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https://hdl.handle.net/2440/96430
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Type: | Journal article |
Title: | Mesophotic reef fish assemblages of the remote St. Peter and St. Paul's Archipelago, Mid-Atlantic Ridge, Brazil |
Author: | Rosa, M. Alves, A. Medeiros, D. Coni, E. Ferreira, C. Ferreira, B. de Souza Rosa, R. Amado-Filho, G. Pereira-Filho, G. Moura, R. Thompson, F. Sumida, P. Francini-Filho, R. |
Citation: | Coral Reefs, 2016; 35(1):113-123 |
Publisher: | Springer-Verlag |
Issue Date: | 2016 |
ISSN: | 0722-4028 1432-0975 |
Statement of Responsibility: | Marcos Rogerio Rosa, Aline Cristina Alves, Diego Valverde Medeiros, Ericka Oliveira Cavalcanti Coni, Camilo Moitinho Ferreira, Beatrice Padovani Ferreira, Ricardo de Souza Rosa, Gilberto Menezes Amado-Filho, Guilherme Henrique Pereira-Filho, Rodrigo Leão de Moura, Fabiano Lopes Thompson, Paulo Yukio Gomes Sumida, Ronaldo Bastos Francini-Filho |
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 |
Description: | Report |
Rights: | © Springer-Verlag Berlin Heidelberg 2015 |
DOI: | 10.1007/s00338-015-1368-x |
Published version: | http://link.springer.com/article/10.1007/s00338-015-1368-x |
Appears in Collections: | Aurora harvest 3 Earth and Environmental Sciences publications |
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