Queiroz, Maria Gabriela de creator Silva, Thieres George Freire da creator Souza, Carlos André Alves de creator Jardim, Alexandre Maniçoba da Rosa Ferraz creator Araújo Júnior, George do Nascimento creator Souza, Luciana Sandra Bastos de creator Moura, Magna Soelma Beserra de creator text periodical abstract or summary bl. continuing eng Abstract The vegetation structure is a good indicator of the conservation condition of an ecosystem, since it reflects alterations caused by anthropic action. This study proposes to analyze the phytosociological aspects of the Caatinga domain under anthropic disturbance and their correlations with hydrological variables. Twenty-five 400 m2 plots were sampled in the municipality of Floresta - PE, Brazil. Phytosociological parameters such as density, frequency and dominance were calculated. The seasonality of plant area index was analyzed for six species. The association between structural characteristics and hydrological variables (throughfall, stemflow and interception loss) in the species was evaluated by multivariate analysis. A total of 930 individuals, six families and 10 species were recorded. The abundance of the species Cenostigma pyramidale in the area may be an indicator of the degree of change in the vegetation. The structural characteristics of the species revealed little association with rainfall partitioning. Keywords: phytosociology, plant area index, semi-arid. Publicação on-line; 30 ref.; 3 tables; 3 illus.; Summary (En) VEGETAÇÃO CLIMA SEMIÁRIDO CONSERVAÇÃO Rio de Janeiro-RJ Instituto de Florestas - UFRRJ 1994 2025-0459 1415-0980 / ISSN 2179-8087 0nline BR2026001916 v. 28(1) p. 1-10; (2021) https://www.scielo.br/j/floram/a/NLMfrFhFRjMcnRQyLC9XThb/?format=pdf&lang=en https://www.scielo.br/j/floram/a/NLMfrFhFRjMcnRQyLC9XThb/?format=pdf&lang=en BR-BrBNA 260612 20260612064238.0 eng