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Spatial distribution and multiannual trends of potentially toxic microalgae in shellfish farms along the Sardinian coast (NW Mediterranean Sea)

Bazzoni, Anna Maria and Caddeo, Tiziana and Pulina, Silvia and Padedda, Bachisio Mario and Satta, Cecilia Teodora and Sechi, Nicola and Lugliè, Antonella Gesuina Laura (2015) Spatial distribution and multiannual trends of potentially toxic microalgae in shellfish farms along the Sardinian coast (NW Mediterranean Sea). Environmental Monitoring and Assessment, Vol. 187 (86), [18] p. ISSN 0167-6369. Article.

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DOI: 10.1007/s10661-014-4250-3

Abstract

In this study, the geographical distribution and multiannual trends of potentially toxic harmful algal species (HAS) were analysed at 18 mussel farms in Sardinia (Italy, North-Western Mediterranean Sea) using data derived from the Sardinian Regional Monitoring Programme (1988–2012). The results showed an increasing number of potentially toxic microalgae over the study period. Alexandrium catenella and Alexandrium minutum were the most harmful species detected. From 2002 to 2009, these species caused eight paralytic shellfish poisoning-positive events which temporarily stopped commercial trade of mussels. The statistical analysis indicated that some taxa exhibited temporal increasing trends in their abundance (e.g. Pseudo-nitzschia spp.), significant decrements (e.g. Dinophysis sp.), or both increasing and decreasing significant trends (e.g. A. minutum) at different sites, indicating the necessity of further in-depth studies, especially on certain taxa. Overall, the statistical elaboration of the long-term data provided useful signals for early detection of shellfish contamination by different potentially toxic HAS in defined sites. These signals can be used to develop best management practices.

Item Type:Article
ID Code:11276
Status:Published
Refereed:Yes
Uncontrolled Keywords:Harmful algal species, shellfish farms, phytoplankton, multiannual trends, Sardinia
Subjects:Area 05 - Scienze biologiche > BIO/07 Ecologia
Divisions:001 Università di Sassari > 01-a Nuovi Dipartimenti dal 2012 > Scienze della Natura e del Territorio
Publisher:Springer
ISSN:0167-6369
Deposited On:26 Apr 2016 11:37

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