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1

The effect of macroarthropods patrolling soil surface on soil nematodes: a field experiment in a mown meadow

100%
Wasilewska L.
Polish Journal of Ecology
|
2000
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tom 48
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nr 4
2

Soil nematodes in organic and conventional farming system: a comparison of the taxonomic and functional diversity

84%
Ilieva-Makulec K., Tyburski J., Makulec G.
Polish Journal of Ecology
|
2016
|
tom 64
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nr 4
Agricultural practices in organic farming theoretically are supposed to lead to higher diversity and activity of soil organisms, which correlates with the stability or resilience of the soil system. In a 3-year study, we tested that hypothesis by comparing the nematode abundance, genera composition and community structure in the soil of winter wheat crop under organic and conventional management. We found the soil type to be a stronger predictor for the total nematodes abundance than the farming system itself. In both systems nematode densities were higher in the sandy than in the clayey soil. Total abundance of nematodes was significantly higher in the organic than conventional farm only in sandy soil and only in the autumn. Significantly more plant feeders was observed in organic than in the conventional crops regardless the soil type. In the clayey soil more bacterial feeders were found in the conventional farm, while in the sandy soil — in the organic one. Nematode generic richness was higher in the organic (a range of 15–35 genera) than in the conventional crops (a range of 15–29) on most sampling dates. Higher generic diversity (H') in the organic crop than in conventional was found for total nematodes in the clayey soil, and for hyphal feeders in sandy soil. H' for plant feeders were higher under organic than conventional system in both types of soil. In both farming systems bacterial feeding genera (Rhabditis, Panagrolaimus, Cephalobus and Acrobeloides) dominated in the communities. Plant feeders and omnivores were found among dominant genera only in the clayey soil, first under both systems, the latter only in the organic crops. The evaluation based on the ecological indices such as Maturity Index, Plant Parasite Index, Enrichment and Structure Index, and ratios between nematode trophic groups, showed that nematode communities under both farming systems most of the time were low matured and the soil food webs strongly disturbed.
3
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Nematodes in the soil and roots of spring barley grown in crop rotation and long-term monoculture

84%
Skwiercz A. T., Adamiak E., Stefanovska T., Szelagowska P., Zaton K., Sobolewska M.
Acta Scientiarum Polonorum. Agricultura
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2018
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tom 17
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nr 3
4

Response of soil nematodes to climate-induced melting of Antarctic glaciers

84%
Ilieva-Makulec K., Gryziak G.
Polish Journal of Ecology
|
2009
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tom 57
|
nr 4
811-816
Nematode colonization and establishment of nematode communities on icefree areas created by the recession of Antarctic glaciers were studied on the Antarctic Specially Protected Area (ASPA) No. 128 (Western coast of Admiralty Bay, King George Island, South Shetlands Islands). Soil samples were taken along three transects marked between sea shore and Ecology Glacier, Baranowski Glacier and Windy Glacier and assigned to four age-class intervals: 0-7, >7– 29, >29–52 and >52 years after the retreat of the glaciers. Changes in nematode communities, in terms of abundance, diversity and trophic structure were related to the duration of the ice-free period. The abundance of nematodes increased with the age of ice-free areas. The highest numbers of nematodes were found on the sites free of ice for more than 52 years. Taxonomic and trophic diversity of nematodes on these sites was also significantly higher in comparison to the rest sites. Nematode communities on the sites from the first three age-class intervals were poor in genera (up to 6 genera) while on the oldest sites in total 16 genera of nematodes were found. A trend of increasing the number of nematode trophic groups along the age classes was also apparent – from community of nematodes belonging to only two trophic groups (bacterial and fungal feeders) on younger ice-free sites to more complex community of nematodes (belonging to five trophic groups), at the oldest sites.
5

Nematofauna of the shelterbelts in the agricultural landscape

84%
Wasilewska L.
Polish Journal of Ecology
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2004
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tom 52
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nr 2
Trophic structure, number and density of taxa, generic diversity, and maturity indices were compared for soil nematode communities inhabiting a 170-year-old shelterbelt, 6-year-old shelterbelt, and a maize field adjacent to the younger shelterbelt. The study was conducted in an area of long-term research near Turew (Wielkopolska Region, West Poland). Sampling sites in the crop field were located at distances of 0.5 m, 10 m and 50 m from the younger shelterbelt. In the soil of shelterbelts more taxa occurred in comparison with the cropland, the index of generic diversity was higher, the dominance of nematodes of the class Secernentea (r-strategists s.l.) over Adenophorea (K-strategists s.l.) was lower, community maturity indices and bacterivore maturity index were higher, and the ratio of plant parasite index to maturity index was lower, providing evidence for a more advanced stage of succession in the shelterbelts. In the maize field, fungivorous and plant feeding nematodes predominated, with a strong dominance of one of the taxa pathogenic to plants (Pratylenchus). The effect of 6-year old shelterbelt on nematode community in maize crop field was observed in the field part closest to the shelterbelt.
6

Effect of temperature on the soil nematode Cephalobus persegnis in a laboratory culture

84%
Makarevskaia Z. S.
Polish Journal of Ecology
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1998
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tom 46
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nr 2
7

Combined effects of earthworms and diurnal temperature fluctuations on successional changes of litter nematode community

67%
Uvarov A. V., Kolosova N., Kulinich O.
Polish Journal of Ecology
|
2009
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tom 57
|
nr 4
685-696
Earthworm functioning and temperature regime are among the most important biotic and abiotic factors of soil environment; their combined action on soil nematode activities has not been studied. In a 4-month laboratory experiment, effects of the epigeic earthworm Dendrobaena octaedra on a succession of nematode community in litter of a mid-European birch/oak forest were tested in the gradient of an increase of diurnal temperature fluctuations from 0℃ (constant 15℃; T₁₅) to 10℃ (daily range between 10° and 20℃; T₁₀₋₂₀) and 20℃ (daily range between 5° and 25℃; T₅₋₂₅). Earthworm and temperature effects were measured as differences in nematode community respiration rates between the experimental treatments. Nematode respiration rates were calculated on the basis of body size/weight/O₂ consumption relationships for individual species. Nematode community was dominated by bacterial feeders and changed in a characteristic successional pattern which, however, was markedly modified by temperature regime and earthworm activities. Dominant nematode taxa revealed specific patterns of temporal dynamics in connection with their responses to temperature and earthworm presence. Thus, metabolic activity of Plectus acuminatus was strongly reduced by D. octaedra but did not react to variation of temperature regime. In contrast, activity of Panagrolaimus sp. significantly responded to temperature but not to earthworm presence, whereas Pl. thornei reacted to both factors separately and in combination. Ceratoplectus armatus was stronger affected by earthworm presence then by temperature; Tylocephalus auriculatus showed the opposite pattern. The variety of responses may explain the coexistence of several taxonomically related (Plectidae) and trophically similar species within the dominant group. Both earthworm presence and increase of the range of diurnal temperature fluctuations strongly affected the net of interspecific correlations within the nematode community. Earthworms strongly reduced total activities of nematode community at any temperature regime. T₁₅ regime showed markedly lower level of cumulative nematode respiration than both fluctuating regimes, irrespective of earthworm presence. In conclusion, combined effects of earthworms and temperature regime drastically changed patterns of relationships within the nematode litter community. The results of the experiments may have implications for the perspectives of global warming events at the study site: it is suggested that the ultimate vector of the changes in litter environment might be directed towards the conditions of the treatment [T₁₅ regime; earthworms present], with the corresponding trends in the development of the litter nematode community.
8

Changes in soil nematode community structure following warming and drought manipulations in a grassland mesocosm experiment

67%
Ilieva-Makulec K., Boeck H.J. H. J.
Polish Journal of Ecology
|
2013
|
tom 61
|
nr 1
The response of soil nematodes to simulated in spring, summer and autumn periods of warming and drought were studied in a grassland mesocosm experiment. The abundance, diversity and some community parameters of nematodes were analysed at different times after the end of the extreme events – 170 days after the spring treatment, 90 days after the summer treatment and 22 days after the autumn treatment. Among studied parameters the abundance of nematode trophic groups, taxonomic richness and diversity were found to be sensitive to changes in the soil system caused by extremes. Our results showed that warming and drought did not cause predictable shifts in nematode communities. Moreover the extremes’ after-effect was not unidirectional with time. The periods of warming and drought induced a positive or negative long lasting influence on nematodes, and the outcome seems to depend on season, the nematode trophic group or even the nematode taxon.
9

Post-drainage secondary succession of soil nematodes on fen peat meadows in Biebrza Wetlands, Poland

67%
Wasilewska L.
Polish Journal of Ecology
|
2002
|
tom 50
|
nr 3
10

Nematodes colonizing power plant ash dumps. I. Soil nematodes in ash dumps non-reclaimed and reclaimed by adding mineral soil and sowing grass

67%
Dmowska E.
Polish Journal of Ecology
|
2001
|
tom 49
|
nr 3
11

Wstępne badania wpływu liczebności populacji Heterodera schachtii na oddziaływanie Penicillium frequentans

59%
Kaup G.
Progress in Plant Protection
|
2010
|
tom 50
|
nr 4
Pot experiments were carried out in 2008 and 2009. Into the soil were introduced microorganisms: Heterodera schachtii (10 or 5 cysts in 100 g of soil) and Penicillium frequentans. The following parameters were taken into account in interpretation of the experiment: concentration of H. schachtii cysts in 100 g of soil, concentration of eggs and larvae in 1g of soil and fertility of females. The research was carried out in accordance with the rules adopted in nematology.
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