Proposta de uma convenção cartográfica para padronização de mapeamento temático pesqueiro

Abstract

The ecosystemic approach in fisheries is increasing, and has led researchers and managers to look for a geospatial vision of the elements that directly or indirectly influence the maintenance of fish stocks and success of the fisheries. By incorporating the geographical dimension into studies of fishery problems, thematic mapping is automatically adopted as a tool for summarizing and communicating the results. However, the lack of standardization of the representation of visual data in graphic form often makes it impossible to compare the information contained in different maps. A mapping convention is therefore proposed, to represent fishery and marine environmental data. The parameters covered by the work are: water temperature, chlorophyll concentration, pH, dissolved oxygen, salinity, characteristics of populations and communities, characteristics of the seabed, and characteristics of the fisheries (catch, fishing effort and catch per unit of fishing effort). The shape, appearance and arrangement of the elements of these maps were stipulated. Thus, for each parameter to be represented, a palette of colors, size and shape of the symbol, and scale of standard values was created, seeking to make all the maps visually comparable with each other, and favoring the integration and combination of related data and information from different authors, corroborating the cognitive process on the fishing and environmental dynamics, and serving as the basis for decision-making and management of fishing activity in the region.