Long-term response of the nematode community to elevated atmospheric CO 2 in a temperate dry grassland soil

P. Nagy, G. Bakonyi, E. Péli, I. Sonnemann, Z. Tuba

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Long-term effects of the elevated atmospheric CO 2 on biosphere have been in focus of research since the last few decades. In this experiment undisturbed soil monoliths of loess grassland were exposed to an elevated CO 2 environment (twotimes the ambient CO 2 level) for a period of six years with the aid of the open top chamber method. Control without a chamber and CO 2 elevation was applied as well. Elevated CO 2 level had very little impact on soil food web. It did not influence either root and microbial biomass or microbial and nematode community structure. The only significant response was that density of the bacterial feeder genus Heterocephalobus increased in the chamber with elevated CO 2 concentration. Application of the open top chambers initiated more changes on nematodes than the elevated CO 2 level. Open top chamber (OTC) method decreased nematode density (total and plant feeder as well) to less than half of the original level. Negative effect was found on the genus level in the case of fungal feeder Aphelenchoides, plant feeder Helicotylenchus and Paratylenchus. It is very likely that the significantly lower belowground root biomass and partly its decreased quality reflected by the increased C/N ratio are the main responsible factors for the lower density of the plant feeder nematodes in the plots of chambers. According to diversity profiles, MI and MI(2-5) parameters, nematode communities in the open top chambers (both on ambient and elevated CO 2 level) seem to be more structured than those under normal circumstances six years after start of the experiment.

Original languageEnglish
Pages (from-to)167-173
Number of pages7
JournalCommunity Ecology
Volume9
Issue numberSUPPL. 1
DOIs
Publication statusPublished - 2008

Fingerprint

grassland soil
grassland soils
open-top chamber
nematode
Nematoda
Paratylenchus
Aphelenchoides
Helicotylenchus
soil food webs
loess soils
biomass
plant density
carbon nitrogen ratio
biosphere
microbial biomass
loess
food web
long term effects
community structure
soil

Keywords

  • Community structure
  • Elevated CO
  • Nematodes
  • Root biomass

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Ecology

Cite this

Long-term response of the nematode community to elevated atmospheric CO 2 in a temperate dry grassland soil. / Nagy, P.; Bakonyi, G.; Péli, E.; Sonnemann, I.; Tuba, Z.

In: Community Ecology, Vol. 9, No. SUPPL. 1, 2008, p. 167-173.

Research output: Contribution to journalArticle

@article{7f68edb19b9b4594a844011188af9996,
title = "Long-term response of the nematode community to elevated atmospheric CO 2 in a temperate dry grassland soil",
abstract = "Long-term effects of the elevated atmospheric CO 2 on biosphere have been in focus of research since the last few decades. In this experiment undisturbed soil monoliths of loess grassland were exposed to an elevated CO 2 environment (twotimes the ambient CO 2 level) for a period of six years with the aid of the open top chamber method. Control without a chamber and CO 2 elevation was applied as well. Elevated CO 2 level had very little impact on soil food web. It did not influence either root and microbial biomass or microbial and nematode community structure. The only significant response was that density of the bacterial feeder genus Heterocephalobus increased in the chamber with elevated CO 2 concentration. Application of the open top chambers initiated more changes on nematodes than the elevated CO 2 level. Open top chamber (OTC) method decreased nematode density (total and plant feeder as well) to less than half of the original level. Negative effect was found on the genus level in the case of fungal feeder Aphelenchoides, plant feeder Helicotylenchus and Paratylenchus. It is very likely that the significantly lower belowground root biomass and partly its decreased quality reflected by the increased C/N ratio are the main responsible factors for the lower density of the plant feeder nematodes in the plots of chambers. According to diversity profiles, MI and MI(2-5) parameters, nematode communities in the open top chambers (both on ambient and elevated CO 2 level) seem to be more structured than those under normal circumstances six years after start of the experiment.",
keywords = "Community structure, Elevated CO, Nematodes, Root biomass",
author = "P. Nagy and G. Bakonyi and E. P{\'e}li and I. Sonnemann and Z. Tuba",
year = "2008",
doi = "10.1556/ComEc.9.2008.S.22",
language = "English",
volume = "9",
pages = "167--173",
journal = "Community Ecology",
issn = "1585-8553",
publisher = "Akademiai Kiado",
number = "SUPPL. 1",

}

TY - JOUR

T1 - Long-term response of the nematode community to elevated atmospheric CO 2 in a temperate dry grassland soil

AU - Nagy, P.

AU - Bakonyi, G.

AU - Péli, E.

AU - Sonnemann, I.

AU - Tuba, Z.

PY - 2008

Y1 - 2008

N2 - Long-term effects of the elevated atmospheric CO 2 on biosphere have been in focus of research since the last few decades. In this experiment undisturbed soil monoliths of loess grassland were exposed to an elevated CO 2 environment (twotimes the ambient CO 2 level) for a period of six years with the aid of the open top chamber method. Control without a chamber and CO 2 elevation was applied as well. Elevated CO 2 level had very little impact on soil food web. It did not influence either root and microbial biomass or microbial and nematode community structure. The only significant response was that density of the bacterial feeder genus Heterocephalobus increased in the chamber with elevated CO 2 concentration. Application of the open top chambers initiated more changes on nematodes than the elevated CO 2 level. Open top chamber (OTC) method decreased nematode density (total and plant feeder as well) to less than half of the original level. Negative effect was found on the genus level in the case of fungal feeder Aphelenchoides, plant feeder Helicotylenchus and Paratylenchus. It is very likely that the significantly lower belowground root biomass and partly its decreased quality reflected by the increased C/N ratio are the main responsible factors for the lower density of the plant feeder nematodes in the plots of chambers. According to diversity profiles, MI and MI(2-5) parameters, nematode communities in the open top chambers (both on ambient and elevated CO 2 level) seem to be more structured than those under normal circumstances six years after start of the experiment.

AB - Long-term effects of the elevated atmospheric CO 2 on biosphere have been in focus of research since the last few decades. In this experiment undisturbed soil monoliths of loess grassland were exposed to an elevated CO 2 environment (twotimes the ambient CO 2 level) for a period of six years with the aid of the open top chamber method. Control without a chamber and CO 2 elevation was applied as well. Elevated CO 2 level had very little impact on soil food web. It did not influence either root and microbial biomass or microbial and nematode community structure. The only significant response was that density of the bacterial feeder genus Heterocephalobus increased in the chamber with elevated CO 2 concentration. Application of the open top chambers initiated more changes on nematodes than the elevated CO 2 level. Open top chamber (OTC) method decreased nematode density (total and plant feeder as well) to less than half of the original level. Negative effect was found on the genus level in the case of fungal feeder Aphelenchoides, plant feeder Helicotylenchus and Paratylenchus. It is very likely that the significantly lower belowground root biomass and partly its decreased quality reflected by the increased C/N ratio are the main responsible factors for the lower density of the plant feeder nematodes in the plots of chambers. According to diversity profiles, MI and MI(2-5) parameters, nematode communities in the open top chambers (both on ambient and elevated CO 2 level) seem to be more structured than those under normal circumstances six years after start of the experiment.

KW - Community structure

KW - Elevated CO

KW - Nematodes

KW - Root biomass

UR - http://www.scopus.com/inward/record.url?scp=84867363826&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84867363826&partnerID=8YFLogxK

U2 - 10.1556/ComEc.9.2008.S.22

DO - 10.1556/ComEc.9.2008.S.22

M3 - Article

VL - 9

SP - 167

EP - 173

JO - Community Ecology

JF - Community Ecology

SN - 1585-8553

IS - SUPPL. 1

ER -