| Abstract |
The aim of this project was to identify patterns in fleet activity, patterns and trends in catch and landings and to provide an innovative approach of the interaction between environmental and fishery parameters. Time-series for the period 1998-2003 were used in order to test the correlations between environmental and fishery parameters. The results intended to contribute in fisheries conservation activities. The study area (35οΝ, 19οΕ and 42οΝ, 30οΕ) was divided by two different spatial modes into three major water masses (North Aegean, South Aegean, Ionian) and into seven fisheries grounds for a more integrated approach. The environmental parameters used were the Sea Surface Temperature (SST), the Sea Surface Chlorophyll-a (Chl-a) concentration and the wind velocity. SST and Chl-a concentration data were obtained by remote sensing, while wind velocity data derived from official monitoring stations. Fisheries data derived from the Management System of Hellenic Fisheries Resources (MSHFR). Days-at-Sea (DAS) and Catch-per-Unit Effort (CPUE) were used as fisheries indices. All data sets were organized in a time-series format and analyzed with M.A.F.A (Minimum/Maximum Autocorrelation Factor Analysis). Geographic Information Systems (GIS) were used in two phases of the analysis in order to process remote sensing data and create time-series from remote sensing data. The evaluation of the statistical output indicated several patterns related to the activity of fishing fleet and to CPUE with respect to environmental parameters. Results provide evidence of a series of patterns describing the Greek fishery sector. In conclusion the output of this study could be used for conservation purposes.
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Συσχέτιση αλιευτικών και περιβαλλοντικών παραμέτρων
