2025-04-302025-04-302022-06-24JESUS, Eryklys Vidal Meireles de. Efeitos da salinidade nos investimentos em carbono e assimetria flutuante em duas espécies de plantas de manguezal. Orientadora: Grazielle Sales Teodoro.; Co-orientadora: Vanessa Negrão Rodrigues. 2022. 29 f. Trabalho de Curso (Licenciatura em Ciências Biológicas) – Faculdade de Ciências Biológicas, Universidade Federal do Pará, Belém, 2025. Disponível em: https://bdm.ufpa.br/handle/prefix/8061. Acesso em:.https://bdm.ufpa.br/handle/prefix/8061Global warming has affected mangroves, in which it is predicted an increase in salinity in these coastal environments, which may affect the survival and ecological strategies of plant species. With these premises in mind, our work aimed to know what effects salinity has on biomass investments, leaf attributes and fluctuating asymmetry in two mangrove species. For this, we used seedlings of Avicennia germinans (L.) Stearn (Avicenniaceae) and Rhizophora racemosa G. Mey. (Rhizophoraceae) under the influence of a salinity gradient, corresponding to 5 treatments (0, 10, 20, 40 and 55 g of salt) for 3 months. At the end of the experiment, we measured root, stem and leaf biomass, leaf morphological traits (specific leaf area - SLA and leaf dry matter content - LDMC) and fluctuating asymmetry (AF). We observed that R. racemosa had the highest biomass averages, while A. germinans had the lowest averages. R. racemosa in the treatment with higher salinity allocated more carbon to the stem biomass, decreasing the leaf biomass. In the leaf traits A. germinans had the highest SLA and R. racemosa the highest LDMC. We expected that R. racemosa would always present high LDMC, however it was observed that in the more saline treatments there was a decrease in this trait and in leaf biomass as a whole. As for fluctuating asymmetry (FA), we expected higher rates of AF to occur in the more saline treatments, but our results did not show this response, showing that this metric may not be the best tool to help understand the behavior of A. germinans and R. racemosa in a salinity gradient. The species showed different responses to salinity. Under the influence of the salinity gradient, R. racemosa showed more variations in relation to the traits analyzed in our work in the high salinity treatments, while A. germinans did not effectively vary in the traits analyzed, which may be related to a greater tolerance to salt in this species.Acesso AbertoAlteração ambientalSalinidadePlantas do manguezalÁreas alagadasMonitoramento ambientalAvicenniaRizophoraceaeSereíbaSaraíbaMangue brancoMangue vermelhoEcologia dos manguezaisCNPQ::CIENCIAS BIOLOGICAS::ECOLOGIA::ECOLOGIA DE ECOSSISTEMASTrabalho de Curso - Graduação - MonografiaAttribution-NonCommercial-NoDerivatives 4.0 International