Ograniczanie wyników

Czasopisma help
Autorzy help
Lata help
Preferencje help
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 53

Liczba wyników na stronie
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 3 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych:  Eastern Poland
help Sortuj według:

help Ogranicz wyniki do:
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 3 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
1
100%
The article analyses the regional and cohesion policy background for establishing the major instruments of EU regional policy for Eastern Poland, namely the Operational Programme Development of Eastern Poland for 2007-2013 and five Regional Operational Programmes for Warminsko-Mazurskie, Podlaskie, Lubelskie, Świętokrzyskie and Podkarpackie Voivodships. The discussion focuses on their role not only in evening interregional disparities, but also in supporting rural regions lagging behind in economic development. This gives basis to concluding on the model of regional policy applied in Eastern Poland in 2007-2013 and its adequacy to existing social and economic conditions.
This article investigates factors influencing knowledge of renewable energy types among 200 residents of 13 villages in Lubelskie province using survey data collected in 2013. Survey summary responses indicate that solar and wind energy were best known and biofuels the least known among five energy types considered in the questionnaire. Factors associated with varying degrees of renewable energy sources were identified using the multivariate ordered probit approach. The largest change in probability that a respondent’s self-assessed knowledge level fell into a specific category was associated with being a farmer, viewing the subject matter of the survey as important, having high income, being from a large household and, being married.
A subarctic-boreal relict species, Salix lapponum, found within the area of the Łęczna-Włodawa Lakeland (Eastern Poland), is particularly threatened with extinction due to the southern limit of its range and the specific conditions of its occurrence. This conclusion is evidenced by a systematic reduction in the number of its locations, which is accompanied by a decrease in the numbers of individuals making up its populations. The aim of the present study was to determine habitat conditions of the occurrence of Salix lapponum populations on the basis of an analysis of physico-chemical factors of groundwater at the sites associated with various stages of succession taking place in small peatland water bodies. The results of this study confirm the trend that the stands and population numbers of this species are decreasing with the intensification of ecological succession and the degree of its progress and at the same time show that this species exhibits a wide amplitude of many of the investigated factors. Among the groundwater parameters under investigation, the low level of total nitrogen, phosphorus fraction and DOC as well as the high level of Ca, pH and electrolytic conductivity can be considered to be a set of conditions that promote the maintenance of Salix lapponum populations. On the other hand, in the case of nitrates, nitrites, sulphates as well as the Na, K and Mg ions, the Kruskal-Wallis statistical test showed that the distribution of their values was invariant in relation to the studied habitats, which is probably evidence that they do not determine the development or extinction of the investigated populations in these habitats.
8
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Use of EU funds in promotion of peripheral areas

86%
Subject and purpose of work: The aim of this paper is to assess the use of EU funds in promotion of peripheral areas on the example of five provinces of Eastern Poland. The detailed objectives are defined as follows: identification of projects co-financed by the EU aimed at promoting economy or tourism, including promotion of tourism-related products and assessment of using the EU funds in promotion of Polish enterprises abroad. Materials and methods: The research material is a database of projects co-financed from EU funds for 2007-2013, projects devoted to carrying out promotional activities (economic or tourist promotion) were selected for the analyses. Results: Spatial and quantitative diversification of promotional activities co-financed from EU funds in Eastern Poland was quite significant, with the highest absorption in the Lublin province. Among beneficiaries implementing promotional projects the largest group were entrepreneurs and local governments, primarily at the commune level. Conclusions: In the examined area, EU funds were used primarily to promote enterprises on foreign markets, also through participation in trade fairs organised on many continents, and to promote economy and tourism of local government units.
Zwackhia viridis is a crustose lichen being found in forests throughout Poland. It belongs to rare species being labelled primeval forest lichens which are associated with large forest complexes. The eastern populations of Z. viridis were examined using RAPD technique in order to check whether geographic distance affects genetic diversity of the populations under study. The analysis of seven populations of that species showed large intraspecific diversity. The greatest genetic similarity occurred between populations from the north-eastern area of the country, about 300 km away from each other. In dendrograms, only these populations have simple matching distance greater than 50%.
Mass occurrence of nuisance algal species Gonyostomum semen is observed in European humic lakes since 1970s, initially in the Scandinavian countries, then in eastern, central and western part of the continent. In 2002 mass appearances of this flagellate were found in three of 12 investigated humic lakes situated in the Eastern Poland. Lakes with Gonyostomum were situated within small geographical area. The biomass of algae was usually higher than 1 mg dm⁻³ and during summer its distribution was frequently uneven with higher values found in deeper layers. Based on this research we conclude, that G. semen during its spreading on the new area had preferred 6–8 m deep and small lakes with thermal and oxygen stratification as well as with low calcium content, slightly acidic to slightly alkaline pH and moderate color of water.
Searching for spraints (excrements) and tracks is widely used for monitoring of European populations of otters Lutra lutra. Data collected in Central and Eastern Poland were analysed in order to evaluate the environmental factors affecting the detection of otter signs during field surveys. At each out of 1111 sites studied from 1996–1998 numbers of otter spraints and tracks as well as distance searched to detect first sign were noted. At each site several environmental variables were recorded to identify factors that may have affected the survey results. The variation in numbers of spraints and tracks found at each positive site was not related to the habitat quality and any other habitat features (including tree and shrub cover, presence of potential shelters) analysed, except the number of tracks was positively related to bridge potential. The distance searched was the most variable indicator of otter occurrence. It increased with the width of river and at sites with few potential sprainting sites, with bridges of poor potential or with no bridges at all, and where many signs of human and domesticated animals activity were noted. The results indicate that detection of otter signs is partially affected by specific elements unrelated to habitat potential and therefore numbers of spraints should not be used as an indicator of otter habitat preference. At a regional scale variation in number of spraints and tracks, as well as distance searched was related to otter occupancy expressed in the form of percentage of positive sites at three study areas. This study shows that measuring the distance searched provides additional indication of otter status at a regional scale and could be used to identify specific habitats where detection of otter signs during surveys is difficult.
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.
17
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Pelecypods from the Upper Eocene of East Poland

72%
The pelecypod assemblage from Upper Eocene sandy deposits of the vicinity of Siemień and Luszawa (eastern part of the Polish Lowlands) consists of 23 species. The majority of the species are typical of the Bartonian.
Changes in habitat conditions in the area of Eastern Poland (Polesie Podlaskie), often associated with anthropopressure, cause a reduction in the number of locations and population size of valuable and rare bog plant species, including a Pleistocene boreal relict, Salix myrtilloides. The aim of this study was to determine the current conditions of occurrence of this species based on the physico-chemical parameters of peatland piezometric groundwater. The results confirm the declining trend in the number of locations and abundance of this species in the past few decades, but at the same time they confirm the wide range of amplitude of the many investigated factors. Among the groundwater parameters studied, the low level of nitrogen fractions, phosphorus fractions, cations, and DOC can be considered to be a set of conditions promoting the preservation of the Salix myrtilloides population. The higher concentrations of phosphates, sulfates, Na, Ca, and Mg as well as higher pH and electrolytic conductivity can be considered to be presumably unfavorable. The lack of significant differences in the values of the piezometric water factors investigated for the sites with different population sizes of the studied species requires the identification of other limiting factors and the implementation of programs for its active protection in Poland.
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 3 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.