Monitoring the marine environment operational practices in Europe

摘要: Abstract A survey of existing environmental monitoring networks operated in European waters and a review their main characteristics has been completed. Individual questionnaires have filled out by persons charge operations enabling gathering up-to-date, accurate information about equipment used actual operational practices. map the location these is shown table gives characteristics. These data to conduct analysis practices employed maintain installations. The various difficulties met operators as well costs are analysed. Methods procedures specific geographic situations physical monitored sites. means resources for maintenance related strongly dependent on distance between site closest harbour (logistic bases). In same way, frequency on-site interventions heavily dependant bio-productivity surrounding environment, bringing heavy constraint choice technique biofouling prevention. Last but not least, level quality seems be method- ology (both procedure frequency). archi- tecture measurement systems also an important factor efficiency systems.