Fitossociologia de três formações vegetais da restinga do crispim, município de Marapanim, Pará

Abstract

In the phytosociological inventory, the method of plots was used to analyze the vegetation distribution of the restinga do Crispim, municipality of Marapanim, Pará State. In each vegetation formation, 100 squares of 1m2 were sampled to determine the frequency and dominance of species. The soil was chemically and physically analyzed, as well as the sand movement through two plani-altimetric profiles. With the results it was possible to verify the delimitation of three vegetation formations: halophilous, psammophilous reptile and herbaceous swamp. In the three formations 10 families and 19 species were observed, where the dominant species for the halophilic one were Sesuvium portulacastrum L., Sporobolus virginicus (L.) Kunth and Iresine vermicularis Moq, for the reptant psammophyllous Ipomoea littoralis (L.) Choisy and Sporobolus virginicus (L.) Kunth and for the herbaceous marsh Fimbristylis spadicea Vahl., Paspalum vaginatum Sw. and Sporobolus virginicus (L.) Kunth.