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1

Mozliwosci doskonalenia technologii produkcji siana w warunkach podgorskich

100%
Michna G., Zywczok H., Zyzak W., Kolat S., Brejta W.
Biuletyn Informacyjny. Instytut Zootechniki
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1991-92
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tom 29
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nr 5-6
39-48
2

Impacts of moving, grazing and edge effect on Orthoptera of submontane grasslands: perspectives for biodiversity protection

100%
Rada S., Mazalova M., Sipos J., Kuras T.
Polish Journal of Ecology
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2014
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tom 62
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nr 1
Semi-natural grasslands managed by mowing and grazing are an important part of European landscape. Orthopterans are considered to be an appropriate indicator to assess the impact of agricultural management on grassland ecosystems. We studied effects of mowing, grazing and two kinds of edges on Orthoptera of submontane hay meadows and pastures in the Hrubý Jeseník Mts. (Czech Republic). Using sweep netting and pan trapping, we sampled orthopteran assemblages associated with the farmland managed for at least five years under Czech agri-environmental schemes. In total we collected 2253 individuals of orthopterans representing 14 species. The short-term impacts of mowing and grazing were tested by multivariate ordination analyses. The results indicate that mowing significantly decreased Orthoptera species abundance. Conversely, the response of orthopterans to grazing was not statistically significant and appeared to be species-specific. The abundance of acridid Gomphocerippus rufus increased substantially with grazing, which is in contrast with its negative response to mowing. The negative influence of mowing on grassland inhabitants can be mitigated by lower mowing frequency and by providing temporary uncut refuges. The results of generalized linear models showed significant increase of both species richness and total abundance of Orthoptera towards the baulks. Therefore, the refuges should be established primarily along grass baulks or similar types of permanent grassy edges. As a general rule an effort should be made when managing grasslands to ensure the highest habitat heterogeneity.
3

Species diversity of submontane grasslands: effects of topographic and soil factors

80%
Kopec M., Zarzycki J., Gondek K.
Polish Journal of Ecology
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2010
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tom 58
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nr 2
The grassland ecosystems generally, and the submontane meadow vegetationparticularly, are important components of the natural diversity of landscape. In the montane range (600–1000 m a.s.l.) (Beskidy Mts. Southern Poland) the richness (number of species) and the diversity (assessed with several indices) of meadow vegetation (permanent grassland and formerly arable land) were studies on 356 plots of 100 m² each using the method of Braun-Blanquet. The correlation with several topographic factors (altitude, inclination, exposure), as well as with soil chemical factors (pH, nutrient like P and other macroelements content) was elaborated and the Ellenberg’s indicator values in respect to moisture, acidity and fertility were calculated. It was found that the main factor diminishing species diversity was the increasing of altitude from 343 m to 963 m and soil acidification from 3.4 to 6.5. No significant difference was noted between the diversity indexes (Shannon-Wiener and Simpson) of three study communities. The soil fertility affected the number of species in the plant communities in the opposite way. In the case of communities of Molinio-Arhenatheretea class occurring on more fertile habitats, fertility increase caused a decline in the number of species, whereas in the communities from Nardo-Callunetea class developed on extremely poor habitats – the number of species was growing with increasing fertility
4

Ocena nawożenia naturalnego na łące w rejonie podgórskim. Część II. Zawartość składników mineralnych

70%
Kacorzyk P., Kasperczyk M.
Acta Agraria et Silvestria. Series Agraria
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2006
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tom 48
In the years 2000-2002 an effect of natural fertilizers: manure and liquid manure as well as mineral ferilizers on the certain meadow sward components contents were compared. Each fertilization kind negatively affected the Ca content of the meadow sward. On the contrary, mineral ferilization with the manure and higher portions of the liquid manure influenced positively the other components amounts (P, K, Mg, Na).
5

Ocena nawożenia naturalnego na łące w rejonie podgórskim. Część I. Skład botaniczny, plony suchej masy oraz zawartość białka ogólnego i cukrów prostych

61%
Kacorzyk P., Kasperczyk M.
Acta Agraria et Silvestria. Series Agraria
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2006
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tom 48
In 2000-2002 an effect of the natural fertilizers on the floral composition as well as on the meadow sward yield was examined. It was found that the meadow fertilization with natural fertilizers is appropriate, because under the relatively low costs distinct incereases of the dry matter yield — 21%, total protein — 25% and water soluble saccharides - 16% can be obtain. Almost 50% lower yield of the fertilization components of the manure and liquid manure when compared with the mineral fertilizers, expressed in the growth of the hay yield and total protein, was recompensed with the richer botanical composition of the meadow sward, especially with the presence of the white clover.
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