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EN
The study was conducted in the years 2008-2010 in the bare root nursery Białe Błota that produced pine, beech and linden, and belonged to Bydgoszcz Forest District. The experiments included the following variants: C – control, O – organic fertilization, M – mulching with raw humus, OM – organic fertilization and mulching with raw humus. Relatively small but significant increase in the number and diversity of Oribatida species was observed in O variant for the deciduous trees. Mulching was the soil revitalization method that clearly improved the density and biodiversity of Oribatida species. In total, the investigated area harbored 37 species of oribatid mites. The most effective bioindicator and stimulant of soil revitalization was a common fungivorous species Tectocepheus velatus.
PL
Badania były prowadzone w latach 2008-2010 w należącej do Nadleśnictwa Bydgoszcz, szkółce leśnej Białe Błota produkującej sosnę, buk oraz lipę. Badania prowadzone były w następujących wariantach: C – kontrola, O – nawożenie organiczne, M – mulczowanie świeżym humusem, OM – nawożenie organiczne i mulczowanie świeżym humusem. Stosunkowo mały, ale znaczący wzrost liczby i zróżnicowania gatunkowego mechowców zaobserwowano w wariancie O dla drzew liściastych. Mulczowanie było metodą rewitalizacji gleb, która wyraźnie wpłynęła na intensywność i zróżnicowanie gatunkowe mechowców. Na badanej powierzchni stwierdzono ogółem 37 gatunków mechowców. Najskuteczniejszym bioindykatorem i stymulatorem rewitalizacji gleby był powszechnie występujący gatunek grzybożerny Tectocepheus velatus.
EN
The study was conducted in the years 2006-2007 in Białe Błota nursery belonging to Bydgoszcz Forest Inspectorate (53°06'12.3"N; 17°55'41.5"E), Poland. The aim of the study was to determine the effects of mulching with forest litter and organic fertilization (compost prepared from sanitized sewage sludge supplemented with bark or sawdust) on the presence of oribatid mites in the nurseries producing European larch (Larix decidua L.) and Scots pine (Pinus sylvestris L.). The oribatid mites were treated as bioindicators of the effectiveness of soil revitalization treatments in in-ground nursery. The study showed a strong positive effect of mulching larch and pine nurseries with forest litter on the abundance and species diversity of oribatid mites. Dynamics of changes in Oribatida presence in this two-year study revealed positive effects of mulching on soil revitalization, particularly in pine nursery and when combined with fertilization with bark-enriched compost. High abundance and growing population of such fungivores as Oppiella nova and Tectocepheus velatus may indicate positive changes in fungal communities. The study suggests that these species may be good bioindicators of soil biological activity in in-ground forest nurseries.
PL
Badania terenowe prowadzono w latach 2006-2007 w należącej do Nadleśnictwa Bydgoszcz gruntowej szkółce leśnej Białe Błota. Ich celem było określenie wpływu ściółkowania ektopróchnicą leśną i nawożenia kompostem przygotowanym na bazie higienizowanych osadów ściekowych z dodatkiem kory lub trocin na występowanie mechowców w uprawach szkółkarskich modrzewia europejskiego i sosny zwyczajnej. Mechowce traktowano jako bioindykatory zabiegów rewitalizacji gleb szkółki. Z przeprowadzonych badań wynika, iż ściółkowanie upraw modrzewia i sosny miało wyraźny dodatni wpływ na liczebność i różnorodność gatunkową mechowców. Przebieg dynamiki występowania tych roztoczy w 2-letnim cyklu badań świadczy o pozytywnym wpływie ściółkowania na rewitalizację gleb, szczególnie w uprawie sosny i w połączeniu z nawożeniem kompostem z dodatkiem kory. Liczne występowanie i rosnąca liczebność populacji mykofagów – Oppiella nova i Tectocepheus velatus – może świadczyć o pozytywnych zmianach w obrębie zbiorowisk grzybów. Wymienione gatunki mogą być dobrymi bioindykatorami aktywności biologicznej gleb w gruntowych szkółkach leśnych.
EN
The number and groups of mites (Acari) and species composition of oribatid mites (Oribatida) were analysed in three different substrates used for the restoration of degraded soils: (1) pine forest litter, (2) apple orchard litter, and (3) pine chips. The study was conducted in the years 2011-2012, on microplots of the area of 1m2 , established in a belt of trees of a nursery in Białe Błota (Bydgoszcz Forest District). Average biannual mite density per 50 cm3 of the investigated substrates ranged from 14.6 to 54.43 individuals. The highest numbers of mites were found in shredded forest litter and the lowest in pine chips. The most abundant mites in the studied material were oribatid mites, accounting for 57.3 % of these arthropods. The highest number of oribatid mites was found in the forest litter (28), and the lowest (20) in pine chips. The number of species in both types of litter was similar in the first and second year of the study, but it rose three times in the pine chips substrate over the study period. Oribatid species in the litter substrates were dominated by the eurytopic Tectocepheus velatus, and the most abundant species in the pine chips substrate was Oribatula tibialis. The experiment indicated a possibility of practical use of the shredded litter in the reintroduction of soil mesofauna and soil regeneration. This may facilitate the soil inoculation process, e.g., by using seeders specially adapted for this purpose. Additionally, a quick colonization of wood chips by acarofauna may suggest the possibility of using them as an excellent substrate for soil regeneration.
EN
The study was conducted within the Bydgoszcz limits and in the vicinity of city Bydgoszcz at seven different habitats of Hierochloë repens presence: city district Fordon - (1), (2), (3) and (4); city district Kapuściska - (5), and Białe Błota near Bydgoszcz - (6) and (7). Samples for acarological analyses were collected from the plots covered with Hierochloë repens in spring (27 May) and autumn (28 October) 2014. The density of oribatid mites on the sites with Hierochloë repens was highly variable. High density of these microarthropods was characteristic of plots (2) with Convolvulo-Brometum inermis, (5) with Arrhenatheretum elatioris and (7) covered with grassy herbaceous plants growing on fertile soils. Particularly low density of oribatid mites was observed for plot (3) with Koelerio-Corynephoretea and Festuco-Brometea communities and the lowest content of carbon and nitrogen in the soil. Depending on the site and sample collection time, four to 22 species of oribatid mites were identified. Statistical analysis (Mann-Whitney U test) of mean number of species per sample s identified two groups of plots for both sample collection terms characterized by either low (1.00-3.10) or high values (3.30-7.40) of this parameter. The first group included plots (1), (3) and (6), and the second (2), (4), (5) and (7). The following species of oribatid mites dominated on the plots covered with Hierochloë repens: Tectocepheus velatus - (1), (2) and (6); Scheloribates laevigatus - (3), Oppiella nova - (4), Eupelops occultus - (5), Liebstadia similis - (7).
EN
The study was conducted in the Pomological Orchard of the Research Institute of Horticulture in Skierniewice on a plantation of blackcurrant cultivar ‘Tiben’. The following variants of the experiment were applied: control – NPK fertilization only, mulching with a peat substrate, shredded pine bark, sawdust of coniferous trees, bovine manure, plant compost, straw of cereals, and application of mycorrhizal inoculant MYKOFLOR. Mulching was performed each year in the spring in an amount of 25 dm3 per plot, and the inoculum was applied in an amount of 10 ml per shrub. Samples for acarological examinations were collected at 4 times, in the spring and autumn of successive seasons in 2012-2013. An increase in the overall density of mites, in comparison with the control surface, was observed after mulching the soil with sawdust of coniferous trees and plant compost. On all the plots, the communities of mites were dominated by mites of the order oribatid mites. For these mites, a statistically significant increase density was recorded after mulching the soil with sawdust of coniferous trees, bovine manure and plant compost. Mulching did not increase significantly the species diversity of oribatid mites. The soil of the blackcurrant plantation was found to be inhabited by relatively large numbers of two common oribatid mites species: Punctoribates punctum and Tectocepheus velatus. An increase in the population density of Punctoribates punctum was observed after mulching with peat, sawdust and compost.
EN
The effect of copper and lead on the bionomy of Archegozetes longisetosus in the laboratory conditions was investigated. Small concentrations of copper in food (42-418 [mu]g/g) stimulated the fertility of mites, medium concentrations (713-3863 [mu]g/g) decreased their fertility, increased the mortality and prolonged the time of development, while the concentration above 4118 [mu]g/g was lethal to the mites. Smali concentrations of lead (103-1146 [mu]g/g) did not affect the bionomy of A. longisetosus, medium concentrations (1964-4380 [mu]g/g) decreased their fertility, increased the mortality and prolonged the time of development, while the concentration over 5389 [mu]g/g was close to the lethal value. The concentrations of lead over 2157 [mu]g/g also caused changes in the morphology and function of the 4th pair of the legs of mites.
PL
Zbadano wpływ miedzi i ołowiu na bionomię Archegozetes longisetosus w warunkach laboratoryjnych. Małe koncentracje miedzi w pokarmie (42-418 [mu]g/g) stymulowały płodność roztoczy, średnie koncentracje (713-3863 [mu]g/g) obniżyły płodność, zwiększyły śmiertelność i wydłużyły czas rozwoju roztoczy, natomiast koncentracja ponad 4118 [mu]g/g była dla nich letalna. Małe koncentracje ołowiu (103-1146 [mu]g/g) nie wpływały na bionomię roztoczy, średnie koncentracje (1964-4380 [mu]g/g) obniżyły płodność, zwiększyły śmiertelność i wydłużyły czas rozwoju roztoczy, natomiast koncentracja ponad 5389 [mu]g/g była bliska letalnej. Koncentracja ołowiu ponad 2157 [mu]g/g powodowała także zmiany w morfologii i funkcji czwartej pary nóg roztoczy.
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