Wyniki wyszukiwania

1

The agricultural restructuring in Hungary 1990-2001

100%

Kovacs K.

Geographia Polonica

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2003

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tom 76

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nr 1

2

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Measuring of the Hungarian dairy farms efficiency

63%

Kovacs K., Szucs I.

Roczniki Naukowe Stowarzyszenia Ekonomistów Rolnictwa i Agrobiznesu

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2016

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tom 18

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nr 5

The general objective of my research was to explore the main indicators of the dairy sector in Hungary, and then define and systematize their efficiency and the factors relevant concerning dairy farms. Moreover, my objective is to introduce the most commonly used methods for measuring efficiency, which can explore hidden reserves within the sector. Based on the secondary database (FADN), I created a partial efficiency index system of economic efficiency in four main economic areas (capital, production costs, human resources, livestock) which were characterized by using dairy farms efficiency differences of different size, year and legal form categories. The model input variables comes from Hungarian FADN database. I confirmed that the used efficiency methods (partial indicators) for measuring complex efficiency level were higher in my sample in the case of the large-sized farms than the for small and medium-sized farms.

3

Niektore osiagniecia Rolniczego Instytutu Badawczego Wegierskiej Akademii Nauk

51%

Szundi T., Kovacs K., Pinter J.

Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin

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1994

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tom 191

79-84

4

Effect of oxytocin and its analogues on the chemotaxis of Tetrahymena: evolutionary conclusions

51%

Csaba G., Kovacs K., Kohidai L.

Acta Protozoologica

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2000

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tom 39

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nr 4

5

Effect of oxytocin and its analogues on the phagocytosis of Tetrahymena: outstanding impact of isotocin

51%

Kovacs K., Kohidai L., Pallinger E., Csaba G.

Acta Protozoologica

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2002

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tom 41

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nr 2

6

The effect of stream bed morphology on shredder abundance and leaf-litter decomposition in Hungarian midland streams

45%

Kovacs K., Selmeczy G. B., Kucserka T., Abdel-Hameid N.-A. H., Padisak J.

Polish Journal of Environmental Studies

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2011

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tom 20

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nr 6

The aim of this study was to examine the differences between natural and morphologically modified stream bed sections in Hungarian midland streams by means of macroinvertebrate shredder abundance and leaf litter decomposition, and identify the key drivers of poor shredder fauna in modified water bodies. Eight sampling sites on three low order Hungarian watercourses were selected and studied between the springs of 2008 and 2009. Three types of leaf litter were collected and placed into leaf litter bags that were fixed to a metal wire net on the bottom of the river bed. Samples were taken in every four weeks. Leaf litter content and decomposition rate was determined and macroinvertebrates identified. Gammaridae dominated among shredders and their proportion did not differ significantly in bags. The shredders’ counts and the leaf litter decay rates were different in the experimental streams. The sampling sites located in modified stream sections, with limited availability of food, exhibited lower shredder densities but higher decomposition rates (k>0.01 d⁻¹) than those observed in sites of undisturbed bed morphology with rich allochtonous organic matter (k<0.0077 d⁻¹). However, no significant differences were obtained in decay rates among the leaf species. Our results suggest that shoreline vegetation and bed morphology are two equally important factors in determining functional properties of streams; and leaf litter decomposition rate is not only a function of shredder density. Thus decomposition rate can be an important functional variable for ecological status assessment of the water.

Ograniczanie wyników

2 Acta Protozoologica

1 Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin

1 Geographia Polonica

1 Polish Journal of Environmental Studies

1 Roczniki Naukowe Stowarzyszenia Ekonomistów Rolnictwa i Agrobiznesu

6 Kovacs K.

2 Csaba G.

2 Kohidai L.

1 Abdel-Hameid N.-A. H.

1 Kucserka T.

1 Padisak J.

1 Pallinger E.

1 Pinter J.

1 Selmeczy G. B.

1 Szucs I.

1 Szundi T.

1 2016

1 2011

1 2003

1 2002