Fate of two invasive or potentially invasive alien seaweeds in a central Mediterranean transitional water system: failure and success

Cecere, Ester; Alabiso, Giorgio; Carlucci, Roberto; Petrocelli, Antonella; Verlaque, Marc

doi:10.1515/bot-2016-0053

Cited by 15 publications

(20 citation statements)

References 60 publications

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“…stellate propagules, thickened unattached fragments, basal parts) which also serve as over-wintering organs. In late autumn-early winter, the thalli decay but those organs survive the adverse season (Cecere et al 2004(Cecere et al , 2016a. The natural cavities in the rock at Station 3 probably represent a shelter supporting the survival of a higher number of propagules.…”

Section: Discussionmentioning

confidence: 99%

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Successions of phytobenthos species in a Mediterranean transitional water system: the importance of long term observations

Petrocelli¹,

Cecere²,

Rubino³

2019

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The availability of quantitative long term datasets on the phytobenthic assemblages of the Mar Piccolo of Taranto (southern Italy, Mediterranean Sea), a lagoon like semi-enclosed coastal basin included in the Italian LTER network, enabled careful analysis of changes occurring in the structure of the community over about thirty years. The total number of taxa differed over the years. Thirteen non-indigenous species in total were found, their number varied over the years, reaching its highest value in 2017. The dominant taxa differed over the years. The number of species in each taxonomic division also varied. In addition to the centuries-old exploitation of its biotic resources, mainly molluscs, the basin has been subject for a long time to a range of anthropogenic driving forces linked to urbanisation, shipbuilding, agriculture and military activities, which have caused chemical and biological pollution, eutrophication and habitat destruction. It may therefore be assumed that these changes were closely related to human activities. Indeed, it was observed that the reduction of only one of these forces, i.e. urban sewage discharge, triggered the recovery of phytobenthos. Therefore, it may be assumed that if the anthropogenic pressure on the Mar Piccolo was eased, it could once again become the paradisiacal place it was held to be in ancient times.

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Section: Discussionmentioning

confidence: 99%

“…1). The mean annual seawater surface temperature ranges from 7.5 °C to 32.3 °C and seawater surface salinity from 33.0 to 37.7 ‰ (Cecere et al 2016a). Those values are strongly affected by inputs of freshwater from submarine springs and a few small rivers ).…”

Section: Study Sitementioning

confidence: 99%

Successions of phytobenthos species in a Mediterranean transitional water system: the importance of long term observations

Petrocelli¹,

Cecere²,

Rubino³

2019

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“…The physical-chemical features of the Mar Piccolo seawater are strongly influenced by 34 submarine freshwater springs, locally named "citri", and a few small rivers flowing into the basin [22]. Temperature ranges between 7.5 • C and 32.3 • C. Salinity ranges between 33.0 and 37.7 [23]. In the Mar Piccolo, seasonal sampling campaigns have been carried out since spring 2011, within the framework of LTER activities.…”

Section: Methodsmentioning

confidence: 99%

Settlement and Spreading of the Introduced Seaweed Caulacanthus okamurae (Rhodophyta) in the Mediterranean Sea

et al. 2020

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In this study, we report the first finding of the non-indigenous seaweed Caulacanthus okamurae (Rhodophyta) in the Ionian and Adriatic Seas (Mediterranean). Specimens were identified through molecular analyses based on the plastid ribulose-1,5-bisphosphate carboxylase/oxygenase (rbcL) marker. The sequences obtained during this study represent the first molecular evidence of the presence of this taxon in the Mediterranean Sea. Stable populations have been detected in some areas of the Mar Piccolo of Taranto (Italy) and in the whole lagoon of Venice, forming dense patches of low turf that reach high biomasses. Turf-forming algae are common in the intertidal zones of tropical regions, but are rare in temperate ones. The particular environmental conditions of transitional water systems, such as the Mar Piccolo of Taranto and the Venice Lagoon, together with the water temperature increase observed in the last years could have favored the settlement and spread of this introduced species.

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“…Seven NIS are casual; they include Ascophyllum nodosum, Batophora sp., Palisada maris-rubri, Plocamium secundatum, Polysiphonia paniculata, Solieria filiformis, and Undaria pinnatifida. The latter was recorded in the Mar Piccolo of Taranto from 1998 to 2009, but since 2010 has never been found again (Cecere et al, 2000;Cecere et al, 2016a).…”

Section: Macrophytamentioning

confidence: 97%

Marine alien species in Italy: A contribution to the implementation of descriptor D2 of the marine strategy framework directive

Servello¹,

Andaloro

Azzurro

et al. 2019

Medit. Mar. Sci.

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The re-examination of marine alien species or Non-indigenous species (NIS) reported in Italian Seas by December 2018, is here provided, particularly focusing on establishment success, year of first record, origin, potential invasiveness, and likely pathways. Furthermore, their distribution is assessed according to marine subregions outlined by the European Union (EU) Marine Strategy Framework Directive: Adriatic Sea (ADRIA), Ionian Sea and Central Mediterranean Sea (CMED), and Western Mediterranean Sea (WMED). In Italy, 265 NIS have been detected with the highest number of species being recorded in the CMED (154 species) and the WMED (151 species), followed by the ADRIA (143). Most of these species were recorded in more than one subregion. The NIS that have established stable populations in Italian Seas are 180 (68%), among which 26 have exhibited invasive traits.Among taxa involved, Macrophyta rank first with 65 taxa. Fifty-five of them are established in at least one subregion, mostly in the ADRIA and the CMED. Crustacea rank second with 48 taxa, followed by Polychaeta with 43 taxa, Mollusca with 29 taxa, and Pisces with 28 taxa, which were mainly reported from the CMED. In the period 2012-2017, 44 new alien species were recorded, resulting in approximately one new entry every two months. Approximately half of the NIS (~52%) recorded in Italy have most likely arrived through the transport-stowaway pathway related to shipping traffic (~28% as biofoulers, ~22% in ballast waters, and ~2% as hitchhikers). The second most common pathway is the unaided movement with currents (~19%), followed by the transport-contaminant on farmed shellfishes pathway (~18%). Unaided is the most common pathway for alien Fisshes, especially in CMED. Escapes from confinement account for ~3% and release in nature for ~2% of the NIS. The present NIS distribution hotspots for new introductions were defined on the first recipient area/location in Italy. In ADRIA the hotspot is Venice which accounts for the highest number of alien taxa introduced in Italy, with 50 newly recorded taxa. In the CMED, hotspots of introduction are the Taranto and Catania Gulfs, hosting 21 first records each. The Strait of Sicily represents a crossroad between the alien taxa from the Atlantic Ocean and the Indo-Pacific area. In the WMED, hotspots of bioinvasions include the Gulfs of Naples, Genoa and Livorno.This review can serve as an updated baseline for future coordination and harmonization of monitoring initiatives under international, EU and regional policies, for the compilation of new data from established monitoring programs, and for rapid assessment surveys.

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Fate of two invasive or potentially invasive alien seaweeds in a central Mediterranean transitional water system: failure and success

Cited by 15 publications

References 60 publications

Successions of phytobenthos species in a Mediterranean transitional water system: the importance of long term observations

Successions of phytobenthos species in a Mediterranean transitional water system: the importance of long term observations

Settlement and Spreading of the Introduced Seaweed Caulacanthus okamurae (Rhodophyta) in the Mediterranean Sea

Marine alien species in Italy: A contribution to the implementation of descriptor D2 of the marine strategy framework directive

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