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Assessment of harmful algal species using different approaches: the case study of the Sardinian coasts

Satta, Cecilia Teodora and Padedda, Bachisio Mario and Stacca, Daniela and Simeone, Simone and De Falco, Giovanni and Penna, Antonella and Capellacci, S. and Pulina, Silvia and Perilli, Angelo and Sechi, Nicola and Lugliè, Antonella Gesuina Laura (2014) Assessment of harmful algal species using different approaches: the case study of the Sardinian coasts. Advances in oceanography and limnology, Vol. 5 (1), p. 60-78. ISSN 1947-5721. eISSN 1947-573X. Article.

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DOI: 10.1080/19475721.2014.900522

Abstract

The presence and distribution of harmful algal species were investigated along the coasts of Sardinia in the summer of 2012. Fourteen potentially noxious taxa were identified at 74 beaches. The majority of the recovered taxa were potentially toxic and/or high biomass producers. Alexandrium taylorii, Gymnodinium instriatum, and Ostreopsis cf. ovata were the most frequent and abundant taxa, although Barrufeta bravensis reached the highest density (4.4 × 106 cells L−1). Barrufeta bravensis, A. taylorii, and G. instriatum were responsible for intense water discoloration at two of the beaches sampled. Polymerase chain reaction (PCR) analyses supported the identification of several taxa and decisively identified B. bravensis. PCR assays increased the information available on the species distributions. The locations studied were heterogeneous in their prevailing environmental conditions and their morphodynamic profiles. Statistical analyses indicated that the distributions of harmful algal species correlated with gravel and medium-fine sand substrata. These data provide substantial knowledge on the distributions of harmful algal species on beaches, which have been poorly studied on a global scale. The apparent relationship between noxious species and grain size suggests that vegetative cells may be recruited from cyst beds in beach sediments.

Item Type:Article
ID Code:9820
Status:Published
Refereed:Yes
Uncontrolled Keywords:Harmful algal blooms, Mediterranean Sea, beach, tourism, interdisciplinary approach
Subjects:Area 05 - Scienze biologiche > BIO/07 Ecologia
Divisions:001 Università di Sassari > 01-a Nuovi Dipartimenti dal 2012 > Architettura, Design e Urbanistica
001 Università di Sassari > 01-a Nuovi Dipartimenti dal 2012 > Scienze della Natura e del Territorio
002 Altri enti e centri di ricerca del Nord Sardegna > CNR-Consiglio Nazionale delle Ricerche > Istituto per l'ambiente marino costiero, Torregrande (OR)
Publisher:Taylor & Francis
ISSN:1947-5721
eISSN:1947-573X
Deposited On:22 May 2014 10:47

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