Effects of elevated CO2 and herbivore damage on litter quality in a scrub oak ecosystem

Myra C. Hall, Peter Stiling, Bruce A Hungate, Bert G. Drake, Mark D. Hunter

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

Atmospheric CO2 concentrations have increased dramatically over the last century and continuing increases are expected to have significant, though currently unpredictable, effects on ecosystems. One important process that may be affected by elevated CO2 is leaf litter decomposition. We investigated the interactions among atmospheric CO2, herbivory, and litter quality within a scrub oak community at the Kennedy Space Center, Florida. Leaf litter chemistry in 16 plots of open-top chambers was followed for 3 years; eight were exposed to ambient levels of CO2, and eight were exposed to elevated levels of CO2 (ambient + 350 ppmV). We focused on three dominant oak species, Quercus geminata, Quercus myrtifolia, and Quercus chapmanii. Condensed tannin concentrations in oak leaf litter were higher under elevated CO2. Litter chemistry differed among all plant species except for condensed tannins. Phenolic concentrations were lower, whereas lignin concentrations and lignin/nitrogen ratios were higher in herbivore-damaged litter independent of CO2 concentration. However, changes in litter chemistry from year to year were far larger than effects of CO2 or insect damage, suggesting that these may have only minor effects on litter decomposition.

Original languageEnglish (US)
Pages (from-to)2343-2356
Number of pages14
JournalJournal of Chemical Ecology
Volume31
Issue number10
DOIs
StatePublished - Oct 2005

Fingerprint

Quercus
Herbivory
scrub
shrublands
Ecosystems
Ecosystem
herbivore
Proanthocyanidins
litter
herbivores
Lignin
plant litter
damage
chemistry
leaf litter
ecosystems
ecosystem
proanthocyanidins
Decomposition
tannin

Keywords

  • Elevated CO
  • Herbivory
  • Kennedy Space Center
  • Litter quality
  • Quercus chapmanii
  • Quercus geminata
  • Quercus myrtifolia

ASJC Scopus subject areas

  • Ecology
  • Biochemistry, Genetics and Molecular Biology(all)
  • Biochemistry

Cite this

Effects of elevated CO2 and herbivore damage on litter quality in a scrub oak ecosystem. / Hall, Myra C.; Stiling, Peter; Hungate, Bruce A; Drake, Bert G.; Hunter, Mark D.

In: Journal of Chemical Ecology, Vol. 31, No. 10, 10.2005, p. 2343-2356.

Research output: Contribution to journalArticle

Hall, Myra C. ; Stiling, Peter ; Hungate, Bruce A ; Drake, Bert G. ; Hunter, Mark D. / Effects of elevated CO2 and herbivore damage on litter quality in a scrub oak ecosystem. In: Journal of Chemical Ecology. 2005 ; Vol. 31, No. 10. pp. 2343-2356.
@article{0b273fb2dd714763ad1c603e57d13b72,
title = "Effects of elevated CO2 and herbivore damage on litter quality in a scrub oak ecosystem",
abstract = "Atmospheric CO2 concentrations have increased dramatically over the last century and continuing increases are expected to have significant, though currently unpredictable, effects on ecosystems. One important process that may be affected by elevated CO2 is leaf litter decomposition. We investigated the interactions among atmospheric CO2, herbivory, and litter quality within a scrub oak community at the Kennedy Space Center, Florida. Leaf litter chemistry in 16 plots of open-top chambers was followed for 3 years; eight were exposed to ambient levels of CO2, and eight were exposed to elevated levels of CO2 (ambient + 350 ppmV). We focused on three dominant oak species, Quercus geminata, Quercus myrtifolia, and Quercus chapmanii. Condensed tannin concentrations in oak leaf litter were higher under elevated CO2. Litter chemistry differed among all plant species except for condensed tannins. Phenolic concentrations were lower, whereas lignin concentrations and lignin/nitrogen ratios were higher in herbivore-damaged litter independent of CO2 concentration. However, changes in litter chemistry from year to year were far larger than effects of CO2 or insect damage, suggesting that these may have only minor effects on litter decomposition.",
keywords = "Elevated CO, Herbivory, Kennedy Space Center, Litter quality, Quercus chapmanii, Quercus geminata, Quercus myrtifolia",
author = "Hall, {Myra C.} and Peter Stiling and Hungate, {Bruce A} and Drake, {Bert G.} and Hunter, {Mark D.}",
year = "2005",
month = "10",
doi = "10.1007/s10886-005-7105-0",
language = "English (US)",
volume = "31",
pages = "2343--2356",
journal = "Journal of Chemical Ecology",
issn = "0098-0331",
publisher = "Springer New York",
number = "10",

}

TY - JOUR

T1 - Effects of elevated CO2 and herbivore damage on litter quality in a scrub oak ecosystem

AU - Hall, Myra C.

AU - Stiling, Peter

AU - Hungate, Bruce A

AU - Drake, Bert G.

AU - Hunter, Mark D.

PY - 2005/10

Y1 - 2005/10

N2 - Atmospheric CO2 concentrations have increased dramatically over the last century and continuing increases are expected to have significant, though currently unpredictable, effects on ecosystems. One important process that may be affected by elevated CO2 is leaf litter decomposition. We investigated the interactions among atmospheric CO2, herbivory, and litter quality within a scrub oak community at the Kennedy Space Center, Florida. Leaf litter chemistry in 16 plots of open-top chambers was followed for 3 years; eight were exposed to ambient levels of CO2, and eight were exposed to elevated levels of CO2 (ambient + 350 ppmV). We focused on three dominant oak species, Quercus geminata, Quercus myrtifolia, and Quercus chapmanii. Condensed tannin concentrations in oak leaf litter were higher under elevated CO2. Litter chemistry differed among all plant species except for condensed tannins. Phenolic concentrations were lower, whereas lignin concentrations and lignin/nitrogen ratios were higher in herbivore-damaged litter independent of CO2 concentration. However, changes in litter chemistry from year to year were far larger than effects of CO2 or insect damage, suggesting that these may have only minor effects on litter decomposition.

AB - Atmospheric CO2 concentrations have increased dramatically over the last century and continuing increases are expected to have significant, though currently unpredictable, effects on ecosystems. One important process that may be affected by elevated CO2 is leaf litter decomposition. We investigated the interactions among atmospheric CO2, herbivory, and litter quality within a scrub oak community at the Kennedy Space Center, Florida. Leaf litter chemistry in 16 plots of open-top chambers was followed for 3 years; eight were exposed to ambient levels of CO2, and eight were exposed to elevated levels of CO2 (ambient + 350 ppmV). We focused on three dominant oak species, Quercus geminata, Quercus myrtifolia, and Quercus chapmanii. Condensed tannin concentrations in oak leaf litter were higher under elevated CO2. Litter chemistry differed among all plant species except for condensed tannins. Phenolic concentrations were lower, whereas lignin concentrations and lignin/nitrogen ratios were higher in herbivore-damaged litter independent of CO2 concentration. However, changes in litter chemistry from year to year were far larger than effects of CO2 or insect damage, suggesting that these may have only minor effects on litter decomposition.

KW - Elevated CO

KW - Herbivory

KW - Kennedy Space Center

KW - Litter quality

KW - Quercus chapmanii

KW - Quercus geminata

KW - Quercus myrtifolia

UR - http://www.scopus.com/inward/record.url?scp=26244437127&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=26244437127&partnerID=8YFLogxK

U2 - 10.1007/s10886-005-7105-0

DO - 10.1007/s10886-005-7105-0

M3 - Article

VL - 31

SP - 2343

EP - 2356

JO - Journal of Chemical Ecology

JF - Journal of Chemical Ecology

SN - 0098-0331

IS - 10

ER -