Áreas de pesca de lagosta: uma caracterização utilizando geoprocessamento e veículo de operação remota (R.O.V.)

Abstract

The Continental Shelf is a dynamic constantly studied by different areas, from the Marine Geology, Engineering, Fisheries, Oceanography, Biology etc passing by, including the first submerged region, extending from the coast toward the ocean basin, with an average slope 1: 1000, and an average width of about 40 nautical miles (70 km). The fishing resources available on the continental shelf are many, so that fishing is an extremely profitable activity for some countries. In Brazil there could be different since the country has in its geography over 8000 km of coastline and 200 miles are available for fishing. The Northeast, especially the state of Ceará had since the 70s until the 90s, a great weight on the scales of fish export business, powered by the main appeal and high commercial value abroad: the lobster. This work was carried out on the Continental Shelf eastern state of Ceara, aiming to characterize points of lobster fishing, using a methodology that combines digital image processing, point sampling of sediments, diving and shooting through a ROV (Remotely Operated Vehicle). The results are shown in the form of thematic maps all data and field processed in the laboratory, integrated, showing a perfect applicability of R. O. V. this crossover design and its efficiency in capturing images of the sampled points, thus proving the feasibility and safety of this methodology for future work. We conclude that the application of methodologies cross was effective and achieved its objectives, demonstrating that the use of ROV was essential and definitely better than scuba diving, leading us to adopt it in future in new projects, together with the sampling point or not, depending on the environment to be characterized and defined parameters.