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A biodiverzitás monitorozása homoki élőhelyeken a Duna-Ipoly Nemzeti Park Igazgatóság területén = Monitoring of sand steppe species and habitats in the administrative area of the Duna-Ipoly National Park Directorate

Bérces, Sándor (2011) A biodiverzitás monitorozása homoki élőhelyeken a Duna-Ipoly Nemzeti Park Igazgatóság területén = Monitoring of sand steppe species and habitats in the administrative area of the Duna-Ipoly National Park Directorate. In: Természetvédelem és kutatás a Duna--Tisza közi homokhátságon : Tanulmánygyűjtemény. Rosalia (6). Duna-Ipoly Nemzeti Park Igazgatóság, Budapest, pp. 447-471. ISBN 978-615-5241-00-0

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Abstract

A quarter of Hungary’s calcareous sand vegetation is in the administrative area of the Danube–Ipoly National Park Directorate. Therefore, monitoring sandy habitats and species is important. Monitoring is done mainly by the nationally coordinated Hungarian National Biodiversity Monitoring System (HNBMS). Estimating the population size of plant and animal species monitored by the HNBMS in the administrative area of the national park directorate. Our results show that the number of Bulbocodium versicolor, Colchicum arenarium, Dianthus diutinus, Ephedra distachya and Iris arenaria are 2 700, 200 000, 13 500, 70 000 and 70 000 individuals, respectively. Monitoring results of European Ground Squirrel (Spermophilus citellus) support the hypothesis that areas with short grass can hold more dense populations. However, such areas are found on airfields, which are intensively mown or grazed. The densest population among the studied areas was at Dunakeszi airfield. The most extensive populations of the European Ground Squirrel live in the region of Táborfalva military training area, and in the region of Ürbő. The monitoring of Carabus hungaricus showed that the choice of habitat it prefers exclusively open habitat types. Within the steppic vegetation, this beetle is associated with the more dense tall grass type of vegetation. In practice it means that the habitat of Carabus hungaricus would be turned by natural succession into a scrubby or a wooded habitat type. Succession can be managed by grazing, but the management of the grasslands can easily lead to a change in the habitat into a less dense short grass type, which is insufficient for the beetle. Our own experience is that if grass cover is low, the predation pressure rises, which can be seen in the high number of injured beetles. Optimising grazing is crucial for the survival of Carabus hungaricus in an area. Vegetation mapping near Nagykőrös showed that the steppic oak vegetation native to this area is fragmented. Habitat fragments are islands of native vegetation surrounded by plantations of non-native and invasive trees. These plantations are the main spreading hotspots of herbaceous and arboreal invasive plants. Data gathered with monitoring is used primary in the daily work, planning and consulting of, for example, forest managers, environmental officers and land managers, but data is also used to help scientific research. To preserve threatened, endemic species, appropriate treatment of the habitats are needed. The funding of European Union nature conservation budgets helps us to manage areas and treat species to preserve a good nature conservation status.

Item Type: Book Section
Subjects: Q Science / természettudomány > QK Botany / növénytan
Q Science / természettudomány > QK Botany / növénytan > QK01 Systematic botany / növényrendszertan
Q Science / természettudomány > QK Botany / növénytan > QK50 Plant geography (phytogeography) / növényföldrajz
Q Science / természettudomány > QL Zoology / állattan
Depositing User: Sándor Bérces
Date Deposited: 11 Dec 2017 08:40
Last Modified: 11 Dec 2017 08:40
URI: http://real.mtak.hu/id/eprint/65416

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