1. Data management system of R/V Muikku Markku Viljanen University of Joensuu

2. Computers and research devices LACHATDATA- BASE R DI CTD USER INTERFA CE SONDIASONDIA SONDIBSONDIB SEDI PROMARE Log in Meteorological station FLUORO- METER DEPTH COURSE Geographical Information SCUFA FLUORO ECHO SOUNDER ADCP LACHAT SEDI- MENT SCUF A ROSETTE MULTI- PLANKTON- SAMPLER There are 8 computers and several research devices on R/V Muikku. Each research device is connected to computer. Research data is stored to computers in ASCII format. Controlling computer is database computer and from which is an access to each computer via network.

3. Data management system Data files are brought to the University. Administrator stores the travel information and observation places to the database using a software made for this purpose. After this data files are downloaded to the database. Every research data is bound to a particular observation through time, place and coordinates. Besides information of travels and observations places database includes information of persons, lakes and research data (water chemistry, phytoplankton, CTD, weather information, water current, fluorometer). Software allows researchers to maintain, create reports and take advantage of research data.

4. Analyses 1.Phytoplankton biomass and species composition 2.Chlorophyll a and fluorometer measurements 3.Water quality: conductivity, pH, temperature, oxygen, light (PAR), Secchi depth, colour, turbidity, total phosphorus, PO4-P, total nitrogen, NO3-N, NH4-N, COD 4.Water currents: Speed and direction throughout the water column 5.Weather: Wind speed and direction, air pressure, temperature, rain detection, solar radiation