Wyniki wyszukiwania

1

Annual dynamics of spruce forest birds community

100%

Matiukas G.

The Ring

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1993

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tom 15

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nr 1-2

2

The transformations of field communities with Illecebrum verticillatum L. (Cariophyllaceae) on the borderlands of its European range (Central-Eastern Poland)

84%

Skrajna T., Gozdowski M., Lugowska M.

Polish Journal of Ecology

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2014

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tom 62

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nr 1

Changes in field communities with Illecebrum verticillatum at the north-eastern limits of the species range in Poland were recorded with the phytosociological method over the years 1994–2010. The material studied consisted of 136 phytosociological relevés which were subjected to numerical classification and ordination according to habitat gradients by the Detrended Correspondence Analysis (DCA). Changes in communities and habitats were assessed using the following indicators: species richness, the Shannon-Weiner index of biodiversity (H), Simpson’s index of domination (C) and floristic value (FV). The values of these indicators were statistically analysed using the Kruskal-Wallis test at P <0.05. Spearman’s rank correlations were calculated using Statistica 10 to determine relationships between the indicators analysed.On the basis of numerical classification 7 types of phytocoenoses were identified, representing communities at the initial and final phases of the study. At the beginning the communities included: Arnoserido-Scleranthetum with Illecebrum verticillatum, in stubble fields and Spergulario-Illecebretum verticillatum and Digitarietum ischaemi with Illecebrum verticillatum in root crops; at the end of the study they included: Vicietum tetraspermae and the community with Aperion spica-venti in cereals and the diverse, floristically common association Echinochloo-Setarietum. The communities identified reflected changes in the phytocenoses of the permanent sites due to intensification of field production. The comparison of indicators of species number, index of biodiversity and index of domination revealed significant differences. The analysis of habitat indicators according to Ellenberg demonstrated that soil temperature and moisture decreased whereas soil pH and nitrogen increased. The comparison of the taxonomic value of a species group for the association Radiolion linoidis and floristic value of communities revealed that species from the from the alliance R. linoidis were disappearing at a rapid rate.

3

Illecebrum verticillatum L. - endangered species in agrocenoses of Eastern Poland: assessment of ecological and genetic indicators for protection goals

84%

Skrajna T., Kubicka H., Rzymowska Z.

Polish Journal of Ecology

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2012

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tom 60

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nr 3

A rapid decrease in floristic biodiversity of agrocenoses has been observed in Europe for a half of century. A dynamic intensification of processes of crop production is considered one of the major reasons for shrinking of occurrence acreage and population number, or even extinction of numerous species with narrow ecological niche and high sensitivity to herbicides. These unfavourable transformations contribute to the gene pool restriction and necessity of species conservation. A representative of that group of plants is Illecebrum verticillatum (Caryophyllaceae) – a rare species endangered due to extinction in many European countries. Results of a study on decline of communities with Illecebrum verticillatum at the most northeastward sites in the Kałuszyn Upland (Podlasie Lowland, Eastern Poland) are presented. Observations were made on permanent plots for three periods (I – the years 1994–1997, period II – the years 2002–2004 and period III –the years 2008–2010) over the last 17 years. The material studied consisted of 136 phytosociological releves made by Braun-Blanquet method. Changes in phytoceoses with Illecebrum verticillatum were analysed and the habitat factors responsible for regression of these phytocenoses were identified. The degree of endangering of Illecebrum verticillatum in the area studied was evaluated on the basis of the frequency of occurrence, population abundance and genetic variation at the level of storage proteins in seeds by the modified SDS-PAGE method. Comparison of phytocenoses from different periods revealed a number of qualitative and quantitative differences. The number of sites of occurrence as well as population abundance of Illecebrum verticillatum have drastically decreased. Changes in the contribution of indicatory species (according to Ellenberg) were noted. In periods II and III a decrease in the contribution of hygrophilous and acidophilous species and an increase in that of nitrophilous species was observed. Significant changes in the structure of communities were confirmed by the calculated similarity indices (the most pronounced differences were observed between periods I and III). The phytocenoses were transformed towards degraded floristic composition, manifested by a decrease in the number of species in a plot, decrease in species diversity and increase in the index of domination. A significant increase in pH and nitrogen content at the habitats studied was noted. The phytocenoses reveal a replacement of nitrophilous for the eurytopic species. The factors having the strongest restricting effect on the occurrence of communities with Illecebrum verticillatum in the areas studied include: changes in the structure of agricultural use of land, increase in the contribution of maize in the structure of crops and intensification of production. At present 6 sites with Illecebrum verticillatum remain in the study area about 260 km2 (Kałuszyn Upland, Central-eastern Poland). Electrophoretic analysis of storage proteins in seeds of this speciesfrom these sites has shown high genetic similarity of these populations, irrespective of the distances between them (0–19% diversity among six the remaining populations). The diminished genetic pool of Illecebrum verticillatum population in this area indicates a need for the protection of this species.

4

Agro-ecological assessment of the vegetation cover of Poland’s soils

84%

Harasim A.

Polish Journal of Agronomy

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2009

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nr 01

5

Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik

Issledovanie rabochego processa dvigatelejj vnutrennego sgoranija po parametram toksichnosti

84%

Gerasimchuk Y.

Motrol. Motoryzacja i Energetyka Rolnictwa

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2013

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tom 15

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nr 3

Для получения более полной и достоверной информации о рабочем процессе при исследовании двигателей внутреннего сгорания разработана и изготовлена система автоматического отбора проб газа непосредственно из цилиндра двигателя. Система газоотбора полностью автоматизирована с возможностью одновременного определения 24-х параметров в бензиновых и дизельных поршневых ДВС, включая роторно-поршневые, которая может обеспечить одноразовый, многоразовый и беспрерывный отбор проб газа с возможностью последующего химического анализа.

6

Ocena cyklu życia metodą ekowskaźników 99 jako podstawa zintegrowanej polityki produktowej

84%

Kuzincow J.

Problemy Jakości

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2013

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tom 45

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nr 12

7

Phytoindical evaluation of some marshy habitats by means of Ellenberg's method

67%

Wylupek T.

Teka Komisji Ochrony i Kształtowania Środowiska Przyrodniczego

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2004

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tom 01

8

Płodozmian w rożnych systemach produkcji roślinnej

59%

Krzymuski J.

Acta Academiae Agriculturae ac Technicae Olstenensis. Agricultura

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1997

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tom 64

115-125

Umiejscowienie płodozmianów w systemach produkcji roślinnej wymaga ustalenia nazewnictwa tych systemów, a następnie kryteriów i granic specjalizacji. Wyróżniono trzy systemy: intensywny, średniointensywny i ekstensywny. Podstawą charakterystyki tych systemów były dane z literatury i technologie produkcji poszczególnych ziemiopłodów: zalecane (IUNG) - intensywna i standardowa oraz powszechnie stosowana w gospodarstwach indywidualnych (IERiGŻ). Opracowano 6 modelowych płodozmianów spełniających podstawowe kryteria doboru i następstwa roślin oraz ich technologii, przypisywane wyróżnionym grupom. W charakterystyce liczbowo-punktowo-słownej grup płodozmianów uwzględniono wiele wskaźników technicznych, produkcyjnych, ekologicznych i ekonomicznych. Zakładając, że w Polsce będą stosowane wszystkie trzy główne systemy produkcji roślinnej i reprezentujące je grupy płodozmianów, spełnienie podstawowych kryteriów ekologicznych, ekonomicznych i strategicznych w kraju będzie uwarunkowane właściwymi proporcjami między nimi.

9

Flora naczyniowa siedlisk poprzemysłowych miasta Wałbrzycha

51%

Klimko M., Czarna A., Baluka B.

Acta Botanica Silesiaca

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2004

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tom 01

The paper presents the current flora of vascular plants of selected spoil heaps and sedimentation tanks of two coal mines in Wałbrzych.

10

Comprehensive syntaxonomy of Molinion meadows in southwestern Poland

51%

Kacki Z.

Acta Botanica Silesiaca. Monographiae

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2007

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tom 02

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