Dans le cadre du cycle de conférences « Les Jeudis de l’ESSBO » L’école supérieure aura l’honneur d’accueillir ce jeudi 28 Février à 9h45 le Professeur Andrzej WITKOWSKI (Professeur à l’université de Szczecin) qui va donner une conférence intitulée « The national biomonitoring system for inland waters in Poland based on diatoms (Bacillariophyceae) ».

Vous êtes cordialement invités.

Note : la présence est obligatoire pour les étudiants de la deuxième année du Second cycle.

ABSTRACT

The national biomonitoring system for inland waters in Poland based on diatoms (Bacillariophyceae)

Andrzej Witkowski and Małgorzata Bąk,

Palaeoceanology Unit, University of Szczecin, Mickiewicza 16a, Szczecin, Poland

European Union legal regulations Water Directive 2000/60/WE requires permanent monitoring of the surface water quality in Poland. Implementation by Polish government began some years prior to Poland’s EU accession in 2004. In the first stage the natural (standing and flowing) and artificial (reservoirs) water types consistent in their characteristics have been established. To evaluate an ecological status of the waters under consideration, a Multimetric Diatomaceous Index (IO for rivers and IOJ for lakes) have been worked out. IO index is an arithmetic mean of three modules – trophy (based on IT, Rott et al. 1999), saprobity (based on SI, Rott et al. 1997) and abundance of species in the reference indices. An Index for lakes (IOJ) is composed of two modules – indicator of trophy (TJ) and reference species. Results achieved with application of these indices show one of the five ecological states: very good, good, moderate, poor, bad. Work continues to update the biomonitoring system and improvements to the determination key based on the most recent systematics of diatoms are planned. The existing forms have been updated, new taxonomic entities added and new bioindication (more precise) values have been introduced. Persons responsible for the biomonitoring system based on diatoms have attended a course to enhance their skills. This course encompassed all the stages of sampling and analysis from selection of sampling site, sample collection, preservation, preparation, storage and identification of taxa. National monitoring including other organismic groups is organized and supervised by Chief Inspectorate of Environmental Protection with branches in all 16 Administration Units (Voivodship) and several dozen offices in all large cities in Poland. This network covers the whole country and enables effective biomonitoring.