2025-08-052025-08-052025-07-21LIMA, Yan Cássio Gatinho. Distribuição das florestas anãs de Avicennia germinans (L.) L. (Acanthaceae) na Reserva Extrativista Marinha de Tracuateua, Nordeste do Pará. Orientador: Marcus Emanuel Barroncas Fernandes, Coorientador: Madson Lucas Galvão de Brito. 2025. 30 f. Trabalho de Curso - Artigo (Licenciatura em Ciências Biológicas) – Faculdade de Ciências Biológicas. Instituto de Estudos Costeiros, Campus Universitário de Bragança, Universidade Federal do Pará, Bragança-PA, 2025. Disponível em: https://bdm.ufpa.br/handle/prefix/8425. Acesso em: .https://bdm.ufpa.br/handle/prefix/8425The structure of dwarf forests is a direct result of extreme environmental conditions, and understanding their distribution is essential to guide conservation actions. In this study, we investigated how interstitial salinity influences the structure and distribution of Avicennia germinans dwarf forests in the Tracuateua Marine Extractive Reserve, northeastern Pará. Ninety plots were delimited, and structural attributes such as diameter, height, density, and dominance were measured. Cluster analysis revealed three distinct structural groups, with the largest group concentrated near tidal channels. Salinity was measured during both dry and rainy seasons; it was found that during the dry season, it had a significant negative effect on tree height, while during the rainy season, this effect was negligible. The area occupied by dwarf forests corresponded to 16.8% of the RESEX, although much of it lies outside its legal boundaries. The results show that the distribution and structure of these formations are strongly associated with environmental microgradients, especially salinity and water availability. We conclude that seasonal saline stress shapes the structure of A. germinans dwarf forests, and that spatial recognition of these areas is essential to support the redefinition of conservation unit boundaries and to understand processes associated with mangrove expansion.Acesso AbertoAvicennia germinansManguezal anãoEstresse salinoGradiente ambientalReserva extrativistaCosta amazônica brasileiraDwarf mangroveSalinity stressEnvironmental gradientExtractive reserveBrazilian Amazon coastCNPQ::CIENCIAS EXATAS E DA TERRA::OCEANOGRAFIATrabalho de Curso - Graduação - ArtigoAttribution-NonCommercial-NoDerivs 3.0 Brazil