title: Spreading patterns of the invasive Caulerpa cylindracea Sonder along the west Istrian Coast (northern Adriatic Sea, Croatia).
abstract: The northern Adriatic Sea represents the northernmost and thus the coldest biogeographic sector of the Mediterranean Sea. In 2004, the invasive green alga Caulerpa cylindracea was recorded for the first time in the northern Adriatic at a site of the west Istrian Coast. Until 2010, additional C. cylindracea mats have only formed up to 7 km northward from the first colonisation site. Subsequently, the alga was also recorded at sites widespread along the entire coast. Both the first 2004 colonisation event and the 2011-2014 colonisation of distant sites occurred during periods of winter seawater temperatures higher than 9 °C. In general, algal spreading was markedly slow. Approximately 10 years after the first record, C. cylindracea has affected less than 1% of the entire west Istrian coastline. The colonisation predominantly occurred in ports and urbanised bays (seaside resorts) suggesting that anthropogenic activities might enhance algal diffusion.
authors.affiliation: Ruđer Bošković Institute, Center for Marine Research, G. Paliaga 5, 52210 Rovinj, Croatia. Electronic address: ivesa@cim.irb.hr.
authors.forename: Ljiljana
authors.initials: L
authors.lastname: Iveša
authors.affiliation: Ruđer Bošković Institute, Center for Marine Research, G. Paliaga 5, 52210 Rovinj, Croatia.
authors.forename: Tamara
authors.initials: T
authors.lastname: Djakovac
authors.affiliation: Ruđer Bošković Institute, Center for Marine Research, G. Paliaga 5, 52210 Rovinj, Croatia.
authors.forename: Massimo
authors.initials: M
authors.lastname: Devescovi
mesh_terms: D046068:Caulerpa / Q000502:physiology*; D017523:Croatia; D017753:Ecosystem; D004784:Environmental Monitoring; D058865:Introduced Species; D009792:Oceans and Seas; D054712:Salinity; D012623:Seawater / Q000737:chemistry; D013696:Temperature; D014872:Water Movements
keywords: Anthropogenic pressure; Caulerpa cylindracea; Climate change; Invasive species; Northern Adriatic Sea; Subtidal