Spatial patterns of variation in the composition and structure of nematode communities in relation to different microhabitats: a case study of Quercus dalechampii Ten. forest

Lazarova, Stela; Goede, R.G.M. de; Peneva, Vlada; Bongers, T.

doi:10.1016/j.soilbio.2004.01.005

Cited by 35 publications

(14 citation statements)

References 35 publications

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“…Our results agree with Deming et al (2006) and Zhang et al (2007) who recorded a gradual decrease of total abundance of nematodes with an increase of soil depth in several ecosystems. A similar gradual reduction of abundance of nematodes with increase of soil depth was also observed in various types of soil (Valocká & Sabová 1997;Lazarova, 2004). However, the total number of nematodes was larger in soil with perennial undisturbed natural pasture (Valocká & Sabová, 1997) or grass and lucerne stands (Sohlenius et al, 1987) than in our hop gardens, characterized by perennial plants with a high level of disturbance agricultural practices such as tillage, cultivation and organic fertilization.…”

Section: Resultssupporting

confidence: 82%

Seasonal fluctuations of the nematode communities in a hop garden soil

2010

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A study on the seasonal fluctuation of nematode population was conducted during three vegetation periods (2005 – 2007), at 20 and 40 cm soil depth, from May to October, in a hop garden at Nemšová (Slovak Republic). The seasonal fluctuation of the nematode population was related to temperature and rainfall. At 20 cm soil depth of each year, the largest nematode population was recorded in July, and the smallest from July to October. At 40 cm soil depth, nematode abundance was not significantly different between the years 2006 and 2007. In general, at the same depth, a decrease of nematode abundance was observed from May to October. The soil nematode community was rich in bacteriovorous nematodes, especially in the top 20 cm soil. The genus Rhabditis was the eudominant taxon at both soil depths. This genus with the genera Cephalobus, Heterodera, Merlinius and Aglenchus represented the 50 % of the total nematode population at 20 cm soil depth and with the genera Cephalobus, Helicotylenchus, Heterodera and Merlinius represented the 52 % of total nematodes abundance at 40 cm depth.

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Section: Resultssupporting

confidence: 82%

Seasonal fluctuations of the nematode communities in a hop garden soil

2010

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“…Besides being one of the most numerous multicellular animals (Bongers and Ferris 1999) actively involved in fundamental ecological processes in soil, such as decomposition and nutrient cycling (Freckman 1988), free-living nematodes are widely used as indicators of the soil condition (Bongers and Bongers 1998). According to Yeates (2003), Papatheodorou et al (2004), Lazarova et al (2004), Shukurov et al (2005), and Steinberger et al (1989), the structure of the soil nematode community is very sensitive to substrate texture, climate, biogeography, and changes in soil properties. Furthermore, the dispersion and density of the soil free-living nematode community have been found to be closely dependent on plant distribution (Duponnois et al 1999).…”

Section: Introductionmentioning

confidence: 99%

The effect ofCercidium praecoxandProsopis laevigataon vertical distribution of soil free‐living nematode communities in the Tehuacán Desert, Mexico

Pen-Mouratov¹,

Rodrı́guez-Zaragoza²,

Steinberger³

2008

Ecological Research

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Vegetation cover is known to act as an abiotic mediator influencing the structure of soil fauna communities in arid and semi-arid ecosystems. The aim of the current research was to determine the spatial dispersion of the soil free-living nematode community under the canopy of Cercidium praecox and Prosopis laevigata during the rainy season. These shrubs are the dominant plant associations in the western part of the Tehuaca´n-Cuicatla´n Valley in Mexico. Soil samples were taken from each 10-cm depth between 0 and 50 cm in August 2004. Our results demonstrated that the abundance and structure of the soil free-living nematode communities in the study area were strongly dependent on plant effects, specified by limited factors such as soil moisture and organic matter availability. The greatest degree of abundance of soil-free-living nematodes (88%) was found in the upper (0-10 cm) soil layer. Plant parasites were the most abundant trophic group under the two plants (58 and 36% under Parkinsonia (Cercidium) praecox and Prosopis laevigata, respectively), whereas omnivore-predators were the most dominant (96%) in inter-plant spaces. The fungivore/bacterivore (F/B) ratio was found to be the most useful tool of the ecological indices tested in the present study, reflecting the vertical distribution of the freeliving nematode communities beneath different plant species in the different soil layers. The soil free-living nematode communities and their vertical distribution were found to be affected by plant ecophysiological adaptation, soil moisture, and the interaction between them.

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“…Knowledge of spatial patterns of nematodes contributes to better understanding of below-ground fauna community structure and functioning (Lazarova et al, 2004). It has been shown that nematode communities exhibit a typical vertical distribution, which often relates to a variety of biological, physical and chemical variables of soils (Ou et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

“…It has been shown that nematode communities exhibit a typical vertical distribution, which often relates to a variety of biological, physical and chemical variables of soils (Ou et al, 2005). Gradual reductions of nematode abundance and diversity, and changes in the distribution of trophic group composition have been observed with increasing soil depth (Lazarova et al, 2004). Vegetable plantation in greenhouse soil is a major way of vegetable production during winter in North China.…”

Section: Introductionmentioning

confidence: 99%

Nematode communities in greenhouse soil of different ages from Shenyang suburb

Liu¹,

Hua²,

Jiang³

et al. 2006

Helminthologia

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51 SummaryThe distribution of nematode communities with depth in greenhouse soil of different ages from Shenyang suburb was investigated in October 2004. Thirteen families and 23 genera were observed in our study. Heterocephalobus was dominant genus in all treatments. The numbers of total nematodes and trophic groups declined with soil depth but increased with greenhouse age. Bacterivores were the most abundant trophic group in all treatments, followed by plant parasites and omnivores-predators, while fungivores were the least, only accounted for less than 4 % of the total abundance. Maturity index (MI) and plant parasite index (PPI) were effective in distinguishing differences in nematode community structure in different ages of greenhouses. The numbers of total nematodes were positively correlated with soil organic carbon, total nitrogen, nitrate, and electrolytic conductivity, but negatively with soil pH.

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Spatial patterns of variation in the composition and structure of nematode communities in relation to different microhabitats: a case study of Quercus dalechampii Ten. forest

Cited by 35 publications

References 35 publications

Seasonal fluctuations of the nematode communities in a hop garden soil

Seasonal fluctuations of the nematode communities in a hop garden soil

The effect ofCercidium praecoxandProsopis laevigataon vertical distribution of soil free‐living nematode communities in the Tehuacán Desert, Mexico

Nematode communities in greenhouse soil of different ages from Shenyang suburb

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