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Neher, Deborah A.; Weicht, Thomas R.; Savin, Mary C.; Görres, Josef H.; Amador, José A.

doi:10.1023/a:1004665120360

Cited by 41 publications

(5 citation statements)

References 33 publications

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“…Such community composition is similar to communities reported in Wright and Coleman [51] and many other nematode trophic-group studies. The present study clearly illustrates the existence of a strong seasonal effect on nematodecommunity composition and abundance, thus supporting the findings of Neher et al [49] and García-Álvarez et al [52].…”

Section: Discussionsupporting

confidence: 92%

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Changes in soil free-living nematode communities and their trophic composition along a climatic gradient

Levi¹,

Sherman²,

Pen-Mouratov³

et al. 2012

OJE

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Ambiguity exists concerning the effects of climate on soil nematode-community composition. In this study, we examined the free-living nematode communities in soil along a climatic gradient representing humid-Mediterranean, Mediterranean, semi-arid, and arid climate types. The relationships between abiotic soil characteristics (organic carbon, soil moisture (SM), water-holding capacity) and nematode parameters, such as abundance, trophic group composition, and diversity indices, were explored in the context of climate and seasonality. Nematode abundance was lowest at the arid site. At the humidMediterranean and Mediterranean locations, nematode abundance reached its peak in winter, while at the semi-arid and arid sites, an almost opposite trend was observed, with lowest abundances in winter, presumably due to a nutrient washout from the soil profile during the rainy season. On the trophic level, one trophic group demonstrated a positive correlation with SM and one trophic group demonstrated a negative one at each location, while the other two groups remained constant. Fungi-feeding nematodes were found to be unaffected by SM at the humidMediterranean and Mediterranean locations, while at the semi-arid and arid sites their proportion increased in correlation with decreasing SM. Bacteria-feeders increased with SM at the arid site, were unaffected at the semi-arid location, and decreased with SM at the humid-Mediterranean and Mediterranean sites. Plant-parasites were associated with SM only at the humidMediterranean site. Omnivores-predators were positively affected by SM at the two middle locations, staying constant at the humid-Mediterranean and arid sites. These findings point to the strong linkage existing between nematode trophic behavior and climatic factors, demonstrating distinctive communal fingerprints for each climate type.

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Section: Discussionsupporting

confidence: 92%

“…Many studies have established that fungal populations are more resistant to water stress than bacterial populations [48,49]. Such a finding can explain both the fungifeeder and bacteria-feeder behavior at the arid sites.…”

Section: Discussionmentioning

confidence: 96%

Changes in soil free-living nematode communities and their trophic composition along a climatic gradient

Levi¹,

Sherman²,

Pen-Mouratov³

et al. 2012

OJE

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“…A number of studies show that soil nematode abundance and biomass vary significantly with season and site-specific conditions, which is due mainly to variations in soil temperature, moisture, aeration, and soil carbon availability [7][8][9]. By contrast, the genus diversity is much more related to the plant species composition and the shoot to root ratio of the vegetation in question [2,[10][11][12][13], with dominant plant species in particular [14].…”

Section: Introductionmentioning

confidence: 99%

Effects of Mowing Frequency on Soil Nematode Diversity and Community Structure in a Chinese Meadow Steppe

Zhao

Chen

et al. 2021

Sustainability

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Soil nematodes are one of the most important components in terrestrial ecosystems and the critical factor driving the belowground process. The grasslands of Northeast China have been subject to mowing for ages, which theoretically should have had substantial effects on the processes associated with soil nematodes. However, relevant studies have barely been conducted to date. This study examined variations in soil nematode abundance, biomass, diversity, and community structure, with respect to varying mowing frequencies. The results showed that a higher mowing frequency significantly reduced the abundance of soil nematodes, biomass, diversity, and community structure stability in the ecosystem, while intermediate mowing frequency enhanced these parameters to different extents. Our findings indicate that the changing patterns of the nematode indices with mowing frequency conform to the intermediate disturbance theory. This study provides a theoretical basis for formulating grassland-related management measures and maintaining the stability of grassland ecosystems.

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“…Examples include distribution of microbial piercers, plant parasite browsers and external root feeders in soil, mycorrhizae, mycorrhizal soil, and roots (Hanel 1998), distribution of microbial processors and piercers in potato fields (Hofman & Jacob 1989), distribution around plants of microbial feeders (Cayrol & Dreyfuss 1975, rossner & urland 1983, Singh et al 1977, and distribution of different types of microbial feeders in different freshwater or marine sediments (Boucher 1973. Other examples of locations used as evidence for trophic relationships are cited in reviews (Neher et al 1999, Paramonov 1962, Yeates 1987c, Yeates et al 1993). There are many, many reports of parasites of plants, invertebrates and vertebrates being found on, in or otherwise associated with a supposed host.…”

mentioning

confidence: 99%

Phylum Nematoda: feeding habits for all valid genera using a new, universal scheme encompassing the entire phylum, with descriptions of morphological characteristics of the stoma, a key, and discussion of the evidence for trophic relationships

Hodda

2022

Zootaxa

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This paper details a system for classifying the trophic relationships of the entire Phylum Nematoda, together with a table specifying the categories of every valid genus. This system encompasses both the diets of nematodes and how the food is obtained. The types of evidence used to evaluate trophic relationships and the inferences that can be drawn from each are evaluated. The general morphological and ecological characteristics of each trophic type are detailed, and a morphological key is presented. This information will enable the trophic relationships of any valid genus of nematodes to be assessed, along with currently undescribed genera, provided their affinities to existing genera can be ascertained. The system and list can add value to ecological, environmental and biodiversity studies where there is no morphological information, for example in environmental sequencing or metabarcoding studies.

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Untitled

Cited by 41 publications

References 33 publications

Changes in soil free-living nematode communities and their trophic composition along a climatic gradient

Changes in soil free-living nematode communities and their trophic composition along a climatic gradient

Effects of Mowing Frequency on Soil Nematode Diversity and Community Structure in a Chinese Meadow Steppe

Phylum Nematoda: feeding habits for all valid genera using a new, universal scheme encompassing the entire phylum, with descriptions of morphological characteristics of the stoma, a key, and discussion of the evidence for trophic relationships

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