| Title | Marine phytoplankton database of Latium coastal waters (Middle Tyrrhenian Sea - Italy): checklist and Self Organizing Maps analyses of data collected from 2002 to 2017. |
| Abstract | First information on phytoplankton assemblages from Latium coast date back to the 1980s and referred to limited areas such as that facing Latina (Massera-Bottazzi et al., 1980) or the Tiber river mouth area (Puddu et al., 1983). Later studies mainly focused on dominant microphytoplankton taxa (Congestri et al., 2006) and harmful algae (Congestri et al., 2001), with particular attention to the toxin producing species (Congestri et al., 2004, Bianco et al., 2006, Congestri et al., 2006, Congestri et al., 2008). The Regional Agency for Environmental Protection of Latium - ARPA Lazio carried out several monitoring programs of marine coastal waters, comprising the assessment of microphytoplankton, as required by the national regulation in the framework of European Conventions or Directives. These included: i) the Monitoring Program for Protection of the Costal Marine Environment (L. 979/1982) according to the Convention for the Protection of the Marine Environment and the Coastal Region of the Mediterranean, conducted from June 2002 to January 2007 and from August 2008 to July 2009; ii) the monitoring activities (D.Lgs. 152/06) required by the Water Framework Directive 2000/60/EC that started in 2009 and is still ongoing; iii) the monitoring program (D.Lgs. 190/10) prescribed by the Marine Strategy Directive 2008/56/EC that started in 2015 and is still ongoing. Finally, surveillance activities (D.Lgs. 116/08), were conducted in compliance with the Directive 2006/7/EC concerning the management of bathing water quality with a special focus on the harmful algal blooms. Characterization of microphytoplankton in terms of taxonomic composition was performed with light and electron microscopy and relative abundances were assessed according to the Utermöhl method. This work aimed to the harmonization of data collected over time during multiple monitoring activities by providing a revised, extended and updated list of the phytoplankton taxa recorded in about 1200 samples from marine coastal waters of Latium Region thus implementing a validated local phytoplankton database. In order to characterize the microphytoplankton assemblages we performed statistical analysis based on the unsupervised Artificial Neural Networks (ANNs), in particular the Self Organizing Maps (SOMs), this was chosen for the intrinsic heterogeneity of the dataset itself. SOMs analyses allowed to group the samples according to the relative phytoplankton composition and abundance data. Thus, a preliminary assessment of the "physiognomy" of phytoplankton along the Lazio coasts was provided. We expanded the floristic list through the observations of net samples as well as samples collected in the case of occasional water discoloration, thus providing a checklist consisting of 293 taxa at least at genus level, including 35 harmful species, that will be a reference for current and future monitoring programs. |
| Source | Riunione Scientifica del Gruppo di Lavoro per la Algologia, Societa Italiana di Botanica, Bari, 15-16 novembre 2019 |
| Keywords | phytoplanktontaxonomyTyrrhenian Sea |
| Year | 2019 |
| Type | Abstract in atti di convegno |
| Authors | Bianco I., Russo T., Viaggiu E., Sarno D., Caroppo C., Congestri R. |
| Text | 411186 2019 phytoplankton taxonomy Tyrrhenian Sea Marine phytoplankton database of Latium coastal waters Middle Tyrrhenian Sea Italy checklist and Self Organizing Maps analyses of data collected from 2002 to 2017. Bianco I., Russo T., Viaggiu E., Sarno D., Caroppo C., Congestri R. Agenzia Regionale Protezione ambientale del Lazio Arpa Lazio , Stazione Zoologica Anton Dohrn, Napoli, , Universita degli Studi di Roma Tor Vergata, Dipartimento di Biologia, CNR IRSA Bottalico A., Perrone C., Lisco A., Mincuzzi A. Published version Riunione Scientifica del Gruppo di Lavoro per la Algologia, Societa Italiana di Botanica Bari 15 16 novembre 2019 Nazionale Contributo First information on phytoplankton assemblages from Latium coast date back to the 1980s and referred to limited areas such as that facing Latina Massera Bottazzi et al., 1980 or the Tiber river mouth area Puddu et al., 1983 . Later studies mainly focused on dominant microphytoplankton taxa Congestri et al., 2006 and harmful algae Congestri et al., 2001 , with particular attention to the toxin producing species Congestri et al., 2004, Bianco et al., 2006, Congestri et al., 2006, Congestri et al., 2008 . The Regional Agency for Environmental Protection of Latium ARPA Lazio carried out several monitoring programs of marine coastal waters, comprising the assessment of microphytoplankton, as required by the national regulation in the framework of European Conventions or Directives. These included i the Monitoring Program for Protection of the Costal Marine Environment L. 979/1982 according to the Convention for the Protection of the Marine Environment and the Coastal Region of the Mediterranean, conducted from June 2002 to January 2007 and from August 2008 to July 2009; ii the monitoring activities D.Lgs. 152/06 required by the Water Framework Directive 2000/60/EC that started in 2009 and is still ongoing; iii the monitoring program D.Lgs. 190/10 prescribed by the Marine Strategy Directive 2008/56/EC that started in 2015 and is still ongoing. Finally, surveillance activities D.Lgs. 116/08 , were conducted in compliance with the Directive 2006/7/EC concerning the management of bathing water quality with a special focus on the harmful algal blooms. Characterization of microphytoplankton in terms of taxonomic composition was performed with light and electron microscopy and relative abundances were assessed according to the Utermohl method. This work aimed to the harmonization of data collected over time during multiple monitoring activities by providing a revised, extended and updated list of the phytoplankton taxa recorded in about 1200 samples from marine coastal waters of Latium Region thus implementing a validated local phytoplankton database. In order to characterize the microphytoplankton assemblages we performed statistical analysis based on the unsupervised Artificial Neural Networks ANNs , in particular the Self Organizing Maps SOMs , this was chosen for the intrinsic heterogeneity of the dataset itself. SOMs analyses allowed to group the samples according to the relative phytoplankton composition and abundance data. Thus, a preliminary assessment of the physiognomy of phytoplankton along the Lazio coasts was provided. We expanded the floristic list through the observations of net samples as well as samples collected in the case of occasional water discoloration, thus providing a checklist consisting of 293 taxa at least at genus level, including 35 harmful species, that will be a reference for current and future monitoring programs. Abstract in atti di convegno carmela.caroppo CAROPPO CARMELA DTA.AD006.053.001 CYANOLAKES |
