Naslov
Aurelia sp. 5 (Schyphozoa)population in the Mljet Lake (the southern Adriatic): trophic interaction and link to the microbial food web

Autori
Malej, Alenka ; Turk, Valentina ; Kogovšek, Tjaša ; Makovec, Tihomir ; Onofri, Vladimir ; Chiaverano, Luciano ; Tinta, Tinkara ; Flander-Putrle, Vesna ; Lučić, Davor

Izvornik
Annales. Series historia naturalis (1408-533X) 19 (2009), 2 Supplement; 49-58

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Aurelia; vertical distribution; C; N; P contents; microbial plankton; Adriatic Sea

Sažetak
Vertical distribution, population structure and chemical composition of a population of the schyphomedusan Aurelia sp. 5 wewre studied in the Mediterranean eurohaline lake on Mljet Island (Veliko jezero, the Southern Adriatic) where dense aggregations have been observed throughout the year. A majority of Aurelia was located in layer below the thermocline with temperature 13-19 0C over the most of the day during summer, whereas in October the population was shallower. The medusae migrated toward the surface at dusk but rarely crossed the thermocline. Elemental analysis of Aurelia revealed low dry specific carbon, nitrogen and phosphorus content ranging from 0.9-1.7%, 0.2-0.5%, amd 0.02-0.06% respectively. In addition to the direct predation impact on micro- and mesozooplankton, a clear positive response of heterotrophic bacteria to the presence of live and dead Aurelia was observed.

Izvorni jezik
Engleski

Znanstvena područja
Geologija, Biologija

POVEZANOST RADA