Ecological concerns from queries analysis of pc-fishery time series database of Greece

New software approaches seem to be a necessity in order to facilitate end users in fields like ecology and ecosystem to analyse information extracted from databases. In the present paper the results of the queries applied on the Greek PC fishery time series database are generalised and analysed. The research concerns 71 registered fish species in 16 Greek fish regions in order to point out fish species without catches for 1990-1997 and 1998-2005 periods. A comparison between the two periods has been made and useful indications have appeared. The software developed for the analysis of data can be applied for studying changes in fish catch diversity every following year.