Objectif To investigate the relationships between coastal eutrophication, stratification of the water column, plankton biomass development and the "blooming" of harmful or toxic phytoplankton species.The project will address the following tasks:A) Determination of the importance of macronutrients with emphasis on the establishment of the limiting factor(s), for algal blooms in the N-Adriatic Sea, along a 235 km coastal stretch between the Po delta and the Manche region (near Ancona town).B) Evaluation of the importance of macronutrient ratios (N/P/Si) on the structure of the phytoplankton community.C) Assessment of the importance of zooplankton grazing as a factor which may change the phytoplankton structure towards the dominance of harmful or toxic species.Field cruises on board research vessels of various sizes will be performed along transects, perpendicular to the coastline, comprising the whole range of hydrological and nutritional conditions (from mixed, eutrophic estuarine to stratified, oligotrophic offshore waters) to analyse CTD, light energy, inorganic and organic nutrients, algal and bacterial biomass and productivity and sinking rates of living and inorganic particles, with particular emphasis on the size distribution and structure of algal biomass (chlorophyll a and phaeopigments).The field studies will be complemented by mesocosm and laboratory investigations, which will include algal growth potential tests, nutrient enrichment bioassays, algal competition tests for nutrients, grazing experiments etc.A hydrodynamic model which will simulate the transport of the water masses in the area will be combined with an ecological model of phytoplankton production and decay. The model, validated on measured data, from the project as well as from literature data finally aims to be applied as a predictive tool for harmful algal blooms as well as a management tool for reducing the development of harmful algal blooms. Champ scientifique social scienceseconomics and businesseconomicsproduction economicsproductivityagricultural sciencesagricultural biotechnologybiomass Programme(s) FP3-ENV 1C - Specific research and technological development programme (EEC) in the field of the environment, 1990-1994 Thème(s) 040202 - Regional aspects of ecosystems protection Appel à propositions Data not available Régime de financement CSC - Cost-sharing contracts Coordinateur ISTITUTO SUPERIORE DI SANITA Contribution de l’UE Aucune donnée Adresse Viale Regina Elena 299 00161 ROMA Italie Voir sur la carte Coût total Aucune donnée Participants (6) Trier par ordre alphabétique Trier par contribution de l’UE Tout développer Tout réduire CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE France Contribution de l’UE Aucune donnée Adresse Place du Séminaire 17137 L'HOUMEAU Voir sur la carte Coût total Aucune donnée CHRISTIAN-ALBRECHTS UNIVERSITAET ZU KIEL Allemagne Contribution de l’UE Aucune donnée Adresse Duesternbrooker Weg 20 24105 KIEL Voir sur la carte Coût total Aucune donnée CONSEJO SUPERIOR DE INVESTIGACIONES CIENTIFICAS Espagne Contribution de l’UE Aucune donnée Adresse S/N,Passeig Joan de Borbo S/N 08039 BARCELONA Voir sur la carte Coût total Aucune donnée LUND UNIVERSITY Suède Contribution de l’UE Aucune donnée Adresse Ecology Building 223 62 Lund Voir sur la carte Coût total Aucune donnée National Centre for Marine Research Grèce Contribution de l’UE Aucune donnée Adresse 16604 Athens Voir sur la carte Coût total Aucune donnée Universidade Nova de Lisboa Portugal Contribution de l’UE Aucune donnée Adresse Quinta da Torre 2825 Monte de Caparica Voir sur la carte Coût total Aucune donnée