Sas-Kovacs Eva-Hajnalka
@mtariicrisurilor.ro
Tarii Crisurilor Museum
Scopus Publications
Scopus Publications
Severus-Daniel Covaciu-Marcov, Sára Ferenţi, István Urák, Éva-Hajnalka Sas-Kovács, Alfred-Ştefan Cicort-Lucaciu, and István Sas-Kovács
Finnish Zoological and Botanical Publishing Board
The importance of artificial underground habitats for biodiversity is becoming more and more apparent. Abandoned railway tunnels are artificial, underground habitats of considerable biodiversity, including several species of conservation concern. We surveyed 16 abandoned railway tunnels in 2014 in Romania for the following faunal groups: amphibians, terrestrial isopods, and spiders. Amphibians occurred primarily in flooded tunnels, isopods were present in moist tunnels with woody debris, while spiders were widespread and exhibited the greatest diversity in railway tunnels. Some species of amphibians breed in tunnels. The greatest diversity was observed in the entrance zones of tunnels; because railway tunnels are generally isolated from the surrounding rock, they can be colonized only from the entrances. In areas lacking natural subterranean cavities and habitats, railway tunnels are important habitats for many species, including troglophilic spiders and soil-dwelling isopods.
Éva-Hajnalka Sas-Kovács, István Urák, Diana Cupşa, István Sas-Kovács, Sára Ferenţi, and László Rákosy
Schweizerbart
Wolf spider (Araneae: Lycosidae) assemblages were studied in a deciduous forest from a Natura 2000 site in north-western Romania. A number of 1661 adults belonging to 19 species were collected by pitfall trapping. The highest abundance was achieved by Pardosa alacris in all of the three analyzed sites (marsh, forest edge, forest interior), followed by Trochosa spinipalpis in the marsh and forest, Trochosa terricola in the edge and forest, Alopecosa pulverulenta, Piratula hygrophila in the marsh and Arctosa lutetiana in the edge. Both the observed and estimated species richness was greatest in the marsh, while the inventory completeness was highest in the edge. The presence of some rare species (Hygrolycosa rubrofasciata, Pardosa maisa) along with the different composition of the wolf spider communities highlight the need of conserving the original (micro)habitat heterogeneity of natural forests for ensure the survival of diverse ground-dwelling spider assemblages.
Éva-Hajnalka SAS-KOVÁCS, István SAS-KOVÁCS, and István URÁK
The Scientific and Technological Research Council of Turkey
The present work reports for the first time the occurrence of Alopecosa psammophila (Araneae: Lycosidae) in Romania. It was identified in the autumn of 2013 in 2 habitats located in northwestern Romania, at a Natura 2000 site. Both habitats are represented by open and dry sandy grasslands. Comparison of standard body measurements showed that males have longer legs than females, but the total body length of females is greater than that of males.
Éva-Hajnalka Sas-Kovács, István Urák, István Sas-Kovács, Severus-Daniel Covaciu-Marcov, and László Rákosy
Informa UK Limited
Shores of channels with thermal water provide an adequate microclimate for maintaining wolf spiders in activity during winter. Of the spiders collected after the winter survey of 22 thermal habitats from western Romania, 93.02% were juveniles and subadults, while the remaining individuals belonged to the following seven species: Arctosa leopardus, Pardosa amentata, Pardosa proxima, Pirata piraticus, Piratula latitans, Trochosa robusta and Trochosa ruricola. The reproductive period of some species is altered under the influence of neighbouring hot waters, as revealed by the capture of females with egg sacs and spiderlings, during winter.
Éva-Hajnalka Sas-Kovács, István Urák, and István Sas-Kovács
National Library of Serbia
The presence of a rare species, Pardosa maisa, is reported for the first time in Romania. Seven males and 4 fe- males were collected in spring, using pitfall traps, from four marshy habitats located near two natural reserves within the Natura 2000 site "Câmpia Careiului", northwestern Romania.
S.D. Covaciu-Marcov, A.Ş. Cicort-Lucaciu, I. Sas, Diana Cupşa, Eva Kovacs, and Sara Ferenţi
National Library of Serbia
The diet of some populations of Lissotriton montandoni from north-western Romania is composed of prey belonging to 20 categories. The food components of the Carpathian newts are similar to those of other species of newts. Most of the prey are aquatic animals, but terrestrial prey also has a high percentage abundance. The consumed prey categories are common in the newts' habitats as well, but in natural ponds the prey item with the highest abundance in the diet is not the most frequent one in the habitat. Thus, although the Carpathian newts are basically opportunistic predators, they still display a certain trophic selectivity.
Diana Cupsa, Tibor Hartel, Severus-Daniel Covaciu-Marcov, István Sas, Éva-Hajnalka Kovács, and Marius Groza
Brill
Abstract We examined the diet of Hyla arborea over its entire activity period (March to late September, 2004), and analysed a total of 585 adult samples. From the stomach contents we identified plant remains, shed-skin fragments, and animals. We identified a total of 2976 prey items, almost all of which originated from the terrestrial environment. Adult araneans and coleopterans were the most abundant prey items in the diet of the studied tree frogs. Some of the prey items become abundant in certain parts of the year (e.g. Homoptera, Lepidoptera larvae, Trichoptera). The dietary diversity index is high and exhibits seasonal changes. During the period of study an important seasonal change was observed in feeding intensity and in the type of consumed prey. Our results show that Hyla arborea has a broad dietary diversity which was expected as a consequence of exploiting the habitat both vertically and horizontally, possibly allowing access to a broader spectrum of prey.