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Bryozoans are Major Modern Builders of South Atlantic Oddly Shaped Reefs.
Bastos, Alex C; Moura, Rodrigo L; Moraes, Fernando C; Vieira, Laura S; Braga, Juan Carlos; Ramalho, Laís V; Amado-Filho, Gilberto M; Magdalena, Ulises R; Webster, Jody M.
Afiliación
  • Bastos AC; Departamento de Oceanografia, Universidade Federal do Espírito Santo, Avenida Fernando Ferrari 514, Vitória, ES, 29090-600, Brazil. Alex.bastos@ufes.br.
  • Moura RL; Instituto de Biologia and SAGE/COPPE, Universidade Federal do Rio de Janeiro, Ilha do Fundão, Rio de Janeiro, RJ, 21944-970, Brazil.
  • Moraes FC; Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, Rua Pacheco Leão 915, Rio de Janeiro, RJ, 22460-030, Brazil.
  • Vieira LS; Programa de Pós Graduação em Dinâmica dos Oceanos e da Terra, Instituto de Geociências, Universidade Federal Fluminense, Avenida General Milton Tavares de Souza, s/n°, Niterói, RJ, 24210-346, Brazil.
  • Braga JC; Departamento de Estratigrafía y Paleontología, Universidad de Granada, 18002, Granada, Spain.
  • Ramalho LV; Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, Rua Pacheco Leão 915, Rio de Janeiro, RJ, 22460-030, Brazil.
  • Amado-Filho GM; Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, Rua Pacheco Leão 915, Rio de Janeiro, RJ, 22460-030, Brazil.
  • Magdalena UR; Instituto de Biologia and SAGE/COPPE, Universidade Federal do Rio de Janeiro, Ilha do Fundão, Rio de Janeiro, RJ, 21944-970, Brazil.
  • Webster JM; Geocoastal Research Group, School of Geosciences, The University of Sydney, Sydney, NSW, 2006, Australia.
Sci Rep ; 8(1): 9638, 2018 06 25.
Article en En | MEDLINE | ID: mdl-29941983
In major modern reef regions, either in the Indo-Pacific or the Caribbean, scleractinian corals are described as the main reef framework builders, often associated with crustose coralline algae. We used underwater cores to investigate Late Holocene reef growth and characterise the main framework builders in the Abrolhos Shelf, the largest and richest modern tropical reef complex in the South Western Atlantic, a scientifically underexplored reef province. Rather than a typical coralgal reef, our results show a complex framework building system dominated by bryozoans. Bryozoans were major components in all cores and age intervals (2,000 yrs BP), accounting for up to 44% of the reef framework, while crustose coralline algae and coral accounted for less than 28 and 23%, respectively. Reef accretion rates varied from 2.7 to 0.9 mm yr-1, which are similar to typical coralgal reefs. Bryozoan functional groups encompassed 20 taxa and Celleporaria atlantica (Busk, 1884) dominated the framework at all cores. While the prevalent mesotrophic conditions may have driven suspension-feeders' dominance over photoautotrophs and mixotrophs, we propose that a combination of historical factors with the low storm-disturbance regime of the tropical South Atlantic also contributed to the region's low diversity, and underlies the unique mushroom shape of the Abrolhos pinnacles.
Asunto(s)

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Océano Atlántico / Briozoos / Arrecifes de Coral Límite: Animals Idioma: En Revista: Sci Rep Año: 2018 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Reino Unido

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Océano Atlántico / Briozoos / Arrecifes de Coral Límite: Animals Idioma: En Revista: Sci Rep Año: 2018 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Reino Unido