Macrophyte assemblages were studied in the whole Venice lagoon, including some close fishing ponds, in order to assess the ecological status of this transitional system. During sampling some new or rare species were recorded highlighting the highest ecological status of areas close to tidal expansion and protected from anthropic impacts

Buosi A.

Campolin M.

Sfriso A.

Sfriso A.A.

Archivio istituzionale della ricerca - Università di Ferrara

New macroalgae and rare species in the fishing ponds of the Venice Lagoon and ecological assessment

Archivio Ricerca Ca'Foscari

  
46_Congr SIBM form testi v. 11_feb_2010 
44° Congresso della Società Italiana di Biologia Marina 
Roma, 14-16 maggio 2013 
SCHEDA 
 
AUTORI: 
 
 
TITOLO: 
 
 
Digitare una X nelle caselle di interesse: 
 
 
 RELAZIONE  
 INTERVENTO PROGRAMMATO 
X POSTER:  
NEW MACROALGAE AND RARE SPECIES IN THE FISHING PONDS OF 
THE VENICE LAGOON AND ECOLOGICAL ASSESSMENT 
 
 
 
 Tema: Il ruolo della biologia marina italiana nell'attuazione della direttiva quadro per la 
strategia marina (2008/56/CE) e del protocollo sulla gestione integrata delle 
zone costiere del Mediterraneo 
 
 Comitato Acquacoltura 
X Comitato Benthos 
 Comitato Fascia Costiera 
 Comitato Necton 
 Comitato Plancton 
 Sessione vari 
 
 
Autore referente 
Adriano Sfriso 
sfrisoad@unive.it 
 
Autore che paga la quota di iscrizione al Congresso 
Adriano Sfriso 
sfrisoad@unive.it 
 
Autore che presenta il lavoro al Congresso 
Adriano Sfriso 
sfrisoad@unive.it 
 
  
46_Congr SIBM form testi v. 11_feb_2010 
44° Congresso della Società Italiana di Biologia Marina 
Roma, 14-16 maggio 2013 
A. SFRISO, A. BUOSI, M. CAMPOLIN, A.A. SFRISO. 
  
Department of Environmental Sciences, Informatics & Statistics (DAIS), University Ca' Foscari of  Venice,  
Calle Larga, S. Marta, 2137 – 30123 Venice, Italy. 
sfrisoad@unive.it 
 
NEW MACROALGAE AND RARE SPECIES IN THE FISHING PONDS OF 
THE VENICE LAGOON AND ECOLOGICAL ASSESSMENT 
 
NUOVE MACROALGHE E SPECIE RARE NELLE VALLI DA PESCA DELLA 
LAGUNA VENETA E VALUTAZIONE ECOLOGICA 
 
 
Abstract - Macrophyte assemblages were studied in the whole Venice lagoon, including some close fishing 
ponds,  in order to assess the ecological status of this transitional system. During sampling some new or 
rare species were recorded highlighting the highest ecological status of areas close to tidal expansion and 
protected from anthropic impacts. 
 
Key-words: macroalgae, new species, fishing ponds, Venice lagoon. 
 
Introduction - During 2011 a monitoring plan to determine the macrophyte (aquatic 
angiosperms and macroalgae) present in the bottoms of the Venice lagoon for the 
implementation of the European Water Framework Directive (EWFD: 2000/60/EC) 
was carried out.  The aim was the study of macrophyte assemblages,  the production of 
a taxonomic list  and the assessment of the ecological status of the lagoon by the 
application of the Rapid Macrophytes Quality Index (R-MaQI), recently adopted by the 
Italian law for the ecological classification of its transitional systems (Sfriso, 2010). 
Sampling  was carried out in the soft bottoms of 118 sites spread in the whole lagoon 
including also some fishing ponds (Val Cavallino, Val Dogà, Valle Pierimpiè and 
Valle Zappa) closed to the free tidal expansion and protected by significant 
anthropogenic impacts. 
Materials and methods - Macrophytes have been sampled in May-June and in 
September-November 2011 in accordance with the protocols developed by ISPRA 
(2010). In each monitored station, of ca. 15-20 m in diameter, the cover and the 
abundance of the dominant taxa were determined and samples for the taxonomic 
determinations were collected and preserved in 4% formaldehyde until the stereoscope 
and optical microscope determination.  
Results - On the whole 112 taxa were found in May-June and 119 in September-
November for a total of 138 taxa (56 Chlorophyta, 66 Rhodophyta, 12 Ochrophyta and 
4 aquatic angiosperms). The most frequent species were Ulva laetevirens Areshoug (70 
sts.),  Acrochaete viridis (Reinke) Nielsen, Chondria capillaris (Hudson) M. J. Wynne 
and Gracilaria gracilis (Stackhouse) Steentoft, Irvine et Farnham (66 sts.) and two 
alien species:  Hypnea flexicaulis Y. Yamagishi & M. Masuda  (59 sts.) and  
Agardhiella subulata (C.Agardh) Kraft et Wynne (57 sts.) of recent introduction 
(Sfriso et al., 2009). 
Among them: 2 Rhodophyta, i.e.: Ceramium polyceras (Kützing) Zanardini,  Gayliella 
mazoyerae T.O. Cho, Fredericq et Hommersand and 4 Chlorophyta: Acrochaete inflata 
  
46_Congr SIBM form testi v. 11_feb_2010 
44° Congresso della Società Italiana di Biologia Marina 
Roma, 14-16 maggio 2013 
(Ercegovic) Gallardo et al., Cladophora battersii Hoek, Cladophora socialis  Kützing, 
and Uronema marinum Womersley are new introductions for the Venice lagoon. 
Uronema marinum is a small species coming from the Indo-Pacific region that is a new 
record also for the Mediterranean Sea and the European Atlantic coasts. Other species, 
such as the Rhodophyta: Lophosiphonia obscura (C.Agardh) Falkenberg, are taxa 
which were considered missing from the lagoon (Sfriso et al., 2009).  
Of particular interest was the finding, in the close fishing ponds of the northern basin, 
of some species of high ecological value that had disappeared from  the open lagoon. 
In particular Lamprothamnion papulosum (Wallroth) J. Groves, a Chlorophyta 
belonging to the Characeae, was present and very abundant in Val Cavallino while, it 
was not found elsewhere. This is certainly one of the most sensitive macroalgae that 
colonize the Italian transitional systems and the first species that disappears with the 
minimum anthropogenic disturbance. Another species very common in the fishing 
ponds was Valonia aegagropila C. Agardh, a Chlorophyta that in the past colonized 
great part of the northern lagoon (Palude Maggiore and Valle Ca' Zane), but has 
disappeared since the late '80s (Sfriso et al., 2009).  A rare species that currently is very 
abundant only in these close environments is also the Rhodophyta Polysiphonia 
spinosa (C.Agardh). In addition the aquatic angiosperm Ruppia cirrhosa (Petagna) 
Grande, that is nearly missing in the rest of the lagoon, formed dense and well-
structured meadows. Ruppia was heavily covered from small encrusting calcareous 
macroalgae (Hydrolithon and Pneophyllum) that are common on Cymodocea or 
Zostera but in this species had never been observed before neither in the open Venice 
lagoon nor in other  transitional systems. 
The R-MaQI application highlights the fishing ponds: Val Cavallino  and Val Dogà as 
the water body of the Venice lagoon with the highest ecological status.  With an 
average score of 0.95 out of  1.00, this water body was classified as "High", although it 
is considered a "highly modified environment". 
Conclusions - The last few decades the Venice lagoon has undergone continuous 
anthropogenic impacts with significant morphological changes and biodiversity loss. 
However, it is also reported the recording of many new species or the 
reappearance/conservation of species now believed lost especially by considering areas 
protected by significant anthropic impacts such as some close fishing ponds of the 
northern lagoon where the vegetation still presents pristine conditions. 
References 
ISPRA (2008) - Protocolli per il campionamento e la determinazione degli elementi di qualità 
biologica e fisico-chimica nell’ambito dei programmi di monitoraggio ex 2000/60/CE delle acque di 
transizione. 22 Dicembre, 34 pp. 
SFRISO A. (2010) - Macrophyte Quality Index (MaQI) per la valutazione dello stato ecologico dei 
sistemi di transizione dell’ecoregione-Mediterranea.  In:  Bonometto A., Gennaro  P., Boscolo Brusà 
R. (eds.), Linee Guida per l’applicazione del Macrophyte Quality Index (MaQI). Implementazione 
della Direttiva (2000/60/CE). ISPRA, 34 pp. 
SFRISO  A., CURIEL  D., RISMONDO A. (2009) -  The Venice Lagoon.  In: Cecere E., Petrocelli 
A., Izzo G., Sfriso A. (eds),  Flora and Vegetation of the Italian  Transitional Water Systems. CoRiLa, 
Multigraf, Spinea:17-80. 


New macroalgae and rare species in the fishing ponds of the Venice Lagoon and ecological assessment.

SFRISO, Adriano

BUOSI, ALESSANDRO

SFRISO, ANDREA

Archivio istituzionale della ricerca - Università degli Studi di Venezia Ca' Foscari

  46_Congr SIBM form testi v. 11_feb_2010 44° Congresso della Società Italiana di Biologia Marina Roma, 14-16 maggio 2013 SCHEDA  AUTORI:   TITOLO:   Digitare una X nelle caselle di interesse:    RELAZIONE   INTERVENTO PROGRAMMATO X POSTER:  NEW MACROALGAE AND RARE SPECIES IN THE FISHING PONDS OF THE VENICE LAGOON AND ECOLOGICAL ASSESSMENT     Tema: Il ruolo della biologia marina italiana nell'attuazione della direttiva quadro per la strategia marina (2008/56/CE) e del protocollo sulla gestione integrata delle zone costiere del Mediterraneo   Comitato Acquacoltura X Comitato Benthos  Comitato Fascia Costiera  Comitato Necton  Comitato Plancton  Sessione vari   Autore referente Adriano Sfriso sfrisoad@unive.it  Autore che paga la quota di iscrizione al Congresso Adriano Sfriso sfrisoad@unive.it  Autore che presenta il lavoro al Congresso Adriano Sfriso sfrisoad@unive.it    46_Congr SIBM form testi v. 11_feb_2010 44° Congresso della Società Italiana di Biologia Marina Roma, 14-16 maggio 2013 A. SFRISO, A. BUOSI, M. CAMPOLIN, A.A. SFRISO.   Department of Environmental Sciences, Informatics & Statistics (DAIS), University Ca' Foscari of  Venice,  Calle Larga, S. Marta, 2137 – 30123 Venice, Italy. sfrisoad@unive.it  NEW MACROALGAE AND RARE SPECIES IN THE FISHING PONDS OF THE VENICE LAGOON AND ECOLOGICAL ASSESSMENT  NUOVE MACROALGHE E SPECIE RARE NELLE VALLI DA PESCA DELLA LAGUNA VENETA E VALUTAZIONE ECOLOGICA   Abstract - Macrophyte assemblages were studied in the whole Venice lagoon, including some close fishing ponds,  in order to assess the ecological status of this transitional system. During sampling some new or rare species were recorded highlighting the highest ecological status of areas close to tidal expansion and protected from anthropic impacts.  Key-words: macroalgae, new species, fishing ponds, Venice lagoon.  Introduction - During 2011 a monitoring plan to determine the macrophyte (aquatic angiosperms and macroalgae) present in the bottoms of the Venice lagoon for the implementation of the European Water Framework Directive (EWFD: 2000/60/EC) was carried out.  The aim was the study of macrophyte assemblages,  the production of a taxonomic list  and the assessment of the ecological status of the lagoon by the application of the Rapid Macrophytes Quality Index (R-MaQI), recently adopted by the Italian law for the ecological classification of its transitional systems (Sfriso, 2010). Sampling  was carried out in the soft bottoms of 118 sites spread in the whole lagoon including also some fishing ponds (Val Cavallino, Val Dogà, Valle Pierimpiè and Valle Zappa) closed to the free tidal expansion and protected by significant anthropogenic impacts. Materials and methods - Macrophytes have been sampled in May-June and in September-November 2011 in accordance with the protocols developed by ISPRA (2010). In each monitored station, of ca. 15-20 m in diameter, the cover and the abundance of the dominant taxa were determined and samples for the taxonomic determinations were collected and preserved in 4% formaldehyde until the stereoscope and optical microscope determination.  Results - On the whole 112 taxa were found in May-June and 119 in September-November for a total of 138 taxa (56 Chlorophyta, 66 Rhodophyta, 12 Ochrophyta and 4 aquatic angiosperms). The most frequent species were Ulva laetevirens Areshoug (70 sts.),  Acrochaete viridis (Reinke) Nielsen, Chondria capillaris (Hudson) M. J. Wynne and Gracilaria gracilis (Stackhouse) Steentoft, Irvine et Farnham (66 sts.) and two alien species:  Hypnea flexicaulis Y. Yamagishi & M. Masuda  (59 sts.) and  Agardhiella subulata (C.Agardh) Kraft et Wynne (57 sts.) of recent introduction (Sfriso et al., 2009). Among them: 2 Rhodophyta, i.e.: Ceramium polyceras (Kützing) Zanardini,  Gayliella mazoyerae T.O. Cho, Fredericq et Hommersand and 4 Chlorophyta: Acrochaete inflata   46_Congr SIBM form testi v. 11_feb_2010 44° Congresso della Società Italiana di Biologia Marina Roma, 14-16 maggio 2013 (Ercegovic) Gallardo et al., Cladophora battersii Hoek, Cladophora socialis  Kützing, and Uronema marinum Womersley are new introductions for the Venice lagoon. Uronema marinum is a small species coming from the Indo-Pacific region that is a new record also for the Mediterranean Sea and the European Atlantic coasts. Other species, such as the Rhodophyta: Lophosiphonia obscura (C.Agardh) Falkenberg, are taxa which were considered missing from the lagoon (Sfriso et al., 2009).  Of particular interest was the finding, in the close fishing ponds of the northern basin, of some species of high ecological value that had disappeared from  the open lagoon. In particular Lamprothamnion papulosum (Wallroth) J. Groves, a Chlorophyta belonging to the Characeae, was present and very abundant in Val Cavallino while, it was not found elsewhere. This is certainly one of the most sensitive macroalgae that colonize the Italian transitional systems and the first species that disappears with the minimum anthropogenic disturbance. Another species very common in the fishing ponds was Valonia aegagropila C. Agardh, a Chlorophyta that in the past colonized great part of the northern lagoon (Palude Maggiore and Valle Ca' Zane), but has disappeared since the late '80s (Sfriso et al., 2009).  A rare species that currently is very abundant only in these close environments is also the Rhodophyta Polysiphonia spinosa (C.Agardh). In addition the aquatic angiosperm Ruppia cirrhosa (Petagna) Grande, that is nearly missing in the rest of the lagoon, formed dense and well-structured meadows. Ruppia was heavily covered from small encrusting calcareous macroalgae (Hydrolithon and Pneophyllum) that are common on Cymodocea or Zostera but in this species had never been observed before neither in the open Venice lagoon nor in other  transitional systems. The R-MaQI application highlights the fishing ponds: Val Cavallino  and Val Dogà as the water body of the Venice lagoon with the highest ecological status.  With an average score of 0.95 out of  1.00, this water body was classified as "High", although it is considered a "highly modified environment". Conclusions - The last few decades the Venice lagoon has undergone continuous anthropogenic impacts with significant morphological changes and biodiversity loss. However, it is also reported the recording of many new species or the reappearance/conservation of species now believed lost especially by considering areas protected by significant anthropic impacts such as some close fishing ponds of the northern lagoon where the vegetation still presents pristine conditions. References ISPRA (2008) - Protocolli per il campionamento e la determinazione degli elementi di qualità biologica e fisico-chimica nell’ambito dei programmi di monitoraggio ex 2000/60/CE delle acque di transizione. 22 Dicembre, 34 pp. SFRISO A. (2010) - Macrophyte Quality Index (MaQI) per la valutazione dello stato ecologico dei sistemi di transizione dell’ecoregione-Mediterranea.  In:  Bonometto A., Gennaro  P., Boscolo Brusà R. (eds.), Linee Guida per l’applicazione del Macrophyte Quality Index (MaQI). Implementazione della Direttiva (2000/60/CE). ISPRA, 34 pp. SFRISO  A., CURIEL  D., RISMONDO A. (2009) -  The Venice Lagoon.  In: Cecere E., Petrocelli A., Izzo G., Sfriso A. (eds),  Flora and Vegetation of the Italian  Transitional Water Systems. CoRiLa, Multigraf, Spinea:17-80. 

M. Campolin

A. Sfriso

A. Buosi

A.A. Sfriso

Name not available

Archivio Istituzionale della Ricerca

https://iris.unive.it/retrieve/handle/10278/38898/29460/Sfriso%2c%20SIBM%202013.pdf

New macroalgae and rare species in the fishing ponds of the Venice Lagoon and ecological assessment.

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