Abstract

Phytoplankton and benthic vegetation biomass undergoesspatial-temporal changes in relation to their life cycle,but also to meteorological conditions, physical-chemical variables,organic input and internal dynamism. The main aim ofthis work was to observe the effect of all environmental variableson the vegetative dynamic process in a protected zoneof a Mediterranean costal lagoon (Lesina lagoon, SE Italy).Seven samplings were performed from 2010 to 2012 at 30sites for nutrient and chlorophyll analyses, while TOC measurementsand wet biomass evaluation were performed at 10sites. Temperature, salinity and oxygen saturation were alsomeasured by multiparametric probe and a visual census forvegetation was performed. Sites close to freshwater inflowwere characterized by lower temperature and salinity, and highnitrate, with maxima of 191.05 ?M in May 2010 and morethan 250 ?M in October 2010. Silicates drastically decreasedfrom May 2010 (87.57 ?M) to July 2010 (6.15 ?M) andincreased again in October (74.99 ?M). Chl a concentrationswere not on average higher than 6 mg m-3, but peaks of20 mg m-3 were observed during May 2011 and May 2012.Benthic vegetation wet biomass collected in 2010 was approximatelytwice that collected in 2012, with a maximum of27,554 g m-2 and a dominance of macroalgae (70 % inMay 2010 and 40 % in August 2010). During period2010, a simultaneous and drastic decreasing of bothmean values of wet biomass and chl a was observedfrom May to October 2010. During period 2012 a shiftof vegetation biomass was shown from May (phytoplanktonprevalence) to August 2012, with angiospermprevalence (more than 30 %).

Autore Pugliese

• Specchiulli Antonietta , Cilenti Lucrezia

Tutti gli autori

• Specchiulli A.; Scirocco T.; D'Adamo R.; Cilenti L.; Fabbrocini A.; Cassin D.; Penna P.; Renzi M.; Bastianoni S.

Titolo volume/Rivista

Journal of coastal conservation

Anno di pubblicazione

2016

ISSN

1400-0350

ISBN

Non Disponibile

Numero di citazioni Wos

Nessuna citazione

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Numero di citazioni Scopus

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Ultimo Aggiornamento Citazioni

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Settori ERC

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Codici ASJC

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