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Osijek, Croatia

During hydrobiological investigations of the Natura Park Kopački rit over a number of years within the project "Protection of the Kopački rit reserve" and "Protection of Kopački rit waters - environmental interactions of the Danube and the flooded area", the results were recorded showing the flooding dynamics of the area, which indicate that flooding of the Kopački rit through the Hulovo canal starts at the water level lower than +85 cm (79.69 m a. s. I.) on the water meter Apatin, and through the the Sakadaš lake at the water level of +167 cm (80.51 m a. s. l.) on the same water meter. There is a need to determine at which water level it can be stated that the flood in Kopački rit occurred. Additionally, a proposal was given on how to define flood in qualitative terms.

Krcmar S.,Odjel za biologiju | Lajos P.,Odjel za biologiju
Entomologia Generalis | Year: 2012

The attraction of female horse flies to unbaited and single baited canopy traps, using different aged equine urine from a pregnant mare, stallion, gelding and mare, was studied in the Monjoroš Forest (Eastern Croatia). Horse flies were collected in a significantly higher number in traps baited with these kind of urine compared to unbaited control traps. The pregnant mare urine collected 6.4 times more horse flies than unbaited traps, while traps baited with a stallion's urine, urine from a gelding and traps baited with the urine of a mare collected 5.4, 3.9 and 3.5 times as many horse flies, respectively, than unbaited traps. The number of collected females of Tabanus sudeticus Zeller 1842, Tabanus tergestinus Egger 1859, and Haematopota pluvialis (Linnaeus 1758) did not differ significantly when compared to all tested equine urine. Canopy traps baited with gelding urine collected significantly more of females Chrysops relictus Meigen 1820 than did traps baited with other equine urine. In the second experiment, in the area of the Bansko Hill (Eastern Croatia), the number of collected female horse flies did not differ significantly when compared to aged equine urine (pregnant mare, stallion, gelding, mare) and 1-octen-3-ol. Also, the number of females of the most abundant species T tergestinus and Tabanus bromius Linnaeus 1758 collected from equine urine (pregnant mare, stallion, gelding, and mare) baited canopy traps, and 1-octen-3-ol baited canopy traps, did not differ significantly. © 2011 E. Schweizerbart'sche Verlagsbuchhandlung, D-70176 Stuttgart.

Paradikovic N.,Poljoprivredni fakultet u Osijeku | Vinkovic T.,Poljoprivredni fakultet u Osijeku | Stolfa I.,Odjel za biologiju | Tkalec M.,Poljoprivredni fakultet u Osijeku | And 4 more authors.
Poljoprivreda | Year: 2012

Numerous studies conducted on garlic (Allium sativum L.), have proved the presence of antioxidants, phenolic compounds, sulfur compounds and several vitamins. The aim of this study was to investigate the differences in the content of total phenols, ascorbic acid; total antioxidant activities of four winter Slavonian garlic cultivars, as well as establishment of correlations between these parameters. The total antioxidant activity and the content of ascorbic acid and total phenols in four cultivars of winter Slavonian garlic were spectrophotometrically determined. Genetic diversity of winter Slavonian garlic cultivars significantly affected the content of ascorbic acid and the total antioxidant activity. The total antioxidant activity significantly positively correlated with the content of ascorbic acid (r2 = 0.64, p = 0.006), while the content of total phenols and total antioxidant activity were not significantly related. Cultivar PFO 1 had the highest antioxidant activity (8.006 μmol Trolox /g FW) and the highest ascorbic acid content (8.57 mg /100 g FW), thus, the best quality of the four tested garlic cultivars.

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