Corals and coral reefs of Brazil

Leão, Zelinda M.A.N.; Kikuchi, Ruy Kenji Papa de; Testa, Viviane

doi:10.1016/b978-044451388-5/50003-5

Cited by 232 publications

(295 citation statements)

References 27 publications

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“…Bittencourt E-mails: abilio@pesquisador.cnpq.br / abilio@cpgg.ufba.br a region characterized by the presence of sandy beaches, are the largest and most developed coral reefs of the South Atlantic Ocean (Laborel 1969, Maida and Ferreira 1997, Castro and Pires 2001, Leão et al 2003. Figure 1 illustrates the location of the reefs and an average percentage of the shoreface reefs in each study region.…”

Section: )mentioning

confidence: 99%

“…Following the late Holocene history of seal level , Suguio et al 1985, four well-marked stages of reef growth are recognizable along the coast of Brazil: 1) reef initiation and establishment; 2) rapid upward reef accretion; 3) lateral growth of the reef framework; and 4) reef degradation. The first two stages developed during the transgressive sea, and the last two stages developed during the sea level regression (Leão et al 2003).…”

Section: The Evolution Of Shoreface Reefsmentioning

confidence: 99%

“…These reefs are located in depths less than 10 m (Castro andPires 2001, Leão et al 2003), and their distribution and morphology are controlled by the underlying substrate, such as older reefs, Precambrian bedrock and lines of Quaternary beachrock (Leão et al 1985(Leão et al , 2003.…”

Section: )mentioning

confidence: 99%

“…Others, like the Abrolhos and Parcel das Paredes reefs, in the south part of the study area, are isolated banks and coral pinnacles located from about 10 to 60 km off the coast ( Fig. 1) (Leão et al 2003).…”

Section: )mentioning

confidence: 99%

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Deficit of sand in a sediment transport model favors coral reef development in Brazil

Bittencourt¹,

Leão²,

Kikuchi³

et al. 2008

An. Acad. Bras. Ciênc.

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This paper shows that the location of the shoreface bank reefs along the northeastern and eastern coasts of Brazil, in a first order approximation, seem to be controlled by the deficit of sediment in the coastal system. The sediment transport pattern defined by a numerical modeling of wave refraction diagrams, representing circa 2000 km of the northeastern and eastern coasts of Brazil, permitted the regional-scale reproduction of several drift cells of net longshore sediment transport. Those drift cells can reasonably explain the coastal sections that present sediment surplus or sediment deficit, which correspond, respectively, to regions where there is deposition and erosion or little/no deposition of sand. The sediment deficit allows the exposure and maintenance of rocky substrates to be free of sediment, a favorable condition for the fixation and development of coral larvae.

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Section: )mentioning

confidence: 99%

Section: The Evolution Of Shoreface Reefsmentioning

confidence: 99%

Section: )mentioning

confidence: 99%

Section: )mentioning

confidence: 99%

See 2 more Smart Citations

Deficit of sand in a sediment transport model favors coral reef development in Brazil

Bittencourt¹,

Leão²,

Kikuchi³

et al. 2008

An. Acad. Bras. Ciênc.

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“…Com exceção do recife das Pinaúnas e do recife da praia da Boa Viagem, os quais podem ser classificados como recifes em franja, os demais recifes da BTS não se enquadram nestes três principais tipos de recifes e poucos apresentam as quatro zonas recifais. Eles são bancos recifais rasos, estreitos e muitos deles adjacentes à linha de costa (Leão et al, 2003). Os recifes da BTS constituem dois grupos distintos: os recifes internos, localizados dentro da baía e os recifes externos, localizados na entrada da baía em regime de mar aberto.…”

Section: Recifes De Corais Na Bt Sunclassified

Baía de todos os santos: aspectos oceanográficos

Andrade¹,

Hatje²

2009

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Este livro agrega informações que subsidiam o entendimento da oceanografia da Baía de Todos os Santos. Propicia o embasamento científico para a interpretação de sua situação atual com vistas ao planejamento de futuros projetos de pesquisa e de ações gerenciais que venham a garantir a recuperação e a preservação de sua riqueza natural, como recifes de corais, estuários, manguezais, bem como a promoção da qualidade de vida das populações do Recôncavo Baiano.

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El Niño, Sea Surface Temperature Anomaly and Coral Bleaching in the South Atlantic: A Chain of Events Modeled With a Bayesian Approach

2018

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Coral bleaching represents one of the main climate‐change related threats to reef ecosystems. This research represents a methodological alternative for modeling this phenomenon, focused on assessing uncertainties and complexities with a low number of observations. To develop this model, intermittent reef monitoring data from the largest reef complex in the South Atlantic collected over nine summers between 2000 and 2014 were used with remote sensing data to construct and train a bleaching seasonal prediction model. The Bayesian approach was used to construct the network as it is suitable for hierarchically organizing local thermal variables and combining them with El Niño indicators from the preceding winter to generate accurate bleaching predictions for the coming season. Network count information from six environmental indicators was used to calculate the probability of bleaching, which is mainly influenced by the combined information of two thermal indices; one thermal index is designed to track short period anomalies in the early summer that are capable of triggering bleaching (SST of five consecutive days), and the other index is responsible for tracking the accumulation of thermal stress over time, an index called degree heating trimester (DHT). In addition to developing the network, this study conducted the three tests of applicability proposed for model: 1‐ Perform the forecast of coral bleaching for the summer of 2016; 2‐ Investigate the role of turbidity during the bleaching episodes; and 3‐ Use the model information to identify areas with a lower predisposition to bleaching events.

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Corals and coral reefs of Brazil

Cited by 232 publications

References 27 publications

Deficit of sand in a sediment transport model favors coral reef development in Brazil

Deficit of sand in a sediment transport model favors coral reef development in Brazil

Baía de todos os santos: aspectos oceanográficos

El Niño, Sea Surface Temperature Anomaly and Coral Bleaching in the South Atlantic: A Chain of Events Modeled With a Bayesian Approach

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