1. New recordings of opisthobranch mollusks (Mollusca: Opisthobranchia) in the Slovenian portion of the Adriatic SeaLovrenc Lipej, Borut Mavrič, Sašo Moškon, 2012, other scientific articles Abstract: Four opisthobranch species have been recorded in Slovenian coastal waters for the very first time: Tylodina perversa, Janolus cristatus, Eubranchus tricolor and Dicata odhneri. The first three were to some extent expected. D. odhneri was found on two occasions, representing new data on this rather rare and less known nudibranch species. The total number of recorded opisthobranch gastropod species is now 70.
Keywords: biologija, zoologija, taksonomija, Janolus cristatus, Eubranchus tricolor, Tylodina perversa, Dicata odhneri, first record, Nudibranchia, Jadransko morje, Gulf of Trieste
Published in DiRROS: 07.08.2024; Views: 80; Downloads: 117
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2. Vodne ptice in ujede Cerkniškega polja (Južna Slovenija) v letih 2007 in 2008, s pregledom zanimivejših opazovanj do konca leta 2010Dejan Bordjan, 2012, original scientific article Abstract: Od konca februarja 2007 do sredine februarja 2008 je bilo na Cerkniškem polju (južna Slovenija) v desetdnevnih obdobjih (dekadah) opravljenih 73 sistematičnih popisov vodnih ptic in ujed. Cilji raziskave so bili: ugotoviti številčnost in časovno dinamiko pojavljanja vrst, opredeliti njihov status, napraviti primerjavo s preteklim obdobjem sistematičnega zbiranja podatkov v letih 1991–1992, podati ocene gnezdečih, selitvenih in prezimujočih populacij ter na njihovi osnovi naravovarstveno ovrednotiti to območje. Zbrani so bili tudi drugi ornitološki podatki, pridobljeni do konca leta 2010. Med začetkom maja in začetkom septembra leta 2007 je voda na območju raziskave presahnila, tako da se je zadržala le v strugah potokov, vodna površina pa je bila deloma ali v celoti zaledenela od sredine novembra 2007 do začetka februarja 2008. Do konca leta 2010 je bilo na Cerkniškem polju skupaj zabeleženih 129 vrst vodnih ptic in ujed, v obdobju 2007/2008 pa 83. Dinamika pojavljanja vrst z več kot devetimi opazovanji je podrobneje predstavljena v pregledu vrst. Status gnezdilke ima 27 vrst, še nadaljnjih sedem pa je prehranskih gostov, ki gnezdijo v okolici območja raziskave. Največ vrst (118) ima status preletnega gosta, medtem ko je vrst s statusom poletnega (34) oziroma zimskega gosta (40) manj. Med zabeleženimi vrstami je 34 izjemnih in 21 redkih gostov. Prezimovalcev je 16, letovalcev sedem, vse leto pa se je tukaj zadrževalo šest vrst. V vseh dekadah obdobja raziskave so bile opažene štiri vrste: mlakarica Anas plathyrhynchos, siva čaplja Ardea cinerea, kanja Buteo buteo in postovka Falco tinnunculus. V več kot 90 % dekad je bila zabeležena še velika bela čaplja Ardea alba. Dve vrsti sta bili v obdobju 2007/2008 evdominantni (mlakarica 27,2 %, kanja 10,1 %), še dve pa dominantni (reglja Anas querquedula 7,4 %, liska Fulica atra 6,4 %). Največ osebkov je bilo zabeleženih konec marca in v začetku aprila (do 1978 os.), največ vrst (48) pa sredi aprila. Število vrst in osebkov je bilo med majem in avgustom zaradi presahlega jezera majhno. Najmanjše območje pojavljanja so imeli kormoran Phalacrocorax carbo ter skupina rac iz rodov Aythya, Bucephala in Mergellus. Galebi, čaplje, pobrežniki, lunji Circus sp. in rdečenoga postovka Falco vespertinus so se pojavljali na večjem delu območja raziskave. 10 gnezdilk izpolnjuje kriterije za oznako varstveno najpomembnejše vrste, od katerih sta dve (kostanjevka Aythya nyroca, veliki škurh Numenius arquata) vrsti globalne varstvene pozornosti, sedem pa vrste evropske varstvene pozornosti. Med negnezdilkami se 14 vrst vodnih ptic in ujed pojavlja v pomembnem številu (> 0,1 % biogeografske populacije), od tega se jih pet vsaj občasno pojavlja z več kot 1 % biogeografske populacije. Dve vrsti (rjavovrati ponirek Podiceps grisegena, kozica Gallinago gallinago) v Sloveniji gnezdita samo na Cerkniškem polju, še šest vrst pa ima tukaj vsaj 40 % slovenske gnezdeče populacije.
Keywords: vodne ptice, ujede, številčnost (biologija), dinamika pojavljanja (biologija), naravovarstveno vrednotenje
Published in DiRROS: 02.08.2024; Views: 137; Downloads: 100
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3. Mixtures of Chemical Pollutants at European Legislation Safety Concentrations: How Safe are They?Raquel Negrão Carvalho, Augustine Aruqwe, Selim Ait-Aissa, Anne Bado-Nilles, Stefania Balzamo, Anders Baun, Shimshon Belkin, Ludek Blaha, Francois Brion, Daniela Conti, Vesna Flander-Putrle, Valentina Turk, 2014, original scientific article Abstract: The risk posed by complex chemical mixtures in the environment to wildlife and humans is increasingly debated, but has been rarely tested under environmentally relevant scenarios. To address this issue, two mixtures of 14 or 19 substances of concern (pesticides, pharmaceuticals, heavy metals, polyaromatic hydrocarbons, a surfactant, and a plasticizer), each present at its safety limit concentration imposed by the European legislation, were prepared and tested for their toxic effects. The effects of the mixtures were assessed in 35 bioassays, based on 11 organisms representing different trophic levels. A consortium of 16 laboratories was involved in performing the bioassays. The mixtures elicited quantifiable toxic effects on some of the test systems employed, including i) changes in marine microbial composition, ii) microalgae toxicity, iii) immobilization in the crustacean Daphnia magna, iv) fish embryo toxicity, v) impaired frog embryo development, and vi) increased expression on oxidative stress-linked reporter genes. Estrogenic activity close to regulatory safety limit concentrations was uncovered by receptor-binding assays. The results highlight the need of precautionary actions on the assessment of chemical mixtures even in cases where individual toxicants are present at seemingly harmless concentrations.
Keywords: morje, analizna kemija, biologija, evtrofikacija, hranilne snovi, fitoplankton, onesnaževanje, Piranski zaliv
Published in DiRROS: 02.08.2024; Views: 97; Downloads: 137
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4. Obročkanje ptic v Sloveniji leta 2014 in rezultati prvega telemetrijskega spremljanja selitvene poti afriške selivkeAl Vrezec, Dare Fekonja, Katarina Denac, 2015, original scientific article Abstract: In 2014, 162 bird species were recorded during the bird ringing activities in Slovenia. Of 155 species, 62,275 birds were ringed, and 107 recoveries of birds ringed in Slovenia and found abroad, 148 foreign recoveries in Slovenia and 1395 local recoveries were recorded. The most frequently ringed species were Blackcap Sylvia atricapilla and Great Tit Parus major. As far as ringed nestlings are concerned, Great Tits and Barn Swalllows Hirundo rustica predominated. Considering the recoveries ringed of found birds abroad, the commonest were Black-headed Gulls Chroicocephalus ridibundus and Mute Swans Cygnus olor. The farthest recovery was a Barn Swallow Hirundo rustica found in the Democratic Republic of Congo (5171 km away). Among the more interesting finds was also the so far southernmost recovery of a Sand Martin Riparia riparia found in Israel. Let us also mention the first recovery of a Corncrake Crex crex, which bred and was ringed in 2013 at Planinsko polje (central Slovenia) and was found in the 2014 breeding season in the Czech Republic. Among rare species, two Little Buntings Emberiza pusilla were caught and ringed. After nine years, the Roller Coracias garrulus bred again in Slovenia in 2014 and its nestlings were ringed. The paper also brings the description of the migration route of the first African migrant, the Black Stork Ciconia nigra, marked with a GPS/GSM telemetric device, which migrated across the Adriatic Sea, Sicily and Sahara to Nigeria.
Keywords: obročkanje, telemetrija, črna štorklja, najdbe (biologija)
Published in DiRROS: 29.07.2024; Views: 126; Downloads: 88
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5. Quantitative assessment of the apical and basolateral membrane expression of VEGFR2 and NRP2 in VEGF-A-stimulated cultured human umbilical vein endothelial cellsEsmeralda K. Bosma, Shahan Darwesh, Jia Y. Zheng, Cornelis J. F. van Noorden, Reinier O. Schlingemann, Ingeborg Klaassen, 2022, original scientific article Abstract: Endothelial cells (ECs) form a precisely regulated polarized monolayer in capillary walls. Vascular endothelial growth factor-A (VEGF-A) induces endothelial hyperpermeability, and VEGF-A applied to the basolateral side, but not the apical side, has been shown to be a strong barrier disruptor in blood–retinal barrier ECs. We show here that VEGF-A presented to the basolateral side of human umbilical vein ECs (HUVECs) induces higher permeability than apical stimulation, which is similar to results obtained with bovine retinal ECs. We investigated with immunocytochemistry and confocal imaging the distribution of VEGF receptor-2 (VEGFR2) and neuropilin-2 (NRP2) in perinuclear apical and basolateral membrane domains. Orthogonal z-sections of cultured HUVECs were obtained, and the fluorescence intensity at the apical and basolateral membrane compartments was measured. We found that VEGFR2 and NRP2 are evenly distributed throughout perinuclear apical and basolateral membrane compartments in unstimulated HUVECs grown on Transwell inserts, whereas basolateral VEGF-A stimulation induces a shift toward basolateral VEGFR2 and NRP2 localization. When HUVECs were grown on coverslips, the distribution of VEGFR2 and NRP2 across the perinuclear apical and basolateral membrane domains was different. Our findings demonstrate that HUVECs dynamically regulate VEGFR2 and NRP2 localization on membrane microdomains, depending on growth conditions and the polarity of VEGF-A stimulation.
Keywords: endotelijske celice, EGF, celična biologija
Published in DiRROS: 17.07.2024; Views: 119; Downloads: 111
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6. Fitoplankton, model kompleksnostiIvano Vascotto, Patricija Mozetič, Janja Francé, 2024, professional article Keywords: fitoplankton, biološka raznovrstnost, združbe, periodičnost, okoljski dejavniki, Tržaški zaliv, morska biologija
Published in DiRROS: 09.07.2024; Views: 124; Downloads: 87
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7. Kartiranje habitatnih tipov in popis morske biodiverzitete na območju koprske občine : končno poročiloLovrenc Lipej, Ana Fortič, Leon Lojze Zamuda, Tihomir Makovec, Borut Mavrič, Valentina Pitacco, Milijan Šiško, Domen Trkov, Martina Orlando-Bonaca, Danijel Ivajnšič, 2022, final research report Keywords: morska biologija, biološke lastnosti, skupine vrst, habitatni tipi, morski ekosistemi, morska biodiverziteta, morska biološka raznovrstnost, Občina Koper, poročila
Published in DiRROS: 24.04.2024; Views: 305; Downloads: 0 |
8. Ohranjanje biotske raznovrstnosti : študijska gradiva pri predmetu Ohranjanje biotske raznovrstnosti (5 vsebinskih sklopov)Lado Kutnar, 2024, other educational material Keywords: biotska raznovrstnost, ohranitvena biologija, izumiranje vrst, ravni biotske raznovrstnosti, genetska pestrost, vrstna pestrost, ekosistemska in krajinska pestrost, dejavniki ogrožanja, onesnaženje okolja, invazivne tujerodne vrste, podnebne spremembe, degradacija habitatov, fragmentacija habitatov, mehanizmi ohranjanja biotske raznovrstnosti, rdeči seznam vrst, zavarovane vrste, Natura 2000, Slovenija
Published in DiRROS: 03.04.2024; Views: 332; Downloads: 0 |
9. Organoidi glioblastoma razkrivajo odpornost na standardno terapijoBernarda Majc, Anamarija Habič, Marta Malavolta, Aleksander Sadikov, Andrej Porčnik, Jernej Mlakar, Tamara Lah Turnšek, Barbara Breznik, Metka Novak, 2023, published scientific conference contribution abstract Keywords: glioblastom, organoidi, standardna terapija, model ex vivo, biologija raka
Published in DiRROS: 16.06.2023; Views: 555; Downloads: 217
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10. Možganski tumorji : standardi in perspektive2022, proceedings of professional or unreviewed scientific conference contributions Abstract: V prvem sklopu z naslovom Osnovne preiskave v nevroonkologiji smo predstavili novo klasifikacijo tumorjev osrednjega živčevja, nato smo se osredotočili na molekularno genetsko diagnostiko. Nadaljevali smo z nevroradiološkimi preiskavami s poudarkom na magnetno rezonančnih značilnostih možganskih tumorjev ter sklop zaključili s pregledom nuklearnoštevilnih medicinskih preiskav v nevroonkologiji.
V drugem sklopu smo se osredotočili na zdravljenje in spremljanje bolnikov z možganskimi tumorji. Možganski tumorji so zelo heterogene bolezni, zato so bile predstavljene različne možnosti terapije z vidika nevrokirurga, internističnega onkologa, radioterapevta in pediatra. Vlogo v zdravljenju možganskih tumorjev in različne pristope do lobanjske baze nam je predstavil specialist otorinolaringolog. Seznanjeni smo bili s sodobnimi, najnovejšimi tehnikami obsevanja številnih možganskih metastaz kot tudi benignih možganskih tumorjev. Poudarjeni so bili tudi zapleti zdravljenja in pozne posledice onkološkega zdravljenja. Klinična psihologinja je razložila vpliv onkološkega zdravljenja na nevrokognitivno funkcijo. Pomembnost multidisciplinarnega sodelovanja je bila nagovorjena s predavanjem nevrologa.
Keywords: nevroonkologija, centralni živčni sistem, klasifikacija, kirurško zdravljenje, sistemsko zdravljenje, molekularna biologija, endoskopska kirurgija, radiokirurgija, radioterapija, sledenje pacientov, kognitivne funkcije, zborniki, elektronske knjige
Published in DiRROS: 15.12.2022; Views: 863; Downloads: 433
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