Soil nematode community response to fertilisation in the root-associated and bulk soils of a rice-wheat agroecosystem

The practice of growing agricultural crops in rows results in larger soil nematode populations in the root-associated soil than in the bulk soil between the rows. Fertilisers applied to improve grain yield generally increase the abundance of nematode communities in agricultural soils. The objective of this study was to compare total nematode density and four dominant genera in the root-associated and bulk soils of paddy rice and upland wheat receiving organic and mineral fertilisers. Dominant nematode genera accounted for 80% of all nematodes and represented four trophic groups. There was greater total nematode density and a higher enrichment index (EI) but less nematode diversity (H′) and a lower structure index (SI) in the root-associated soil than bulk soil of upland wheat. By contrast, nematode abundance, diversity and ecological indices were similar in the root-associated and bulk soils of the paddy rice. Soil nematode communities were affected significantly and consistently by fertilisation in upland wheat and paddy rice phases. More herbivoreHirschmanniellawere present with mineral fertiliser than in the non-fertilised control. Straw-based organic fertilisers increased the abundance of bacterivoreEucephalobus. The lack of interaction between rhizosphere effect and fertilisation indicated that crop-growing conditions (different species and water regimes) were more influential on nematode communities and not consistently impacted by short-term organic and mineral fertilisation in the rice-wheat agroecosystem.

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Responses of soil nematode communities to agroecological crop management systems

Nematology ◽

10.1163/138855411x587103 ◽

2012 ◽

Vol 14 (2) ◽

pp. 209-221 ◽

Cited By ~ 4

Author(s):

Débora Cristina Santiago ◽

Giovani de Oliveira Arieira ◽

Edinei de Almeida ◽

Maria de Fátima Guimarães

Keyword(s):

Trophic Structure ◽

Biological Indicators ◽

Management Systems ◽

Soil Nematode ◽

Canavalia Ensiformis ◽

Nematode Communities ◽

Plant Feeding ◽

Nematode Diversity ◽

Crop Management Systems ◽

The Impact

Soil nematodes are sensitive to human intervention and widely used as biological indicators of disruptions and alterations in soil quality. The aim of this work was to identify nematodes that are good biological indicators in maize crops under different management systems, and to establish the impact levels of these systems. Soil samples were collected over a 3-year period at a depth of 0.0-0.3 m in areas under six different management systems for maize (Zea mays) monoculture, and intercropped maize and Canavalia ensiformis. Six areas of native vegetation were also assessed to provide a reference for ecological balance. After identification and counting, nematode communities were characterised according to abundance (total and relative), diversity (identified genera and diversity indexes), trophic structure and ecological maturity (disturbance indexes). Nematodes proved to be good ecological indicators, responding to the systems employed. Intercropping maize and Canavalia ensiformis in at least one assessment year reduced disruption and increased nematode diversity, which were both verified based on specific indexes. It was also observed that the maize monoculture increased disruption leading to a drop in nematode fauna diversity and an increase in the incidence of plant-feeding nematodes.

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Soil Microbial and Nematode Community Response to the Field Application of Recycled Bio-Based Fertilisers in Irish Grassland

Sustainability ◽

10.3390/su132212342 ◽

2021 ◽

Vol 13 (22) ◽

pp. 12342

Author(s):

Anna Karpinska ◽

Demi Ryan ◽

Kieran Germaine ◽

David Dowling ◽

Patrick Forrestal ◽

...

Keyword(s):

Soil Health ◽

Nutrient Status ◽

Community Response ◽

Field Application ◽

Nematode Community ◽

Nematode Communities ◽

Soil Microbial ◽

Nematode Diversity ◽

Healthy Functioning ◽

Next Generation Sequencing Ngs

Phosphorus (P) is an essential plant nutrient routinely applied to soils as an agricultural fertiliser, frequently in non-renewable, inorganic forms. Finite reserves and growing demand for agricultural phosphorus mean alternative P resources need to be explored. Recycling-derived fertilisers (RDF) recovered from specific waste streams, using nutrient recovery technologies, have the potential to replace conventional phosphorus fertilisers used in agriculture. Healthy functioning soil microbial and nematode communities are essential players in maintaining soil health and nutrient status. Thus, it is important to assess the responses of these communities to RDF application. We compared soil microbial and nematode communities of conventional fertiliser and RDF treated soil, in the form of struvite and ash, using next-generation sequencing (NGS) technologies in a phosphate-fertiliser replacement value (P-FRV) field trial. Bacterial and nematode communities displayed significant changes under the different P fertilisation treatments, while fungal communities were relatively unaffected. Bacterial diversity was higher among RDF treatments than conventional treatments, while nematode diversity was reduced by one ash treatment. Available potassium and phosphate were the main drivers of bacterial community changes when analysed by canonical correspondence analysis (CCA), while available phosphate alone was the driver of nematode community shifts. Of the RDF, struvite products yielded the highest crop biomass, maintained microbial diversity and were associated with the least disturbed nematode communities.

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Effect of heavy metals on soil nematode communities in the vicinity of a metallurgical plant in North Slovakia

Helminthologia ◽

10.1515/helmin-2015-0040 ◽

2015 ◽

Vol 52 (3) ◽

pp. 252-260 ◽

Cited By ~ 2

Author(s):

P. Šalamún ◽

V. Hanzelová ◽

D. Miklisová ◽

T. Brázová

Keyword(s):

Stress Responses ◽

Industrial Pollution ◽

Pollution Source ◽

Soil Nematode ◽

Free Living ◽

Nematode Communities ◽

Generic Composition ◽

Free Living Nematode ◽

Nematode Diversity ◽

Remote Sites

Abstract The effect of industrial pollution from chromium ferroalloys production on soil free-living nematode assemblages, c-p groups and generic composition was investigated along 7-km transect. From trace elements (Cr, Cu, Ni and Pb), only chromium exceeded the thresholds for uncontaminated soils (10 mg.kg-1) near the pollution source. In contrast mobilizable fraction of Cr has increased with the distance from the pollution source and was found to be positively correlated with Cox, soil pH, and moisture. Generic richness (nematode diversity) was also higher at remote sites. The low contamination has no significant impact on the nematode communities as illustrated by the c-p groups composition and balanced community structure. Widely applied ecological indices SI and EI also proved maturing ecosystem without any significant stress responses

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Nicienie glebowe na polu i odłogu – zagęszczenie i różnorodność

Studia Ecologiae et Bioethicae ◽

10.21697/seb.2011.9.2.03 ◽

2011 ◽

Vol 9 (2) ◽

pp. 45-66

Author(s):

Krassimira Ilieva-Makulec ◽

Renata Franczak ◽

Grzegorz Makulec

Keyword(s):

Trophic Structure ◽

Diversity Index ◽

Taxonomic Composition ◽

Arable Soil ◽

Nematode Community ◽

Soil Nematode ◽

Nematode Density ◽

Nematode Communities ◽

Arable Field ◽

Dominance Structure

The results presented here concern the study, which was carried out in spring 2009 on an arable field and a fallow. The following parameters were analyzed: density, taxonomic composition, trophic and dominance structure of soil nematode communities. Shannon-Weaver diversity index, Sørensen’s index of similarity, and Maturity index were also calculated. The results show that the nematode community in the soil of arable field differed from that on the fallow in respect of density and trophic structure. Nematode density was higher in the arable soil than in the fallow. The group of bacterial-feeding nematodes was the most numerous among five trophic groups recorded in the study. The higher density of that group in the arable soil than in the fallow indicates the positive response of bacterial-feeding nematodes to the higher nutrient supply after the manure applying. The results show that in three years of fallow nematode communities became more mature and diverse than in the arable soil. The study confirms the indicative value of some nematode community parameters and indices for the assessment of the varying human intervention and the functional state of the soil.

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Soil nematodes in the field and fallow - density and diversity

Studia Ecologiae et Bioethicae ◽

10.21697/seb.2020.18.5.27 ◽

2020 ◽

Vol 18 (5) ◽

pp. 303-315

Author(s):

Krassimira Ilieva-Makulec ◽

Renata Franczak ◽

Grzegorz Makulec

Keyword(s):

Trophic Structure ◽

Diversity Index ◽

Taxonomic Composition ◽

Arable Soil ◽

Nematode Community ◽

Soil Nematode ◽

Nematode Density ◽

Nematode Communities ◽

Arable Field ◽

Dominance Structure

The results presented here concern the study, which was carried out in the spring of 2009 on an arable field and a fallow. Following parameters were analysed: density, taxonomic composition, trophic and dominance structure of soil nematode communities. Shannon-Weaver diversity index, Sørensen’s index of similarity and Maturity index were also calculated. The results show that the nematode community in the soil of arable field differed from that on the fallow in respect of density and trophic structure. Nematode density was higher in the arable soil than in the fallow. The group of bacterial-feeding nematodes was the most numerous among five trophic groups recorded in the study. The higher density of that group in the arable soil than in the fallow indicates the positive response of bacterial-feeding nematodes to the higher nutrient supply after the manure applying. The results show that in three years of fallow nematode communities became more mature and diverse than in the arable soil. The study confirms the indicative value of some nematode community parameters and indices for the assessment of the varying human intervention on the functional state of the soil.

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Nematode diversity, abundance and community structure 50 years after the formation of the volcanic island of Surtsey

Biogeosciences Discussions ◽

10.5194/bgd-11-14239-2014 ◽

2014 ◽

Vol 11 (10) ◽

pp. 14239-14267

Author(s):

K. Ilieva-Makulec ◽

B. Bjarnadottir ◽

B. D. Sigurdsson

Keyword(s):

Community Structure ◽

Soil Depth ◽

Plant Cover ◽

Soil Nematode ◽

Volcanic Island ◽

Nutrient Inputs ◽

Soil C ◽

Nematode Communities ◽

Nematode Diversity ◽

Nematode Abundance

Abstract. The soil nematode fauna can give important insights into soil development and other habitat changes that occur during primary succession. We investigated the generic composition, density, distribution and community structure of nematodes 50 years after the formation of a pristine volcanic island, Surtsey, Iceland. Part of the island has received additional nutrient inputs from seagulls breeding there since 1985, while the reminder has been much less affected and is at present found at a different successional sere. In total, 25 genera of nematodes were identified, of which 14 were reported on Surtsey for the first time. Nematode communities were more diverse in the more infertile area outside the gull colony, where 24 genera were found, compared to 18 inside. The trophic structure of the nematode communities showed relatively higher abundance of fungal feeders in the infertile areas, but relatively more bacterial- and plant-feeders inside the colony. Nematode abundance in surface soil was, however, significantly higher within the gull colony, with 16.7 ind. cm−2 compared to 3.6 ind. cm−2 outside. A multivariate analysis indicated that the nematode abundance and distribution on Surtsey were most strongly related to the soil C : N ratio, soil acidity, plant cover and biomass, soil temperature and soil depth.

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How does an invasive Heracleum sosnowskyi affect soil nematode communities in natural conditions?

Nematology ◽

10.1163/15685411-00003196 ◽

2019 ◽

Vol 21 (1) ◽

pp. 71-89 ◽

Cited By ~ 2

Author(s):

Marek Renčo ◽

Franciszek Wojciech Kornobis ◽

Krzysztof Domaradzki ◽

Anna Jakubska-Busse ◽

Jana Jurová ◽

...

Keyword(s):

Species Composition ◽

Plant Species ◽

Soil Nematode ◽

Plant Species Composition ◽

Natural Conditions ◽

Nematode Communities ◽

Perennial Plant ◽

Heracleum Sosnowskyi ◽

Nematode Diversity ◽

Soil Nematode Communities

Summary We analysed the effect of the invasive perennial plant Heracleum sosnowskyi on soil nematode communities and diversity, and plant species composition, by comparing invaded and non-invaded (control) areas in natural conditions. Invasion of H. sosnowskyi caused significant shifts in plant species composition, which subsequently modified nematode assemblages. Stress-sensitive omnivores, fungivores and root-biomass-dependent obligate plant parasites best reflected changes in soil nematode communities under the influence of H. sosnowskyi invasion. The negative effect of H. sosnowskyi was most evident on Aphelenchus, Tylencholaimus, Geocenamus, Helicotylenchus, Pratylenchus, Tylenchorhynchus and Aporcelaimellus. Our results indicate that significant changes in the herbaceous layer after H. sosnowskyi invasion in ecosystems where H. sosnowskyi eventually became dominant impacted soil nematode communities but did not affect nematode diversity. This was in contrast to the habitats where a solitary plant of H. sosnowskyi grew and no significant changes in nematode communities were observed.

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Studies on the Soil Nematode Diversity in Relation to the Soil Parameters from Sugarcane Fields of Aurangabad District Maharashtra State, India

International Journal for Research in Applied Science and Engineering Technology ◽

10.22214/ijraset.2017.9238 ◽

2017 ◽

Vol V (IX) ◽

pp. 1632-1640

Author(s):

Rajendra B. Gade

Keyword(s):

Soil Parameters ◽

Soil Nematode ◽

Nematode Diversity

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Altitudinal gradient affect abundance, diversity and metabolic footprint of soil nematodes in Banihal-Pass of Pir-Panjal mountain range

Scientific Reports ◽

10.1038/s41598-021-95651-x ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Shahid Afzal ◽

Humira Nesar ◽

Zarrin Imran ◽

Wasim Ahmad

Keyword(s):

Elevation Gradient ◽

Carbon Assimilation ◽

Shannon Index ◽

Nematode Community ◽

Mountain Range ◽

Soil Nematode ◽

Nematode Communities ◽

Nematode Abundance ◽

Belowground Carbon ◽

Abundance And Diversity

AbstractDespite enormous diversity, abundance and their role in ecosystem processes, little is known about how community structures of soil-inhabiting nematodes differ across elevation gradient. For this, soil nematode communities were investigated along an elevation gradient of 1000–2500 masl across a temperate vegetation in Banihal-Pass of Pir-Panjal mountain range. We aimed to determine how the elevation gradient affect the nematode community structure, diversity and contribution to belowground carbon assimilation in the form of metabolic footprint. Our results showed that total nematode abundance and the abundance of different trophic groups (fungivores, herbivores and omnivores) declined with the increase of elevation. Shannon index, generic richness and evenness index indicated that nematode communities were more diverse at lower elevations and declined significantly with increase in elevation. Nematode community showed a pattern of decline in overall metabolic footprint with the increase of elevation. Nematode abundance and diversity proved to be more sensitive to elevation induced changes as more abundant and diverse nematode assemblage are supported at lower elevations. Overall it appears nematode abundance, diversity and contribution to belowground carbon cycling is stronger at lower elevations and gradually keep declining towards higher elevations under temperate vegetation cover in Banihal-pass of Pir-Panjal mountain range.

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