Do plant species influence soil CO2 and N2O fluxes in a diverse tropical forest?

Joost L M Van Haren, R. Cosme De Oliveira, Natalia Restrepo-Coupe, Lucy Hutyra, Plinio B. De Camargo, Michael Keller, Scott Saleska

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

To test whether plant species influence greenhouse gas production in diverse ecosystems, we measured wet season soil CO2 and N 2O fluxes close to ∼300 large (>35 cm in diameter at breast height (DBH)) trees of 15 species at three clay-rich forest sites in central Amazonia. We found that soil CO2 fluxes were 38% higher near large trees than at control sites >10 m away from any tree (P < 0.0001). After adjusting for large tree presence, a multiple linear regression of soil temperature, bulk density, and liana DBH explained 19% of remaining CO 2 flux variability. Soil N2O fluxes adjacent to Caryocar villosum, Lecythis lurida, Schefflera morototoni, and Manilkara huberi were 84%-196% greater than Erisma uncinatum and Vochysia maxima, both Vochysiaceae. Tree species identity was the most important explanatory factor for N 2O fluxes, accounting for more than twice the N2O flux variability as all other factors combined. Two observations suggest a mechanism for this finding: (1) sugar addition increased N2O fluxes near C. villosum twice as much (P < 0.05) as near Vochysiaceae and (2) species mean N2O fluxes were strongly negatively correlated with tree growth rate (P = 0.002). These observations imply that through enhanced belowground carbon allocation liana and tree species can stimulate soil CO2 and N 2O fluxes (by enhancing denitrification when carbon limits microbial metabolism). Alternatively, low N2O fluxes potentially result from strong competition of tree species with microbes for nutrients. Species-specific patterns in CO2 and N2O fluxes demonstrate that plant species can influence soil biogeochemical processes in a diverse tropical forest.

Original languageEnglish (US)
Article numberG03010
JournalJournal of Geophysical Research: Space Physics
Volume115
Issue number3
DOIs
StatePublished - 2010

Fingerprint

nitrous oxide
tropical forests
tropical forest
soils
carbon dioxide
Fluxes
Soils
Caryocar villosum
Vochysiaceae
soil
tree and stand measurements
Lecythis
Vochysia
Manilkara
Schefflera
breast
gas production (biological)
carbon
greenhouse gases
Amazonia

ASJC Scopus subject areas

  • Soil Science
  • Forestry
  • Water Science and Technology
  • Palaeontology
  • Atmospheric Science
  • Aquatic Science
  • Ecology

Cite this

Do plant species influence soil CO2 and N2O fluxes in a diverse tropical forest? / Van Haren, Joost L M; De Oliveira, R. Cosme; Restrepo-Coupe, Natalia; Hutyra, Lucy; De Camargo, Plinio B.; Keller, Michael; Saleska, Scott.

In: Journal of Geophysical Research: Space Physics, Vol. 115, No. 3, G03010, 2010.

Research output: Contribution to journalArticle

Van Haren, Joost L M ; De Oliveira, R. Cosme ; Restrepo-Coupe, Natalia ; Hutyra, Lucy ; De Camargo, Plinio B. ; Keller, Michael ; Saleska, Scott. / Do plant species influence soil CO2 and N2O fluxes in a diverse tropical forest?. In: Journal of Geophysical Research: Space Physics. 2010 ; Vol. 115, No. 3.
@article{5cbb7b9efd7340f7a4a560e9f031661d,
title = "Do plant species influence soil CO2 and N2O fluxes in a diverse tropical forest?",
abstract = "To test whether plant species influence greenhouse gas production in diverse ecosystems, we measured wet season soil CO2 and N 2O fluxes close to ∼300 large (>35 cm in diameter at breast height (DBH)) trees of 15 species at three clay-rich forest sites in central Amazonia. We found that soil CO2 fluxes were 38{\%} higher near large trees than at control sites >10 m away from any tree (P < 0.0001). After adjusting for large tree presence, a multiple linear regression of soil temperature, bulk density, and liana DBH explained 19{\%} of remaining CO 2 flux variability. Soil N2O fluxes adjacent to Caryocar villosum, Lecythis lurida, Schefflera morototoni, and Manilkara huberi were 84{\%}-196{\%} greater than Erisma uncinatum and Vochysia maxima, both Vochysiaceae. Tree species identity was the most important explanatory factor for N 2O fluxes, accounting for more than twice the N2O flux variability as all other factors combined. Two observations suggest a mechanism for this finding: (1) sugar addition increased N2O fluxes near C. villosum twice as much (P < 0.05) as near Vochysiaceae and (2) species mean N2O fluxes were strongly negatively correlated with tree growth rate (P = 0.002). These observations imply that through enhanced belowground carbon allocation liana and tree species can stimulate soil CO2 and N 2O fluxes (by enhancing denitrification when carbon limits microbial metabolism). Alternatively, low N2O fluxes potentially result from strong competition of tree species with microbes for nutrients. Species-specific patterns in CO2 and N2O fluxes demonstrate that plant species can influence soil biogeochemical processes in a diverse tropical forest.",
author = "{Van Haren}, {Joost L M} and {De Oliveira}, {R. Cosme} and Natalia Restrepo-Coupe and Lucy Hutyra and {De Camargo}, {Plinio B.} and Michael Keller and Scott Saleska",
year = "2010",
doi = "10.1029/2009JG001231",
language = "English (US)",
volume = "115",
journal = "Journal of Geophysical Research: Space Physics",
issn = "2169-9380",
publisher = "Wiley-Blackwell",
number = "3",

}

TY - JOUR

T1 - Do plant species influence soil CO2 and N2O fluxes in a diverse tropical forest?

AU - Van Haren, Joost L M

AU - De Oliveira, R. Cosme

AU - Restrepo-Coupe, Natalia

AU - Hutyra, Lucy

AU - De Camargo, Plinio B.

AU - Keller, Michael

AU - Saleska, Scott

PY - 2010

Y1 - 2010

N2 - To test whether plant species influence greenhouse gas production in diverse ecosystems, we measured wet season soil CO2 and N 2O fluxes close to ∼300 large (>35 cm in diameter at breast height (DBH)) trees of 15 species at three clay-rich forest sites in central Amazonia. We found that soil CO2 fluxes were 38% higher near large trees than at control sites >10 m away from any tree (P < 0.0001). After adjusting for large tree presence, a multiple linear regression of soil temperature, bulk density, and liana DBH explained 19% of remaining CO 2 flux variability. Soil N2O fluxes adjacent to Caryocar villosum, Lecythis lurida, Schefflera morototoni, and Manilkara huberi were 84%-196% greater than Erisma uncinatum and Vochysia maxima, both Vochysiaceae. Tree species identity was the most important explanatory factor for N 2O fluxes, accounting for more than twice the N2O flux variability as all other factors combined. Two observations suggest a mechanism for this finding: (1) sugar addition increased N2O fluxes near C. villosum twice as much (P < 0.05) as near Vochysiaceae and (2) species mean N2O fluxes were strongly negatively correlated with tree growth rate (P = 0.002). These observations imply that through enhanced belowground carbon allocation liana and tree species can stimulate soil CO2 and N 2O fluxes (by enhancing denitrification when carbon limits microbial metabolism). Alternatively, low N2O fluxes potentially result from strong competition of tree species with microbes for nutrients. Species-specific patterns in CO2 and N2O fluxes demonstrate that plant species can influence soil biogeochemical processes in a diverse tropical forest.

AB - To test whether plant species influence greenhouse gas production in diverse ecosystems, we measured wet season soil CO2 and N 2O fluxes close to ∼300 large (>35 cm in diameter at breast height (DBH)) trees of 15 species at three clay-rich forest sites in central Amazonia. We found that soil CO2 fluxes were 38% higher near large trees than at control sites >10 m away from any tree (P < 0.0001). After adjusting for large tree presence, a multiple linear regression of soil temperature, bulk density, and liana DBH explained 19% of remaining CO 2 flux variability. Soil N2O fluxes adjacent to Caryocar villosum, Lecythis lurida, Schefflera morototoni, and Manilkara huberi were 84%-196% greater than Erisma uncinatum and Vochysia maxima, both Vochysiaceae. Tree species identity was the most important explanatory factor for N 2O fluxes, accounting for more than twice the N2O flux variability as all other factors combined. Two observations suggest a mechanism for this finding: (1) sugar addition increased N2O fluxes near C. villosum twice as much (P < 0.05) as near Vochysiaceae and (2) species mean N2O fluxes were strongly negatively correlated with tree growth rate (P = 0.002). These observations imply that through enhanced belowground carbon allocation liana and tree species can stimulate soil CO2 and N 2O fluxes (by enhancing denitrification when carbon limits microbial metabolism). Alternatively, low N2O fluxes potentially result from strong competition of tree species with microbes for nutrients. Species-specific patterns in CO2 and N2O fluxes demonstrate that plant species can influence soil biogeochemical processes in a diverse tropical forest.

UR - http://www.scopus.com/inward/record.url?scp=77955546969&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77955546969&partnerID=8YFLogxK

U2 - 10.1029/2009JG001231

DO - 10.1029/2009JG001231

M3 - Article

VL - 115

JO - Journal of Geophysical Research: Space Physics

JF - Journal of Geophysical Research: Space Physics

SN - 2169-9380

IS - 3

M1 - G03010

ER -