21st century

William R. Vaughn; Anthony R. Taylor; David A. MacLean; et al. Canadian Journal of Forest Research 2021. doi:10.1139/cjfr-2021-0047

Other claims from this paper (12)

Intervention effect Red spruce alone increased in height under warming, contingent on CO2 and soil moisture.
Intervention effect Drought increased red spruce mortality by 2%.
Intervention effect Warming increased balsam fir height growth only under certain moisture and CO2 conditions.
Intervention effect Drought reduced balsam fir biomass by 24%.
Intervention effect Drought increased balsam fir mortality by 5%.
Intervention effect Warming did not improve red maple height growth.
Observation Red maple height growth remained 7–50 times that of the conifers.
Observation No red maple mortality was observed.
Intervention effect CO2 enrichment increased growth of droughted seedlings relative to ambient treatment.
Observation Balsam fir was judged least adapted to warming and drought.
Observation Red spruce displayed some positive responses.
Observation The authors suggest red maple may outperform both conifers under warming.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Drought increased red spruce mortality by 2%.

Taxon: red sprucePicea rubense0
Treatment: drought treatmente0
Outcome: mortalitye0
Direction: increasede0
Value: 2%e0

Not reportedComparator

Verbatim

e0
“Under the drought treatment, red spruce biomass was not affected, but mortality increased by 2%”
✓ located verbatim in the source · abstract, characters 453–548

Title

Climate change experiment suggests divergent responses of tree seedlings in eastern North America’s Acadian Forest Region over the 21st century

William R. Vaughn; Anthony R. Taylor; David A. MacLean; et al. Canadian Journal of Forest Research 2021. doi:10.1139/cjfr-2021-0047

Other claims from this paper (12)

Intervention effect Red spruce alone increased in height under warming, contingent on CO2 and soil moisture.
Intervention effect Drought did not affect red spruce biomass.
Intervention effect Warming increased balsam fir height growth only under certain moisture and CO2 conditions.
Intervention effect Drought reduced balsam fir biomass by 24%.
Intervention effect Drought increased balsam fir mortality by 5%.
Intervention effect Warming did not improve red maple height growth.
Observation Red maple height growth remained 7–50 times that of the conifers.
Observation No red maple mortality was observed.
Intervention effect CO2 enrichment increased growth of droughted seedlings relative to ambient treatment.
Observation Balsam fir was judged least adapted to warming and drought.
Observation Red spruce displayed some positive responses.
Observation The authors suggest red maple may outperform both conifers under warming.

Observationauthor interpretationoriginal resultmeasured

Claim · model-written summary

Red spruce displayed some positive responses.

Taxon: red sprucePicea rubense0
Outcome: positive responsese0

Verbatim

e0
“red spruce displayed some positive responses”
✓ located verbatim in the source · abstract, characters 1127–1171

Title

Climate change experiment suggests divergent responses of tree seedlings in eastern North America’s Acadian Forest Region over the 21st century

William R. Vaughn; Anthony R. Taylor; David A. MacLean; et al. Canadian Journal of Forest Research 2021. doi:10.1139/cjfr-2021-0047

Other claims from this paper (12)

Intervention effect Red spruce alone increased in height under warming, contingent on CO2 and soil moisture.
Intervention effect Drought did not affect red spruce biomass.
Intervention effect Drought increased red spruce mortality by 2%.
Intervention effect Warming increased balsam fir height growth only under certain moisture and CO2 conditions.
Intervention effect Drought reduced balsam fir biomass by 24%.
Intervention effect Drought increased balsam fir mortality by 5%.
Intervention effect Warming did not improve red maple height growth.
Observation Red maple height growth remained 7–50 times that of the conifers.
Observation No red maple mortality was observed.
Intervention effect CO2 enrichment increased growth of droughted seedlings relative to ambient treatment.
Observation Balsam fir was judged least adapted to warming and drought.
Observation The authors suggest red maple may outperform both conifers under warming.

Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

Reductions in acidic sulfur pollution were among the two most important factors driving increased red spruce tree growth since ca. 1989.

Taxon: red sprucePicea rubense1
Treatment: reductions in acidic sulfur pollutione2
Outcome: tree growthe2
Direction: increasede2

Verbatim

e1
“red spruce ( Picea rubens Sarg.) trees”
✓ located verbatim in the source · abstract, characters 336–374

e2
“Results reveal the two most important factors driving increased tree growth since ca . 1989 are reductions in acidic sulfur pollution and increases in atmospheric CO 2”
✓ located verbatim in the source · abstract, characters 788–955

Title

Disentangling the effects of acidic air pollution, atmospheric CO₂, and climate change on recent growth of red spruce trees in the Central Appalachian Mountains

Justin M. Mathias; Richard B. Thomas Global Change Biology 2018. doi:10.1111/gcb.14273

Other claims from this paper (9)

Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

Increases in atmospheric CO2 were among the two most important factors driving increased red spruce tree growth since ca. 1989.

Taxon: red sprucePicea rubense1
Treatment: increases in atmospheric CO 2e2
Outcome: tree growthe2
Direction: increasede2

Verbatim

e1
“red spruce ( Picea rubens Sarg.) trees”
✓ located verbatim in the source · abstract, characters 336–374

e2
“Results reveal the two most important factors driving increased tree growth since ca . 1989 are reductions in acidic sulfur pollution and increases in atmospheric CO 2”
✓ located verbatim in the source · abstract, characters 788–955

Title

Disentangling the effects of acidic air pollution, atmospheric CO₂, and climate change on recent growth of red spruce trees in the Central Appalachian Mountains

Justin M. Mathias; Richard B. Thomas Global Change Biology 2018. doi:10.1111/gcb.14273

Other claims from this paper (9)

Observationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Tree ring Δ13C signatures of red spruce increased significantly since 1989.

Taxon: red sprucePicea rubense1
Outcome: tree ring ∆ 13 C signaturese4
Direction: increasede4

Verbatim

e1
“red spruce ( Picea rubens Sarg.) trees”
✓ located verbatim in the source · abstract, characters 336–374

e4
“Tree ring ∆ 13 C signatures increased significantly since 1989”
✓ located verbatim in the source · abstract, characters 1064–1126

Title

Disentangling the effects of acidic air pollution, atmospheric CO₂, and climate change on recent growth of red spruce trees in the Central Appalachian Mountains

Justin M. Mathias; Richard B. Thomas Global Change Biology 2018. doi:10.1111/gcb.14273

Other claims from this paper (9)

Observationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Tree ring δ15N signatures of red spruce declined significantly since 1989.

Taxon: red sprucePicea rubense1
Outcome: tree ring δ 15 N signaturese5
Direction: declinese5

Verbatim

e1
“red spruce ( Picea rubens Sarg.) trees”
✓ located verbatim in the source · abstract, characters 336–374

e5
“concurrently with significant declines in tree ring δ 15 N signatures”
✓ located verbatim in the source · abstract, characters 1128–1197

Title

Disentangling the effects of acidic air pollution, atmospheric CO₂, and climate change on recent growth of red spruce trees in the Central Appalachian Mountains

Justin M. Mathias; Richard B. Thomas Global Change Biology 2018. doi:10.1111/gcb.14273

Other claims from this paper (9)

Observationobservedoriginal resultmeasured

Claim · model-written summary

Intrinsic water use efficiency of red spruce trees increased by about 51% across the 75-year chronology.

Taxon: red sprucePicea rubense6
Outcome: Intrinsic water use efficiencye6
Direction: increasede6
Value: ~51%e6
Qualifier: across the 75‐year chronologye6

Verbatim

e6
“Intrinsic water use efficiency ( i WUE ) of the red spruce trees increased by ~51% across the 75‐year chronology”
✓ located verbatim in the source · abstract, characters 1529–1641

Title

Disentangling the effects of acidic air pollution, atmospheric CO₂, and climate change on recent growth of red spruce trees in the Central Appalachian Mountains

Justin M. Mathias; Richard B. Thomas Global Change Biology 2018. doi:10.1111/gcb.14273

Other claims from this paper (9)

Associationauthor interpretationoriginal resultmeasured

Claim · model-written summary

Intrinsic water use efficiency of red spruce was driven by changes in atmospheric CO2 and acid pollution, but was not linked to recent tree growth increases.

Taxon: red sprucePicea rubense6
Treatment: changes in atmospheric CO 2 and acid pollutione7
Outcome: Intrinsic water use efficiencye6

Not reportedDirection

Verbatim

e6
“Intrinsic water use efficiency ( i WUE ) of the red spruce trees increased by ~51% across the 75‐year chronology”
✓ located verbatim in the source · abstract, characters 1529–1641

e7
“was driven by changes in atmospheric CO 2 and acid pollution”
✓ located verbatim in the source · abstract, characters 1647–1707

Title

Disentangling the effects of acidic air pollution, atmospheric CO₂, and climate change on recent growth of red spruce trees in the Central Appalachian Mountains

Justin M. Mathias; Richard B. Thomas Global Change Biology 2018. doi:10.1111/gcb.14273

Other claims from this paper (9)

Picea rubens 1,555 claims

1,555 claims