Naslov
Appearance and eradication of Caulerpa taxifolia in Croatia

Autori
Žuljević, Ante ; Antolić, Boris

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
International Caulerpa taxifolia - Conference Proceedings / Williams, Erin ; Grosholz, Edwin - San Diego (CA) : University of California, Davis ; Department of Environmental Science and Policy, 2002, 1-10

Skup
International Caulerpa taxifolia

Mjesto i datum
San Diego (CA), Sjedinjene Američke Države, 31.01.2002. - 01.02.2002

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Caulerpa taxifolia; appearance and eradication; Adriatic Sea; Croatia

Sažetak
By the end of 2001, in the Croatian part of the Adriatic Sea, an invasive species Caulerpa taxifolia (Vahl) C. Agardh had been found in three distant areas: in Stari Grad Bay (Hvar Island) during the summer of 1994, in Malinska (Krk Island) at the end of 1994, and in Barbat Channel (between the Islands of Dolin and Rab) at the end of 1996. It was estimated that the alga was brought into the areas of Stari Grad Bay and Malinska in 1991, and into Barbat Channel in 1995. At the time of first observation in Barbat Channel, this alga covered about 20 m2 of the rocky and sandy bottom in depths ranging from 2.5 to 8 m. The colony was manually extracted after 130 hours of diving. During the summer of 2001, a large new colony of approximately 100 m2 was found 200 m from an area which had been previously eradicated. In the area of Malinska, four large stations on a muddy-sandy bottom between depths of 3 and 12 m were observed until the end of 2001. Eradication was performed during 1996 and 1997. The alga was pumped together with 10 cm of muddy bottom, using a suction water pump. The material was filtrated through a system of sieves. The alga was completely eradicated from the area of the harbor, where it had covered about 1, 300 m2 of 16, 000 m2 of the affected sea bottom. In the other colonies (1, 900 m2 of the total covered surface), recolonization of the algae occurred due to the remains of algae thallus after eradication. Eradication efforts stopped in 1997 because of financial problems. In Stari Grad Bay, until the end of 2001, one central and ten distant stations were infested. The affected area was 39 ha in the central station, and less than 100 m2 in the distant stations. Al-though some of the distant colonies were established five years ago, systematic controls and eradication using suction pumps and covering with black PVC foil, restricted their spread and, in some cases, totally removed them.

Izvorni jezik
Engleski

Znanstvena područja
Biologija

POVEZANOST RADA