Contribuições ao cultivo sustentável de Kappaphycus alvarezii L.M.Liao 1996 e seus impactos socioambientais no Nordeste do Brasil

Abstract

This study examines the feasibility of sustainable cultivation of Kappaphycus alvarezii in Northeastern Brazil, focusing on Pitimbu (PB), and addresses legal, technical, socio- environmental, and statistical aspects. The research aims to balance economic development with environmental conservation, supporting the authorization of experimental cultivation of this macroalga. The methodology includes a literature review, environmental monitoring in three sample areas, and laboratory analyses. Free diving and underwater imaging were used to estimate macroalgae coverage on substrates, with data analyzed using the CoralNet system. The samples were categorized into Chlorophyta, Phaeophyta, and Rhodophyta groups. Statistical analyses, such as ANOVA, were conducted to assess differences in macroalgae coverage across the studied areas. The results did not detect the presence of K. alvarezii outside cultivation zones, supporting its low invasive potential. The study concludes that controlled cultivation is environmentally safe and presents potential for sustainable development, provided it is regulated and monitored through appropriate public policies.