Elevated atmospheric CO 2 stimulates above ground biomass in a fire-regenerated scrub-oak ecosystem

Paul Dijkstra, Graham Hymus, Debra Colavito, David A. Vieglais, Christina M. Cundari, David P. Johnson, Bruce A Hungate, C. Ross Hinkle, Bert G. Drake

Research output: Contribution to journalArticle

76 Citations (Scopus)

Abstract

The effect of elevated atmospheric CO 2 concentration (C a) on the aboveground biomass of three oak species, Quercus myrtifolia, Q. geminata, and Q. chapmanii, was estimated nondestructively using allometric relationships between stem diameter and aboveground biomass after four years of experimental treatment in a naturally fire-regenerated scrub-oak ecosystem. After burning a stand of scruboak vegetation, re-growing plants were exposed to either current ambient (379 μL L -1 CO 2) or elevated (704 μL L -1 CO 2) C a in 16 open-top chambers over a four-year period, and measurements of stem diameter were carried out annually on all oak shoots within each chamber. Elevated C a significantly increased above-ground biomass, expressed either per unit ground area or per shoot; elevated C a had no effect on shoot density. The relative effect of elevated C a on aboveground biomass increased each year of the study from 44% (May 96-Jan 97), to 55% (Jan 97-Jan 98), 66% (Jan 98-Jan 99), and 75% (Jan 99-Jan 00). The effect of elevated C a was species specific: elevated C a significantly increased aboveground biomass of the dominant species, Q. myrtifolia, and tended to increase aboveground biomass of Q. chapmanii, but had no effect on aboveground biomass of the subdominant, Q. geminata. These results show that rising atmospheric CO 2 has the potential to stimulate aboveground biomass production in ecosystems dominated by woody species, and that species-specific growth responses could, in the long term, alter the composition of the scrub-oak community.

Original languageEnglish (US)
Pages (from-to)90-103
Number of pages14
JournalGlobal Change Biology
Volume8
Issue number1
DOIs
StatePublished - 2002

Fingerprint

scrub
Carbon Monoxide
aboveground biomass
Ecosystems
Fires
Biomass
ecosystem
shoot
stem
open-top chamber
oak
growth response
effect
vegetation
Chemical analysis

Keywords

  • Biomass
  • Elevated CO
  • Florida scrub
  • Natural forest
  • Q. chapmanii
  • Q. geminata
  • Quercus myrtifolia

ASJC Scopus subject areas

  • Ecology
  • Global and Planetary Change
  • Environmental Science(all)
  • Environmental Chemistry

Cite this

Elevated atmospheric CO 2 stimulates above ground biomass in a fire-regenerated scrub-oak ecosystem. / Dijkstra, Paul; Hymus, Graham; Colavito, Debra; Vieglais, David A.; Cundari, Christina M.; Johnson, David P.; Hungate, Bruce A; Hinkle, C. Ross; Drake, Bert G.

In: Global Change Biology, Vol. 8, No. 1, 2002, p. 90-103.

Research output: Contribution to journalArticle

Dijkstra, Paul ; Hymus, Graham ; Colavito, Debra ; Vieglais, David A. ; Cundari, Christina M. ; Johnson, David P. ; Hungate, Bruce A ; Hinkle, C. Ross ; Drake, Bert G. / Elevated atmospheric CO 2 stimulates above ground biomass in a fire-regenerated scrub-oak ecosystem. In: Global Change Biology. 2002 ; Vol. 8, No. 1. pp. 90-103.
@article{2116315d316f43fb85e1b1b070e3a319,
title = "Elevated atmospheric CO 2 stimulates above ground biomass in a fire-regenerated scrub-oak ecosystem",
abstract = "The effect of elevated atmospheric CO 2 concentration (C a) on the aboveground biomass of three oak species, Quercus myrtifolia, Q. geminata, and Q. chapmanii, was estimated nondestructively using allometric relationships between stem diameter and aboveground biomass after four years of experimental treatment in a naturally fire-regenerated scrub-oak ecosystem. After burning a stand of scruboak vegetation, re-growing plants were exposed to either current ambient (379 μL L -1 CO 2) or elevated (704 μL L -1 CO 2) C a in 16 open-top chambers over a four-year period, and measurements of stem diameter were carried out annually on all oak shoots within each chamber. Elevated C a significantly increased above-ground biomass, expressed either per unit ground area or per shoot; elevated C a had no effect on shoot density. The relative effect of elevated C a on aboveground biomass increased each year of the study from 44{\%} (May 96-Jan 97), to 55{\%} (Jan 97-Jan 98), 66{\%} (Jan 98-Jan 99), and 75{\%} (Jan 99-Jan 00). The effect of elevated C a was species specific: elevated C a significantly increased aboveground biomass of the dominant species, Q. myrtifolia, and tended to increase aboveground biomass of Q. chapmanii, but had no effect on aboveground biomass of the subdominant, Q. geminata. These results show that rising atmospheric CO 2 has the potential to stimulate aboveground biomass production in ecosystems dominated by woody species, and that species-specific growth responses could, in the long term, alter the composition of the scrub-oak community.",
keywords = "Biomass, Elevated CO, Florida scrub, Natural forest, Q. chapmanii, Q. geminata, Quercus myrtifolia",
author = "Paul Dijkstra and Graham Hymus and Debra Colavito and Vieglais, {David A.} and Cundari, {Christina M.} and Johnson, {David P.} and Hungate, {Bruce A} and Hinkle, {C. Ross} and Drake, {Bert G.}",
year = "2002",
doi = "10.1046/j.1354-1013.2001.00458.x",
language = "English (US)",
volume = "8",
pages = "90--103",
journal = "Global Change Biology",
issn = "1354-1013",
publisher = "Wiley-Blackwell",
number = "1",

}

TY - JOUR

T1 - Elevated atmospheric CO 2 stimulates above ground biomass in a fire-regenerated scrub-oak ecosystem

AU - Dijkstra, Paul

AU - Hymus, Graham

AU - Colavito, Debra

AU - Vieglais, David A.

AU - Cundari, Christina M.

AU - Johnson, David P.

AU - Hungate, Bruce A

AU - Hinkle, C. Ross

AU - Drake, Bert G.

PY - 2002

Y1 - 2002

N2 - The effect of elevated atmospheric CO 2 concentration (C a) on the aboveground biomass of three oak species, Quercus myrtifolia, Q. geminata, and Q. chapmanii, was estimated nondestructively using allometric relationships between stem diameter and aboveground biomass after four years of experimental treatment in a naturally fire-regenerated scrub-oak ecosystem. After burning a stand of scruboak vegetation, re-growing plants were exposed to either current ambient (379 μL L -1 CO 2) or elevated (704 μL L -1 CO 2) C a in 16 open-top chambers over a four-year period, and measurements of stem diameter were carried out annually on all oak shoots within each chamber. Elevated C a significantly increased above-ground biomass, expressed either per unit ground area or per shoot; elevated C a had no effect on shoot density. The relative effect of elevated C a on aboveground biomass increased each year of the study from 44% (May 96-Jan 97), to 55% (Jan 97-Jan 98), 66% (Jan 98-Jan 99), and 75% (Jan 99-Jan 00). The effect of elevated C a was species specific: elevated C a significantly increased aboveground biomass of the dominant species, Q. myrtifolia, and tended to increase aboveground biomass of Q. chapmanii, but had no effect on aboveground biomass of the subdominant, Q. geminata. These results show that rising atmospheric CO 2 has the potential to stimulate aboveground biomass production in ecosystems dominated by woody species, and that species-specific growth responses could, in the long term, alter the composition of the scrub-oak community.

AB - The effect of elevated atmospheric CO 2 concentration (C a) on the aboveground biomass of three oak species, Quercus myrtifolia, Q. geminata, and Q. chapmanii, was estimated nondestructively using allometric relationships between stem diameter and aboveground biomass after four years of experimental treatment in a naturally fire-regenerated scrub-oak ecosystem. After burning a stand of scruboak vegetation, re-growing plants were exposed to either current ambient (379 μL L -1 CO 2) or elevated (704 μL L -1 CO 2) C a in 16 open-top chambers over a four-year period, and measurements of stem diameter were carried out annually on all oak shoots within each chamber. Elevated C a significantly increased above-ground biomass, expressed either per unit ground area or per shoot; elevated C a had no effect on shoot density. The relative effect of elevated C a on aboveground biomass increased each year of the study from 44% (May 96-Jan 97), to 55% (Jan 97-Jan 98), 66% (Jan 98-Jan 99), and 75% (Jan 99-Jan 00). The effect of elevated C a was species specific: elevated C a significantly increased aboveground biomass of the dominant species, Q. myrtifolia, and tended to increase aboveground biomass of Q. chapmanii, but had no effect on aboveground biomass of the subdominant, Q. geminata. These results show that rising atmospheric CO 2 has the potential to stimulate aboveground biomass production in ecosystems dominated by woody species, and that species-specific growth responses could, in the long term, alter the composition of the scrub-oak community.

KW - Biomass

KW - Elevated CO

KW - Florida scrub

KW - Natural forest

KW - Q. chapmanii

KW - Q. geminata

KW - Quercus myrtifolia

UR - http://www.scopus.com/inward/record.url?scp=0036138423&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0036138423&partnerID=8YFLogxK

U2 - 10.1046/j.1354-1013.2001.00458.x

DO - 10.1046/j.1354-1013.2001.00458.x

M3 - Article

AN - SCOPUS:0036138423

VL - 8

SP - 90

EP - 103

JO - Global Change Biology

JF - Global Change Biology

SN - 1354-1013

IS - 1

ER -