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Fernandes LDA, Corte GN, Moura L, Reis C, Matos T, Moreno D, Cortez PSA, de Carvalho WF, Monteiro-Ribas W, Gonçalves JEA, Ribeiro F, Thomazelli F, Rizzini-Ansari N, Neto EBF, Gaelzer LR, de Souza Martins E, Lobão MM, Baeta-Neves MH, Coutinho R. Effects of dredging activities and seasonal variation on coastal plankton assemblages: results from 10 years of environmental monitoring. Environ Monit Assess 2023; 195:261. [PMID: 36598707 DOI: 10.1007/s10661-022-10867-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Accepted: 12/19/2022] [Indexed: 06/17/2023]
Abstract
Coastal zones support the most productive marine ecosystems, yet they are increasingly threatened by anthropogenic stressors such as dredging. In this study, we investigated how seasonal variation and dredging activities conducted during the construction of a harbor and submarine base (Sepetiba Bay, RJ, Brazil) affected the phytoplankton and zooplankton assemblages. The observed temporal variability at five different sites over 10 years revealed that dredging exceeds the expected influence of dry and rainy seasons on plankton abundance and diversity. In general, the abundance of both groups increased during dredging due to the resuspension of nutrients and benthic organisms. This increase was particularly evident in the dinoflagellate Scrippsiellaa cuminata, the diatoms Thalassiosira rotula and Nitzschia longissima, and the herbivorous zooplankton Acartia clausii and Pseudevadne tergestina. Moreover, season and dredging activities synergistically influenced plankton assemblages, resulting in larger seasonal variations during dredging activities. After the end of the harbor construction, plankton abundance decreased and remained low until the end of the monitoring, which may indicate persistent changes in the biodiversity and ecosystem functioning of impacted areas.
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Affiliation(s)
- Lohengrin D A Fernandes
- Division of Applied Biotechnology, Department of Marine Biotechnology, Instituto de Estudos do Mar Almirante Paulo Moreira (IEAPM), Brazilian Navy, Kioto St, 253, Arraial do Cabo, Rio de Janeiro, 28930-000, Brazil.
- Marine Biotechnology Post-Graduation Program (PPGBM), Rio de Janeiro, Brazil.
| | - Guilherme N Corte
- Division of Applied Biotechnology, Department of Marine Biotechnology, Instituto de Estudos do Mar Almirante Paulo Moreira (IEAPM), Brazilian Navy, Kioto St, 253, Arraial do Cabo, Rio de Janeiro, 28930-000, Brazil
- College of Science and Mathematics, University of Virgin Islands, Charlotte Amalie West, Saint Thomas, USVI, USA
| | - Laura Moura
- Division of Applied Biotechnology, Department of Marine Biotechnology, Instituto de Estudos do Mar Almirante Paulo Moreira (IEAPM), Brazilian Navy, Kioto St, 253, Arraial do Cabo, Rio de Janeiro, 28930-000, Brazil
| | - Carolina Reis
- Marine Biotechnology Post-Graduation Program (PPGBM), Rio de Janeiro, Brazil
| | - Thiago Matos
- Marine Biotechnology Post-Graduation Program (PPGBM), Rio de Janeiro, Brazil
| | - Danubia Moreno
- Division of Biological Oceanography, Department of Oceanography, IEAPM, Brazilian Navy, Kioto St, 253, Rio de Janeiro, Arraial Do Cabo, Brazil
| | - Pedro Sant' Anna Cortez
- Division of Biological Oceanography, Department of Oceanography, IEAPM, Brazilian Navy, Kioto St, 253, Rio de Janeiro, Arraial Do Cabo, Brazil
| | - Wanderson Fernandes de Carvalho
- Department of Marine Ecology and Resources, Federal University of the State of Rio de Janeiro, DERM/UNIRIO, Rio de Janeiro, Brazil
| | - Wanda Monteiro-Ribas
- Division of Biological Oceanography, Department of Oceanography, IEAPM, Brazilian Navy, Kioto St, 253, Rio de Janeiro, Arraial Do Cabo, Brazil
| | - José Eduardo A Gonçalves
- Division of Applied Biotechnology, Department of Marine Biotechnology, Instituto de Estudos do Mar Almirante Paulo Moreira (IEAPM), Brazilian Navy, Kioto St, 253, Arraial do Cabo, Rio de Janeiro, 28930-000, Brazil
| | - Fernando Ribeiro
- Division of Physical Oceanography, Department of Oceanography, IEAPM, Brazilian Navy, Kioto St, 253, Rio de Janeiro, Arraial Do Cabo, Brazil
| | - Fernanda Thomazelli
- Division of Chemical Oceanography and Environmental Geochemistry, Department of Oceanography, IEAPM, Brazilian Navy, Kioto St, 253, Arraial Do Cabo, Rio de Janeiro, Brazil
| | - Nafisa Rizzini-Ansari
- Division of Chemical Oceanography and Environmental Geochemistry, Department of Oceanography, IEAPM, Brazilian Navy, Kioto St, 253, Arraial Do Cabo, Rio de Janeiro, Brazil
| | - Eduardo Barros Fagundes Neto
- Division of Biological Oceanography, Department of Oceanography, IEAPM, Brazilian Navy, Kioto St, 253, Rio de Janeiro, Arraial Do Cabo, Brazil
- Submarine Acoustic Post-Graduation Program (PPGAS), Rio de Janeiro, Brazil
| | - Luiz Ricardo Gaelzer
- Division of Biological Oceanography, Department of Oceanography, IEAPM, Brazilian Navy, Kioto St, 253, Rio de Janeiro, Arraial Do Cabo, Brazil
| | - Elizabeth de Souza Martins
- Division of Biological Oceanography, Department of Oceanography, IEAPM, Brazilian Navy, Kioto St, 253, Rio de Janeiro, Arraial Do Cabo, Brazil
| | - Márcio Martins Lobão
- Division of Chemical Oceanography and Environmental Geochemistry, Department of Oceanography, IEAPM, Brazilian Navy, Kioto St, 253, Arraial Do Cabo, Rio de Janeiro, Brazil
| | - Maria Helena Baeta-Neves
- Division of Applied Biotechnology, Department of Marine Biotechnology, Instituto de Estudos do Mar Almirante Paulo Moreira (IEAPM), Brazilian Navy, Kioto St, 253, Arraial do Cabo, Rio de Janeiro, 28930-000, Brazil
- Marine Biotechnology Post-Graduation Program (PPGBM), Rio de Janeiro, Brazil
| | - Ricardo Coutinho
- Division of Applied Biotechnology, Department of Marine Biotechnology, Instituto de Estudos do Mar Almirante Paulo Moreira (IEAPM), Brazilian Navy, Kioto St, 253, Arraial do Cabo, Rio de Janeiro, 28930-000, Brazil
- Marine Biotechnology Post-Graduation Program (PPGBM), Rio de Janeiro, Brazil
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