Összesen 2 találat.


001-es BibID:BIBFORM056526
Első szerző:Batáry Péter
Cím:Microhabitat preferences of Maculinea teleius (Lepidoptera: Lycaenidae) in a mosaic landscape / Batáry Péter, Örvössy Noémi, Kőrösi Ádám, Vályi Nagy Marianna, Peregovits László
ISSN:1210-5759 1802-8829
Megjegyzések:The Scarce Large Blue (Maculinea teleius) is an endangered butterfly throughout Europe due to its special life-cycle and habitat loss. Our aims were to describe the microhabitats available to this butterfly, to test what factors influence the presence and density of M. teleius adults and to investigate the relationship between host ant species and M. teleius. The vicinities of eight fenswere sampled, where there are four types of microhabitats available for this butterfly: Narrowleaf Cattail (Typha angustifolia), Purple Loosestrife (Lythrum salicaria), Marsh Woundwort (Stachys palustris) and Purple Moorgrass (Molinia coerulea) dominated vegetation. In five transects (50 ? 5 m) around each fen (running from the edge of the fen into the meadows) the number of imagos was counted twice a day during the flight period. Along the transects, the following parameters were measured or assessed: numberof flowerheads of foodplant (Sanguisorba officinalis), microhabitat type, grazing intensity, soil humidity, vegetation height and host ant presence. The four microhabitat types differed significantly in soil humidity, vegetation height, foodplant density and distancefrom a fen. Generally the Typha microhabitat, situated closest to fens, had the highest soil humidity and vegetation height, followed by the Lythrum, Stachys and finally the Molinia microhabitat along a gradient decreasing soil humidity and vegetation height. Thefoodplant was most abundant in the Lythrum and Stachys microhabitats. Using linear mixed models and forward stepwise manual selection we found that microhabitat type was the most important factor determining the presence of M. teleius. The local grazing intensity had no direct effect but flowerheads of the foodplant had a positive effect on the abundance of butterflies. The number ofbutterflies was significantly higher in quadrats where the host ant (Myrmica scabrinodis) was present compared to those where they were absent. Our results suggest that grazing should be continued in order to maintain the current distribution of microhabitats andsurvival of the butterflies.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény hazai lapban
Maculinea teleius
habitat use
host ant
wet meadow
Megjelenés:European Journal Of Entomology. - 104 (2007), p. 731-736. -
További szerzők:Örvössy Noémi (1979-) (ökológus) Kőrösi Ádám Vályi Nagy Marianna Peregovits László
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001-es BibID:BIBFORM056382
Első szerző:Tóthmérész Béla (ökológus)
Cím:Edge effects on ground-dwelling beetles (Carabidae and Staphylinidae) in oak forest-forest edge-grassland habitats in Hungary / Béla Tóthmérész, Dávid D. Nagy, Szabolcs Mizser, Dávid Bogyó, Tibor Magura
ISSN:1210-5759 1802-8829
Megjegyzések:Forest edges are essential to the maintenance of biodiversity at the landscape level. according to the edge effect hypothesis, diversity is higher in an edge than in adjacent areas. We tested the edge effect hypothesis for carabids and staphylinids in an oak forest-forest edge-grassland complex in the Hajdúság Landscape Protection area (Hungary). The habitat types were as follows: (1) a closed oak forest with shrubs and herbaceous plants, (2) a forest edge with extensive ground vegetation and shrub cover and (3) grassland with dense herbaceous vegetation. We collected data from 60 pitfall traps (2 spatial replicates - 3 habitats - 10 traps). The gLM results showed that the species richness of carabids was higher at the edge of the forest than in the grassland and forest interior; the number of carabid individuals was highest in the grassland. The number of staphylinids and their species richness were signifcantly lower in the grassland than in the forest edge and interior. The results of principal coordinates analysis showed that the assemblages of both taxa in the forest edge and interior were separated from the assemblage in the grassland area. There were signifcant characteristic species for the edge habitat, as revealed by the IndVal (indicator species analysis) method. our fndings suggest that forest edges play a vital role in the maintenance of the diversity of carabid and staphylinid assemblages.
Tárgyszavak:Természettudományok Környezettudományok idegen nyelvű folyóiratközlemény külföldi lapban
edge-associated species
forest edge
ground beetles
indicator species
rove beetles
Megjelenés:European Journal Of Entomology. - 111 : 5 (2014), p. 686-691. -
További szerzők:Nagy Dávid (1986-) (biológus-ökológus) Mizser Szabolcs (1977-) (biológus-ökológus) Bogyó Dávid (1980-) (biológus-ökológus) Magura Tibor (1969-) (ökológus)
Pályázati támogatás:TÁMOP 4.2.4. A/2-11-1-2012-0001
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