Search

Search Results

• Evaluation of population parameters and biometric data of an Eurasian Collared Dove (Streptopelia decaocto Friv.) population in the Great Plain of Hungary

  89-92

  Sámuel Varga

  Lajos Juhász

  Views:

  361

  The Eurasian Collared Dove shows different patterns in density all over Hungary. In some cases, the population has decreased to a lower level, but there are habitats where the population remained stable. Several factors were taken into consideration during the evaluation of this phenomenon. These publications state that the increased urbanization of corvids, the lack of food sources, and the changes in nesting sites caused the decrease in numbers. During our research, we intend to contrast the differences in population structure of Collared Doves that differ from each other in the density of predators presented at nesting sites. As a first step, in this paper, numerous samples (n=118) were taken from a population that is less influenced by corvid species’ nest predation. Our prediction was that the population parameters remained at the level of 1980’s, in which the population of Eurasian Collared Dove has reached its maximum, according to further publications.

  During the evaluation process, our data were collected from hunting bags near Nyíregyháza. Results were compared with former publications. We stated that the population structure, such as age and gender distribution remained stable in the evaluated population. In addition, morphometric factors of the collected individuals were also measured, such as weight, wing length, 3rd primary feather, and tail length, which were compared with former surveys. During statistical tests no significant difference was revealed among population parameters, but there were significant differences between most of the morphometric data, (p>0.05).

• The Effect of Mg Foliage Fertilization on Beetroot (Beta vulgaris ssp. esculenta var. rubra) Morphology, Quality Traits and their Relations

  67-72

  Mária Takácsné Hájos

  Ilona Szőllősiné Varga

  Views:

  109

  Mg-treatment increased solid soluble content in roots probably due to the larger assimilation area.
  The applied foliage fertilization affected inner colour intensity and uniformity in roots positively.
  The 2% Mg-sulphate solution affected pigment quantity favourably depending on varieties.
  Close correlation (r=0,71) was found between the yellow (BX) and red (BC) pigments which indicates a similar biosynthetic pathway of the two compounds.
  The Mg-sulphate foliage fertilization improves quality considerably but the individual reaction of varieties needs further studies.

• The significance of local meteorological stations in research planning

  87-91

  Zsuzsanna Novák

  Lajos Juhász

  Sámuel Zsolt Varga

  Views:

  235

  The goal of research planning is to optimize human and material resources while maximizing efficiency. If there are databases that can be used as a substitute for own data collection, effective research can be facilitated by reallocating resources. In the case of environmental studies, the knowledge of the climatic conditions of the study period is known to be a key factor in research planning process.

   In the present study, the data of our meteorological station in our research area (known as “Szamárháti Tanya”, Kesznyéten, Hungary) was compared with the measurements of meteorological stations operated by the competent water authority. Stations were taken into the study within a 10 and 20 km radius over a period of 21 months, to determine which provided more relevant data from the area.

  During the evaluation of results, the relationship between the local and regional weather stations were determined, and deductions were made from the obtained results to support the decision which of the targeted investigations could be of greater benefit.