The Abrolhos Reefs of Brazil

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

doi:10.1007/978-3-662-04482-7_7

Cited by 66 publications

(39 citation statements)

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“…The removal of herbivores by fishing is partly responsible for the phase change of many Caribbean reefs from coral dominated to algal dominated (Hughes 1994). For instance, Francini-Filho & Moura (2008) suggested that due to collapse of traditional resources such as serranids and lutjanids, fishing of parrotfish (Labridae-Scarinae and Sparisomatinae) has increased significantly in the largest reef complex of the South Atlantic Ocean, Abrolhos Bank (Leão & Kikuchi 2001, Leão et al 2003. Lowry & Suthers (2004) showed clearly that spearfishing may have a significant impact on resident populations of long-lived fish species.…”

Section: Discussionmentioning

confidence: 99%

Reef fishes captured by recreational spearfishing on reefs of Bahia State, northeast Brazil

et al. 2012

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Reef fishes captured by recreational spearfishing on reefs of Bahia State, northeast Brazil. Biota Neotrop. 12(1): http:// www.biotaneotropica.org.br/v12n1/en/abstract?article+bn02012012012Abstract: Although recreational spearfishing is a growing activity, its impacts are poorly understood. This paper aims to present data on reef fishes captured by recreational spearfishing in the Bahia State, Northeastern Brazil. We analyzed 168 photos of spearfishing conducted in the reefs of this region between 2006 and 2008. A total of 1.121 fish belonging to 48 species were captured in three sub-regions of the Bahia coastline: Litoral Norte (LN), Salvador (SSA) and Baixo Sul (BS). The main species caught were: Scomberomorus brasiliensis (n = 191), Sphyraena barracuda (n = 153), Lutjanus jocu (n = 150) and Caranx bartholomaei (n = 141); these four species represented 56.5% of total captures. Over the sampling period, the highest values of catch rates per day were observed at BS, followed by SSA and LN. There were significant between-sites differences in the number of fish in the number of species caught. However, there were no significant between-years differences in the number of fish and numbers of species caught. The trophic classification of fish showed that carnivores (n = 623) were more frequently captured, followed by piscivores (n = 371), herbivores (n = 101) and invertivores (n = 26). The results showed that high sized, top predatory fishes, were the main targets, although other trophic levels were also captured. e Caranx bartholomaei (n = 141); estas quatro espécies representaram 56,5% do total de peixes capturados. Ao longo dos anos amostrados, foram registradas taxas mais elevadas de captura por dia em BS, seguido pelo SSA e LN. Foram encontradas diferenças significativas entre os locais estudados para a quantidade de peixes e o número de espécies capturadas. Entretanto, não foram encontradas diferenças significativas entre os anos para a quantidade de peixes e número de espécies capturadas. A classificação trófica de peixes mostrou que os carnívoros (n = 623) foram mais frequentemente capturados, seguidos de piscívoros (n = 371), herbívoros (n = 101) e invertívoros (n = 26). Os dados apresentados demonstram que grandes peixes predadores de topo são o alvo principal, no entanto outros níveis tróficos também são capturados. Palavras-chave: sobrepesca, recifes de coral, Salvador, Litoral Norte, Baixo Sul. Data AnalysisEach photograph corresponded to one fishery, and was considered as an independent sample. Spatial and temporal variations in total capture and richness (total number of species) were evaluated with nonparametric analysis of variance (Kruskall-Wallis test). Whenever differences were detected in the parameters, the Dunn's test was applied to the data in order to quantify and establish those differences.

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Section: Discussionmentioning

confidence: 99%

Reef fishes captured by recreational spearfishing on reefs of Bahia State, northeast Brazil

et al. 2012

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“…This area is located in an extensive shallow continental shelf that presents relatively turbid waters due to continental drainage and the high sedimentation rates caused by human activities (Coutinho et al 1993, Leão & Kikuchi 2001. These characteristics support the hypothesis that A. moricandi t possibly prefers turbid waters, but not necessarily avoids coastal insular conditions.…”

Section: Resultsmentioning

confidence: 59%

“…These characteristics support the hypothesis that A. moricandi t possibly prefers turbid waters, but not necessarily avoids coastal insular conditions. However, between the Abrolhos Archipelago and the Bahia coast there is a very large development of stone steps and coral growth (mainly the Brazilian endemic species Mussismilia braziliensis) (Leão & Kikuchi 2001), which probably helped the colonisation of more distant areas. The factors that favour the settlement and future establishment of A. moricandi populations, such as reef topography, food availability, water and habitat characteristics demand further studies.…”

Section: Resultsmentioning

confidence: 99%

What do we know about Anisotremus moricandi (Teleostei: Haemulidae), an endangered reef fish?

Dias

2007

Biota Neotrop.

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This article provides general information on habitat, behavior, and conservation status of Anisotremus moricandi and reinforces its distribution to the western Atlantic. The species inhabits rocky reefs with low coralline overgrowth and it is found in reef crevices in small groups or solitary individuals. The distribution of A. moricandi seems to be discontinuous occurring in the coasts of Panama (Caribbean side), Aruba, Colombia, Orchila Island (Venezuela) and in Brazil (from Ceará State to Espírito Santo State).

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“…The tropical region is mainly influenced by the Brazilian Current; it is responsible for the high temperatures of the surface seawater and contains the largest mesophotic reefs in the southern Atlantic as well as rhodolith beds and unconsolidated sediments (LEÃO et al, 2013). The Abrolhos Archipelago, which comprises five small islands with small fringing reefs, is located 65 km off the southern coast of Bahia state, Brazil, and is part of a marine protected area, the Abrolhos Marine National Park (LEÃO; KIKUCHI, 2001). The shallow, soft-bottomed marine communities near the coral reefs of the Abrolhos archipelago are dominated by macrophytes comprising algae and the seagrasses Halodule wrightii and Halophila decipiens (CREED; AMADO, 1999;DE PAULA et al, 2003).…”

Section: Trichechus Manatus)mentioning

confidence: 99%

Seagrass and Submerged Aquatic Vegetation (VAS) Habitats off the Coast of Brazil: state of knowledge, conservation and main threats

et al. 2016

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Financial Support: This study was supported by the Brazilian Network for Coastal Benthic Studies -ReBentos (Programa SISBIOTA), Rede CLIMA and INCT for Climate Changes; sponsored by CNPq and FAPESP. Seagrass meadows are among the most threatened ecosystems on earth, raising concerns about the equilibrium of coastal ecosystems and the sustainability of local fisheries. The present review evaluated the current status of the research on seagrasses and submerged aquatic vegetation (SAV) habitats off the coast of Brazil in terms of plant responses to environmental conditions, changes in distribution and abundance, and the possible role of climate change and variability. Despite an increase in the number of studies, the communication of the results is still relatively limited and is mainly addressed to a national or regional public; thus, South American seagrasses are rarely included or cited in global reviews and models. The scarcity of large-scale and long-term studies allowing the detection of changes in the structure, abundance and composition of seagrass habitats and associated species still hinders the investigation of such communities with respect to the potential effects of climate change. Seagrass meadows and SAV occur all along the Brazilian coast, with species distribution and abundance being strongly influenced by regional oceanography, coastal water masses, river runoff and coastal geomorphology. Based on these geomorphological, hydrological and ecological features, we characterised the distribution of seagrass habitats and abundances within the major coastal compartments. The current conservation AbstrActPradarias de gramas marinhas e vegetação aquática submersa (VAS) estão entre os ecossistemas mais ameaçados do planeta, gerando preocupação sobre o equilíbrio dos ecossistemas costeiros e a sustentabilidade das pescarias. A presente revisão avaliou o estado do conhecimento sobre as pradarias marinhas e VAS do Brasil, considerando as respostas das plantas às condições ambientais, e o possível papel da geomorfologia costeira e variabilidade climática sobre a distribuição e abundância das populações. Apesar do crescente aumento no número de publicações, a comunicação dos resultados ainda é relativamente limitada e destina-se principalmente ao público nacional ou regional. Como resultado, as pradarias de gramas marinhas da América do Sul raramente são incluídas ou citadas em revisões e modelos globais. A escassez de estudos em larga escala e de longo prazo, permitindo a detecção de mudanças na estrutura, abundância e composição dos habitats e espécies associadas, limita a investigação das comunidades no que diz respeito aos efeitos potenciais das mudanças climáticas. Pradarias marinhas e VAS ocorrem ao longo de toda a costa brasileira, mas a distribuição e abundância das espécies são influenciadas pela oceanografia regional, massas de água costeiras, descarga de rios e geomorfologia costeira. Com base nas características oceanográficas, geomorfológicas, hidrológicas e ecológicas, o estudo discutiu a distr...

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The Abrolhos Reefs of Brazil

Cited by 66 publications

References 4 publications

Reef fishes captured by recreational spearfishing on reefs of Bahia State, northeast Brazil

Reef fishes captured by recreational spearfishing on reefs of Bahia State, northeast Brazil

What do we know about Anisotremus moricandi (Teleostei: Haemulidae), an endangered reef fish?

Seagrass and Submerged Aquatic Vegetation (VAS) Habitats off the Coast of Brazil: state of knowledge, conservation and main threats

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