Reef fish community structure on three islands of Itaipu, Southeast Brazil

Mendonça-Neto, José P.; Monteiro‐Neto, Cassiano; Moraes, Luiz Eduardo S.

doi:10.1590/s1679-62252008000200015

Cited by 14 publications

(13 citation statements)

References 49 publications

(46 reference statements)

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“…However, our results also show the effects of this transitional estuarine-marine environment on fish, since other studies support the trend in the increase of species richness for fish assemblages associated with islands along the land-ocean gradient for the coastal islands adjacent to Guanabara Bay entrance. This hypothesis can be confirmed analyzing Mendonça-Neto et al (2008), in which 42 species were recorded at three islands north the entrance of Guanabara Bay, and Rangel et al (2007) who provided a list of 99 fish species for the Cagarras Archipelago, complemented by Bertoncini et al (2013) and Monteiro-Neto et al (2013), that reported 193 and 197 species respectively, for the whole Cagarras Archipelago.…”

Section: Discussionmentioning

confidence: 79%

The rocky reef fishes of Vermelha Beach, a marine estuarine transitional zone at Guanabara Bay, Brazil

Rodrigues-Barreto

Shimada-Brotto

Guterres-Giordano

et al. 2017

lajar

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ABSTRACT. Rocky reefs are one of the most important biotopes in Guanabara Bay due to their broad distribution and high species diversity. This study aimed to describe the composition and structure of the fish assemblage associated with rocky reefs in Vermelha Beach (RJ/Brazil), an estuarine-marine transitional zone located at the entrance of Guanabara Bay. Fish were surveyed through underwater visual censuses, conducted by snorkeling divers along 10 m 2 -linear transects (n = 90). A total of 2.487 fishes were recorded belonging to 29 species in 18 families. Except for Atherinella brasiliensis, all other species are intimately associated with rocky reefs. The present work also stresses the importance of further studies to evaluate the role of periodic influences of estuarine and oceanic waters as structuring factors of the fish assemblages associated with rocky reefs at Vermelha Beach and similar ecosystems.

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Section: Discussionmentioning

confidence: 79%

The rocky reef fishes of Vermelha Beach, a marine estuarine transitional zone at Guanabara Bay, Brazil

Rodrigues-Barreto

Shimada-Brotto

Guterres-Giordano

et al. 2017

lajar

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“…To determine whether clusters retrieved from the previous analyses differed significantly, we performed a multivariate analysis of variance (MANOVA) using the two axes derived from a non‐metric multidimensional scaling (NMDS), which included the whole data set (qualitative and quantitative variables). The stress value of the analysis was 0.19, which means that the two‐dimensional representation of the data is appropriate (Mendoça‐Neto, Monteiro‐Neto & Moraes, ). These analyses were performed using the PAST software (Hammer, Harper & Ryan, ).…”

Section: Data Analysesmentioning

confidence: 99%

Study of the polymorphism of the PatagonianCalceolaria polyrhiza(Calceolariaceae) using decision tree and sequential covering rule induction

et al. 2013

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Climate and landscape changes that occurred in Patagonia during the Pleistocene presumably led to the ample biodiversity that currently characterizes the region. Many Patagonian species constitute unresolved complexes that may be related to these environmental changes. Accordingly, discriminating among taxonomic entities within an endemic and widely distributed species in Patagonia would enable a better understanding of the diversification processes that occurred in the recent past. We explored the polymorphism of Calceolaria polyrhiza, a widely distributed species for which phylogeographic studies suggest a recent diversification, with the aim of disentangling the morphological variability patterns in this species. We employed quantitative and qualitative floral and vegetative traits, including geometric morphometric variables. We used two clustering algorithms, testing for correspondence between detected clusters and the species previously described for the complex. Finally, we described these clusters using decision trees and sequential covering rule induction. Major clusters were determined, which match the previously described species. Floral traits related to corolla design and shape were the most useful characters for distinguishing groups and the variation patterns in these traits might be associated with historical and ecological factors. The need for conducting plant systematic studies using techniques that ensure objective taxonomic delimitations and descriptions is stressed. © 2013 The Linnean Society of London, Botanical Journal of the Linnean Society, 2013, 173, 487–500.

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“…Therefore, it is necessary, first, to improve our knowledge regarding the influence of different kinds of "natural" factors, such as, for example, the degree of structural complexity of coral setting. In particular, it has been argued that fish assemblages associated to tropical coral reefs exhibit close positive relationships with the degree of habitat complexity [5,9], resulting in particular from the morphology and the overall "rugosity" of the coral display [7][8][9][10][11]8,[12][13][14][15][16]9]. Hence the necessity to collect as much data as possible on this subject by accumulating dedicated case studies.…”

Section: Introductionmentioning

confidence: 99%

Influence of Coral-reef Complexity on Species Richness and the Hierarchical Structuration of Species Abundances in Reef fish Communities: A Case Study in South-east Brazil

Béguinot¹

2019

AJEE

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Growing complexity of coral habitat is expected to increase resource partitioning among co-occurring reef fish and, thereby, reduce to some extent the mean competitive intensity. This will have associated consequences on the internal structuring of species in reef fish communities, in particular regarding species richness and evenness of species abundances. Accumulating dedicated case studies are necessary, however, to get further empirical confirmations. The present analysis aims to contribute in this respect, comparing reef fish communities associated to two coral-reef settings that markedly differ in their degree of morphological complexity, at Itaipu Sound, Brazil. As the available samplings of these communities remained incomplete, numerical extrapolations were implemented, thereby providing least-bias estimates for both total species richness and the exhaustive distribution of species abundances in both compared reef fish communities. As expected, total species richness increases with greater degree of coral habitat complexity, while the unevenness of species abundances decreases. This decrease in abundance unevenness – reflecting the corresponding relaxation of the mean level of competitive intensity – is partly due to the direct, negative influence of species richness on abundance unevenness, as an overall trend. Beyond that, however, the relaxation is further strengthened by an additional “genuine” contribution – this time independent from the variation in species richness – and, as such, directly and idiosyncratically attached to the improvement in habitat complexity.

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Reef fish community structure on three islands of Itaipu, Southeast Brazil

Cited by 14 publications

References 49 publications

The rocky reef fishes of Vermelha Beach, a marine estuarine transitional zone at Guanabara Bay, Brazil

The rocky reef fishes of Vermelha Beach, a marine estuarine transitional zone at Guanabara Bay, Brazil

Study of the polymorphism of the PatagonianCalceolaria polyrhiza(Calceolariaceae) using decision tree and sequential covering rule induction

Influence of Coral-reef Complexity on Species Richness and the Hierarchical Structuration of Species Abundances in Reef fish Communities: A Case Study in South-east Brazil

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