Estrutura e dinâmica de populações e comunidades de macroalgas em ambientes recifais da Paraíba.

• Ano de defesa: 2015
• Autor(a) principal: Máximo, Leandro do Nascimento
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal da Paraíba; Brasil; Engenharia e Meio Ambiente; Programa de Pós-Graduação em Ecologia; UFPB
• Palavras-chave em Português: Comunidades de macroalgas; Macroalgae assemblages; Explotação comercial; Atividade turística; Variação temporal; Bioindicação; Commercial exploitation; Tourism activity; Temporal variation; Biindication; CIENCIAS BIOLOGICAS::ECOLOGIA
• Link de acesso: https://repositorio.ufpb.br/jspui/handle/tede/8614

Algae are some of the most important organisms in reef environments as make up the base of the food chain, act as habitat structuring and serve as potential environmental health bio-indicators. This study aimed to analyze the structure and dynamics of macroalgae assemblages in Paraíba shallow reefs and evaluate the use of these bodies / processes as a mechanism bioindicador. This work was divide into three case studies in which the structure and dynamics of macroalgae assemblage play a fundamental role. The first work aimed to know the status of the population of Gracilaria caudata J. Agardh and macroalgae community associated with the Ponta de Mato reef, Cabedelo/PB, after the overexploitation impact occurred nearly 20 years and as a comparison based on a previous database. The strong impact on the dominant population was answered replacement of species and area once dominated by G. caudata was currently dominate by Jania subulata (Ellis & Solander) Sonder and Sargassum sp. The second study aimed to assess environmental health from two reef environments subjected to different tourist pressures, Picãozinho and São Gonçalo both located in João Pessoa/PB. In areas of intense tourist activity, the algae presented with lower richness, biomass and diversity compared with areas that receive no tourists, suggesting that the environment is under the influence of disorders and stress regime. The third case study aimed to analyze the structure and dynamics of macroalgae assemblages of Formosa reef, Cabedelo/PB with a time perspective. There was temporal variation in descriptors richness and biomass, with the lowest figures recorded in August/2013 and August/2014 and the highest in February/2014 and May/14. Understanding how the impacts (natural or anthropogenic) affect the distribution and dynamics of the species is important in the selection and potential use of bio-indicator species of environmental disturbances.