Petar Kružić

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The invasive green alga Caulerpa racemosa var. cylindracea was observed in the Mediterranean for the first time in 1991 in Libya. Within 20 years it has expanded to almost all regions of the Mediterranean. Like Caulerpa taxifolia, C. racemosa var. cylindracea is crowding out the algal flora, diminishing biodiversity, and also overgrowing corals (Piazzi et(More)
Data on sexual reproduction of scleractinian coral species living in temperate zones, particularly in the Mediterranean Sea, are quite scarce. This paper describes sexual reproduction of the colonial coral Cladocora caespitosa from Veliko jezero (Mljet Island) in the Adriatic Sea. Spawned orange eggs and white sperm bundles were observed on the coral bank(More)
Cladocora caespitosa (Linnaeus, 1767) is a colonial scleractinian coral belonging to the family Faviidae and occurs in the Mediterranean Sea and the IberoMaroccan Gulf. The coral branches build big irregular colonies, up to 1 m in diameter, which fuse into banks and produce reef-like structures (Fig. 1C). Large banks of C. caespitosa, both living and(More)
Anthropogenic activities such as industrial and urban sewage discharges, trawl fishing and coastal works, and introduction of the tropical algae Caulerpa taxifolia (Vahl) C. Agardh and Caulerpa racemosa (Forsskal) J. Agardh have caused a major decline of the colonial coral Cladocora caespitosa (Linnaeus, 1767) in the eastern part of the Adriatic Sea (Kružić(More)
Mass appearances of the toxic dinoflagellate genus Ostreopsis are known to cause dangerous respiratory symptoms in humans exposed to aerosols. The outbreaks can appear in shallow marine waters of temperate regions around the globe. We followed a massive bloom event on a public beach on the northern Adriatic coast near Rovinj, Croatia. We identified the(More)
Recurrent climate-induced mass mortalities of marine animals have been recorded in the Mediterranean Sea over the past 15 years. These mortality outbreaks have been associated with positive thermal anomalies. In this study, we assessed long-term (from 2003 to 2013) responses of the temperate coral Balanophyllia europaea to increasing seawater temperatures(More)
Mapping and monitoring of the seagrass Posidonia oceanica in the eastern (Croatian) part of the Adriatic Sea since 2004 indicates a significant decline in meadow density in an area impacted by inshore capture-based tuna aquaculture. The density and overall condition of P. oceanica meadows impacted by tuna farms near Fulija Islet was compared to two(More)
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