Wyniki wyszukiwania - AGRO

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Roles and threats of the small retention reservoir Czajki

100%

Patro M.

Teka Komisji Ochrony i Kształtowania Środowiska Przyrodniczego

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2013

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tom 10

2

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Invasive plant species - threat to grasslands in river valleys

86%

Szymura M., Dradrach A., Wolski K., Swierszcz S.

Steciana

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2014

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tom 18

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nr 2

River valleys are areas of transition between aquatic and terrestrial communities, with complex biological structure. As ecotones they have high biodiversity as a result of the occurrence of species with different requirements according to soil moisture. They create ecological corridors, allowing migration of the organisms in human disturbed landscape. With these migration routes, species of foreign origin which spread to a new area also benefit. Numerous alien species are considered as invasive, and described as a threat to biodiversity due to strong competitive abilities. To describe the relationships between a number of invasive species, biodiversity and size of a river, the vegetation of 750 m fragments of the Odra and Dobra river valleys on the area of the Wrocław city were analysed. The comparison of plant communities in the valley of a large, managed river (Odra) and its small tributary (Dobra) was carried out. The plant assemblages, occurring in study areas, determined the habitat conditions on the basis of Ellenberg’s indicator values (EIV’s), as well as Shannon-Wiener biodiversity index was defined. The designed sites differed according to Shannon-Wiener biodiversity index, as well as soil properties: moisture, reaction, and fertility. In the study side of the Odra river ruderal and scrub species were dominated, whereas in case of study site of the Dobra river – meadows and ruderal species. The invasive plant species occurring in the Odra valley are: Symphoricarpos albus, Solidago gigantea, S. canadensis, Robinia pseudoacacia, Clematis vitalba, Quercus rubra, Reynoutria japonica, Parthenocissus inserta and Echinocystis lobata, and in the Dobra valley: Solidago gigantea, S. canadensis. The analysis of correlation between Shannon-Wiener biodiversity index and share of invasive species revealed statistically significant influence of occurrence of invasive species on biodiversity of plant communities in case of the Odra river.

3

Opportunities and threats in the post-antibiotic era

86%

Weiner M.

Health Problems of Civilization

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2018

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tom 12

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nr 2

The following article reviews the issue of antibiotic resistance of microorganisms to meropenem in intensive care units in Ukraine. An increase in meropenem inefficiency against microorganisms in intensive care units has been observed in the last years. The data analysis suggests a significant predominance of gram-negative flora: A. baumannii, Р. aeruginosa, Antimicrobial resistance happens when microorganisms change when they are exposed to antibiotics. Then, treatment becomes ineffective and infections persist in the body, increasing the risk of spreading to other persons. The new resistance mechanisms that are emerging and spreading globally cause that the so far applied methods of treatment do not work, threatening the human ability to resist common infectious diseases, which in turn results in prolonged infections or even death. Antimicrobial resistance occurs naturally over time, usually through genetic changes. However, the misuse and overuse of antimicrobials are accelerating this process. It has become common to overuse and misuse antibiotics both in people and animals, which are often prescribed without professional oversight. Antimicrobial resistance is a complex problem that affects all of society and is driven by many interconnected factors. Single, isolated interventions have limited impact. Coordinated action is required to minimise the emergence and spread of antimicrobial resistance.

4

Advantages and disadvantages of enterprise activity in network organisations - some aspects

86%

Skowronek-Mielczarek A.

Handel Wewnętrzny

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2014

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tom 60

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nr 1

In her article, the author focused her attention on advantages and disadvantages of cooperation undertaken by enterprises operating within the framework of network organisations in the Polish economy. Establishing cooperation by enterprises may become nowadays one of the bases of formation of their development strategies. In the conditions of high variability of the environment, the growing uncertainty of enterprise activity, there gain in importance the concepts making use of definite relationships and partnership cooperation with other entities. There appear new forms of that cooperation, new organisational structures, inter alia, network organisations. Affiliation to them is connected with achievement by enterprises of definite benefits, while, on the other hand, it may result in occurrence of some threats. The empirical research carried out in 2013 in a group of 363 enterprises belonging to various network organisations conform that really enterprises achieve definite benefits carrying out their activities within the framework of network. And they are decidedly more emphasised than definite threats.

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Clubroot [Plasmodiophora brassicae] - a threat for oilseed rape

86%

Korbas M., Jajor E., Budka A.

Journal of Plant Protection Research

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2009

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tom 49

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nr 4

446-451

Clubroot presents a serious threat to cultures of oilseed rape, especially if the share of this plant species in sowing structure is high. This is related to a long-lasting survival of pathogens resting spores in soil. The casual disease agent is Plasmodiophora brassicae Woronin - an obligatory, internal pathogen of Brassicae family which causes the formation of tumors on roots and hypocotyls. Plants with disease symptoms have a confined ability of nutrients' and water uptake and this may cause considerable losses in quantity and quality of potential yield. Monitoring performed in cultivation areas and the information obtained from farmers allowed to confirm a threat of disease occurrence in several voivodeships. At the same time there is a serious danger of the infection spread to other regions of oilseed rape crops. Confining plant infection by clubroot pathogen may be obtained mainly by applying a correct crop rotation, and also by providing resistant varieties for cultivation. In the performed greenhouse experiment, reaction to the infection caused by P. brassicae of chosen winter oilseed rape cultivars was studied. The degree of plant infection was assessed at the growth phase of green bud. It was stated that cv. Mendel revealed significantly the lowest degree of infection, as compared to the other studied cultivars. The other tested varieties were infested in a differentiated degree, however these differences were mostly not confirmed statistically. The infection level was mainly dependent on places of soil derivation.

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Grasses in Poland: invincible, but threatened

86%

Frey L.

Biodiversity: Research and Conservation

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2010

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tom 19

7

The Slender-billed Curlew Numenius tenuirostris: threats and conservation

86%

Gallo-Orsi U., Boere G. C.

Acta Ornithologica

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2001

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tom 36

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nr 1

With a population of probably less than 50 individuals, the Slender-billed Curlew is one of the most seriously endangered species in Europe. The scarcity of information on its biology and the fact that its breeding grounds are still unknown are major constraints on its conservation. This paper presents the activities of the Working Group established under the Bonn Convention. Recent intensive efforts to locate breeding areas are described. All records are kept in a specific BirdLife International database. Although hunting is considered to have been the major reason for the species' dramatic decline and is still an important threat, overgrazing of steppes and drainage of wetlands in northern Kazakhstan and south-western Siberia have canused the loss of a number of possible breeding sites recently identified.

8

Threats to the ichthyofauna of the Magurski National Park and its surroundings

86%

Kukula K.

Archives of Polish Fisheries

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2002

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tom 10

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nr 1

Fifteen sites were selected in the upper Wisłoka River drainage basin. Twelve species were recorded. In terms of abundance the dominant species in the material collected were Phoxinus phoxinus (L.), Leuciscus cephalus (L.) and Barbus peloponnesius Val. P. phoxinus clearly dominated in the smallest streams and there were significant local contributions of Salmo trutta m. fario L. to the fish biomass. In the larger streams, the minnow contribution decreased while chub and spotted barbel dominated in the biomass. Spirlin Alburnoides bipunctatus (Bloch) was also relatively abundant. Among the trout caught, relatively small specimens dominated. Poaching was most probably responsible for the lack of larger specimens in the samples. The small impoundment on the Wisłoka River and changes in stream beds caused by gravel exploitation, regulation and forestry management works also had an adverse impact on the ichthyofauna of the studied basin.

9

The lichens of the Bor na Czerwonem raised peat-bog in the Orawa-Nowy Targ Basin [Southern Poland]

86%

Bielczyk U., Betleja L.

Polish Botanical Journal

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2003

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tom 48

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nr 1

10

Opportunities and threats to small and medium-sized enterprise (SME) development in the voivodship of Warmia and Mazury

72%

Borawski P.

Roczniki Naukowe Stowarzyszenia Ekonomistów Rolnictwa i Agrobiznesu

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2007

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tom 09

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nr 3

The main objective of this article was to present the opportunities and threats development of small- and medium-sized enterprises. The survey showed that the most important internal factor having an impact on firm conditions is location close to sale markets and high quality of products and services. According to entrepreneurs, market development and widening of product range are the main opportunities for development. However, the majority of entrepreneurs indicated financial barriers and competition as the greatest threats. Most of the entrepreneurs indicated low product quality, lack of product suppliers and high prices as the main internal factors worsening their firms’ financial situations.

11

Opportunities and threats for wood processing companies of European Union

72%

Sujova A.

Intercathedra

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2008

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tom 24

12

Market threats and opportunities in the implementation of sustainable products - results from empirical study of furniture industry

72%

Grzegorzewska E., Wieckowska M.

Drewno. Prace Naukowe. Doniesienia. Komunikaty

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2017

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tom 60

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nr 200

13

Common polypody Polypodium vulgare L. in Central Poland - distribution, threats and conservation

72%

Woziwoda B., Zielinska K.

Acta Botanica Silesiaca

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2013

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tom 09

14

Present state, threats and conservation of dragonflies [Odonata] in Poland

72%

Bernard R., Buczynski P., Tonczyk G.

Nature Conservation

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2002

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tom 59

53-71

15

Current concepts on the impact of coagulase-negative staphylococci causing bovine mastitis as a threat to human and animal health - a review

72%

Sender G., Pawlik A., Korwin-Kossakowska A.

Animal Science Papers and Reports

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2017

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tom 35

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nr 2

Staphylococci are the main aetiological factor of bovine mastitis in many dairy herds. Traditionally, coagulase-negative staphylococci (CNS) were considered a normal skin microbiota. Lately the role of CNS in bovine mastitis has increased, as in some countries these pathogens had started to outnumber other mastitis aetiological factors. Given the scale of mastitis problems, the intensive use of antibiotics in dairy cattle, the number of animals and the consumption of milk products there is an urgent need to highlight the threat to both human and animal health originating from CNS. The knowledge of how CNS mastitis develops, spreads in herd and persists is limited. Bovine strains of CNS are poorly characterised; moreover, they are characterised mainly in terms of phenotypes. This review summarises knowledge on the characterisation of CNS strains, stressing the role of the bacterial genotype, in the context of the risk to human and animal health. Selected CNS virulence factors that play a role during mastitis in dairy cattle are listed and described in this paper. They have been selected subjectively by the authors in view of their significance for public health (toxins, antimicrobial resistance) and their importance for animal health (formation of biofilm, prevention of phagocytosis intracellular survival) and mastitis outcome.

16

Qualitative and environmental aspects of the use of industrial waste from plant processing

72%

Rypinska I., Bieganska M.

Towaroznawcze Problemy Jakości. Polskie Towarzystwo Towaroznawcze

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2013

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nr 4

17

Remote sensing the hydrological variability of Tanzania's Lake Natron, a vital Lesser Flamingo breeding site under threat

72%

Tebbs E. J., Remedios J. J., Avery S. T., Harper D. M.

International Journal of Ecohydrology and Hydrobiology

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2013

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tom 13

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nr 2

18

Psychoactive plants used in designer drugs as a threat to public health

72%

Rondzisty A., Dziekan K., Kowalska A.

Herba Polonica

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2015

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tom 61

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nr 2

Based on epidemiologic surveys conducted in 2007–2013, an increase in the consumption of psychoactive substances has been observed. This growth is noticeable in Europe and in Poland. With the ‘designer drugs’ launch on the market, which ingredients were not placed on the list of controlled substances in the Misuse of Drugs Act, a rise in the number and diversity of psychoactive agents and mixtures was noticed, used to achieve a different state of mind. Thus, the threat to the health and lives of people who use them has grown. In this paper, the authors describe the phenomenon of the use of plant psychoactive substances, paying attention to young people who experiment with new narcotics. This article also discusses the mode of action and side effects of plant materials proscribed under the Misuse of Drugs Act in Poland.

19

The dynamics of growth and flowering of invasive Solidago species

72%

Szymura M., Szymura T. H.

Steciana

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2015

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tom 19

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nr 3

Solidago species are one of the most widespread invasive species in Europe. In Central Europe, vegetation dominated by alien goldenrods can occupy vast areas. Their presence causes a decrease in the biodiversity level of numerous groups of organisms (plants, birds and insects). Alien Solidago also disturb biogeochemical cycles, as well as the primary productivity in infested ecosystems. In Central Europe, four alien Solidago species are considered as naturalized plants: late goldenrod (Solidago altissima L.), Canadian goldenrod (S. canadensis L.), tall goldenrod (S. gigantea Aiton), and grass-leaved goldenrod (S. graminifolia (L.) Elliot. = Euthamia graminifolia (L.) Nutt.). To analyse the dynamics of the growth and flowering of Solidago species, an experiment was conducted in which the goldenrods were planted in pots. We examined the life history traits, which are treated as being strongly connected with the invasive abilities of these species. The height, number of ramets and percentage of flowered plants were noted at ten-day intervals from May to November over a period of four years. Two native species, often co-occurring with alien goldenrods, were analysed for comparison: European goldenrod (Solidago virgaurea L.) and common tansy (Tanacetum vulgare L.). The analysed species reached their maximal height during the second and third years of the experiment. The highest ramets were noted in the case of Solidago altissima, S. canadensis and S. gigantea. A group of lower plants consisted of Solidago graminifolia, together with the native species S. virgaurea and T. vulgare. The number of ramets formed by S. graminifolia was more than two times larger than in the case of other species. All of the analysed species flowered during the time of observation but, grass-leaved goldenrod, was the only one among the alien species which flowered in all pots and 100% of individuals produced mature seeds. Its phenology (early flowering and seed ripening) was more similar to native species’ than to other alien Solidago. Our results suggest Solidago graminifolia has strong competitive abilities; however, its range is very limited. The reasons for the slow spread of this species in Europe – other than competitive limitations – should be considered.

20

Food industry in Poland and possibilities of its development. Strategic analysis

72%

Chechelski P.

Przemysł Spożywczy

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2013

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tom 67

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nr 08

During the first decade of 21st century, Polish food industry has developed very dynamically. Owing to this fact, its importance within the European Community has increased. Poland has become the sixth producer of food, with the participation of 7.4% of the EU market. However, together with the development, proceeding integration and globalization, the new opportunities but also threats have appeared. In the paper, the strengths and weaknesses of food industry which may be suitable in creating a strategy for its development have been indicated.

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