| Title | Benefits and limitations of an intercalibration of phytoplankton assessment methods based on the Mediterranean GIG reservoir experience |
| Abstract | The status of European legislation regarding inland water quality after the enactment of the Water Framework Directive (WFD) originated scientific effort to develop reliable methods, primarily based on biological parameters. An important aspect of the process was to ensure that quality assessment was comparable between the different Member States. The Intercalibration process (IC), required in the WFD ensures the unbiased application of the norm. The presented results were developed in the context of the 2nd IC phase. An overview of the reservoir type definition of the Lake Mediterranean Geographical Intercalibration Group, where four types were considered divided by both alkalinity and climate, together with the results for selection of Maximum Ecological Potential sites (MEP) are presented. MEP reservoirs were selected based on pressure and biological variables. Three phytoplankton-based assessment methods were intercalibrated using data from Mediterranean countries. The Mediterranean Assessment System for Reservoirs Phytoplankton (Spain), the New Mediterranean Assessment System for Reservoirs Phytoplankton (Portugal and Cyprus) and the New Italian Method (Italy) were applied. These three methods were compared through option 3 of the Intercalibration Guide. The similarity of the assessments was quantified, and the Good/Moderate (GM) boundaries assessed. All three methods stood as comparable at the GM boundary except for the MASRP in siliceous wet reservoirs, which was slightly stricter. Finally, the main taxonomic groups represented in the phytoplankton community at MEP conditions were identified, as well as their main changes with an increasing trophic status. MEP sites are dominated by chrysophytes in siliceous wet reservoirs and by the diatoms Cyclotella and Achnanthes in calcareous ones. Cyanobacteria take over the community in both calcareous and siliceous wet reservoirs as eutrophication increases. In summary, the relevance and reliability of the quality assessment methods compared were confirmed both from an ecological perspective and a health risk management point of view. |
| Source | Science of the total environment 538, pp. 169–179 |
| Keywords | Boundary biasCyanobacteriaEcological quality assessmentIntercalibrationMediterranean reservoirsPhytoplankton |
| Journal | Science of the total environment |
| Editor | Elsevier, Lausanne ;, Paesi Bassi |
| Year | 2015 |
| Type | Articolo in rivista |
| DOI | 10.1016/j.scitotenv.2015.08.042 |
| Authors | Pahissa, José; Catalan, Jordi; Morabito, Giuseppe; Dörflinger, Gerald; Ferreira, João; Laplace-Treyture, Christophe; Gîrbea, Ruxandra; Marchetto, Aldo; Polykarpou, Polina; de Hoyos, Caridad |
| Text | 334681 2015 10.1016/j.scitotenv.2015.08.042 Scopus 2 s2.0 84939602741 Boundary bias Cyanobacteria Ecological quality assessment Intercalibration Mediterranean reservoirs Phytoplankton Benefits and limitations of an intercalibration of phytoplankton assessment methods based on the Mediterranean GIG reservoir experience Pahissa, Jose; Catalan, Jordi; Morabito, Giuseppe; Dorflinger, Gerald; Ferreira, João; Laplace Treyture, Christophe; Girbea, Ruxandra; Marchetto, Aldo; Polykarpou, Polina; de Hoyos, Caridad CEDEX; CSIC Centro de Estudios Avanzados de Blanes CEAB ; Consiglio Nazionale delle Ricerche; Water Development Department; Portuguese Environment Agency; Irstea; Bucuresti; MER Lab Ltd The status of European legislation regarding inland water quality after the enactment of the Water Framework Directive WFD originated scientific effort to develop reliable methods, primarily based on biological parameters. An important aspect of the process was to ensure that quality assessment was comparable between the different Member States. The Intercalibration process IC , required in the WFD ensures the unbiased application of the norm. The presented results were developed in the context of the 2nd IC phase. An overview of the reservoir type definition of the Lake Mediterranean Geographical Intercalibration Group, where four types were considered divided by both alkalinity and climate, together with the results for selection of Maximum Ecological Potential sites MEP are presented. MEP reservoirs were selected based on pressure and biological variables. Three phytoplankton based assessment methods were intercalibrated using data from Mediterranean countries. The Mediterranean Assessment System for Reservoirs Phytoplankton Spain , the New Mediterranean Assessment System for Reservoirs Phytoplankton Portugal and Cyprus and the New Italian Method Italy were applied. These three methods were compared through option 3 of the Intercalibration Guide. The similarity of the assessments was quantified, and the Good/Moderate GM boundaries assessed. All three methods stood as comparable at the GM boundary except for the MASRP in siliceous wet reservoirs, which was slightly stricter. Finally, the main taxonomic groups represented in the phytoplankton community at MEP conditions were identified, as well as their main changes with an increasing trophic status. MEP sites are dominated by chrysophytes in siliceous wet reservoirs and by the diatoms Cyclotella and Achnanthes in calcareous ones. Cyanobacteria take over the community in both calcareous and siliceous wet reservoirs as eutrophication increases. In summary, the relevance and reliability of the quality assessment methods compared were confirmed both from an ecological perspective and a health risk management point of view. 538 Published version http //www.scopus.com/record/display.url eid=2 s2.0 84939602741 origin=inward articolo Panissa.pdf Articolo in rivista Elsevier 0048 9697 Science of the total environment Science of the total environment Sci. total environ. aldo.marchetto MARCHETTO ALDO giuseppe.morabito MORABITO GIUSEPPE TA.P04.016.004 Ecologia teorica e applicata degli ecosistemi acquatici |
