Soil nematode community structure as affected by temperature and moisture in a temperate semiarid shrubland

G. Bakonyi, Péter Nagy, Edit Kovács-Láng, Eszter Kovács, Sándor Barabás, Viktória Répási, Anikó Seres

Research output: Contribution to journalArticle

52 Citations (Scopus)

Abstract

Nematodes are key agents in important soil processes, such as decomposition, mineralization and nutrient cycling. Therefore, alterations of the nematode community structure induced by global change may have a considerable influence on ecosystem functioning. However, it is not clear whether minor changes in soil temperature and/or moisture have any significant effect on nematode community structure. A field experiment was performed in a mosaic of open sand grassland and Juniper-Poplar woodland (VULCAN Project). Soil temperature and moisture were modified to the extent expected for the near future due to global changes. Community diversity and multivariate structure of the nematode community proved to be more sensitive to minute changes in soil temperature and moisture than different indices, such as specific richness (SR), maturity index (MI), plant parasite index (PPI), enrichment index (EI), channel index (CI), fungal feeder to bacterial feeder ratio (F/B) and nematode channel ratio (NCR). Nematode genera with high densities (>0.1 individual g-1 soil) were better indicators of the temperature and moisture changes than those of low density (-1 soil) in this sandy soil. Both drying and warming had significant influence on low density (Wilk's lambda: 0.02) and high density (Wilk's lambda: 0.002) genera according to canonical variate analysis. Cephalobus and Plectus were associated with the dried plots, while Cervidellus, Ditylenchus, Eudorylaimus, Seinura and Thonus were favoured by warming. Drying induced the development of a more structured nematode community in the bare soil compared to the control. Drying and warming effects on the soil nematode community were most pronounced in bare soil, less so in soil under poplar, while no significant effect was found in the fescue grass soil.

Original languageEnglish
Pages (from-to)31-40
Number of pages10
JournalApplied Soil Ecology
Volume37
Issue number1-2
DOIs
Publication statusPublished - Oct 2007

Fingerprint

soil nematodes
shrubland
shrublands
nematode
community structure
Soil
moisture
Nematoda
Temperature
soil
temperature
soil temperature
drying
global change
warming
bare soil
Eudorylaimus
Cephalobus
Plectus
Ditylenchus

Keywords

  • Global change
  • Nematode community
  • Soil drying
  • Soil warming

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Soil Science
  • Ecology

Cite this

Soil nematode community structure as affected by temperature and moisture in a temperate semiarid shrubland. / Bakonyi, G.; Nagy, Péter; Kovács-Láng, Edit; Kovács, Eszter; Barabás, Sándor; Répási, Viktória; Seres, Anikó.

In: Applied Soil Ecology, Vol. 37, No. 1-2, 10.2007, p. 31-40.

Research output: Contribution to journalArticle

Bakonyi, G. ; Nagy, Péter ; Kovács-Láng, Edit ; Kovács, Eszter ; Barabás, Sándor ; Répási, Viktória ; Seres, Anikó. / Soil nematode community structure as affected by temperature and moisture in a temperate semiarid shrubland. In: Applied Soil Ecology. 2007 ; Vol. 37, No. 1-2. pp. 31-40.
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