20.500.12556/DiRROS-21770 A short-term investigation of diel vertical migrations of the calycophoran Siphonophora in the open south Adriatic Sea (July 2003) Morning, midday, evening and night repetitive sampling was used to demonstrate calycophoran diel vertical migration (DVM) at a fixed station in the oligotrophic southern Adriatic Sea at 8 depth intervals. Of 20 calycophoran species collected, most of them inhabited layers of specific temperature and light intensity, and migrated during the night. The deep species Kephyes ovata is primarily non-migratory. Typical nocturnal movements to the surface were recorded for Lensia conoidea and sphaeronectes koellikeri. Lensia subtilis and eudoxoides spiralis migrated toward the surface in the evening but sank deeper at night. Lensia meteori and Lensia fowleri reached upper layers at midday. The DVM of sphaeronectes irregularis was irregular and independent of diel light patterns. Though low in numbers, some calycophorans were found above the thermocline at night. For mesopelagic species, however, higher summer surface temperatures proved an effective barrier to migration above 100 m. Thus, certain species could be represented as key species of planktonic cnidarian assemblages found within a certain depth range. Though not homogenous, and while some undertake nocturnal migrations in both directions, all are interrelated by preferences of bathymetric distribution and specific DVM behavior. sea medusae biological research abundance bathimetric distribution siphonophora calycophoran siphonophores composition Adriatic Sea morje meduze sifonofore prehranjevanje hidrodinamika prehrambene vloge obalno morje Jadransko morje true false true Angleški jezik Slovenski jezik Neznano 2025-03-26 10:59:25 2025-03-26 10:59:26 2025-10-24 03:49:46 0000-00-00 00:00:00 2011 0 0 Izv. znanstv. članek - izšel posthumno po smrti Adam Benović-a; str. 159-171 Št. 2 Vol. 52 2011 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2011-12-15 574:628.427 0001-5113 2486351 RAZ_Lucic_Davor_2011.pdf RAZ_Lucic_Davor_2011.pdf 1 0C2AEA63EBDC875F14AAFF7EAFA177B8 397e6c43ee82e71151222ac07bbfc549cd436e5339a8fca09fe15b447223cbe6 25068226-0a29-11f0-963a-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=31370 https://acta.izor.hr/ojs/index.php/acta/article/view/271 0 2c56847d-0a29-11f0-963a-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=31371 https://acta.izor.hr/acta/pdf/52_2_pdf/52_2_1.pdf 0 315bb326-0a29-11f0-963a-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=31372 Nacionalni inštitut za biologijo 0 0 0