Benthic foraminifera as proxies of pollution: The case of Guanabara Bay (Brazil)

Donnici, Sandra; Serandrei-Barbero, Rossana; Bonardi, Maurizio; Sperle, Marcelo

doi:10.1016/j.marpolbul.2012.06.024

Cited by 50 publications

(22 citation statements)

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“…Several works have been performed to study benthic foraminiferal distribution and ecology in the Guanabara Bay (Vilela et al, 2001(Vilela et al, a, b, 2003(Vilela et al, , 2004(Vilela et al, , 2011Fontana et al, 2006;Kfouri-Cardoso et al, 2006;Pereira et al, 2006;Figueira et al, 2007;Donnici et al, 2012;Eichler et al, 2013;Clemente et al, 2015) as well as in the sedimentary record to reconstruct paleoenvironmental evolution (e.g., Vilela et al, 2007;Baptista Neto et al, 2016). However, all the previous works in the Guanabara Bay have been based on total (living plus dead) benthic foraminiferal assemblages.…”

Section: The Main Goals Of This Studymentioning

confidence: 99%

“…Kfouri-Cardoso et al, 2006;Laut et al, 2012;Pereira et al, 2006;Figueira et al, 2007;Vilela et al, 2001Vilela et al, a, b, 2003Vilela et al, , 2004Vilela et al, , 2007Vilela et al, , 2011Donnici et al, 2012;Eichler et al, 2013;Clemente et al, 2015;Baptista Neto et al, 2016) as well as in other Brazilian (e.g., Brönnimann et al, 1981;Bonetti and Eichler, 1997;Raposo et al, 2016), and worldwide (Murray, 1991(Murray, , 2006Laut et al, 2014Laut et al, , 2016Martins et al, 2015Martins et al, a, b, 2016 transitional coastal environments. Laut et al (2012b) based on published works gave an overview of the main species that occur in the Guanabara Bay.…”

Section: The Benthic Foraminiferal Response To Toc Enrichment and Gasmentioning

confidence: 99%

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High-Resolution Acoustic Mapping of Gas Charged Sediments and Living Benthic Foraminifera Assemblages From the Ne Region of the Guanabara Bay (Rj, Brazil)

et al. 2016

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. High-resolution acoustic mapping of gas charged sediments and living benthic foraminifera assemblages from the NE region of the Guanabara Bay (RJ, Brazil). Journal of Sedimentary Environments, 1 (3): 360-384. AbstractThis work was performed in the NE region of the Guanabara Bay, a highly impacted Brazilian coastal system, located in Rio de Janeiro State. It aimed to: i) identify and map the areas with occurrence of gas in the sediment, as well as its acoustic signature; ii) characterize the physical properties of the sediments and; iii) document the response of microbenthic organisms (living benthic foraminifera) to changes in quantity and quality of organic matter. Seismic surveys at the frequency of 12 kHz identified a large area with about 50% gas charged sediments in the study area.The main acoustic signatures of the shallow gas were black shadow and gas blanket. In addition, features related to gas seepages to the water column (acoustic plumes and pockmarks) and gas percolation within the sediments (intrasedimentary plumes, turbidity pinnacles) were also identified. The gas has a biogenic origin and results from the high acumulation rate between 0.03 to 0.9 cm.year -1 and from the decomposition of large amount of organic matter (10-20%). Vertical distribution of gas ranges from few centimeters to 9 m below the water-sediments interface. These occurrences are related to both gas migration from lower sedimentary layers to Holocene muds above, and to recent generation in near-surface sediments as the area display favorable conditions for gas production. Cores ranging from 150-240 cm in length have predominantly muddy sediments and variations in the P-wave velocity followed the changes in sediment density, controlled mainly by the presence of gas in sediments, bioclasts accumulation, textural variation and percentage of organic matter. Journal of Sedimentary Environments

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Section: The Main Goals Of This Studymentioning

confidence: 99%

Section: The Benthic Foraminiferal Response To Toc Enrichment and Gasmentioning

confidence: 99%

High-Resolution Acoustic Mapping of Gas Charged Sediments and Living Benthic Foraminifera Assemblages From the Ne Region of the Guanabara Bay (Rj, Brazil)

et al. 2016

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“…Studies on the biodiversity of foraminifera were conducted in neighboring ecosystems of Itaipu Lagoon, such as Guanabara Bay (Eichler et al 2001;Eichler et al 2003Eichler et al , 2014Vilela et al 2004Vilela et al , 2014Santos et al 2007;Donnici et al 2012;Clemente et al 2015), Maricá Lagoon (Bomfim et al 2010) and Rodrigo de Freitas Lagoon (Vilela et al 2011). Eichler et al (2001) Santos et al (2007) from the Guanabara Bay and grouped into three assemblages.…”

Section: Discussionmentioning

confidence: 99%

“…Assemblage III, in the central part and at the bay mouth, was represented by Cribroelphidium poeyanum (d 'Orbigny 1826) and Quinqueloculina seminula (Linnaeus 1758), which were also related to polluted and stressed environments. Donnici et al (2012) identified 68 species within the combined assemblages of Guanabara Bay and found that A. tepida and B. elegantissima dominated, which showed a positive correlation to heavy metals. The study also found an area with dominance of Q. seminula associated with species of genus Elphidium, indicative of a lagoon environment with a good exchange with sea water.…”

Section: Discussionmentioning

confidence: 99%

Recent benthic foraminifera from the Itaipu Lagoon, Rio de Janeiro (southeastern Brazil)

Raposo¹,

Laut²,

Clemente³

et al. 2016

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Itaipu Lagoon is located near the mouth of Guanabara Bay and has great importance for recreation to the city of Niterói, Rio de Janeiro state, Brazil. Several studies have documented foraminiferan diversity at Guanabara Bay, but none in Itaipu Lagoon. Therefore, this study lists and provides images of foraminiferal species collected from Itaipu Lagoon. A total of 35 species belonging to 23 genera were collected, grouped in 17 families and four orders. Ammonia tepida was the species with the highest occurrence. This study represents a baseline work for future investigations.

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“…39,40 It is considered one of the most degraded ecosystems of the Brazilian coast. 41 Several studies conducted in Guanabara Bay show environmental impacts such as eutrophication, 42,43 high sedimentation rates, 44,45 high concentrations of metals, [46][47][48][49][50][51] and hydrocarbons 25,27,30,52,53 in water, sediment and biota. Among the main sources of pollution to the bay, stand out more than 14,000 industries, domestic sewage discharges with low or no treatment, 14 oil terminals, 2 harbors, 32 boatyards and more than 1000 gas stations.…”

Section: Study Area and Samplingmentioning

confidence: 99%

Compound-Specific δ13C of n-Alkanes: Clean-Up Methods Appraisal and Application to Recent Sediments of a Highly Contaminated Bay

Ceccopieri

Scofield

Almeida

et al. 2018

J. Braz. Chem. Soc.

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Different clean-up methods to determine isotopic composition of n-alkanes were tested. Sources of organic matter in Guanabara Bay were re-examined through the δ 13 C of individual n-alkanes in surface sediment samples. The n-alkanes were efficiently isolated without significant losses of the compounds of interest. The δ 13 C of n-alkanes (n-C 17 to n-C 35 ) ranged between -34.0 and -26.4‰. More depleted δ 13 C values associated to higher carbon preference index (CPI > 4) suggest prevalence of biogenic n-alkanes from terrestrial origin in the inner stations influenced by inputs from mangrove areas. Small isotopic differences between odd and even-numbered chains and 13 C-enrichment in long-chain homologues indicate a petrogenic hydrocarbons contribution. Higher concentrations of short-chain compounds associated to a more 13 C-enriched total organic carbon (TOC) were found near the most intense sewage discharges. Results show that δ 13 C of n-alkanes can be applied to a highly degraded system as the Guanabara Bay and help improve the characterization of the organic matter. Keywords: GC-C-IRMS, UCM, urea adduction, organic matter, Guanabara Bay IntroductionThe composition and distribution of hydrocarbons in sediment samples provide information about the organic matter sources and transformation processes occurring in the environment. 1 Studies on n-alkanes have often been conducted to assess the origin of hydrocarbons, such as biogenic (marine or terrestrial) or petrogenic, found in the marine environment. The assessment makes use of the difference in the n-alkane chain length to draw conclusions on the sources of organic matter. In higher plants, for example, n-alkanes from epicuticular waxes show long chains and an odd over even-numbered carbon chain predominance. 2 Algae are characterized by shorter chain lengths with no expressive odd-over-even preference. 3 In contrast, n-alkanes in fossil fuels have a wide composition range, without predominance of odd or even-numbered chains. 4 However, despite these typical fingerprints, there are cases in which n-alkane profile of different classes of organisms overlap, resulting in ambiguous interpretations of the organic material sources. 5 Given this multiplicity of origins, an interpretation of the different sources exclusively by the concentrations of n-alkanes is very limited in more complex environments. 6 During the last decades, the carbon isotopic analysis of some biomarkers have been widely used as a valuable tool to better distinguish the sources of organic matter in marine environments. 5,[7][8][9][10][11][12][13][14] The carbon isotope composition in the biosynthesized organic material depends on both the isotopic composition of the carbon source used by organisms and the isotope discrimination that occurs during carbon fixation, which includes the steps of absorption and intracellular diffusion, and also the biosynthesis of the cell components. 15 Thus, when two classes of organisms present an overlap in the n-alkane distribution, additional information can b...

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Benthic foraminifera as proxies of pollution: The case of Guanabara Bay (Brazil)

Cited by 50 publications

References 49 publications

High-Resolution Acoustic Mapping of Gas Charged Sediments and Living Benthic Foraminifera Assemblages From the Ne Region of the Guanabara Bay (Rj, Brazil)

High-Resolution Acoustic Mapping of Gas Charged Sediments and Living Benthic Foraminifera Assemblages From the Ne Region of the Guanabara Bay (Rj, Brazil)

Recent benthic foraminifera from the Itaipu Lagoon, Rio de Janeiro (southeastern Brazil)

Compound-Specific δ13C of n-Alkanes: Clean-Up Methods Appraisal and Application to Recent Sediments of a Highly Contaminated Bay

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