Foraminíferos bentônicos na plataforma continental da Bacia de Campos

Disaró, Sibelle Trevisan; Aluizio, Rodrigo; Ribas, Elis Regina; Pupo, Daniel Vicente; Tellez, Ingrid Rodriguez; Watanabe, Silvia; Totah, Violeta; Koutsoukos, Eduardo A. M.

doi:10.1016/b978-85-352-7263-5.50004-7

Cited by 5 publications

(2 citation statements)

References 84 publications

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“…Sampling, for example, is often conducted by environmental agencies according to officially regulated procedures (Gubitoso et al, 2008;Teodoro et al, 2009), which are not always prone to follow detailed protocols or modify theirs. Many foraminiferal biomonitoring studies are carried out using grab as sampling device (Barbosa and Suguio, 1999;Gubitoso et al, 2008;Teodoro et al, 2009;Eichler et al, 2015;Laut et al, 2016); some others employed bottom samplers opening on top or adapted equipment such as the mega van Veen with upper openings that has the functionality and efficiency of a typical box corer, capable of penetrating coarser sediment bottoms (Disaró et al, 2006(Disaró et al, , 2017Ribeiro-Ferreira et al, 2017). Depending on the sampling device and due to the use of samples for multiple variables/studies, the volume of sediment for foraminiferal analysis commonly does not reach 50 cm 3 .…”

Section: Challengesmentioning

confidence: 99%

“…Nevertheless, when executing the flotation step, it is worth to mention the need for revising the sediment residue, especially for samples collected in highly hydrodynamics environments. Studies carried out on living foraminifera in the southeastern Brazilian continental margin revealed the presence of many attached and encrusting foraminifera in the sunk fraction, which must be included to better evaluate the density and biomass of these organisms (Disaró et al, 2017). Parent et al (2018) put forward an optimized method (sodium polytungstate, SPT) to concentrate living benthic foraminifera that works well in sandy substrate.…”

Section: Challengesmentioning

confidence: 99%

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Opportunities and challenges in incorporating benthic foraminifera in marine and coastal environmental biomonitoring of soft sediments: from science to regulation and practice

Sousa

Yamashita

Semensatto

et al. 2020

J. Sediment. Environ.

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Scientific studies have demonstrated the usefulness of benthic foraminifera as bioindicators to assess the health of marine, coastal, and transitional ecosystems. Similar to macrofauna, these organisms are reliable proxies for biomonitoring. Despite recent scientific advances, Brazilian official monitoring plans using biotic indices on coastal and ocean environments with soft sediment areas remain mostly restricted to a few types of organisms. Therefore, to include benthic foraminifera in Brazilian biomonitoring routines regulated by national environmental guidelines and standards, the paper presents the challenges, which must be overcome, some recommendations and steps to move forward to implement foraminifera as bioindicators in biomonitoring routines. In light of it, it is essential to consider the contribution of the Brazilian foraminiferal research in this implementation process, improving ecological quality indices, adapting methods, and applying genetics tools. This paper is a step in this direction, which aims to strengthen the role of benthic foraminifera as a reliable tool in Brazilian biomonitoring.

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Section: Challengesmentioning

confidence: 99%

Section: Challengesmentioning

confidence: 99%

Opportunities and challenges in incorporating benthic foraminifera in marine and coastal environmental biomonitoring of soft sediments: from science to regulation and practice

Sousa

Yamashita

Semensatto

et al. 2020

J. Sediment. Environ.

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Evolution of the Paraíba do Sul Deltaic Complex (SE Brazil) based on benthic foraminiferal biofacies succession

Gasparini

Silveira

Vilela

2020

J. Sediment. Environ.

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Species richness of living foraminifera in Sepetiba Bay (SE Brazil): a species checklist

Soares,

Alves Martins,

Castelo

et al. 2024

J. Sediment. Environ.

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There is a gap in knowledge about the biodiversity of living foraminifera (protozoa) in Brazil, particularly in coastal environments. In Sepetiba Bay (SE Brazil), a coastal system highly impacted by anthropogenic activities, several previous studies have been carried out on foraminifera based on total (living + dead) assemblages and sub-fossil records. Thus, this study intends to analyze for the first time the species richness of living foraminifera (stained with Rose Bengal) in Sepetiba Bay. Based on the morphological characteristics, 214 living species were identified in 50 samples collected in Sepetiba Bay in May 2022. The number of living specimens was counted as 6548. Living foraminifera density was < 252 specimens per gram of sediment and the species richness (S) ranged from 15 to 61 (mean 16.9 ± 15.5) in the analyzed stations. The main taxonomic classes found were Globothalamea and Tubothalamea. The main Globothalamea taxa belonged to the genus Ammonia, with Ammonia tepida, Ammonia buzasi, and Ammonia rolshauseni standing out, as well as the Bolivina, Buliminella, and Elphidium, represented mainly by Bolivina striatula, Buliminella elegantissima, and Elphidium excavatum. A non-Metric Multidimensional Scaling (nMDS) and cluster analysis based on a presence-absence matrix and Bray–Curtis similarity index allowed the identification of two main groups of stations: 1. Located in the innermost areas of Sepetiba Bay and surrounding the mainland and Marambaia Barrier Island, at shallower depths, with lower diversity; 2. an outermost group of stations with higher diversity in areas with greater oceanic influence. Compared with previous studies, the results of this work suggest an enlargement of the “innermost” zone with less diversity towards the oceanic region of Sepetiba Bay. This work shows that even using a matrix of presence/absence of living foraminifera and species richness, it is possible to distinguish environments in coastal systems. Data based on the living foraminifera is needed to understand current biodiversity to better characterize coastal environments and carry out biomonitoring studies.

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Foraminíferos bentônicos na plataforma continental da Bacia de Campos

Cited by 5 publications

References 84 publications

Opportunities and challenges in incorporating benthic foraminifera in marine and coastal environmental biomonitoring of soft sediments: from science to regulation and practice

Opportunities and challenges in incorporating benthic foraminifera in marine and coastal environmental biomonitoring of soft sediments: from science to regulation and practice

Evolution of the Paraíba do Sul Deltaic Complex (SE Brazil) based on benthic foraminiferal biofacies succession

Species richness of living foraminifera in Sepetiba Bay (SE Brazil): a species checklist

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