1. Range expansion of alien nudibranch Melibe viridis (Kelaart, 1858) in the northern Adriatic SeaLovrenc Lipej, Borut Mavrič, 2017, other scientific articles Abstract: The alien nudibranch Melibe viridis (Kelaart, 1858) was recorded in the waters of Slovenia (Gulf of Trieste, northern Adriatic Sea). A specimen was photographed and fi lmed on rocky hard bottom of the Natural Monument Cape Madona in October 2016. This is the fi rst record of this large sized nudibranch for Slovenia and for the Gulf of Trieste, as well, and a new one among otherwise rare records on this species in the Adriatic Sea.
Keywords: Slovenia, non indigenous species, Adriatic Sea
Published in DiRROS: 07.08.2024; Views: 94; Downloads: 121
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2. First record of the Canestrini’s goby Ninnigobius canestrinii (Ninni, 1883) : a rare and endangered fish species from Slovenian watersDomen Trkov, Ana Fortič, 2023, other scientific articles Abstract: The Canestrini’s goby is a small goby endemic to the Adriatic basin, inhabiting brackish and fresh waters. The species is threatened by habitat destruction and pollution. For this reason, the goby is protected in part of its range, while its conservation status in other areas is not yet established. The detailed biogeography of the species should be known so that appropriate conservation measures can be taken. Despite extensive sampling of fish fauna in coastal wetlands, this species has not yet been detected in Slovenia. In this study, the first record of Ninnigobius canestrinii (Ninni, 1883) in Slovenian waters is reported along with a comprehensive review of documented records of the species.
Keywords: Gobiidae, endemic goby, endangered species, habitat endangerment, habitat destruction, biogeography, northern Adriatic basin, Slovenia
Published in DiRROS: 06.08.2024; Views: 81; Downloads: 54
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3. A preliminary overview of raptor monitoring in Slovenia : an overview of methodologies, current monitoring status and future perspectivesAl Vrezec, 2012, review article Abstract: Among 48 raptor species (birds of prey, owls, shrikes) recorded recently in Slovenia, some long-term monitoring activities are being conducted for more than half of them, mainly for conservation and research purposes. However, national coverage is achieved only in 15% of the species, whereas other monitoring programmes are more or less local. Two monitoring approaches are considered, the species specific approach and assemblage approach. Current ongoing monitoring programmes for raptors in Slovenia lack monitoring of breeding success, which is now confined to only a few owl species. Use of nestboxes should therefore be considered more broadly in the future for some species at least.
Keywords: Slovenia, raptor monitoring, birds of prey, owls, shrikes, monitoring methodology
Published in DiRROS: 06.08.2024; Views: 88; Downloads: 52
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4. First contribution to the knowledge of coralline algae distribution in the Slovenian circalittoral zone (northern Adriatic)Annalisa Falace, Sara Kaleb, Martina Orlando-Bonaca, Borut Mavrič, Lovrenc Lipej, 2011, original scientific article Abstract: Authors present new data on the coralline algal flora from Slovenia. They come from recent inspection of the Slovenian part of the Gulf of Trieste where peculiar communities, such as the biocoenosis of the coastal detritic bottom, the agglomeration of bioconcretions known in the area under the name of "trezze" or "tengue", and the bank of Mediterranean stony coral Cladocora caespitosa, occur. In such communities 11 coralligenous red algae were found. Five of them, Hydrolithon boreale, Lithothamnion minervae, L. philippii, L. sonderi and Neogoniolithon brassica-florida are newly recorded for Slovenia.
Keywords: coralline algae, Cladocora caespitosa, circalittoral, northern Adriatic, Slovenia
Published in DiRROS: 05.08.2024; Views: 106; Downloads: 103
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5. The Ural Owl, Strix uralensis macroura, in Slovenia : an overview of current knowledge on species ecologyAl Vrezec, Tomaž Mihelič, 2012, original scientific article Abstract: In Slovenia the Ural Owl, Strix uralensis macroura, is on the north-western limit of its distribution with an estimated population size of 400-700 breeding pairs. The densities of territories range between 0.9 to 13.4 territories per 10 km2, and the highest densities are reached in montane forests of the southern Dinaric region. In the forests with dominant deciduous trees, e.g. Fagus sylvatica and Quercus robur, the breeding densities are significantly higher than in the forests with a higher proportion of coniferous trees, e.g. Picea abies. The species does not select specific altitude and throughout Slovenia it occurs between 150 and 1600 m a.s.l. Most natural nests were found in tree holes or semi-holes (56%) and on the tree stumps (20%). Breeding begins between 15 March to 21 June with median clutch sizes of 3.0 eggs per nest. In the brood there are 2 young and 1.5 young are fledged in median. At present 75% of nests produce at least one young. Voles and Mice are the most frequent prey in the diet, but the Fat Dormouse, Glis glis, seems to have very important role in the post-breeding period. As a top predator, the Ural Owl influences also the distribution of other owl species in the guild through direct predation or competitive exclusion. However, it could have also a positive indirect effect on smaller species, e.g. Tengmalm’s Owl, Aegolius funereus, which are tolerated within Ural Owl territories, and are able to extend their distribution due to exclusion from certain areas of the Tawny Owl, Strix aluco, by the Ural Owl.
Keywords: distribution, breeding density, habitat, breeding biology, interactions, Slovenia
Published in DiRROS: 05.08.2024; Views: 109; Downloads: 74
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6. Quantifying the intersexual and interspecific morphometric variation in two resembling sympatric lacertids : Iberolacerta horvathi and Podarcis muralisAnamarija Žagar, Nadja Osojnik, Miguel A. Carretero, Al Vrezec, 2012, original scientific article Abstract: Podarcis muralis and Iberolacerta horvathi are sympatric, frequently syntopic, lacertids through the entire range of I. horvathi and very similar in their general body size and shape, as well as in most ecological traits. We morphologically compared adults from the area of sympatry using biometric measurements and performed analyses to investigate their sexual size and shape dimorphism. A total of 34 males and 24 females of I. horvathi, and 25 males and 23 females of P. muralis, all adult individuals, were measured. Both species showed sexual size dimorphism with females being longer (snout-vent length, SVL) than males. After SVL correction (ANCOVA), head width, length and height and mass showed to be sexually dimorphic in both species. Males carry relatively wider, longer and higher heads and were heavier than conspecific females. I. horvathi heads were more flattened than those of P. muralis and P. muralis were heavier than I. horvathi. Both species displayed the same pattern of sexual dimorphism regarding body size, head size and shape not only in direction but also in magnitude. All results confirm that both species are very similar in studied biometric characters and, together with their ecological similarities, these suggest in absence of other factors they are likely to interact when living together.
Keywords: biometric characters, sexual dimorphism, southern Slovenia, Podarcis muralis, Iberolacerta horvathi, Lacertidae
Published in DiRROS: 05.08.2024; Views: 112; Downloads: 186
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7. New records of opistobranch gastropods in the waters off Slovenia (Gulf of Trieste, Northern Adriatic Sea)Lovrenc Lipej, Borut Mavrič, Jan Simič, Domen Trkov, 2014, original scientific article Abstract: The paper deals with four opisthobranch molluscs, which were found in the Slovenian marine waters as new records. The pleurobranchomorph Pleurobranchea meckeli was found on two occasions on muddy detritic bottom in the Gulf of Piran in June of 2013 and 2014. The nudibranch Favorinus branchialis was found in May and June 2014 on turf vegetation in a very shallow area off the pier in Koper harbour. Its spawn with white eggs was also found nearby. The second nudibranch Facelina rubrovittata was found in March 2010 crawling in the intertidal zone of the Nature reserve Strunjan. The third nudibranch Dondice banyulensis was found in waters of the Nature Monument Debeli rtic on sedimentary bottom. With the fi nding of these four species, the total number of opisthobranchs recorded to date in the Slovenian part of the Adriatic Sea increased to 75 species.
Keywords: opistobranch fauna, sea, Slovenia, Mediterranean Sea, Gulf of Trieste
Published in DiRROS: 02.08.2024; Views: 118; Downloads: 67
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8. Coralline algae on biogenic formations in marine waters off Slovenia (northern Adriatic Sea)Martina Orlando-Bonaca, Borut Mavrič, Lovrenc Lipej, Sara Kaleb, Annalisa Falace, 2017, original scientific article Abstract: Two major biogenic formations, composed mainly by dead corallites of the Mediterranean stony coral (Cladocora caespitosa), have been recently studied in Slovenian marine waters. The paper presents new data about the presence of coralline algae on the biogenic formation situated off Cape Ronek and off Cape Debeli rtič. Coralline algae are very important for the creation, development and maintenance of calcareous bio-concretions that offer new niches for many invertebrates and other algae. They are listed as important builders of the coralligenous biocoenosis in the "Draft Lists of coralligenous/maërl populations and of main species to be considered by the inventory and monitoring" of the RAC-SPA, and should be further deeply studied and appropriately protected.
Keywords: coralline algae, biogenic formations, circalittoral, northern Adriatic, Slovenia
Published in DiRROS: 01.08.2024; Views: 115; Downloads: 154
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9. Molecular diversity of ʼCandidatus Phytoplasma maliʼ and ʼCa. P. prunorumʼ in orchards in SloveniaMarina Dermastia, Dorian Dolanc, Petra Mlinar, Nataša Mehle, 2018, original scientific article Abstract: Phytoplasmas from the 16Sr-X apple proliferation (AP) group are quarantine species in Europe and causal agents of the most important diseases of fruit trees within the family Rosaceae, namely apple proliferation, European stone fruit yellows and pear decline. In this study, a detailed insight into the molecular diversity of isolates of two phytoplasmas from the AP group, i. e. ‘Candidatus Phytoplasma mali’ and ‘Ca. P. prunorum’ obtained from different orchards in Slovenia, was estimated by a multilocus sequence typing, based on analysis of the genomic regions of aceF, pnp, secY and imp. With seven and five genotypes defined for ‘Ca. P. mali’ and ‘Ca. P. prunorum’ isolates, respectively, imp was the most variable among the applied markers. On the other hand, pnp was the least variable with three genotypes defined for ‘Ca. P. mali’ isolates and only one for ‘Ca. P. prunorum’ isolates. The presented results complete the survey of the AP group phytoplasma diversity in Slovenia, which has started with the recent analysis of the ‘Ca. P. pyri’. The comparison of results with those from several European countries shows an important genetic diversity of the Slovenian genotypes with some previously unknown. The genotype distribution reflects the geographic position of Slovenia. Additional grafting experiments with apricot trees tolerant to ‘Ca. P. prunorum’ demonstrated that the tolerance status is transmissible. Some possible mechanisms involved in the process are discussed.
Keywords: apple proliferation, multilocus sequence typing, phytoplasma diversity, Slovenia
Published in DiRROS: 24.07.2024; Views: 105; Downloads: 75
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10. Inventory and DNA-barcode library of ground-dwelling predatory arthropods from Krokar virgin forest, SloveniaŽan Kuralt, Urška Ratajc, Neža Pajek Arambašić, Maja Ferle, Matic Gabor, Ivan Kos, 2022, original scientific article Abstract: Background
At a time of immense human pressure on nature and the resulting global environmental changes, the inventory of biota - especially of undisturbed natural areas - is of unprecedented value as it provides a baseline for future research. Krokar, an example of such an undisturbed area, is the largest virgin forest remnant in Slovenia. It is located in the Dinaric Alps, which are believed to harbour the most diverse fauna of soil invertebrates in Europe. Nevertheless, the soil fauna of the Krokar virgin forest has not been thoroughly studied. Moreover, modern taxonomic approaches often rely on genetic information (e.g. DNA-barcodes), while extensive reference libraries from the Dinaric area are lacking. Our work, therefore, focused on addressing this lack of faunistic and genetic data from the Dinaric area.
New information
A total of 2336 specimens belonging to 100 taxa (45 spiders, 30 centipedes, 25 ground-dwelling beetles) were collected and deposited to GBIF. DNA-barcodes of 124 specimens belonging to 73 species were successfully obtained and deposited in GenBank and BOLD databases.
Keywords: zoology, faunistics, primary forest, Slovenia
Published in DiRROS: 16.07.2024; Views: 144; Downloads: 62
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