An extensive reef system at the Amazon River mouth
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNIFESP |
Texto Completo: | https://repositorio.unifesp.br/handle/11600/56079 https://dx.doi.org/10.1126/sciadv.1501252 |
Resumo: | Large rivers create major gaps in reef distribution along tropical shelves. The Amazon River represents 20% of the global riverine discharge to the ocean, generating up to a 1.3 x 10(6)-km(2) plume, and extensive muddy bottoms in the equatorial margin of South America. As a result, a wide area of the tropical North Atlantic is heavily affected in terms of salinity, pH, light penetration, and sedimentation. Such unfavorable conditions were thought to imprint a major gap in Western Atlantic reefs. We present an extensive carbonate system off the Amazon mouth, underneath the river plume. Significant carbonate sedimentation occurred during lowstand sea level, and still occurs in the outer shelf, resulting in complex hard-bottom topography. A permanent near-bottom wedge of ocean water, together with the seasonal nature of the plume's eastward retroflection, conditions the existence of this extensive (similar to 9500 km(2)) hard-bottom mosaic. The Amazon reefs transition from accretive to erosional structures and encompass extensive rhodolith beds. Carbonate structures function as a connectivity corridor for wide depth-ranging reef-associated species, being heavily colonized by large sponges and other structure-forming filter feeders that dwell under low light and high levels of particulates. The oxycline between the plume and subplume is associated with chemoautotrophic and anaerobic microbial metabolisms. The system described here provides several insights about the responses of tropical reefs to suboptimal and marginal reef-building conditions, which are accelerating worldwide due to global changes. |
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Moura, Rodrigo Leão deAmado-Filho, Gilberto MenezesMoraes, Fernando Coreixas deBrasileiro, Poliana SilvaSalomon, Paulo SergioMahiques, Michel M.Bastos, Alex CardosoAlmeida, Marcelo G.Silva, Jomar M., Jr.Araujo, Beatriz F.Brito, Frederico P.Rangel, Thiago P.Oliveira, Braulio C. V.Bahia, Ricardo da GamaParanhos, Rodolfo P.Dias, Rodolfo J. S.Siegle, EduardoFigueiredo, Alberto G., Jr.Pereira, Renato CrespoLeal, Camille V.Hajdu, EduardoAsp, Nils E.Gregoracci, Gustavo Bueno [UNIFESP]Neumann-Leitao, SigridYager, Patricia L.Francini-Filho, Ronaldo BastosFroes, AdrianaCampeao, MarianaSilva, Bruno S.Moreira, Ana Paula B.Oliveira, LouisiSoares, Ana C.Araujo, LaisOliveira, Nara L.Teixeira, Joao B.Valle, Rogerio A. B.Thompson, Cristiane C.Rezende, Carlos E.Thompson, Fabiano Lopes2020-07-22T13:23:11Z2020-07-22T13:23:11Z2016Science Advances. Washington, v. 2, n. 4, p. -, 2016.2375-2548https://repositorio.unifesp.br/handle/11600/56079https://dx.doi.org/10.1126/sciadv.1501252WOS000380072100012.pdf10.1126/sciadv.1501252WOS:000380072100012Large rivers create major gaps in reef distribution along tropical shelves. The Amazon River represents 20% of the global riverine discharge to the ocean, generating up to a 1.3 x 10(6)-km(2) plume, and extensive muddy bottoms in the equatorial margin of South America. As a result, a wide area of the tropical North Atlantic is heavily affected in terms of salinity, pH, light penetration, and sedimentation. Such unfavorable conditions were thought to imprint a major gap in Western Atlantic reefs. We present an extensive carbonate system off the Amazon mouth, underneath the river plume. Significant carbonate sedimentation occurred during lowstand sea level, and still occurs in the outer shelf, resulting in complex hard-bottom topography. A permanent near-bottom wedge of ocean water, together with the seasonal nature of the plume's eastward retroflection, conditions the existence of this extensive (similar to 9500 km(2)) hard-bottom mosaic. The Amazon reefs transition from accretive to erosional structures and encompass extensive rhodolith beds. Carbonate structures function as a connectivity corridor for wide depth-ranging reef-associated species, being heavily colonized by large sponges and other structure-forming filter feeders that dwell under low light and high levels of particulates. The oxycline between the plume and subplume is associated with chemoautotrophic and anaerobic microbial metabolisms. The system described here provides several insights about the responses of tropical reefs to suboptimal and marginal reef-building conditions, which are accelerating worldwide due to global changes.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERS)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)BrasoilMCTIBrazilian NavyU.S. NSFGordon and Betty Moore Foundation (GBMF)Univ Fed Rio de Janeiro UFRJ, Inst Biol, BR-21941599 Rio De Janeiro, RJ, BrazilUniv Fed Rio de Janeiro, COPPE, Inst Alberto Luiz Coimbra Posgrad & Pesquisa Engn, Lab Sistemas Avancados Gestao Prod, BR-21941972 Rio de Janeiro, RJ, BrazilInst Pesquisas Jardim Bot Rio de Janeiro, BR-22460030 Rio De Janeiro, RJ, BrazilUniv Sao Paulo, Inst Oceanog, BR-05508120 Sao Paulo, SP, BrazilUniv Fed Espirito Santo, Dept Oceanog, BR-29199970 Vitoria, ES, BrazilUniv Estadual Norte Fluminense, Lab Ciencias Ambientais, Ctr Biociencias & Biotecnol, BR-28013602 Campos Dos Goytacazes, RJ, BrazilUniv Fed Fluminense, Inst Geociencias, BR-24210346 Niteroi, RJ, BrazilUniv Fed Fluminense, Inst Biol, BR-24210130 Niteroi, RJ, BrazilUniv Fed Rio de Janeiro, Museo Nacl, BR-20940040 Rio De Janeiro, RJ, BrazilFed Univ Para, Inst Estudos Costeiros, BR-68600000 Braganca, PA, BrazilUniv Fed Sao Paulo, Dept Ciencias Mar, BR-11070100 Santos, SP, BrazilUniv Fed Pernambuco, Dept Oceanog, BR-50670901 Recife, PE, BrazilUniv Georgia, Dept Marine Sci, Athens, GA 30602 USAUniv Fed Paraiba, BR-58297000 Rio Tinto, PB, BrazilUniv Estadual Santa Cruz, Dept Ciencias Biol, BR-45650000 Ilheus, BA, BrazilUniv Fed Sao Paulo, Dept Ciencias Mar, BR-11070100 Santos, SP, BrazilU.S. NSF: OCE-0934095GBMF: 2293GBMF: 2928Web of Science-engAmer Assoc Advancement ScienceScience AdvancesAn extensive reef system at the Amazon River mouthinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleWashington24info:eu-repo/semantics/openAccessreponame:Repositório Institucional da UNIFESPinstname:Universidade Federal de São Paulo (UNIFESP)instacron:UNIFESPORIGINALWOS000380072100012.pdfapplication/pdf2516971${dspace.ui.url}/bitstream/11600/56079/1/WOS000380072100012.pdf08d5429ba9d1e1509b9cdf3624801c83MD51open accessTEXTWOS000380072100012.pdf.txtWOS000380072100012.pdf.txtExtracted texttext/plain79892${dspace.ui.url}/bitstream/11600/56079/5/WOS000380072100012.pdf.txt619b82737dcff28315b45572748105c1MD55open accessTHUMBNAILWOS000380072100012.pdf.jpgWOS000380072100012.pdf.jpgIM Thumbnailimage/jpeg7842${dspace.ui.url}/bitstream/11600/56079/7/WOS000380072100012.pdf.jpgc3de230ba8defdc2ff20850c98425a5bMD57open access11600/560792023-06-05 19:38:58.005open accessoai:repositorio.unifesp.br:11600/56079Repositório InstitucionalPUBhttp://www.repositorio.unifesp.br/oai/requestopendoar:34652023-06-05T22:38:58Repositório Institucional da UNIFESP - Universidade Federal de São Paulo (UNIFESP)false |
dc.title.en.fl_str_mv |
An extensive reef system at the Amazon River mouth |
title |
An extensive reef system at the Amazon River mouth |
spellingShingle |
An extensive reef system at the Amazon River mouth Moura, Rodrigo Leão de |
title_short |
An extensive reef system at the Amazon River mouth |
title_full |
An extensive reef system at the Amazon River mouth |
title_fullStr |
An extensive reef system at the Amazon River mouth |
title_full_unstemmed |
An extensive reef system at the Amazon River mouth |
title_sort |
An extensive reef system at the Amazon River mouth |
author |
Moura, Rodrigo Leão de |
author_facet |
Moura, Rodrigo Leão de Amado-Filho, Gilberto Menezes Moraes, Fernando Coreixas de Brasileiro, Poliana Silva Salomon, Paulo Sergio Mahiques, Michel M. Bastos, Alex Cardoso Almeida, Marcelo G. Silva, Jomar M., Jr. Araujo, Beatriz F. Brito, Frederico P. Rangel, Thiago P. Oliveira, Braulio C. V. Bahia, Ricardo da Gama Paranhos, Rodolfo P. Dias, Rodolfo J. S. Siegle, Eduardo Figueiredo, Alberto G., Jr. Pereira, Renato Crespo Leal, Camille V. Hajdu, Eduardo Asp, Nils E. Gregoracci, Gustavo Bueno [UNIFESP] Neumann-Leitao, Sigrid Yager, Patricia L. Francini-Filho, Ronaldo Bastos Froes, Adriana Campeao, Mariana Silva, Bruno S. Moreira, Ana Paula B. Oliveira, Louisi Soares, Ana C. Araujo, Lais Oliveira, Nara L. Teixeira, Joao B. Valle, Rogerio A. B. Thompson, Cristiane C. Rezende, Carlos E. Thompson, Fabiano Lopes |
author_role |
author |
author2 |
Amado-Filho, Gilberto Menezes Moraes, Fernando Coreixas de Brasileiro, Poliana Silva Salomon, Paulo Sergio Mahiques, Michel M. Bastos, Alex Cardoso Almeida, Marcelo G. Silva, Jomar M., Jr. Araujo, Beatriz F. Brito, Frederico P. Rangel, Thiago P. Oliveira, Braulio C. V. Bahia, Ricardo da Gama Paranhos, Rodolfo P. Dias, Rodolfo J. S. Siegle, Eduardo Figueiredo, Alberto G., Jr. Pereira, Renato Crespo Leal, Camille V. Hajdu, Eduardo Asp, Nils E. Gregoracci, Gustavo Bueno [UNIFESP] Neumann-Leitao, Sigrid Yager, Patricia L. Francini-Filho, Ronaldo Bastos Froes, Adriana Campeao, Mariana Silva, Bruno S. Moreira, Ana Paula B. Oliveira, Louisi Soares, Ana C. Araujo, Lais Oliveira, Nara L. Teixeira, Joao B. Valle, Rogerio A. B. Thompson, Cristiane C. Rezende, Carlos E. Thompson, Fabiano Lopes |
author2_role |
author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author |
dc.contributor.author.fl_str_mv |
Moura, Rodrigo Leão de Amado-Filho, Gilberto Menezes Moraes, Fernando Coreixas de Brasileiro, Poliana Silva Salomon, Paulo Sergio Mahiques, Michel M. Bastos, Alex Cardoso Almeida, Marcelo G. Silva, Jomar M., Jr. Araujo, Beatriz F. Brito, Frederico P. Rangel, Thiago P. Oliveira, Braulio C. V. Bahia, Ricardo da Gama Paranhos, Rodolfo P. Dias, Rodolfo J. S. Siegle, Eduardo Figueiredo, Alberto G., Jr. Pereira, Renato Crespo Leal, Camille V. Hajdu, Eduardo Asp, Nils E. Gregoracci, Gustavo Bueno [UNIFESP] Neumann-Leitao, Sigrid Yager, Patricia L. Francini-Filho, Ronaldo Bastos Froes, Adriana Campeao, Mariana Silva, Bruno S. Moreira, Ana Paula B. Oliveira, Louisi Soares, Ana C. Araujo, Lais Oliveira, Nara L. Teixeira, Joao B. Valle, Rogerio A. B. Thompson, Cristiane C. Rezende, Carlos E. Thompson, Fabiano Lopes |
description |
Large rivers create major gaps in reef distribution along tropical shelves. The Amazon River represents 20% of the global riverine discharge to the ocean, generating up to a 1.3 x 10(6)-km(2) plume, and extensive muddy bottoms in the equatorial margin of South America. As a result, a wide area of the tropical North Atlantic is heavily affected in terms of salinity, pH, light penetration, and sedimentation. Such unfavorable conditions were thought to imprint a major gap in Western Atlantic reefs. We present an extensive carbonate system off the Amazon mouth, underneath the river plume. Significant carbonate sedimentation occurred during lowstand sea level, and still occurs in the outer shelf, resulting in complex hard-bottom topography. A permanent near-bottom wedge of ocean water, together with the seasonal nature of the plume's eastward retroflection, conditions the existence of this extensive (similar to 9500 km(2)) hard-bottom mosaic. The Amazon reefs transition from accretive to erosional structures and encompass extensive rhodolith beds. Carbonate structures function as a connectivity corridor for wide depth-ranging reef-associated species, being heavily colonized by large sponges and other structure-forming filter feeders that dwell under low light and high levels of particulates. The oxycline between the plume and subplume is associated with chemoautotrophic and anaerobic microbial metabolisms. The system described here provides several insights about the responses of tropical reefs to suboptimal and marginal reef-building conditions, which are accelerating worldwide due to global changes. |
publishDate |
2016 |
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2016 |
dc.date.accessioned.fl_str_mv |
2020-07-22T13:23:11Z |
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2020-07-22T13:23:11Z |
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Science Advances. Washington, v. 2, n. 4, p. -, 2016. |
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https://repositorio.unifesp.br/handle/11600/56079 https://dx.doi.org/10.1126/sciadv.1501252 |
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2375-2548 |
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WOS000380072100012.pdf |
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10.1126/sciadv.1501252 |
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Science Advances. Washington, v. 2, n. 4, p. -, 2016. 2375-2548 WOS000380072100012.pdf 10.1126/sciadv.1501252 WOS:000380072100012 |
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