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Climate regime shifts and multi-decadal variability of the Adriatic Sea pelagic ecosystem

Branka GRBEC ; Institut za oceanografiju i ribarstvo, Šetalište I. Meštrovića 63, 21000 Split, Hrvatska
Mira MOROVIĆ orcid id orcid.org/0000-0002-1716-4808 ; Institut za oceanografiju i ribarstvo, Šetalište I. Meštrovića 63, 21000 Split, Hrvatska
Frano MATIĆ ; Institut za oceanografiju i ribarstvo, Šetalište I. Meštrovića 63, 21000 Split, Hrvatska
Živana NINČEVIĆ GLADAN ; Institut za oceanografiju i ribarstvo, Šetalište I. Meštrovića 63, 21000 Split, Hrvatska
Ivona MARASOVIĆ ; Institut za oceanografiju i ribarstvo, Šetalište I. Meštrovića 63, 21000 Split, Hrvatska
Olja VIDJAK ; Institut za oceanografiju i ribarstvo, Šetalište I. Meštrovića 63, 21000 Split, Hrvatska
Natalia BOJANIĆ ; Institut za oceanografiju i ribarstvo, Šetalište I. Meštrovića 63, 21000 Split, Hrvatska
Vanja ČIKEŠ KEČ ; Institut za oceanografiju i ribarstvo, Šetalište I. Meštrovića 63, 21000 Split, Hrvatska
Grozdan KUŠPILIĆ ; Institut za oceanografiju i ribarstvo, Šetalište I. Meštrovića 63, 21000 Split, Hrvatska
Sanja MATIĆ-SKOKO ; Institut za oceanografiju i ribarstvo, Šetalište I. Meštrovića 63, 21000 Split, Hrvatska


Puni tekst: engleski pdf 699 Kb

str. 47-66

preuzimanja: 532

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Sažetak

In recent highly variable climate, a combined effect of a large-scale northern hemisphere climate and regional-scale Adriatic hydroclimate changes significantly reflected in the Adriatic Sea ecosystem. To clarify this statement we set up in connection two inter-annual systems: the air-sea interconnected system and pelagic ecosystems for the period 1961 to 2010. Within this period, significant changes occurred through 1987-1998 period, characterized by a drop of temperature, salinity and oxygen concentration in the middle Adriatic intermediate layer as consequence of a weaker ventilation of the Adriatic Sea. The pelagic ecosystem reacted to these changes. Large fluctuations in marine biota (from plankton to pelagic fish) revealed significantly different regimes before and after the late eighties. Different patterns observed through analyzed biotic parameters seem linked to modification in thermohaline circulation related to the Eastern Mediterranean Transient (EMT), whose effects prevented warmer and saltier water mass intrusions into the Adriatic Sea. These results provide evidence on connections between the shifts in the middle Adriatic pelagic ecosystem and the northern hemisphere climate via changes in regional atmospheric conditions, and highlight the importance of northern hemisphere climate changes for physical and biological regimes of the Adriatic Sea.

Ključne riječi

Mid-latitude teleconnections; Adriatic climate; regime shift; plankton; pelagic fish

Hrčak ID:

148127

URI

https://hrcak.srce.hr/148127

Datum izdavanja:

1.7.2015.

Podaci na drugim jezicima: hrvatski

Posjeta: 1.533 *