Search

Search Results

• Természetvédelmi és gyepgazdálkodási vizsgálatok a Dinnyési-Fertő gyepeiben

  31-38

  Views:

  77

  The present study includes coenological results of the effects of grazing with Hungarian grey cattle in saline grasslands in Dinnyési Fertő Nature Conservation Area. This kind of managment is favourable for the grazing and trampling tolerant grass species and decreases the proportion of the dicots.The classification of species based on the social behaviour types of Borhidi shows the spreading of the ruderal competitor species, mainly Cynodon dactylon with the progress of the grazing season. Grazing prefential from a bird conservation aspect increases the number of species, however, it modifies the mass relations between species in a negative way.

• Effects of ceasing mowing and grazing on the vegetation of wet grasslands of Badacsonytördemic

  23-32

  Ildiko Turcsanyi-Jardi

  Tunde Szabo-Szolosi

  Nikolett Csukas

  Views:

  135

  During the work we examined the vegetation of a wet area near Badacsonytördemic. The grassland has been mowed and grazed intensively by Hungarian grey cattle until 2010, and it was abandoned afterwards. We surveyed three sample areas: the continuously grazed pasture, the mowed grassland and the additional pasture, which was grazed for one month each year.
  Records were made in June 2010 and 2020. We utilized 4×4 m quadrats, and gave the cover of species in percent. Relative nitrogen values (NB), soil moisture values (WB), Social Behaviour Types according to Borhidi, nature conservation values (TVK) according to Simon were also used.
  Based on the results, the vegetation of the area degraded greatly in ten years, its diverse nature disappeared, weeds and invasive species became dominant and species with good foraging value declined. No aggressive competitors were found in 2007, but Solidago gigantea appeared with great cover by 2020. In addition, many weed species appeared, and the ones which were already present in 2010, have increased their cover. Cirsium arvense was a newly appearing weed. Dead biomass also increased greatly.
  To avoid further degradation, we suggest to reintroduce the management to these areas again. To set back weeds and invasive species, regular mowing would be efficient. It would be important to carefully set the date of mowing so that it prevents the spreading of seeds. Mowed plants must be removed from the area as soon as possible.

• The seasonal effect on the vegetation of Hungarian grey cattle pasture in 2022 and 2023 - A case study

  29-36

  Eszter Kovespataki

  Ildiko Turcsanyi-Jardi

  Barnabas Wichmann

  Eszter Salata-Falusi

  Views:

  30

  The "Szűzföld" area, managed by the Pro Vértes Public Foundation, has been managed for nature conservation and economic grazing since 1998 with Hungarian grey cattle. In the present work the vegetation data of the pasture were analysed for the years 2022-2023, in order to investigate the effect of the weather conditions in an extremely dry year (2022) and an extremely wet year (2023) using 2 × 2 m coenological records. To analyse the ecological indicators of species, we used Borhidi's relative plant ecological indicators: relative nitrogen demand (NB) and relative soil water and soil moisture (WB) scores. We also assessed the data according to Simon's conservation value categories (TVK) and Borhidi's social behaviour types (SBT). The grassland management assessment of the vegetation was based on the forage value scores of the species used by Klapp et al.

  The results showed no significant differences in species in the two years, but significant differences in cover values. In the year with rainfall, the proportion of accompanying species decreased, while the proportion of weeds and natural disturbance tolerant species increased. The amount of grasses and legumes increased, which are important for grassland management.

• Degradation degree evolution under different grassland management

  35-44

  Krisztina Varga

  Istvan Csizi

  Views:

  69

  The objective of this manuscript is to clarify the changes in vegetation structure of an extensively managed grassland association under different land use practices. In the grasslands of the Hungarian Great Plain, the westernmost part of the Eurasian steppe, the largely decreasing grazing livestock numbers and the almost disappearing pastoral grazing make the topic very topical. We analysed the last 4 years of the study period 2009-2020 and found that the lowest degradation rates were measured in the meadow utilisation management, with values ranging from 0.277-0.463 in the 11th year of the experiment. And the highest degradation values were measured in the treatment with the overgrazing mode, with degradation degrees 3.43-5.0 in the 11th year of the experiment. In the treatment demonstrating the effect of overgrazing, we measured a high increase in the cover value of the weed Hordenum murinum, which is very dangerous for sheep, between 2017 and 2020, with an average of 107.6%.