Similarity Between the Dead and Living Foraminiferal Assemblages in the Ne Sector of Guanabara Bay (Brazil)

Martins, Maria Virgínia Alves; Soares-Gomes, Abı́lio; Yamashita, Cintia; Pinto, Anita Fernandes Souza; Frontalini, Fabrizio; Sequeira, Cristina; Laut, Lázaro; Belart, Pierre; Zaaboub, Noureddine; Miranda, Paulo; Sousa, Silvia Helena de Mello e; Figueira, Rubens César Lopes; Pena, Assane Luis; Terroso, Denise; Rocha, Fernando

doi:10.12957/jse.2016.26875

Cited by 9 publications

(9 citation statements)

References 55 publications

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“…Some exceptions are the works of Teodoro et al [ 25 ], Duleba & Teodoro. [ 32 ], Delavy et al [ 33 ], and Martins et al [ 34 ], [ 35 ]. Dead or total assemblages (dead+living) do not allow rigorous inferences to be made on the behavior of species as a function of seasonal environmental variables.…”

Section: Introductionmentioning

confidence: 99%

Environmental impact of the largest petroleum terminal in SE Brazil: A multiproxy analysis based on sediment geochemistry and living benthic foraminifera

et al. 2018

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The Dutos e Terminais do Centro Sul (DTCS) is one of the largest petroleum terminals of the South America located in the São Sebastião Channel (SSC) on the southeastern Brazilian coast. The aims of this study were to compare the sediment quality near the DTCS with that of several sites in the SSC region including the Araçá (AR) domestic sewage outfall and to assess the efficiency of the DTCS wastewater treatment plant. To achieve these goals, textural, geochemical, and living benthic foraminifera results were analyzed for the DTCS, AR, and SSC regions. Sediments in the DTCS area were silty with high concentrations of total organic carbon (1.7–2.4%), total nitrogen (0.2–0.3%), total sulfur (0.4–0.6%), and total (0.12–0.18%) and inorganic phosphorous (0.07–0.11%). These values were higher than those in sediments collected in the SSC and Araçá regions. The sediments’ concentrations of As, Cd, Cr, Cu, Hg, Ni, Pb, and Zn in the SSC and AR regions were lower than their corresponding probable effect levels (PELs). However, sediments near the DTCS were enriched with As, Cu, and Ni, whose concentrations exceeded their corresponding threshold effect levels (TELs). Around the DTCS outfall diffusers, living foraminiferal densities and diversities were lower than those for the other areas studied. In the DTCS area, it was necessary to search 50 to 190 cm3 of sediment to find 100 live specimens. In the SSC and Araçá areas, a maximum of 40 cm3 of sediment was enough to locate 100 live specimens. The lower density and diversity of living foraminifera around the DTCS than around the other areas illustrates the impact of the environmental stress caused by the presence of pollutants. These results indicate that the wastewater treatment plant efficiency is low and its discharge of pollutants from petrochemical waste liquids affects the benthic fauna around the DTCS in a potentially harmful manner.

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Section: Introductionmentioning

confidence: 99%

Environmental impact of the largest petroleum terminal in SE Brazil: A multiproxy analysis based on sediment geochemistry and living benthic foraminifera

et al. 2018

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“…The dissimilarity between living and dead benthic foraminiferal assemblages in the shallow coastal area of Esperance Bay could be attributed to processes of sedimentary dynamic and the instability of physicochemical parameters that are unfavorable factors for the development of large living foraminiferal communities. The relationship between dead and living assemblages has not been fully understood yet, due to the small number of investigations (Dimiza et al, 2016;Martins et al, 2016Martins et al, , 2018Martins et al, , 2019a.…”

Section: Samples For Foraminiferal Investigation Were Preserved In Etmentioning

confidence: 99%

Foraminiferal biotopes in a shallow continental shelf environment: Esperance Bay (southwestern Australia)

Buosi

Tecchiato²,

Ibba

et al. 2020

Journal of Sea Research

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The Great Australian Bight is a large carbonate cold water environment located on the central and western portions of the southern Australia. Seagrasses (Posidonia sp.) and macroalgae benthic habitats are widely distributed in the shallow water environment of southern Australia, contributing to the carbonate factory. This study investigated the distribution of modern benthic foraminiferal assemblages in the microtidal wave-dominated inner-shelf of Esperance Bay (southwestern Australia), that lies on the western margin of the Great Australian Bight. Benthic foraminifera were taxonomically identified and biotic parameters (species richness, density, Fisher-α index, Shannon-Weaver index, dominance) were calculated. Multivariate analyses (Hierarchical Cluster Analysis, Principal Component Analysis) were performed to understand foraminiferal distribution in the context of environmental conditions. Four main foraminiferal assemblages have been recognized: (I) a nearshore assemblage of dense seagrass meadow, dominated by Lamellodiscorbis dimidiatus, Elphidium craticulatum, Elphidium crispum, Cibicides lobatulus, II) a second assemblage associated with unvegetated seabed (approximately 30 m depth) with Lamellodiscorbis dimidiatus, Elphidium crispum, Quinqueloculina disparilis, III) a third assemblage in the central sector of the bay, characterized by a discontinuous and mixed seagrass-algae coverage with Lamellodiscorbis dimidiatus, Elphidium crispum, Elphidium macellum, Cibicides refulgens, and Quinqueloculina poeyana, and IV) an epiphytic assemblage of transitional zone from the coastline to the upper limit of a mixed seagrass-algae meadow, dominated by Elphidium crispum, Chrysalidinella dimorpha, Planulinoides biconcava, Planoglabratella opercularis, Rugobolivinella elegans. The spatial distribution of the four assemblages appears closely related to sediment texture, seagrass cover and depth, but it is also influenced by the shoreface morphology and the hydrodynamic energy. The understanding of the ecological parameters that influence benthic foraminiferal distribution, composition and assemblage structure within seagrass meadows is useful for paleoecological and paleoenvironmental interpretations.

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“…According to Martins et al (2016), B. elegantissima seems to prefer marine environments; it can live in transitional ecosystems in regions with good connection with marine waters. This trend was also observed by Eichler et al (2003), in Guanabara Bay (Brazil), and Paquette et al (2016) at Santa Catarina State coast (Brazil).…”

Section: Composition Of Benthic Foraminifera Assemblagesmentioning

confidence: 99%

Holocene Closure of a Barrier Beach in Sepetiba Bay and Its Environmental Impact (Rio De Janeiro, Brazil)

et al. 2017

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. Late Holocene closure of a barrier beach in Sepetiba Bay and its environmental impact (Rio de Janeiro, Brazil). Journal of Sedimentary Environments, 2 (1): 65-80. AbstractCore T4 (with 286 cm long) collected in the inner part of Sepetiba Bay is a record of late Holocene evolution of Sepetiba Bay. This core was described and sampled every 2 cm. Textural, geochemical and foraminifera data were analyzed, and two radiocarbon dates were obtained. Estimated ages indicate that core T4 represents the last ≈4,000 years calibrated before present (yrs cal BP). Results of this core suggest that coarse sediments, recorded in the period between ≈4,000-3,400 yrs cal BP, were probably associated with high hydrodynamic conditions in the study area. These sediments should be deposited at an incipient phase of the Marambaia Beach Barrier evolution. The development of this sand barrier resulted in the confinement of the inner region of Sepetiba Bay, leading to the deposition of muddy sediments rich in organic matter. Organic matter enrichment increased especially in the last ≈500 yrs cal BP. Foraminifera assemblages and carbonates content indicate that the studied region should have been affected in the last ≈3,400 yrs cal BP by changes in the water depth column. An increase of the water column depth was recorded for example between ≈850-350 yrs BP. The results obtained in the core T4 show that the confinement and eutrophication process of the internal zone of Sepetiba Bay has been occurring since ≈3,400 yrs cal BP and is being caused by other factors such as geomorphological and climatic changes and human activities.

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Similarity Between the Dead and Living Foraminiferal Assemblages in the Ne Sector of Guanabara Bay (Brazil)

Cited by 9 publications

References 55 publications

Environmental impact of the largest petroleum terminal in SE Brazil: A multiproxy analysis based on sediment geochemistry and living benthic foraminifera

Environmental impact of the largest petroleum terminal in SE Brazil: A multiproxy analysis based on sediment geochemistry and living benthic foraminifera

Foraminiferal biotopes in a shallow continental shelf environment: Esperance Bay (southwestern Australia)

Holocene Closure of a Barrier Beach in Sepetiba Bay and Its Environmental Impact (Rio De Janeiro, Brazil)

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