Mesophotic reef fish assemblages of the remote St. Peter and St. Paul's Archipelago, Mid-Atlantic Ridge, Brazil

Mesophotic reef fish assemblages of the remote St. Peter and St. Paul's Archipelago, Mid-Atlantic Ridge, Brazil

Author Rosa, Marcos Rogerio Google Scholar
Alves, Aline Cristina Google Scholar
Medeiros, Diego Valverde Google Scholar
Cavalcanti Coni, Ericka Oliveira Google Scholar
Ferreira, Camilo Moitinho Google Scholar
Ferreira, Beatrice Padovani Google Scholar
Rosa, Ricardo de Souza Google Scholar
Amado-Filho, Gilberto Menezes Google Scholar
Pereira-Filho, Guilherme Henrique Autor UNIFESP Google Scholar
de Moura, Rodrigo Leao Google Scholar
Thompson, Fabiano Lopes Google Scholar
Gomes Sumida, Paulo Yukio Google Scholar
Francini-Filho, Ronaldo Bastos Google Scholar
Abstract Mesophotic reef fish assemblages (30-90 m depth) of the small and remote St. Peter and St. Paul's Archipelago (SPSPA), Mid-Atlantic Ridge, Brazil, were characterized using remotely operated vehicles. Ordination analyses identified distinct fish assemblages in the upper (30-50 m) and lower (50-90 m) mesophotic zones, the former characterized by high abundances of species that are also abundant at euphotic reefs (Caranx lugubris, Melichthys niger, Stegastes sanctipauli and Chromis multilineata) and the latter dominated by two mesophotic specialists (Prognathodes obliquus and Chromis enchrysura). Planktivores dominated fish assemblages, particularly in the upper mesophotic zone, possibly due to a greater availability of zooplankton coming from the colder Equatorial Undercurrent in mesophotic depths of the SPSPA. Turf algae, fleshy macroalgae and scleractinian corals dominated benthic assemblages between 30 and 40 m depth, while bryozoans, black corals and sponges dominated between 40 and 90 m depth. Canonical correspondence analysis explained 74 % of the relationship between environmental characteristics (depth, benthic cover and complexity) and structure of fish assemblages, with depth as the most important independent variable. Juveniles of Bodianus insularis and adults of P. obliquus and C. enchrysura were clearly associated with branching black corals (Tanacetipathes spp.), suggesting that black corals play key ecological roles in lower mesophotic reefs of the SPSPA. Results from this study add to the global database about mesophotic reef ecosystems (MREs) and provide a baseline for future evaluations of possible anthropogenic and natural disturbances on MREs of the SPSPA.
Keywords Black corals
Bodianus insularis
Mesophotic reefs
Oceanic islands
Prognathodes obliquus
Stegastes sanctipauli
xmlui.dri2xhtml.METS-1.0.item-coverage New York
Language English
Sponsor Conselho Nacional de Desenvolvimento Cientifico e Tecnologico-CNPq
CNPq
Fundacao de Amparo a Pesquisa do Estado do Rio de Janeiro (FAPERJ)
Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES)
Grant number CNPq: 557185/09-2
CNPq: 484875/2011-6
Date 2016
Published in Coral Reefs. New York, v. 35, n. 1, p. 113-123, 2016.
ISSN 0722-4028 (Sherpa/Romeo, impact factor)
Publisher Springer
Extent 113-123
Origin http://dx.doi.org/10.1007/s00338-015-1368-x
Access rights Open access Open Access
Type Article
Web of Science ID WOS:000370955100010
URI https://repositorio.unifesp.br/handle/11600/57919

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