Elevated CO2 enrichment induces a differential biomass response in a mixed species temperate forest plantation

Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

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Elevated CO2 enrichment induces a differential biomass response in a mixed species temperate forest plantation. / Godbold, D.L.; Smith, A.R.; Lukac, M. et al.
Yn: New Phytologist, Cyfrol 198, Rhif 1, 01.04.2013, t. 156-168.

Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

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Godbold DL, Smith AR, Lukac M, Hood R, Healey JR, Miglietta FG. Elevated CO2 enrichment induces a differential biomass response in a mixed species temperate forest plantation. New Phytologist. 2013 Ebr 1;198(1):156-168. doi: 10.1111/nph.12136

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Godbold, D.L. ; Smith, A.R. ; Lukac, M. et al. / Elevated CO2 enrichment induces a differential biomass response in a mixed species temperate forest plantation. Yn: New Phytologist. 2013 ; Cyfrol 198, Rhif 1. tt. 156-168.

RIS

TY - JOUR

T1 - Elevated CO2 enrichment induces a differential biomass response in a mixed species temperate forest plantation

AU - Godbold, D.L.

AU - Smith, A.R.

AU - Lukac, M.

AU - Hood, R.

AU - Healey, J.R.

AU - Miglietta, F.G.

PY - 2013/4/1

Y1 - 2013/4/1

N2 - Summary In a free-air carbon dioxide (CO2) enrichment study (BangorFACE), Alnus glutinosa, Betula pendula and Fagus sylvatica were planted in areas of one-, two- and three-species mixtures (n = 4). The trees were exposed to ambient or elevated CO2 (580 μmol mol−1) for 4 yr, and aboveground growth characteristics were measured. In monoculture, the mean effect of CO2 enrichment on aboveground woody biomass was + 29, + 22 and + 16% for A. glutinosa, F. sylvatica and B. pendula, respectively. When the same species were grown in polyculture, the response to CO2 switched to + 10, + 7 and 0% for A. glutinosa, B. pendula and F. sylvatica, respectively. In ambient atmosphere, our species grown in polyculture increased aboveground woody biomass from 12.9 ± 1.4 to 18.9 ± 1.0 kg m−2, whereas, in an elevated CO2 atmosphere, aboveground woody biomass increased from 15.2 ± 0.6 to 20.2 ± 0.6 kg m−2. The overyielding effect of polyculture was smaller (+ 7%) in elevated CO2 than in an ambient atmosphere (+ 18%). Our results show that the aboveground response to elevated CO2 is affected significantly by intra- and interspecific competition, and that the elevated CO2 response may be reduced in forest communities comprising tree species with contrasting functional traits.

AB - Summary In a free-air carbon dioxide (CO2) enrichment study (BangorFACE), Alnus glutinosa, Betula pendula and Fagus sylvatica were planted in areas of one-, two- and three-species mixtures (n = 4). The trees were exposed to ambient or elevated CO2 (580 μmol mol−1) for 4 yr, and aboveground growth characteristics were measured. In monoculture, the mean effect of CO2 enrichment on aboveground woody biomass was + 29, + 22 and + 16% for A. glutinosa, F. sylvatica and B. pendula, respectively. When the same species were grown in polyculture, the response to CO2 switched to + 10, + 7 and 0% for A. glutinosa, B. pendula and F. sylvatica, respectively. In ambient atmosphere, our species grown in polyculture increased aboveground woody biomass from 12.9 ± 1.4 to 18.9 ± 1.0 kg m−2, whereas, in an elevated CO2 atmosphere, aboveground woody biomass increased from 15.2 ± 0.6 to 20.2 ± 0.6 kg m−2. The overyielding effect of polyculture was smaller (+ 7%) in elevated CO2 than in an ambient atmosphere (+ 18%). Our results show that the aboveground response to elevated CO2 is affected significantly by intra- and interspecific competition, and that the elevated CO2 response may be reduced in forest communities comprising tree species with contrasting functional traits.

U2 - 10.1111/nph.12136

DO - 10.1111/nph.12136

M3 - Article

VL - 198

SP - 156

EP - 168

JO - New Phytologist

JF - New Phytologist

SN - 0028-646X

IS - 1

ER -