Naslov
The northward movement of termophilic fish species in the Adriatic Sea

Autori
Matić-Skoko, Sanja ; Dulčić, Jakov

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Proceedings of the 42nd European Marine Biology Symposium / Rumohr, Heye ; Sommer, Ulrich ; Wahl, Martin - Kiehl : IFM-GEOMAR, 2007, 240-240

Skup
42nd European Marine Biology Symposium

Mjesto i datum
Kiel, Njemačka, 27.08.2007. - 31.08.2007

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
termophilic species; fish; Adriatic Sea

Sažetak
The hypotesis of an expansive northward movement of termophilic species and changes in marine biodiversity is nowdays supported with numerous records of fish species previously characteristic to the more southern areas. Obviously, this is also happening in the Adriatic Sea as well where intensive changes in the quantitative and qualitative composition of the Adriatic ichthyofauna have been noted. The variations in Adriatic temperature conditions correlate well with the North Atlantic Index (NAO) variations showing that local temparature changes at least partly result from hemispheric one pointing those recent changes of Adriatic biodiversity are partly contriolled by hemispheric climate changes. Moreover, the climate changes provoke oceanographic changes due to greater intensity of water exchange between the Adriatic and the eastern Mediterranean, in term of greater input of wormer and more haline mediterranean water into the Adriatic. In last three decades more than 30, mostly thermophilic, fish species are recognized as new for Adriatic Sea. Also, several thermophilic species, previously scarce or rare, have become more abundant in last 10 years (1996-2006). Moreover, for 5 of them, Ruvettus pretiosus, Plectorhinchus mediterraneus, Sphoeroides pachygaster, Campogramma glaycos, Thalassoma pavo and Pomatomus saltatrix, which were at the beginning found only in southern Adriatic, we are now in position to observe that they passing very well throw adaptation process by establishing large populations at the nothernomost part of Adriatic Sea. Also, some examples of the disappearance or increasing scarcity of some fish species are noticed (Engraulis encrasicolus, Scomber scombrus). These changes will provoke biological and ecological responses threw impacts on food webs and ecosystems. The nature of these responses, acclimatization and adaptation with changing environmental circumstances will be also discussed.

Izvorni jezik
Engleski

Znanstvena područja
Biologija

POVEZANOST RADA