Evaluation of the stocks of Hypnea musciformis (rhodophyta: gigartinales) on two beaches in Bahia, Brazil

Autores/as

  • Taiara Aguiar Caires Universidade Federal da Bahia; Instituto de Biologia; Departamento de Botânica; Laboratório de Algas Marinhas
  • Iara Oliveira Costa Universidade do Estado da Bahia; Programa de Pós-Graduação em Biodiversidade Vegetal
  • Priscila Barreto de Jesus Universidade Federal da Bahia; Instituto de Biologia; Departamento de Botânica; Laboratório de Algas Marinhas
  • Mara Rojane Barros de Matos Universidade do Estado da Bahia; Departamento de Ciências Exatas e da Terra
  • Guilherme Henrique Pereira-Filho Universidade Federal Rural do Rio de Janeiro; Departamento de Botânica
  • José Marcos de Castro Nunes Universidade do Estado da Bahia; Departamento de Ciências Exatas e da Terra

DOI:

https://doi.org/10.1590/S1679-87592013000100007

Palabras clave:

Bahia, Biomass, Carragenophyte, Seasonal Variation, Seaweed

Resumen

Hypnea musciformis occurs widely in the northeast coast of Brazil, and it is one of the most important natural sources of k-carrageenan, which is used in food and cosmetic industries. Despite its potential for exploitation little is known about its ecology. The aim of this study was to investigate the biology and ecology of H. musciformis in Brazil through analyses of biomass stock and accompanying flora. Two populations of H. musciformis were analyzed: those on the beaches of Stella Maris and Itacimirim (Bahia, Brazil). Eight samplings were conducted between 2007 and 2009 during the dry and rainy seasons. The algae were sampled along transects (20 m) using quadrats (0.04 m²) in three different hydrodynamic regions of the reefs (TP, PRR and FRR). The t-Test, Dunn's Test and parametric and nonparametric ANOVA were used for statistical analyses. 17 host species and 41 associated species were identified. The highest biomass stock was observed during the dry season. On Stella Maris, the region with the highest biomass stock was FRR; on Itacimirim, TP had the highest biomass value. This study permits the assumption that seasonality, microhabitat, hydrodynamic and micro scale factors contribute to variation in biomass stock in H. musciformis populations.

Descargas

Los datos de descarga aún no están disponibles.

Descargas

Publicado

2013-03-01

Número

Sección

naodefinida

Cómo citar

Evaluation of the stocks of Hypnea musciformis (rhodophyta: gigartinales) on two beaches in Bahia, Brazil . (2013). Brazilian Journal of Oceanography, 61(1), 65-71. https://doi.org/10.1590/S1679-87592013000100007