| Title | Comparing aspirations: Intercalibration of ecological status concepts across European lakes for littoral diatoms |
| Abstract | Eleven European countries participated in an exercise to harmonise diatom-based methods used for status assessment in lakes. Lakes were divided into low, medium and high alkalinity types for this exercise. However, it was not possible to perform a full intercalibration on low alkalinity lakes due to the short gradient and confounding factors. Values of the Trophie Index were computed for all samples in order that national datasets could all be expressed on a common scale. Not all participants had reference sites against which national methods could be standardised and, therefore, a Generalised Linear Modelling approach was used to control the effect of national differences in datasets. This enabled the high/good and good/moderate status boundaries to be expressed on a common scale and for deviations beyond ±0.25 class widths to be identified. Those countries which had relaxed boundaries were required to adjust these to within ±0.25 class widths whilst the intercalibration rules allowed those countries with more stringent boundaries to retain these. Despite biogeographical and typological differences between countries, there was broad agreement on the characteristics of high, good and moderate status diatom assemblages, and the exercise has ensured consistent application of Water Framework Directive assessments around Europe. © 2014 Springer International Publishing Switzerland. |
| Source | Hydrobiologia (The Hague. Print) 734 (1), pp. 125–141 |
| Keywords | DiatomsEcological statusIntercalibrationLakePhytobenthosWater Framework Directive |
| Journal | Hydrobiologia (The Hague. Print) |
| Editor | Kluwer Academic Publishers, Boston, Paesi Bassi |
| Year | 2014 |
| Type | Articolo in rivista |
| DOI | 10.1007/s10750-014-1874-9 |
| Authors | Kelly, Martyn G.; Urbani?, Gorazd; Ács, Éva C A; Bennion, Helen; Bertrin, Vincent; Burgess, Amy R.; Denys, Luc; Gottschalk, Steffi; Kahlert, Maria; Karjalainen, Satu Maaria; Kennedy, Bryan; Kosi, Gorazd; Marchetto, Aldo; Morin, Soizic; Pici?ska-Fa?tynowicz, Joanna; Poikane, Sandra; Rosebery, Juliette; Schoenfelder, Ilka; Schoenfelder, Joerg; Várbíró, Gábor |
| Text | 313855 2014 10.1007/s10750 014 1874 9 Scopus 2 s2.0 84901439452 Diatoms Ecological status Intercalibration Lake Phytobenthos Water Framework Directive Comparing aspirations Intercalibration of ecological status concepts across European lakes for littoral diatoms Kelly, Martyn G.; Urbani , Gorazd; Ács, Éva C A; Bennion, Helen; Bertrin, Vincent; Burgess, Amy R.; Denys, Luc; Gottschalk, Steffi; Kahlert, Maria; Karjalainen, Satu Maaria; Kennedy, Bryan; Kosi, Gorazd; Marchetto, Aldo; Morin, Soizic; Pici ska Fa tynowicz, Joanna; Poikane, Sandra; Rosebery, Juliette; Schoenfelder, Ilka; Schoenfelder, Joerg; Varbiro, Gabor Bowburn Consultancy; Institute for Water of the Republic of Slovenia; University of Ljubljana; Magyar Tudomanyos Akademia; UCL; Irstea; Research Institute for Nature and Forest, Brussels; Sveriges lantbruksuniversitet; Oulun Yliopisto; EPA; National Institute of Biology Ljubljana; Consiglio Nazionale delle Ricerche; Ministerstwo Srodowiska, Poland; European Commission Joint Research Centre, Ispra; Bureau for Diatom Analysis; Brandenburg State Office of Environment Eleven European countries participated in an exercise to harmonise diatom based methods used for status assessment in lakes. Lakes were divided into low, medium and high alkalinity types for this exercise. However, it was not possible to perform a full intercalibration on low alkalinity lakes due to the short gradient and confounding factors. Values of the Trophie Index were computed for all samples in order that national datasets could all be expressed on a common scale. Not all participants had reference sites against which national methods could be standardised and, therefore, a Generalised Linear Modelling approach was used to control the effect of national differences in datasets. This enabled the high/good and good/moderate status boundaries to be expressed on a common scale and for deviations beyond ±0.25 class widths to be identified. Those countries which had relaxed boundaries were required to adjust these to within ±0.25 class widths whilst the intercalibration rules allowed those countries with more stringent boundaries to retain these. Despite biogeographical and typological differences between countries, there was broad agreement on the characteristics of high, good and moderate status diatom assemblages, and the exercise has ensured consistent application of Water Framework Directive assessments around Europe. © 2014 Springer International Publishing Switzerland. 734 Published version http //www.scopus.com/record/display.url eid=2 s2.0 84901439452 origin=inward paper Comparing_aspirations.pdf Articolo in rivista Kluwer Academic Publishers 0018 8158 Hydrobiologia The Hague. Print Hydrobiologia The Hague. Print Hydrobiologia The Hague. Print Hydrobiologia. The Hague. Print Hydrobiologia Dordrecht The Hague. Print Hydrobiologia Boston The Hague. Print Hydrobiologia London The Hague. Print aldo.marchetto MARCHETTO ALDO TA.P04.016.004 Ecologia teorica e applicata degli ecosistemi acquatici |
