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Ceccopieri M, Farias CO, Araújo M, Soares MLG, Estrada GCD, Wagener A, Hamacher C. Aliphatic and polycyclic aromatic hydrocarbons in surface sediments as a tool for the assessment of the contamination status of mangrove forests in Rio de Janeiro (Brazil). Mar Pollut Bull 2023; 192:115049. [PMID: 37201352 DOI: 10.1016/j.marpolbul.2023.115049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 04/26/2023] [Accepted: 05/07/2023] [Indexed: 05/20/2023]
Abstract
The distribution of aliphatic and polycyclic aromatic hydrocarbons (PAHs) in surface sediments from mangrove forests of the Rio de Janeiro State was investigated. Ten sampling stations were selected in the mangroves of Sepetiba Bay and the Jacarepaguá Lagoon Complex (JLC), which are areas affected by multiple human activities. The total aliphatic hydrocarbons concentrations showed marked variation between samples (27-407 μg g-1), mostly related to the total organic carbon contents. The total PAHs concentration ranged between 38 and 792 ng g-1. Diagnostic indices and statistical analysis showed that the mangrove forests can be divided into three groups: the western portion of Sepetiba Bay with the lowest level of contamination; the inner portion of the bay with the most intense presence of local sources of contamination, especially of pyrolytic character; and the JLC with a greater accumulation of hydrocarbons, mainly derived from petroleum combustion, resultant from the intense urbanization.
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Affiliation(s)
- Milena Ceccopieri
- Institute of Environment, Florida International University, Biscayne Bay Campus, North Miami, FL 33181, USA; Laboratório de Geoquímica Orgânica Marinha (LAGOM), Faculdade de Oceanografia, Universidade do Estado do Rio de Janeiro, RJ 20550-013, Brazil.
| | - Cássia O Farias
- Laboratório de Geoquímica Orgânica Marinha (LAGOM), Faculdade de Oceanografia, Universidade do Estado do Rio de Janeiro, RJ 20550-013, Brazil
| | - Michelle Araújo
- Laboratório de Geoquímica Orgânica Marinha (LAGOM), Faculdade de Oceanografia, Universidade do Estado do Rio de Janeiro, RJ 20550-013, Brazil
| | - Mario L G Soares
- Núcleo de Estudos em Manguezais (NEMA), Faculdade de Oceanografia, Universidade do Estado do Rio de Janeiro, RJ 20550-013, Brazil
| | - Gustavo C D Estrada
- Núcleo de Estudos em Manguezais (NEMA), Faculdade de Oceanografia, Universidade do Estado do Rio de Janeiro, RJ 20550-013, Brazil
| | - Angela Wagener
- Laboratório de Estudos Marinhos e Ambientais (LabMAM), Departamento de Química, Pontifícia Universidade Católica do Rio de Janeiro, RJ 22451-900, Brazil
| | - Cláudia Hamacher
- Laboratório de Geoquímica Orgânica Marinha (LAGOM), Faculdade de Oceanografia, Universidade do Estado do Rio de Janeiro, RJ 20550-013, Brazil
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Santos DMC, Estrada GCD, Fernandez V, Estevam MRM, Souza BTDE, Soares MLG. First Assessment of Carbon Stock in the Belowground Biomass of Brazilian Mangroves. AN ACAD BRAS CIENC 2017; 89:1579-1589. [PMID: 28813100 DOI: 10.1590/0001-3765201720160496] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Accepted: 02/17/2017] [Indexed: 11/21/2022] Open
Abstract
Studies on belowground roots biomass have increasingly reported the importance of the contribution of this compartment in carbon stock maintenance in mangrove forests. To date, there are no estimates of this contribution in Brazilian mangrove forests, although the country has the second largest area of mangroves worldwide. For this study, trenches dug in fringing forests in Guaratiba State Biological Reserve (Rio de Janeiro, Brazil) were used to evaluate the contribution of the different classes of roots and the vertical stratification of carbon stock. The total carbon stock average in belowground roots biomass in these forests was 104.41 ± 20.73 tC.ha-1. From that, an average of 84.13 ± 21.34 tC.ha-1 corresponded to the carbon stock only in fine roots, which have diameters smaller than 5 mm and are responsible for over 80% of the total belowground biomass. Most of the belowground carbon stock is concentrated in the first 40 cm below the surface (about 70%). The root:shoot ratio in this study is 1.14. These estimates demonstrate that the belowground roots biomass significantly contributes, more than 50%, to the carbon stock in mangrove forests. And the mangrove root biomass can be greater than that of other Brazilian ecosystems.
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Affiliation(s)
- Daniel M C Santos
- Universidade do Estado do Rio de Janeiro, Faculdade de Oceanografia, Departamento de Oceanografia Biológica, Núcleo de Estudos em Manguezais, Rua São Francisco Xavier, 524, 4023-E, Maracanã, 20550-013 Rio de Janeiro, RJ, Brazil.,Faculdades São José, Escola de Saúde, Av. de Santa Cruz, 580, Realengo, 21710-232 Rio de Janeiro, RJ, Brazil
| | - Gustavo C D Estrada
- Universidade do Estado do Rio de Janeiro, Faculdade de Oceanografia, Departamento de Oceanografia Biológica, Núcleo de Estudos em Manguezais, Rua São Francisco Xavier, 524, 4023-E, Maracanã, 20550-013 Rio de Janeiro, RJ, Brazil
| | - Viviane Fernandez
- Universidade Federal Fluminense/UFF, Centro de Estudos Gerais, Instituto de Geociências, Departamento de Análise Geoambiental, Av. Gal. Milton Tavares de Souza, s/n, Campus da Praia Vermelha, Boa Viagem, 24210-340 Niterói, RJ, Brazil
| | - Marciel R M Estevam
- Universidade do Estado do Rio de Janeiro, Faculdade de Oceanografia, Departamento de Oceanografia Biológica, Núcleo de Estudos em Manguezais, Rua São Francisco Xavier, 524, 4023-E, Maracanã, 20550-013 Rio de Janeiro, RJ, Brazil
| | - Brunna T DE Souza
- Universidade do Estado do Rio de Janeiro, Faculdade de Oceanografia, Departamento de Oceanografia Biológica, Núcleo de Estudos em Manguezais, Rua São Francisco Xavier, 524, 4023-E, Maracanã, 20550-013 Rio de Janeiro, RJ, Brazil
| | - Mário L G Soares
- Universidade do Estado do Rio de Janeiro, Faculdade de Oceanografia, Departamento de Oceanografia Biológica, Núcleo de Estudos em Manguezais, Rua São Francisco Xavier, 524, 4023-E, Maracanã, 20550-013 Rio de Janeiro, RJ, Brazil
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