Controls on Temporal and Spatial Variation of Nutrients in a Tropical Marine Artificial Reef: The Case of the Victory 8B on the Southeastern Brazilian Coast

Costa, Eduardo Schettini; Andrade, Rafael; Bazoni, Luciano; Gaigher, L. P.; Oliveira, C. M. S.; Dias, Camilo; Neto, Renato Rodrigues

doi:10.5935/1984-6835.20140051

Cited by 3 publications

(10 citation statements)

References 9 publications

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“…In accordance with this, older nodules in ACS show a more compact and denser structureless mass than do younger ones. More rapid burial prevents strong destruction of the rhodolith framework by intense bioerosion in SES, where productivity is similar to that in ACS (Costa et al 2014).…”

Section: Internal Structurementioning

confidence: 92%

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Burial Rate Determines Holocene Rhodolith Development on the Brazilian Shelf

Brasileiro

Braga

Amado‐Filho

et al. 2018

Palaios

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The structure and composition of rhodoliths in two regions of the Brazilian shelf, Abrolhos Continental Shelf (ACS) and South Esp´ırito Santo State (SES) were examined and compared. Rhodoliths were sampled at depth ranges of 10-20 m and 50-60 m in SES, and 20-30 m and 50-75 m in ACS. Rhodoliths in SES are algal boundstones, built mainly of melobesioid corallines, with subordinate bryozoans and encrusting foraminifers. They show high porosity and the sediment infill of borings and voids contains a relatively high amount of siliciclastics (up to 8%). Rhodoliths from ACS are formed by a structureless carbonate mass covered by a thin veneer of encrusting coralline algae. The massive interior was produced by multiphase boring and infilling of an original boundstone. The infillings consist of a micritic matrix with bioclasts and low amounts of siliciclastic grains. Coralline assemblages are reduced to fragments of thin crusts. Rhodoliths from shallow depths are small (, 8 cm) whereas rhodoliths from the deeper zone have a wide size range (1 to 17 cm). The innermost parts of deeper rhodoliths in ACS yield radiocarbon ages of ~ 7,000 years BP (75 m) and ~ 2,000 years BP (65 m). Rhodoliths from the deep zone in SES are younger (less than 700 years BP). Siliciclastic sediment influx reaching rhodolith beds promotes burial of rhodoliths, determining the small size of shallow SES rhodoliths and the relatively young ages of the deeper ones. Scarce siliciclastic influx at the ACS rhodolith beds favors long residence times of rhodoliths on the seafloor, resulting in a thorough destruction of the original coralline/invertebrate boundstone by bioerosion.Despite the increasing knowledge about Brazilian rhodoliths in the last decade, little is known about their inner arrangement and composition (Leal et al. 2012; Tamega et al. 2014; Vale et al. 2018). The taxonomic composition, morphology, inner structure, and interactions of coralline algae with other encrusting groups (such as bryozoans, corals, and serpulids) are relevant for understanding the factors that control long-term development of rhodoliths (Adey and MacIntyre 1973; Aguirre et al. 2012) and to reconstruct the paleoenvironments in which they grew (Bosence 1983a;

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Section: Internal Structurementioning

confidence: 92%

“…Sea surface temperatures range from 24 to 288C, but during deep-water intrusion, bottom temperature can descend to 16.58C on the shelf (Paloczy et al 2016). Chlorophyll a measured during two years in an area situated 40 km north of studied sites at SES ranges from 0.11 to 1.55 lg/l (average 0.47 lg/l) (Costa et al 2014).…”

Section: Introductionmentioning

confidence: 95%

Burial Rate Determines Holocene Rhodolith Development on the Brazilian Shelf

Brasileiro

Braga

Amado‐Filho

et al. 2018

Palaios

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“…This document specifies that the approval of MAR installation depend on artisanal fishermen's interests. In Brazil, the use of MARs is recent, but it is increasing due to the participation of research institutions and nongovernmental organizations (NGOs), with the help of environmental agencies for their implementation (Costa et al, 2014). Currently, there are several MARs along the Brazilian coast in the states of Bahia (12°52'S -38°45'W), Rio de Janeiro (22°54'S -43°12'W) and Paraná (25°30'S -48°30'W) (Lima et al, 2018;2020;Alegretti et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

“…Originally from Greece, this ship was used by the merchant navy between 1975 and 1996 and is 89.7 m long and 13.6 m wide. The vessel was seized in 1997 by the customs authorities at the port of Vitória (the capital of the state) (Padilha and Henkes, 2012;Abreu et al, 2021) and became a potential pollution risk to the region after some years because of its load (Costa et al, 2014). It was donated to Guarapari in 2002 for MAR implementation, with the main goal of reducing the impacts of predatory and sport fisheries that are common around the islands in the region (Costa et al, 2014;Abreu et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Marine artificial reef (MAR) interference in artisanal fisheries in Brazil: use of traditional knowledge

et al. 2022

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The aim of this study was to describe the traditional knowledge from artisanal fishermen related to marine artificial reef (MAR) ship Victory 8B and to identify possible changes in the fishery area after its installation. We performed single ethnographic interviews (n = 80) through a semistructured questionnaire, using participant observation, visual ethnography, and field diary recordings. All the interviewees were men from 27 to 77 years old, with low education levels and up to 60 years of experience in the fishery artisanal. Most of the interviewees (n = 71; 88.7%) recognize the presence of this MAR in the region and its role as a shelter for marine fauna and an attractor for species with commercial value. Even with fishery prohibition in the vicinity of MAR Victory 8B, most of the interviewees (n = 75; 93.7%) reported the practice in that area. According to the fishermen, the ship installation did not alter area the fishery, but the structure positively changed the activity by attracting more fish, increasing capture and profits. With that, from the perspective of the fishermen perception, MAR Victory 8B fulfilled its role in the enrichment of the fish stock and the conservation of marine biodiversity in the region.

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“…município de Guarapari essa atividade é praticada durante todo o ano, ao longo da costa, principalmente na região que abarca as ilhas rochosas (Três Ilhas, Ilhas Rasas, Ilha Escalvada), o RAM Victory 8-B e o navio naufragado Bellucia. Esses locais apresentam habitat para inúmeras espécies que chama atenção de pescadores artesanais em busca de pescado para subsistência e This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License comercialização(COSTA et al, 2014) e de praticantes da pesca esportiva e mergulho. As embarcações rústicas e de pequeno porte utilizadas na pesca artesanal impedem a navegação em áreas distantes do litoral e permitem o armazenamento e conservação do pescado em geladeiras e/ou isopores apenas por poucas horas(MARTINS et al, 2009).…”

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Interferência do turismo na pesca artesanal: uma abordagem da oceanografia socioambiental no sudeste do Brasil

Abreu

Oliveira²,

Zappes

2021

Rev. Geogr. (Recife, Online)

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O objetivo deste estudo é descrever a percepção de pescadores artesanais do município de Guarapari, Espírito Santo em relação à interferência do turismo de pesca esportiva e mergulho sobre a pesca artesanal. Entrevistas etnográficas foram realizadas com 80 pescadores artesanais por meio de questionário semi-estruturado, e sendo aplicados os métodos de observações participante e direta, e uso do diário de campo. Para a análise foram aplicadas as técnicas de Análise de Discurso e Triangulação e estatística descritiva básica. Todos os entrevistados são homens com idade entre 27 e 77 anos e com baixa escolaridade. Dentre os entrevistados, 56 (70%) atuam como guia de turismo informal junto aos turistas de pesca esportiva e mergulho. Na percepção dos entrevistados (n = 37; 46,2%) o turismo de pesca esportiva e mergulho interfere negativamente na atividade, em que justificam que há uma sobreposição de uso de área entre pescadores e turistas/excursionistas. Tal cenário indica a instabilidade financeira da pesca artesanal e a necessidade de ações de gestão social a fim de garantir a prática da atividade e do turismo de pesca esportiva e mergulho na região.

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Controls on Temporal and Spatial Variation of Nutrients in a Tropical Marine Artificial Reef: The Case of the Victory 8B on the Southeastern Brazilian Coast

Cited by 3 publications

References 9 publications

Burial Rate Determines Holocene Rhodolith Development on the Brazilian Shelf

Burial Rate Determines Holocene Rhodolith Development on the Brazilian Shelf

Marine artificial reef (MAR) interference in artisanal fisheries in Brazil: use of traditional knowledge

Interferência do turismo na pesca artesanal: uma abordagem da oceanografia socioambiental no sudeste do Brasil

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