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Query: "author" (Matej Hočevar) .

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The microstructure of scales varies in four lizard species
Anamarija Žagar, Katja Konc, Matej Hočevar, Urban Dajčman, Valentina Perc, Rodrigo Megía-Palma, Miguel A. Carretero, Damjana Drobne, Sara Novak, 2025, original scientific article

Abstract: The microstructure of lizard scales carries a phylogenetic signal in traits, reflecting key adaptations with high functional value. Using scanning electron microscopy, we examined the skin surface of four European Lacertidae species which occur in different habitats, as well as climatic conditions. We sampled Podarcis carbonelli and P. virescens from an oceanic-influenced climate, Zootoca vivipara from a temperate climate, and Gallotia galloti from three climatically distinct sites. In all species, dorsal midbody scales were proximally laminated. However, G. galloti differed from the other species, displaying spiny margins on lamellae, whereas Podarcis species and Z. vivipara had smooth margins. Within G. galloti, spiny microstructures were denser and larger in the northern, humid population compared to the high-elevation and southern, drier populations. These differences highlight the potential functional role of microstructures in skin adaptation to environmental conditions and emphasize their ecological significance in lizard species across climatic variation.
Keywords: functional morphology, Lacertidae, morphology, microornamentation, skin
Published in DiRROS: 09.06.2025; Views: 79; Downloads: 35
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Soil water repellency of two disturbed soils contaminated with different agricultural microplastics tested under controlled laboratory conditions
Špela Železnikar, Damjana Drobne, Matej Hočevar, Matic Noč, Marina Pintar, 2025, original scientific article

Abstract: Soil water repellency (SWR) significantly affects plant growth, along with surface and subsurface hydrology, posing a challenge for agricultural productivity and environmental sustainability. Nowadays, the occurrence of microplastics (MP) in the environment, particularly from agricultural practices, raises concerns about MP impact on soil properties. Among them, SWR is affected by hydrophobicity of MP particles detected in soils. This study introduces a method and presents results of a screening test to assess the effects of MP on SWR, utilizing Water Drop Penetration Time (WDPT) analysis under controlled laboratory conditions in destructed soil samples. We compared SWR of two soil types differing in portion of sand, loam and clay. Soils were mixed with three different types of MP originating from agricultural mulch films: low-density polyethylene (LDPE), biodegradable poly butylene adipate terephthalate (PBAT), and starch-based biodegradable plastics (Starch). The MP were milled to a uniform size range of some 10 to 300 μm and mixed with the soil samples. WDPT measurements were taken immediately after mixing and recorded for up to 60 s in order to find MP concentration levels at which strongly or more severely water repellency is inducted on soil samples. Our findings reveal that both, soil type and MP type significantly influence SWR, where there are notable differences observed between bio-based (Starch based) and non-bio-based (LDPE and PBAT) plastics’ effects on SWR in the two tested soil types. Data highlights the distinct behaviour of Starch in altering soil hydrophobicity, prominently different from the impact of both PBAT and LDPE. The measurement technique we have developed for quantifying SWR levels could be used for both research applications and the dissemination of findings. It can significantly enhance decision-making processes regarding the selection of optimal plastic alternatives for agricultural use.
Keywords: environmental pollution, microplastic, water drop penetration time, laboratory test
Published in DiRROS: 10.12.2024; Views: 323; Downloads: 161
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Cryogenic transmission electron images of Phaeodactylum tricornutum isolates of small cellular particles
Apolonija Bedina Zavec, Darja Božič, Matej Hočevar, Aleš Iglič, Marko Jeran, Veronika Kralj-Iglič, Anna Romolo, 2024, published scientific conference contribution

Published in DiRROS: 08.03.2024; Views: 858; Downloads: 397
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Scanning electron microscope images of Phaeodactylum tricornutum culture
Apolonija Bedina Zavec, Darja Božič, Matej Hočevar, Aleš Iglič, Marko Jeran, Veronika Kralj-Iglič, Anna Romolo, 2024, published scientific conference contribution

Published in DiRROS: 08.03.2024; Views: 797; Downloads: 404
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