Benthic communities of shallow-water reefs of Abrolhos, Brazil

Villaça, Roberto Campos; Pitombo, Fábio Bettini

doi:10.1590/s1413-77391997000100004

Cited by 58 publications

(58 citation statements)

References 8 publications

(8 reference statements)

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“…Similarly to what was found in previous studies in the northeastern Brazilian coast, Ochrophyta were the most abundant macroalgae in the TSB (Coutinho et al 1993, Amado Filho et al 1997a, Villaça & Pitombo 1997, Muñoz & Pereira 1998, Figueiredo 2000, Costa Jr. et al 2002, Villaça 2002, Paula et al, 2003.…”

Section: Discussionsupporting

confidence: 84%

“…This is one of the most commonly found calcified algae found in coral reefs of the Brazilian northeastern coast (Leão 1982, Carvalho 1983, Martins et al 1991, Coutinho et al 1993, Villaça & Pitombo 1997, Costa Jr. et al 2002, besides being one of the most common taxa found in coral reefs (Lirman 2001) and one of the most important sources of carbonates to the reef systems (Adey 1998, Villaça 2002.…”

Section: Discussionmentioning

confidence: 99%

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Subtidal benthic marine algae of the Todos os Santos Bay, Bahia State, Brazil

et al. 2008

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The Todos os Santos bay is a Brazilian coastal marine area that was appointed as top priority for biological conservation. However, there are still too few studies about the local composition of marine communities. The aim of the present investigation was to survey the diversity of marine algae in the sub-tidal zone around the reefs of the Todos os Santos bay. Samples from seven different sites in the bay were obtained by scuba diving through qualitative and quantitative methods, being the collections repeated in rainy and dry seasons. One-hundred and forty-two taxa were found: 31 Chorophyta, 27 Ochrophyta, 83 Rhodophyta, and one Macrophyte. Higher diversity and evenness indices were found during the dry season. Sargassum spp., Dictyopteris delicatula, and Halimeda opuntia were the most abundant macroalgae in the bay. Greatest number of species and most abundant samples were obtained in the oceanic region of the bay, while fewer species and less abundant samples were obtained in areas that are more exposed to the effects of human disturbance. The composition of the flora and abundance of macroalgae in each area of Todos os Santos bay seem to be determined by the quality of local seawater (i.e. degree of eutrophication). Keywords: Macroalgae, tropical bay, reef formation, eutrophication. RESUMO ALGAS MARINHAS BENTÔNICAS DO INFRALITORAL DA BAÍA DE TODOS OS SANTOS (BAHIA, BRASIL). Apesar da Baía de Todos os Santos (BTS) ser considerada uma área de extrema importânciabiológica para a conservação da zona costeira brasileira, poucos estudos sobre as comunidades marinhas de seus ecossistemas foram realizados até o momento. Neste sentido, o objetivo deste trabalho é o de caracterizar a diversidade de algas marinhas do sub-litoral das formações recifais da BTS. Dois tipos de amostragem foram realizados: uma qualitativa e outra quali-quantitativa em sete locais de coleta. Foram identificados 142 táxons, sendo 31 Chlorophyta, 27 Ochrophyta e 83 Rhodophyta, e uma fanerógama marinha. Foi observada uma tendência a maiores valores de diversidade e equitabilidade na época seca. Sargassum spp., Dictyopteris delicatula e Halimeda opuntia foram os táxons que mais contribuíram para a abundância de macroalgas na BTS. O maior número de táxons e os maiores valores de biomassa foram encontrados em local voltado para o mar aberto, enquanto que, os menores valores foram encontrados em locais com algum tipo de distúrbio antrópico. A distribuição da flora e da abundância de macroalgas da BTS é determinada pela condição de eutrofização de cada um dos locais estudados. Palavras-chave: Macroalga, baía tropical, formação recifal, eutroficação. 5.indd 2293/11/2008 15:36:18

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Section: Discussionsupporting

confidence: 84%

Section: Discussionmentioning

confidence: 99%

Subtidal benthic marine algae of the Todos os Santos Bay, Bahia State, Brazil

et al. 2008

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“…At approximately 17ºS, the continental shelf widens to form the Abrolhos Bank on which the richest and best known coral reefs of the eastern Brazilian region are located (HARTT, 1870;LABOREL, 1970, LEÃO, 1983LEÃO et al 1988, LEÃO et al, 1996, 1999GINSBURG, 1997;PITOMBO, 1997;PITOMBO et al, 1988;KIKUCHI, 2001;LEÃO et al, 2003LEÃO et al, , 2006FOURNIER, 2007;LEÃO et al, 2008;FRANCINI-FILHO et al, 2008among others). These reefs form the following two arcs: the coastal arc composed of bank reefs of various shapes and dimensions and the outer arc eastward of the islands of the Abrolhos Archipelago, which is formed by isolated "chapeirões" in water deeper than 20 m. Incipient fringing reefs border the shores of the five islands that compound the archipelago (Figures 9 and 10).…”

Section: Major Coral Reef Types and Their Distributionmentioning

confidence: 99%

Brazilian coral reefs in a period of global change: A synthesis

et al. 2016

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Brazilian coral reefs form structures significantly different from the well-known reef models, as follows: (i) they have a growth form of mushroomshaped coral pinnacles called "chapeirões", (ii) they are built by a low diversity coral fauna rich in endemic species, most of them relic forms dating back to the Tertiary, and (iii) the nearshore bank reefs are surrounded by siliciclastic sediments. The reefs are distributed in the following four major sectors along the Brazilian coast: the northern, the northeastern and the eastern regions, and the oceanic islands, but certain isolated coral species can be found in warmer waters in embayments of the southern region. There are different types of bank reefs, fringing reefs, isolated "chapeirões" and an atoll present along the Brazilian coast. Corals, milleporids and coralline algae build the rigid frame of the reefs. The areas in which the major coral reefs occur correspond to regions in which nearby urban centers are experiencing accelerated growth, and tourism development is rapidly increasing. The major human effects on the reef ecosystem are mostly associated with the increased sedimentation due to the removal of the Atlantic rainforest and the discharge of industrial and urban effluents. The effects of the warming of oceanic waters that had previously affected several reef areas with high intensity coral bleaching had not shown, by the time of the 2010 event, any episodes of mass coral mortality on Brazilian reefs. AbstrActDescriptors: Coral reefs, Global changes, Coral bleaching, Endemic fauna.Os recifes de coral do Brasil formam estruturas significativamente diferentes dos modelos conhecidos: (i) possuem uma forma de crescimento de pináculos coralíneos em forma de cogumelo, chamados "chapeirões", (ii) são construídos por uma fauna coralínea com baixa diversidade e rica em espécies endêmicas, sendo grande parte destas formas relíquias do período Terciário e (iii) os recifes costeiros estão num ambiente dominado por sedimentos siliciclásticos. Os recifes estão distribuídos em quatro áreas ao longo da costa brasileira: regiões norte, nordeste, leste, e nas ilhas oceânicas, mas espécies isoladas de coral podem ser encontradas em águas mais quentes nas enseadas da região sul. Diferentes tipos de banco recifais, recifes em franja, "chapeirões" isolados e um atol estão presentes ao longo da costa brasileira. Corais, milleporídeos e algas coralinas incrustantes constroem a estrutura rígida dos recifes. As áreas em que ocorrem os maiores recifes de coral correspondem às regiões nas proximidades de centros urbanos que estão experimentando crescimento acelerado e rápido desenvolvimento do turismo. Os principais efeitos antropogênicos sobre o ecossistema recifal estão associados, essencialmente ao aumento da sedimentação devido à remoção da mata atlântica e as descargas de efluentes industriais e urbanos. Os efeitos do aquecimento das águas oceânicas que vem afetando várias áreas de recifes, com alta intensidade de branqueamento de coral, não causaram mortalidade em massa ...

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“…Due to its high abundance, colour pattern and large size, it is one of the most conspicuous and recognizable species of the family Pomacanthidae in the Caribbean (DELOACH, 1999 (FERREIRA et al, 2004). In the South-western Atlantic, juveniles of P. paru have been reported as fish cleaners in Abrolhos, North-eastern Brazilian coast (SAZIMA et al, 1999), but a great diversity of sponges was also detected in their gut contents in Salvador, Bahia State (ANDRÉA et al, 2007) PITOMBO, 1997;MORAES et al, 2003;CREED;OLIVEIRA, 2007). Samples were collected in two large tidal pools at Atol das Rocas (Barretinha and Barreta Falsa), one fringing reef in Abrolhos (Portinho Sul), and one rocky coast on Ilha Grande (Lagoa Verde) (Fig.…”

mentioning

confidence: 99%

“…This variation appears to be related to the differences in local food availability (VERDÍN et al, 2010). In Brazil, algae are the most abundant organisms on the shallow reefs of Atol das Rocas and Abrolhos (KIKUCHI; LEÃO, 1997;MORAES et al, 2003;VILLAÇA;PITOMBO, 1997), where they are the main food of the French angelfish. The low similarity in qualitative composition of the diet between the three sites further supports the idea that diet composition is correlated to the composition of the benthic community, which varies in different localities.…”

mentioning

confidence: 99%