Temporal analysis and evolution of fish farming in Alto Paraíso municipality, RO, Western Amazon, Brazil

Abstract

The aimed of the study was to identify the characteristics of fish farms and the progress of the enterprises that practice the activity during the time span of 13 years (2008 to 2021) in Alto Paraíso municipality (RO, Western Amazon), aiming to know the general aspects and verify the number of enterprises, spatialization in the municipality and size. The study was carried out using remote sensing tools, analyzing the occupation in the municipality with fish farming, through the processing of images from the SPOT-5 satellite (for 2008) and CBERS-4A satellite (for 2021), made available by SEDAM and INPE Agencies, respectively. Image processing was performed using the GIS QGis 3.20.2 (Odense) and allowed the creation of image maps of fish farming in the study area. In addition, the vectorization of fish farms was carried out, where the water surface area was analyzed for the composition of heat maps that allowed a geographic analysis of the behavior of patterns. The results obtained shown that in the municipality there are small, medium and large fish farms, the evolution of fish farms in the municipality was in the order of 200% for the number of enterprises and 874% for the amount of water surface.