Recent changes (2013-2017) in scyphomedusan fauna in the Boka Kotorska Bay, Montenegro (Southeast Adriatic).
In: Acta Adriatica, Jg. 60 (2019-06-01), Heft 1, S. 25-40
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Zugriff:
A semi-quantitative time series (2013-2017) was used to present the recent events of scyphomedusae appearance and abundance in the Boka Kotorska Bay, Montenegro, Southeast Adriatic. Six meroplanktonic species were recorded: Aurelia spp, Chrysaora hysoscella, Cotylorhiza tuberculata Discomedusa lobata, Drymonema dalmatinum and Rhizostoma pulmo. Among them, C. hysoscella and D. lobata dominated in the water column during winter and spring, forming dense aggregations in March and May, and February to May, respectively. Our description of the D. lobata blooms are actually the first known records of blooms for this species. C. tuberculata was observed in the Bay principally in August and September. The bloom was occurred only in 2017, being the first information of C. tuberculata mass appearance in this area. We hypothesized that global warming phenomena could trigger the observed changes, and in this respect, long-term trends of sea surface temperature (SST) fluctuations were analysed. The scyphomedusae blooms coincided with high positive SST anomalies, noted in the last seven years for this area. To better understand the mechanisms underlying changes in their phenology and abundance, detailed studies on benthic stages in the Bay are essential. [ABSTRACT FROM AUTHOR]
Semi kvantitativne serije podataka (2013.-2017.) upotrjebljene su za prikaz novonastalih promjena pojave i brojnosti renjaka u akvatoriju Bokokotorskog zaljeva. Pretpostavljajući da bi globalno zagrijavanje moglo potaknuti promatrane promjene, analizirani su dugoročni trendovi fluktuacija povrinske temperature mora. Zabiljeeno je est meroplanktonskih vrsta: Aurelia spp, Chrysaora hysoscella, Cothyloriza tuberculata Discomedusa lobata, Drymonema dalmatinum i Rhizostoma pulmo. Među njima C. hysoscella, i D. lobata su bile veoma česte i brojne., formirajući nakupine velikih gustoća tijekom zime i proljeća. Za vrstu D. lobata je ujedno prvi poznati opis masovne pojave ove meduze. Vrsta C. tuberculata je u akvatoriju bila primijećena tijekom ljeta, a u velikim gustoćama samo u 2017. godini. To je prvi dokumentirani opis masovne pojave ove meduze u Bokokotorskom zaljevu. Pojave mase renjaka u plankton podudaraju se s visokim odstupanjima povrinske temperature mora zabiljeenih posljednjih sedam godina. Stoga, nai opisi fenologije i brojnosti renjaka u Bokokotorskom zaljevu su u skladu s dokazima porasta gustoće populacija elatinoznog zooplanktona na globalnoj skali. Za bolje razumijevanje mehanizma opisanih promjena neophodno je provesti detaljna istraivanja biologije i ekologije bentonskih stadija ovih organizama. [ABSTRACT FROM AUTHOR]
Titel: |
Recent changes (2013-2017) in scyphomedusan fauna in the Boka Kotorska Bay, Montenegro (Southeast Adriatic).
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Autor/in / Beteiligte Person: | VIOLIĆ, Ivana ; KOGOVEK, Tjaa ; PESTORIĆ, Branka ; MAČIĆ, Vesna ; MILIĆ BERAN, Ivona ; LUČIĆ, Davor |
Zeitschrift: | Acta Adriatica, Jg. 60 (2019-06-01), Heft 1, S. 25-40 |
Veröffentlichung: | 2019 |
Medientyp: | academicJournal |
ISSN: | 0001-5113 (print) |
DOI: | 10.32582/aa.60.1.2 |
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