Nova deep sea invasion chronology of an invasion pbs. In third international workshop on caulerpa taxifolia, marseille, 1920 september 1997 eds boudouresque cf, gravez v, meinesz a, palluy f, pp. Caulerpa taxifolia is a species of seaweed, an alga of the genus caulerpa native to the pacific ocean and caribbean sea. Eradication of destructive, invasive, nonnative seaweed announced in mid2000, infestations of caulerpa taxifolia, an extremely destructive and invasive nonnative seaweed, were found in two locations in southern california.
Researchers criticize response to killer algae nature. Caulerpa taxifolia is an invasive marine alga that is widely used as a decorative plant in aquaria. Caulerpa species are known to contain psychoactive substances such as caulerpin, caulerpicin and caulerpenyne. Caulerpa taxifolia, on the biodiversity of the mediterranean marine biota. Apart from a few serious attempts to eradicate this species mainly in aus and usa, monitoring, mapping and. In contrast to other algae, it does not wither, it grows with. Biologist alexandre meinesz explores varying degrees of ecological menace posed by alien invaders. Pdf the introduced green alga caulerpa taxifolia continues. Caulerpa taxifolia ufifas center for aquatic and invasive. Comparison of the woundactivated transformation of. Concerns are being raised about initial efforts to deal with the first outbreak on the american pacific coast of an ecologically damaging marine alga which has already reeked havoc in the. At the end of 2000, approximately 1km2 of benthos had been colonized in 103 independent areas along 191km of coastline in six countries spain, france, monaco, italy, croatia and tunisia. The papers presented at the conference are included as well as the detailed results of the group discussions and breakout sessions. The impact of caulerpa taxifolia on the structure of shallow posidonia oceanica beds was studied in permanent quadrats from 1995 to 2005 at the invaded site of cap martin and the control site of cap dantibes french riviera, france.
Alexandre meinesz a, valerie menager b and sandrine ruitton b a cnrs. Caulerpa taxifolia is a green algae used widely as an ornamental plant in saltwater aquaria fig. Alterations of the structure of posidonia oceanica beds due to the introduced alga caulerpa taxifolia the impact of caulerpa taxifolia on the structure of shallow posidonia oceanica beds was studied in permanent quadrats from 1995 to 2005 at the invaded site of cap martin and the control site of cap dantibes french riviera, france. After 18 years of invasion, the situation with caulerpa taxifolia in the mediterranean is out of control.
This site uses cookies to analyze traffic and for ads measurement purposes. Pdf biomass seasonality of caulerpa taxifolia in the. Sea slug disperses the invasive caulerpa taxifolia journal. Standardization proposal for the mapping of caulerpa. Eradication of destructive, invasive, nonnative seaweed announced hotos. Thierry thibaut, alexandre meinesz, patrick coquillard. For despite meinesz s pleas to scientists and the french government, no agency was willing to take responsibility for the seaweed, and while the buck was passed, the killer algae grew. Biomass seasonality of caulerpa taxifolia in the mediterranean sea. Presentation of alexandre meinesz from the university of nice, france entitled. At the end of 2000, approximately 1km2 of benthos had been colonized in 103. In the early 1980s, the curator of the tropical aquarium at stuttgart, germany, noticed the exceptional properties of a beautiful green alga, caulerpa taxifolia, used as decoration in the presentation of multicolored tropical fishes. Mediterranean clone of caulerpa, caulerpa taxifolia.
Standardization proposal for the mapping of caulerpa taxifolia. Nova deep sea invasion the impact of invasive species. It is hoped that this will provide an understanding of the biology of the invasive. Sea slug disperses the invasive caulerpa taxifolia volume 81 issue 2 ante z. Agardh has a native circumtropical distribution and formed invasive populations in numerous areas outside its native range, particularly in the mediterranean sea meinesz et al. A coldtolerant strain was inadvertently introduced into the mediterranean sea in wastewater from the oceanographic museum at monaco, where it has now spread over more than,000 hectares of seabed. The invasive green alga, caulerpa taxifolia, that has spread rapidly after its. Caulerpa taxifolia an overview sciencedirect topics. Killer algae is the biological and political horror story of this invasion. Standardization proposal for the mapping of caulerpa taxifolia expansion in the mediterranean sea. Pdf spreading of the introduced tropical alga caulerpa taxifolia in. The southern california caulerpa action team sccat, which was convened shortly after the first. Caulerpa taxifolia this green alga was first discovered as an invader in 1984 beneath a public aquarium in monaco where it was cultivated.
It was in the late 1980s that alexandre meinesz, a professor of biology at frances university of nicesophia antipolis on the mediterranean coast, first detected the spread of a new species of. An aquariumbred clone of the green seaweed, caulerpa taxifolia, has invaded the mediterranean coasts of france and italy and now covers thousands of acres of the coastal zone. Skip to main content accessibility help we use cookies to distinguish you from other users and to provide you with a better experience on our websites. The introduced green alga caulerpa taxifolia continues to spread in the mediterranean alexandre meinesz1. Caulerpa taxifolia department of primary industries. Giant salvinia salvinia auriculata complex anchored waterhyacinth eichhornia azurea hydrilla hydrilla verticillata indian. Foliage fronds are fernlike, bright green, pinnate, and from 226 in. And through it all, the oceanographic museum in monaco sought to exculpate itself. The tropical green alga caulerpa taxifolia in the mediterranean has spread steadily since its introduction in 1984.
A gardh caulerpales, which, after its recent accidental introduction, is growing in the region of cap martin much more vigorously than in the tropics, is shown to contain the known sesquiterpenic toxins caulerpenyne 1 in larger amounts than in tropical caulerpales and oxytoxin 1 2. This pdf contains the proceedings of the international. Pdf standardization proposal for the mapping of caulerpa. Pdf the tropical green alga caulerpa taxifolia in the mediterranean has spread steadily since its introduction in 1984. By 2000, it had spread to six countries and covered over km 2 of the seafloor meinesz et al. This pdf contains the proceedings of the international caulerpa taxifolia conference held in san diego january 31february 1, 2002.
At the end of 2000, approximately 1 km 2 of benthos had been colonized in 103 independent areas along 191 km of coastline in six countries spain, france, monaco, italy, croatia and tunisia. Temperature and light responses of alga caulerpa taxifolia. Sea slug disperses the invasive caulerpa taxifolia. It had never been observed previously in the mediterranean sea meinesz and hesse 1991. Nov 01, 2011 gamze turan, hatice tekogul, sukran cirik, and alexandre meinesz first record of the invasive green seaweed caulerpa taxifolia bryopsidales on the coast of turkey, cryptogamie, algologie 324, 379382, 1 november 2011. Caulerpa taxifolia in the mediterranean, ecological and socio economic impacts, the historical perspective and.
The impact of caulerpa taxifolia on the structure of shallow posidonia. Its status as an introduced species and mode of introduction seemed obvious at the time, but. Paracentrotus lividus in presence of the green alga caulerpa taxifolia varies. Caulerpa taxifolia species, which can be strongly hallucinogenic. Agardh development in the northwestern mediterranean sea, ecological modelling on deepdyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. California joins global assault on killer seaweed europeans provide ideas for destroying resilient, toxic algae prized by aquarium owners as an ornamental plant. Caulerpa taxifolia is toxic to herbivores such as sea urchins and fish.
Pdf the introduced green alga caulerpa taxifolia continues to. It is widely used ornamentally in aquariums, because it is considered attractive and neat in arrangement, and is easy to establish and care for. The introduced alga caulerpa taxifolia in south australia. Eradication of destructive, invasive, nonnative seaweed. Caulerpa taxifolia caulerpa is a fast growing marine alga native to tropical australia and the south pacific that has colonised various areas outside its natural range, including several nsw waterways. Pdf alterations of the structure of posidonia oceanica beds due to. If you continue to use this site we will assume that you are happy with it. Caulerpa taxifolia is an invasive marine alga that is often referred to as killer algae. Caulerpa taxifolia, the killer alga, is a dominant. The last hope remaining is in the use of biological. Control of the expansion of caulerpa taxifolia in the mediterranean scientific papers and documents dealing with the alga caulerpa taxifolia introduced to the mediterranean thirteenth edition by charlesfrancois boudouresque laurence ledireach marie monin alexandre meinesz november, 2002 g i s p o s i d o n i e. Cuttings of mediterranean caulerpa taxifolia were cultured under controlled.
In this article by alexandre meinesz, the french marine biologist who discovered the threat posed by the alga caulerpa taxifolia, explore the varying degrees of menace posed by many different. First record of the invasive green seaweed caulerpa taxifolia. Elysia subornata mollusca a potential control agent of the. Bred for its beauty, fast growth, and tolerance for cold, the aquarium strain of caulerpa taxifolia. As ecologists and exotic species research scientists, we recommend that steps be taken immediately to keep this invasive seaweed out of united states waters. Alterations of the structure of posidonia oceanica beds due. Journal of the marine biological association of the united kingdom 76. The introduced green alga caulerpa taxifolia continues to.
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