Full-text resources of CEJSH and other databases are now available in the new Library of Science.
Visit https://bibliotekanauki.pl

Results found: 4

first rewind previous Page / 1 next fast forward last

Search results

Search:
in the keywords:  earthworms
help Sort By:

help Limit search:
first rewind previous Page / 1 next fast forward last
1
Publication available in full text mode
Content available

Peculiarities of biotic interactions in the soil system

100%
Striganova B.
Studia Ecologiae et Bioethicae
|
2014
|
vol. 12
|
issue 4
61-81
EN
The heterogeneity of soil environment is an important factor of the taxonomic and ecological diversity of the soil animal population. The con¬tribution of invertebrates to the formation of aerial space in mineral soil horizons, in the form of a stable system of biopores, is considered on the basis of the author’s original materials and literature data. Aerial space is the necessary condition for the life of aerobiotic forms in the mineral soil, which comprise the bulk of soil invertebrates belonging to meso- and macrofauna. Zoogenic mechanisms of the formation of soil pores and soil aggregates are analyzed. Pore walls and aggregate surfaces are populated by different groups of pedobionts. The partial isolation of these loci decreases predation, that creates conditions for the maintenance of a high diversity and abundance of animal populations in the restricted volume of populated soil profile.
2
Publication available in full text mode
Content available

Wpływ dżdżownic na zespoły skoczogonek (Collembola) w uprawach trawiastych jedno i wielogatunkowych

100%
Olejniczak I., Makulec G.
Studia Ecologiae et Bioethicae
|
2014
|
vol. 12
|
issue 3
83-97
EN
In 2004-2005 a lysimetric experiment was designed to determine whether and how plant diversity and earthworms could influence diversity and densities of collembolan communities. We compared two grass cultures: monoculture of Festuca rubra L. and a polyculture, the mixture of grasses (8 species) commonly used in agriculture. In addition to two plant communities of different diversity, we used in our experiments an engineering species of earthworm – Aporrectodea caliginosa (Sav.). The experiment was initiated in May 2004, when the lysimeters were sown with F. rubra or with a mixture of grasses. The following year, in May 2005, we introduced 6 individuals (that correspond with average densities of 200 ind.m-2 in natural environment ) of A. caliginosa to half of the lysimeters. In experiments we used plastic lysimeters, 450 cm2 in area and 20 cm high, filled with alluvial coarse sandy soil. The same soil was used in environment of the lysimeters. Soil samples were taken at the depths of 0-5cm, 5-10cm, 10-15cm and 15-20cm, before introducing earthworms and after 60, 120 and 180 days from introducing earthworms. On each occasion, samples were taken from six or ten lysimeters in each variant of the experiment. Soil samples were taken from central parts of lysimeter to avoid the edge effect. Springtails were extracted in the Tullgren’s apparatus and then were determined basing on Stach’s (1955) and Fjellberg’s (1998, 2007) keys and taxonomic paper of Rusek (1982). For statistical analysis we used nonparametric tests. Species diversity of Collembola communities was calculated according to Shannon-Wiener equation using logarithms at a base of 2 (Shannon and Wiener 1963). Hutcheson’s test was used to determine the statistical significance of differences between the H indices (Hutcheson 1970). Three ecological groups were distinguished among collembolans basing on their preference to soil layer: epigeic, hemiedaphic and euedaphic (Christiansen 1964). We found that soil layer (Kruskal-Wallis test: N = 432, H=18,25, P=0,0004), biodiversity of grass culture (N=432, H=14,59, P=0,0001) and the period of the season (N=432, H=24,24, P=,00000) had an important effect on densities of collembolan communities independently of earthworms presence (N=432, H=1,99, P=0,16). We found 18 species of springtails and the number of species decreased with soil layer. The most abundant were Cryptopygus bipunctatus and Isotomodes productus.
3
Publication available in full text mode
Content available

The impact of earthworms on collembolan (Collembola) communities in grass mono- and polycultures

80%
Olejniczak I., Makulec G.
Studia Ecologiae et Bioethicae
|
2020
|
vol. 18
|
issue 5
283-291
PL
W latach 2004-2005 przeprowadzono eksperyment wazonowy, w którym badano wpływ zróznicowania roslinnosci oraz obecności dżdżownic glebowych na zespoły skoczogonek. Porównano dwa typy upraw trawiastych: monokultura kostrzewy czerwonej Festuca rubra L. oraz trawiasta uprawa wielogatunkowa (mieszanka 8 gatunków traw). Ponadto w każdej z upraw zbadano wpływ obecności dżdżownic należących do gatunku Aporrectodea caliginosa (Sav.). W maju 2004 roku doświadczalne wazony obsiano po połowie kostrzewą czerwoną oraz mieszanką traw. W lipcu 2005 roku do połowy wazonów z każdej uprawy wprowadzono dzdzownice, po 6 osobników, co odpowiada średniemu zagęszczeniu 200 osobników na metr kwadratowy w środowisku naturalnym. Próby glebowe pobrano na głębokości: 0-5 cm, 5-10 cm, 10-15 cm i 15-20 cm, przed wprowadzeniem dżdżownic oraz po 60, 120 and 180 dniach od wprowadzenia dżdżownic. Wykazano, że warstwa gleby (test Kruskala-Wallisa: N=432, H=18.25, P=0.0004), róznorodność traw (N=432, H=14.59, P=0.0001) oraz sezon (N=432, H=24.24, P=0.0000) miały istotny wpływ na zagęszczenie zespołów skoczogonek niezależnie od obecności dżdżownic (N=432, H=1.99, P=0.16). Ogółem stwierdzono 18 gatunków skoczogonek, a ich liczebności w wierzchniej warstwie gleby były istotnie wyższe niż w wastwach głębszych. Najliczniej występowały gatunki Proisotomodes bipunctatus i Isotomodes productus.
EN
In 2004-2005, a lysimetric experiment was designed to determine whether and how plant diversity and earthworms could influence diversity and densities of collembolan communities. We compared two types of crops: monoculture of Festuca rubra L. and a polyculture, the mixture of grasses (8 species) commonly used in agriculture. In addition to two plant communities of different diversity, we used in our experiments an engineering species of earthworm – Aporrectodea caliginosa (Sav.). The experiment was initiated in May 2004, when the lysimeters were sown with F. rubra or with a mixture of grasses. The following year, in May 2005, we introduced 6 individuals (that correspond with average densities of 200 ind. m-2 in the natural environment) of A. caliginosa to half of the lysimeters. Soil samples were taken at the depths of 0-5 cm, 5-10 cm, 10-15 cm and 15-20 cm, before introducing earthworms and after 60, 120 and 180 days from introducing earthworms. We found that soil layer (Kruskal-Wallis test: N=432, H=18.25, P=0.0004), biodiversity of grass culture (N=432, H=14.59, P=0.0001) and the period of the season (N=432, H=24.24, P=0.0000) had an important effect on densities of collembolan communities independently of earthworms presence (N=432, H=1.99, P=0.16). We found 18 species of springtails and the number of species decreased with soil layer. The most abundant were Proisotomodes bipunctatus and Isotomodes productus.
4
Publication available in full text mode
Content available

Plants with known antagonistic properties against pests: how they influence non-target free-living soil fauna?

70%
Ilieva-Makulec K., Bielecki M., Makulec G.
Studia Ecologiae et Bioethicae
|
2017
|
vol. 15
|
issue 4
41-53
PL
Praca dotyczy badań nad wpływem trzech gatunków roślin na wybrane wolnożyjące gatunki fauny glebowej. Zbadano bezpośredni wpływ wyciągu wodnego z liści konopi siewnych i miazgi czosnku na przeżywalność nicieni, wazonkowców i dżdżownic oraz w przypadku nicieni na płodność, dynamikę produkcji jaj i skuteczność wylęgania się jaj. W eksperymentach mikro- i mezokosmosowych natomiast oceniano pośrednie oddziaływanie ściółki z liści konopi oraz uprawy rącznika pospolitego na liczebność nicieni. Wyniki biotestów potwierdziły antagonistyczne działanie ekstraktów wybranych roślin. Najbardziej wrażliwe na substancje czynne wyciągu z liści konopi okazały się bakteriożerne nicienie Acrobeloides nanus, mniej wrażliwe wazonkowce Enchytraeus sp., a najbardziej odporne dżdżownice Dendrobaena sp. W przypadku nicieni i wazonkowców stwierdzono zależność toksycznego działania od stężenia wyciągu oraz czasu ekspozycji. Inkubacja samic A. nanus w wyciągach o różnym stężeniu wpływała na tempo składania jaj, długość okresu reprodukcji, skuteczność wylęgania się osobników młodocianych, natomiast nie miała wpływu na ich całkowitą płodność. Obecność ściółki z konopi w glebie jak i uprawa rącznika pospolitego wpływały pozytywnie na liczebność nicieni. Nasze wyniki pokazały, że pośredni efekt badanych roślin (zarówno w postaci ściółki, jak i poprzez system korzeniowy) różnił się od bezpośredniego działania zarówno intensywnością jak i kierunkiem wywołanych zmian.
EN
The aim of the study was to investigate the effect of three plant species with known antagonistic properties against pests on selected free-living species of soil fauna. The direct effects of aqueous extracts (from hemp leaves and garlic pulp) on the survival of representatives of nematodes, potworms and earthworms were studied. In the case of nematodes, the effects of hemp extracts on the egg production, total fertility and juvenile hatching efficiency were also assessed. Moreover the indirect plant impact (in the form of hemp litter added to the soil or through the root system during planting of castor bean) on soil nematodes was studied. The results of the bioassays confirmed the antagonistic effect of the plant extracts. The most sensitive to the hemp extract toxicity were nematodes, less potworms and at least earthworms. The toxicity of the hemp extract showed a clear dependence on its concentration. The garlic extract showed less toxicity to nematodes than the hemp extract did. The incubation of nematode females in the hemp extracts of different concentrations affected the rate of egg laying, the length of reproduction period and the hatching efficiency but did not affect their overall fertility. In soil, both the hemp litter and the castor plants had a positive indirect effect on the numbers of nematodes at least during the experiment.
first rewind previous Page / 1 next fast forward last
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.