Wyniki wyszukiwania - Biblioteka Nauki

1

Bioparameters of selected herb species in High Tatra Mts. spruce ecosystems

100%

Kukla J. , Kovacova M. , Schieber B.

Polish Journal of Ecology

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2003

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tom Vol. 51, nr 3

369-376

EN

Bioparameters of selected herb species were studied on five control (undamaged) and five bark beetles damaged parallel plots established in form of two vertical transects in the spruce ecosystems of Bielovodska valley (High Tatra Mts.). The most abundant life forms in the studied phytocoenoses were hemicryptophytes (65%), the least abundant geophytes (5%). According to significance of differences in the average length of shoots the sensitivity of herb species to different ecological conditions and calamitous changes of the spruce stands density is a follows: Homogyne alpina > Luzula sylvatica = Dryopteris dilatata > Oxalis acetosella. According to significance of differences in energy content the sensitivity of species was following: Luzula sylvatica > Oxalis acetosella > Dryopteris dilatata > Homogyne alpina > Vaccinum myrtillus. However, the mean values calculated for undamaged and for damaged plots were significantly different (P<0.05) only in the case of weight of Luzula sylvatica shoots.

2

Bioparameters of selected herb species in High Tatra Mts. spruce ecosystems

86%

Kukla J. , Kovacova M. , Schieber B.

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2003

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tom 51

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nr 3

EN

Bioparameters of selected herb species were studied on five control (undamaged) and five bark beetles damaged parallel plots established in form of two vertical transects in the spruce ecosystems of Bielovodská valley (High Tatra Mts.). The most abundant life forms in the studied phytocoenoses were hemicryptophytes (65%), the least abundant geophytes (5%). According to significance of differences in the average length of shoots the sensitivity of herb species to different ecological conditions and calamitous changes of the spruce stands density is as follows: Homogyne alpina > Luzula sylvatica = Dryopteris dilatata > Oxalis acetosella. According to significance of differences in energy content the sensitivity of species was following: Luzula sylvatica > Oxalis acetosella > Dryopteris dilatata > Homogyne alpina > Vaccinium myrtillus. However, the mean values calculated for undamaged and for damaged plots were significantly different (P <0.05) only in the case of weight of Luzula sylvatica shoots.

3

Nitrogen compounds content in some species of spice herbs

72%

Grzeszczuk M. , Jadczak D.

Herba Polonica

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2007

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tom 53

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nr 3

EN

In 2003-2004 studies aimed to compare nitrogen compounds levels in some species of spice herbs were carried out. Species chosen for the experiment were: tarragon (Artemisia dracunculus L.), hyssop (Hyssopus officinalis L.), lemon balm (Melissa officinalis L.), chervil (An- thriscus cerefolium (L.) Hoffm.), summer savory (Satureja hortensis L.), marjoram (Origanum majorana L.), basil (Ocimum basilicum L.) and leafy type parsley (Petroselinum hortense Hoffm. var.foliosum). In the fresh plant raw material content of total nitrogen, total protein, nitrates and nitrites was determined. Herb species had a significant influence on the amount of chemical compounds. Significantly higher content of total nitrogen and total protein was found in lemon balm and hyssop while the highest nitrate level - in hyssop. Among all spice herbs tested, the highest amount of nitrites was detected in chervil.

PL

W latach 2003-2004 przeprowadzono doświadczenie mające na celu porównanie zawartości związków azotowych w wybranych ziołach przyprawowych. Badaniom poddano następujące gatunki: bylica estragon (Artemisia dracunculus L.), hyzop lekarski (Hyssopus officinalis L.), melisa lekarska (Melissa officinalis L.), trybula (Anthriscus cerefolium (L.) Hoffm.), cząber ogrodowy (Satureja hortensis L.), majeranek ogrodowy (Origanum majorana L.), bazylia ogrodowa (Ocimum basilicum L.) i pietruszka naciowa (Petroselinum hortense Hoffm. var. foliosum). W świeżym materiale roślinnym określono zawartość azotu ogółem, białka ogółem, azotanów i azotynów. Poziom związków azotowych oznaczonych w doświadczeniu wykazywał istotne zróżnicowanie w zależności od gatunku rośliny. Istotnie wyższą zawartością azotu ogólnego i białka ogółem charakteryzowały się melisa oraz hyzop lekarski, azotanów - hyzop lekarski, a azotynów - trybula.

4

Antifungal activity of some medicinal plants of the Lamiaceae family

58%

Lamer-Zarawska E. , Rzadkowska-Bodalska H. , Karlowicz K.

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1991

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tom 39

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nr 4

5

The changes of energy and carbon in top soil and above-ground part of Dryopteris filix-mas species along the succession of beech forest

58%

Kuklova M. , Kukla J. , Simkova I.

Polish Journal of Ecology

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2014

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tom 62

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nr 3

EN

The objective of research was to verify, whether succesion of nudal beech forests affects energy, ash and Ct contents of top layers of cambisols and aboveground part of dominant herb species Dryopteris filix-mas. The forest stands, from the juvenile stemwood to the stand of primeval forest character, were located in Slovenské stredohorie Mts (Western Carpathians). It has been found out that the successional stages of beech stands significantly affected soil characteristics of the ecotope, in the case of Dryopteris filix-mas species significant difference was observed only for the energy content. Approximately 7.5% less energy was accumulated in humus subhorizons Oof of mature beech stands (110, 200 years) compared with the juvenile stemwoods. On the other hand, in Aoq horizons markedly more energy (by 35–66%) was accumulated in the soils of mature beech phytocoenoses. The influence of stand succession differentiated ash content in Aoq horizons too. Significant difference (7.6%) was found between 85 and 200-year-old beech stand. Within studied parameters only accumulation of Ct in top soil layers was not significantly affected by stand succession. The relation between energy and ash accumulation in top soil layers of studied beech stands showed significant correlations between the variables (P <0.01). Approximately 62% of energy variability in humus subhorizons Ool of the studied stands was affected by the ash content (lower was the ash content – higher was the energy content). In Aoq soil horizons this dependence was 50% (higher was the ash content – lower was the energy content).

6

Secondary succession of the vegetation in the young shelterbelt [Turew area, Western Poland]

58%

Bernacki Z.

Polish Journal of Ecology

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2004

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tom 52

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nr 4

EN

Plant succession (herb and tree species) in newly planted midfield shelterbelt (0.63 ha of area) was investigated during eight years. Changes of vegetation were found to be similar to the succession on abandoned fields. During first years simple plant communities, consisted by common and very common species, dominated by one species, like: Arthemisia absyntium and Chenopodium album, Conyza canadiensis or Apera spica-venti, substituted year by year. The number of species reached maximal value (48) three years after shelterbelt planting. Among all trees forming the shelterbelt the fastest growing were the species of early succession stages (having light seeds) like: poplar, birch, larch and pine. Those trees form the canopy layer already after four years of succession. That process increased the rate of succession to forest community. Maximum biomass of herb plants (347.84 g dry wt. m⁻²) was noted in fifth year of succession. Litter biomass increased during all study period. Corridor effect of shelterbelt for plants wasn’t evidenced. Introduction of the forest and clear-cutting species is relatively slow and proceeds from the forest adjacent to the shelterbelt.