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Registros recuperados: 64
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Occurrence of entomopathogenic nematodes in Polish soils Ciência Rural
Tumialis,Dorota; Pezowicz,Elżbieta; Skrzecz,Iwona; Mazurkiewicz,Anna; Maszewska,Justyna; Pietraszczyk,Joanna Jarmuł; Kucharska,Kornelia.
ABSTRACT: Entomopathogenic nematodes ( Steinernematidaeand Heterorhabditidae) were studied in Polish soils according to the: season, habitat and altitude. In total, 167 soil samples were taken from 111 localities in Poland along north-south transect. Entomopathogenic nematodes were isolated from 53 soil samples (31.7%). Nematodes species were identified genetically from 16 samples, and in all other 37 samples nematodes were determined to the genus level. Three species of the genus Steinernema ( Steinernema kraussei, S. feltiae, S. carpocapsae) and one of the genus Heterorhabditis( Heterorhabditis megidis) were recorded. Steinernema feltiaewas the most common species. There was not a significant association between the occurrence of nematodes and season...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Distribution; Steinernema; Heterorhabditis; Poland; Season; Habitat.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000701126
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Participation and Protected Areas Governance: the Impact of Changing Influence of Local Authorities on the Conservation of the Białowieża Primeval Forest, Poland Ecology and Society
Niedziałkowski, Krzysztof; Mammal Research Institute, Polish Academy of Sciences, Poland; Sustainability Research Institute, School of Earth and Environment, University of Leeds, UK ; kniedz@zbs.bialowieza.pl; Paavola, Jouni; Sustainability Research Institute, School of Earth and Environment, University of Leeds, UK; J.Paavola@leeds.ac.uk; Jędrzejewska, Bogumiła; Mammal Research Institute, Polish Academy of Sciences, Poland; bjedrzej@zbs.bialowieza.pl.
According to the new conservation paradigm, protected areas should contribute to the socioeconomic development of host communities, and the latter ought to be included in participatory decision making concerning these areas. However, the understanding of participation is ambiguous and there are at least three major approaches, which may have different impacts on the governance of protected areas. We examine the case of the Białowieża Primeval Forest in order to trace the effectiveness of changing modes of participation as well as to discuss the limitations and problems of public participation. Between 1918 and 2010, the role of local authorities changed from no influence to limited control over decision making regarding designation and...
Tipo: Peer-Reviewed Reports Palavras-chave: Biał Owież A; Biodiversity conservation; Governance; National park; Participation; Poland; Protected areas.
Ano: 2012
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Four Ponto-Caspian and one American gammarid species (Crustacea, Amphipoda) recently invading Polish waters Naturalis
Jazdzewski, Krzysztof; Konopacka, Alicja; Grabowski, Michal.
The paper discusses recent drastic changes in the composition of Polish gammarid fauna, that occurred at the end of 20th century. This change was caused by the invasion of five alien species – four of Ponto-Caspian origin (Dikerogammarus haemobaphes, D. villosus, Obesogammarus crassus and Pontogammarus robustoides) and one of American origin (Gammarus tigrinus). Probable invasion routes are presented.
Tipo: Article / Letter to the editor Palavras-chave: Biogeography; Gammarids; European waters; Poland.
Ano: 2002 URL: http://www.repository.naturalis.nl/record/534313
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Xyeloblacus gen. nov. (Hymenoptera: Braconidae: Blacinae) parasitoid of Xyelinae (Xyelidae: Hymenoptera) Naturalis
Achterberg, C. van; Altenhofer, E..
The new genus Xyeloblacus (type species: Xyeloblacus leucobasis spec, nov.) is described and illustrated; it belongs to a new tribe (Xyeloblacini van Achterberg), and two Palaearctic species are included. The type species has been reared from two Xyela spp. ("Symphyta"; Xyelidae; Xyelinae) in Austria.
Tipo: Article / Letter to the editor Palavras-chave: Hymenoptera; Braconidae; Blacinae; Xyeloblacus; Palaearctic; Austria; Poland; Japan; Key; 42.75.
Ano: 1997 URL: http://www.repository.naturalis.nl/record/318162
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[The Fossil Record of the Eurasian Neogene Insectivores (Erinaceomorpha, Soricomorpha, Mammalia), Part I.]: Poland Naturalis
Rzebik-Kowalska, B..
Tipo: Article / Letter to the editor Palavras-chave: Insectivore faunas; Neogene; Poland; 38.22; 42.84.
Ano: 2005 URL: http://www.repository.naturalis.nl/record/215596
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A redescription of the Indo-West Pacific Spirobranchus corrugatus Straughan, 1967 (Serpulidae, Polychaeta), and an alternative hypothesis on the nature of a group of Middle Miocene microfossils from Poland Naturalis
Hove, Harry A. ten; Nishi, Eijiroh.
Spirobranchus corrugatus, a little known species, is redescribed based on ample material from Australia, Indonesia, Japan and the Seychelles. The species is characterized by a seemingly porous tube, sunk into the substrate. Characteristically, the opercular plate shows a number of radial ridges on its distal surface, resembling Middle Miocene microfossils from Poland. The ventral rim of the opercular bulb of Sp. corrugatus bears numerous ocelli, with single lenses. A comparison with similar species is given.
Tipo: Article / Letter to the editor Palavras-chave: Polychaeta; Serpulidae; Indo-Pacific; Miocene; Poland.
Ano: 1996 URL: http://www.repository.naturalis.nl/record/505214
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ECONOMIC DEVELOPMENT IN A FLEDGLING DEMOCRACY: THE POTENTIAL OF THE POLISH AGRICULTURAL EXTENSION SYSTEM AgEcon
Doye, Damona G..
Agricultural economists who serve as educators in emerging democracies have the opportunity to contribute to economic development by building human capital. A channel for educators to share lessons learned in these countries could benefit individuals preparing for assignments in foreign countries. Understanding the cultural and social differences in decision-making systems is critical to successful educational program development and implementation. Individuals in the emerging democracies often need training in management and market economics to apply at institutional as well as personal levels. Similar training for recipients of economic development funds could result in more effective application of funds.
Tipo: Journal Article Palavras-chave: International education; International extension; Poland; International Development; Teaching/Communication/Extension/Profession.
Ano: 1993 URL: http://purl.umn.edu/15192
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Dairy supply chain restructuring and its impact on farmers' revenues in Poland AgEcon
Falkowski, Jan; Malak-Rawlikowska, Agata; Milkczarek-Andrzejewska, D..
Supply chain restructuring and its impact on farmers’ situation have become the subject of vast interest among agricultural economists. However, there have been relatively few studies trying to quantitatively asses this issue. This paper analyses the impact of supply chain modernisation on dairy farmers in Poland. It is shown that joining the modern marketing channel positively affects farmers’ revenues. The decision to enter the modern channel is crucially dependent on access to funds and facilitated by having larger cow herds.
Tipo: Conference Paper or Presentation Palavras-chave: Supply chain; Restructuring; Dairy sector; Poland; Agribusiness; Livestock Production/Industries.
Ano: 2008 URL: http://purl.umn.edu/44060
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Productivity Change in Polish Agriculture: An Application of a Bootstrap Procedure to Malmquist Indices AgEcon
Balcombe, Kelvin George; Davidova, Sophia; Latruffe, Laure.
This paper employs bootstrapping to correct for bias and to construct confidence intervals for Malmquist TFP indices derived with DEA. It uses these results to investigate the productivity change in Polish agriculture during a crucial period of the country's transition to a market economy, 1996-2000, when Poland was preparing for accession to the European Union. The bias corrected estimates show regress in productivity at an annual rate of 4 percent. The confidence intervals suggest that between two-thirds and four-fifths of the sample farms (250) in different years might have experienced no change in productivity. The cluster analysis based on confidence bounds reveals three paths of productivity change. Farms which recorded an increase in productivity at...
Tipo: Conference Paper or Presentation Palavras-chave: Malmquist indices; Bootstrapping; Poland; Farms; Productivity change; Productivity Analysis; D24; Q12; C6.
Ano: 2005 URL: http://purl.umn.edu/24572
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Farm Heterogeneity and Efficiency in Polish Agriculture: A Stochastic Frontier Analysis AgEcon
Hockmann, Heinrich; Pieniadz, Agata.
This paper deals with the estimation of a random coefficient model. The virtue of this approach is that it considers firm heterogeneity, which conventional SFA models do not. Applying the model to Polish farms, the results indicate that the conventional random and fixed effect models overestimate the inefficiency score. In addition, the reasons for inefficiency are analysed. It is shown that despite the fragmentation of Polish agriculture, there is no evidence for scale inefficiency. Moreover, inefficiency could partly be attributed to factors that affect management input and requirements on farms.
Tipo: Conference Paper or Presentation Palavras-chave: SFA; Random component model; Poland; Agriculture; Management; Productivity Analysis.
Ano: 2008 URL: http://purl.umn.edu/44278
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Do Cooperative Banks Really Serve Agricultural Sector in Poland? AgEcon
Zawojska, Aldona; Siudek, Tomasz.
The aim of the paper is to assess the potential of cooperative banks for serving agricultural sector in Poland and to identify the areas with the most development potential. We discuss the transformation process in the cooperative banking system under market economy, and in particular investigate importance of cooperative banks for farms' financing on the basis of our survey of banks. Moreover, the role of cooperative banks in transmission of Government policy supporting farm sector in Poland is discussed. We find that despite growing competition from the commercial banking sector, farms and rural households in Poland are still of major importance for the cooperative banks in Poland.
Tipo: Conference Paper or Presentation Palavras-chave: Cooperative banks; Agricultural sector; Poland; Agricultural Finance; G21; O18; Q14.
Ano: 2005 URL: http://purl.umn.edu/24479
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The Use of Bootstrapped Malmquist Indices to Reassess Productivity Change Findings: An Application to a Sample of Polish Farms AgEcon
Balcombe, Kelvin George; Davidova, Sophia; Latruffe, Laure.
The paper assesses the extent to which sampling variation affects findings about Malmquist productivity change derived using Data Envelopment Analysis (DEA), in the first stage calculating productivity indices and in the second stage investigating the farm-specific change in productivity. Confidence intervals for Malmquist indices are constructed using Simar and Wilson's (1999) bootstrapping procedure. The main contribution of the paper is to account in the second stage for the information provided by the bootstrap in the first stage. The DEA standard errors of the Malmquist indices given by bootstrapping are employed in an innovative heteroscedastic panel regression, using a maximum likelihood procedure. The application is to a sample of 250 Polish farms...
Tipo: Conference Paper or Presentation Palavras-chave: Productivity; Malmquist; Bootstrapping; Second-stage regression; Poland; Productivity Analysis.
Ano: 2006 URL: http://purl.umn.edu/25793
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DOŚWIADCZENIA ODDOLNYCH INICJATYW ROZWOJU REGIONALNEGO ORAZ PERSPEKTYWY DLA PROGRAMU LEADER+ W REGIONIE DOLINY STRUGU W POLSCE AgEcon
Gramzow, Andreas.
This paper presents the results of a case study of local economic development in Dolina Strugu, Podkarpackie voivodship, Poland. Its aim is to analyse local development problems and chances, to investigate the potential of endogenous initiatives to support economic development, and to examine the prospects for an implementation of the EU’s initiative Leader+. The case study primarily relies on interviews conducted with local government authorities, NGOs, business owners and farmers in summer 2005. The hitherto unsatisfactory income situation in agriculture has been particularly precarious for the region because two thirds of the people in working age are employed in agriculture and alternative job opportunities are mostly absent. To respond to these...
Tipo: Working or Discussion Paper Palavras-chave: Rural development; Endogenous initiative; Leader+; Cooperation; Poland; Ländliche Entwicklung; Endogene Initiative; Kooperation; Polen; Rozwój wsi; Inicjatywa lokalna; Współpraca; Polska; Community/Rural/Urban Development; Consumer/Household Economics; Farm Management; Land Economics/Use; P 32; Q 13; R 11.
Ano: 2006 URL: http://purl.umn.edu/91960
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DYNAMICS OF POLISH WHEAT PRICES IN COMPARISON TO SELECTED WORLD PRICES IN A PERIOD OF ECONOMIC TRANSFORMATION AgEcon
Figiel, Szczepan.
Poland's market reforms implemented in 1990 should possibly result in increasing price linkages between Polish and internationally traded agricultural commodities like wheat. Using regression and cointegration analysis Polish monthly wheat prices were found to be generally unrelated to selected world prices over the period of 1990/91 through 1996/97 mainly because of Polish government's intervention.
Tipo: Conference Paper or Presentation Palavras-chave: Poland; Price analysis; Intervention price policy; Wheat; Crop Production/Industries; Demand and Price Analysis.
Ano: 1998 URL: http://purl.umn.edu/20864
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Re-evaluation of Welfare Changes during the Transition in Poland AgEcon
Huffman, Sonya Kostova; Johnson, Stanley R..
The costs of shortages and rationing are not captured by standard consumer price indices. Thus the change in real gross domestic product (GDP) per capita is an overestimate of welfare losses in transition economies. In this study virtual prices are used to calculate new cost-of-living indices, making it possible to construct more accurate pre- and postreform welfare comparisons. The results for Poland using virtual prices show a 62 to 84 percent decline in welfare over the transition period 1987 to 1992. This welfare loss is approximately one-third the value obtained using actual prices.
Tipo: Working or Discussion Paper Palavras-chave: Transition economy; Poland; Cost-of-living indices; Political Economy.
Ano: 2000 URL: http://purl.umn.edu/18567
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Financing Agri-Environmental Programs in Poland: The Importance of Regional Preferences AgEcon
Ziolkowska, Jadwiga; Kirschke, Dieter.
The main objective of the paper is to study the importance of regional preferences in financing agri-environmental programs. The analysis is based on results of a case study conducted in South-eastern Poland. As environmental protection in agriculture is complex and often considered in political strategies, it is worth analyzing the differences in perception of the respective environmental objectives from a regional perspective. Taking into account natural conditions and the economic situation in agriculture in the voivodship Podkarpackie, the question is, how regional objectives could be achieved effectively with a given budget. Using linear programming, we discuss in this paper, how regional preferences would guide budget allocation.
Tipo: Conference Paper or Presentation Palavras-chave: Agri-environmental programs; Environmental objectives; Linear programming; Budget allocation; Poland; Environmental Economics and Policy; Q14; Q57; C6.
Ano: 2006 URL: http://purl.umn.edu/25658
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CHAIN QUALITY MANAGEMENT IN CO-OPERATIVES AgEcon
Hanf, Jon Henrich; Pieniadz, Agata.
This paper investigates the relationship between the chosen quality strategy and the vertical co-ordination mechanism of a focal company by using new institutional economics, as well as strategic management approaches. The theoretical findings are tested using evidence from 19 of the largest Polish dairy cooperatives, surveyed in spring 2006. The results show that all co-ops recognise the changing market requirements and are treating food quality as more than plain food safety and the ability to continuously reproduce an ex ante defined set of attributes. However, compared to investor-owned dairies, co-ops are disadvantaged in quality-based competition due to their lower flexibility and access to financial and qualified human resources. To overcome this...
Tipo: Conference Paper or Presentation Palavras-chave: Network theory; Relationship management; Quality management; Cooperatives; Poland; Institutional and Behavioral Economics.
Ano: 2007 URL: http://purl.umn.edu/7604
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The Determinants of Polish Farmers' Credit Interest Rates: Hedonic Price Analysis and Implications for Government Policy AgEcon
Petrick, Martin; Latruffe, Laure.
Our micro-econometric analysis of agricultural credit market outcomes in Poland sheds new light on the relationship between contractual arrangements and interest rates. An innovative theoretical framework based on a hedonic market model is developed. We interpret the factors that influence interest rates as "quality" components of the credit contract. We use unique data including detailed information about Polish farmers' credit contracts. Both nominal interest rates and bank fees are considered. Results show that banks prefer liquid types of collateral, and care little about the loan's purpose. The effect of government subsidies on interest rates is small compared to the officially declared reduction of the nominal rate.
Tipo: Conference Paper or Presentation Palavras-chave: Agricultural finance; Credit policy; Hedonic regression; Micro-econometrics; Poland; Agricultural and Food Policy; Financial Economics; Q12; Q14; P32.
Ano: 2005 URL: http://purl.umn.edu/24757
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Classification of Agri-Tourism / Rural Tourism SMEs in Poland (on the Example of the Wielkopolska Region) AgEcon
Przezborska, Lucyna.
The paper is based on data from a questionnaire survey (interviews) conducted in the western part of Poland on 183 rural tourism and agri-tourism small and medium enterprises. The classification of enterprises was based on the methodology proposed by Wysocki (1996) and included the k-means clustering algorithm. As the result of the research three types of SMEs were separated, including the top resilient enterprises aimed mainly at tourism activity and usually connected with horse recreation, a cluster of mixed SMEs for which tourism activity was an additional and less important source of income, and a group of SMEs for which tourism activity was an additional but important source of income. The classification may be used as a hint for rural development...
Tipo: Conference Paper or Presentation Palavras-chave: Agri-tourism; Rural tourism; SMEs; Rural development; Poland; Resource /Energy Economics and Policy; Q12.
Ano: 2005 URL: http://purl.umn.edu/24670
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MODELING HETEROGENEITY IN PRODUCTION MODELS: EMPIRICAL EVIDENCE FROM INDIVIDUAL FARMING IN POLAND AgEcon
Hockmann, Heinrich; Pieniadz, Agata; Goraj, Lech.
This discussion paper deals with the estimation of a random coefficient model. The virtue of this approach is that it considers firm heterogeneity, which conventional SFA models do not. Applying the model to Polish farms, the results indicate that the conventional random and fixed effect models overestimate the inefficiency score. In addition, the reasons for inefficiency are analyzed. It is shown that despite the fragmentation of Polish agriculture, there is no evidence for scale inefficiency. Moreover, inefficiency could partly be attributed to factors, which affect the management input and requirements on farms.
Tipo: Working or Discussion Paper Palavras-chave: SFA; Random component model; Poland; Management.; Agribusiness; Farm Management; Productivity Analysis; Research Methods/ Statistical Methods; Q12; D24.
Ano: 2007 URL: http://purl.umn.edu/91733
Registros recuperados: 64
Primeira ... 1234 ... Última
 

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