caa a22 4500 445891939 CHVBK 20180317145619.0 cr unu---uuuuu 170323e20110201xx s 000 0 eng 10.1007/s10750-010-0384-7 doi (NATIONALLICENCE)springer-10.1007/s10750-010-0384-7 Ecological classification of large lakes in Finland: comparison of classification approaches using multiple quality elements [Elektronische Daten] [Martti Rask, Kari-Matti Vuori, Heikki Hämäläinen, Marko Järvinen, Seppo Hellsten, Heikki Mykrä, Lauri Arvola, Jukka Ruuhijärvi, Jussi Jyväsjärvi, Irma Kolari, Mikko Olin, Erno Salonen, Pentti Valkeajärvi] Ecological classifications according to the Water Framework Directive (WFD) are presented for a set of 32 large (surface area >75km2) Finnish lakes. We compared three different approaches: classification according to the strictest biological quality element (One-out, All-out approach, OoAo); numerical integration of biological quality elements (BQE) to determine median scores; and the national classification based on weight-of-evidence (WoE) framework. We also examined the sensitivity of eutrophication metrics to phosphorus concentrations. The WoE based classification proposed that the ecological status in most lakes is high (12/32) or good (17), whereas the integration of BQEs ranked more lakes (18) to high status. Of the biological elements, macrophytes and phytoplankton indicated the status closest to those given by the national WoE classification whereas generally fish indicated higher and macroinvertebrates lower status. Compared to the OoAo classification, the national WoE approach gave similar, downgraded or upgraded status classes. Downgrading was due to the higher weight given to water quality and eutrophication pressures. Upgrading was due to the lower weight given to a single macroinvertebrate metric with poorly represented data. In our opinion, the classification based on the WoE approach produces more realistic status estimates than the OoAo classification. Nevertheless, in practical lake management the evidence from the strictest classification metrics still needs to be thoroughly considered. Springer Science+Business Media B.V., 2010 Ecological classification nationallicence Lake status nationallicence Large lakes nationallicence Biological quality elements nationallicence Water quality nationallicence Water Framework Directive nationallicence Rask Martti Finnish Game and Fisheries Research Institute, Helsinki, Finland aut Vuori Kari-Matti Finnish Environment Institute, Helsinki, Finland aut Hämäläinen Heikki University of Jyväskylä, Jyvaskyla, Finland aut Järvinen Marko Finnish Environment Institute, Helsinki, Finland aut Hellsten Seppo Finnish Environment Institute, Helsinki, Finland aut Mykrä Heikki Finnish Environment Institute, Helsinki, Finland aut Arvola Lauri University of Helsinki, Helsinki, Finland aut Ruuhijärvi Jukka Finnish Game and Fisheries Research Institute, Helsinki, Finland aut Jyväsjärvi Jussi University of Jyväskylä, Jyvaskyla, Finland aut Kolari Irma Finnish Game and Fisheries Research Institute, Helsinki, Finland aut Olin Mikko University of Helsinki, Helsinki, Finland aut Salonen Erno Finnish Game and Fisheries Research Institute, Helsinki, Finland aut Valkeajärvi Pentti Finnish Game and Fisheries Research Institute, Helsinki, Finland aut Hydrobiologia Springer Netherlands 660/1(2011-02-01), 37-47 0018-8158 660:1<37 2011 660 10750 https://doi.org/10.1007/s10750-010-0384-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10750-010-0384-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Rask Martti Finnish Game and Fisheries Research Institute, Helsinki, Finland aut NATIONALLICENCE 700 1- Vuori Kari-Matti Finnish Environment Institute, Helsinki, Finland aut NATIONALLICENCE 700 1- Hämäläinen Heikki University of Jyväskylä, Jyvaskyla, Finland aut NATIONALLICENCE 700 1- Järvinen Marko Finnish Environment Institute, Helsinki, Finland aut NATIONALLICENCE 700 1- Hellsten Seppo Finnish Environment Institute, Helsinki, Finland aut NATIONALLICENCE 700 1- Mykrä Heikki Finnish Environment Institute, Helsinki, Finland aut NATIONALLICENCE 700 1- Arvola Lauri University of Helsinki, Helsinki, Finland aut NATIONALLICENCE 700 1- Ruuhijärvi Jukka Finnish Game and Fisheries Research Institute, Helsinki, Finland aut NATIONALLICENCE 700 1- Jyväsjärvi Jussi University of Jyväskylä, Jyvaskyla, Finland aut NATIONALLICENCE 700 1- Kolari Irma Finnish Game and Fisheries Research Institute, Helsinki, Finland aut NATIONALLICENCE 700 1- Olin Mikko University of Helsinki, Helsinki, Finland aut NATIONALLICENCE 700 1- Salonen Erno Finnish Game and Fisheries Research Institute, Helsinki, Finland aut NATIONALLICENCE 700 1- Valkeajärvi Pentti Finnish Game and Fisheries Research Institute, Helsinki, Finland aut NATIONALLICENCE 773 0- Hydrobiologia Springer Netherlands 660/1(2011-02-01), 37-47 0018-8158 660:1<37 2011 660 10750 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer