Bacterioplankton Activity in a Meso-eutrophic Subtropical Coastal Lagoon
The aim of this study was to investigate whether the bacterioplankton activity in the meso-eutrophic Conceição Lagoon would increase significantly under allochthonous inputs of inorganic nutrients and organic carbon. Abundance and biomass of bacterioplankton were evaluated under three treatments: li...
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| Main Authors: | , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | International Journal of Microbiology |
| Online Access: | http://dx.doi.org/10.1155/2018/3209605 |
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| author | Maria L. Schmitz Fontes Heloísa Fernandes Manoela Brandão Mariana Coutinho Hennemann Raquel Aparecida Loss Valdelúcia Maria Alves de Souza Grinevicius Denise Tonetta Karina Cesca Mônica Hessel Silveira Mara Bedin Derce Recouvreux Regina Vasconcellos Antônio |
| author_facet | Maria L. Schmitz Fontes Heloísa Fernandes Manoela Brandão Mariana Coutinho Hennemann Raquel Aparecida Loss Valdelúcia Maria Alves de Souza Grinevicius Denise Tonetta Karina Cesca Mônica Hessel Silveira Mara Bedin Derce Recouvreux Regina Vasconcellos Antônio |
| author_sort | Maria L. Schmitz Fontes |
| collection | DOAJ |
| description | The aim of this study was to investigate whether the bacterioplankton activity in the meso-eutrophic Conceição Lagoon would increase significantly under allochthonous inputs of inorganic nutrients and organic carbon. Abundance and biomass of bacterioplankton were evaluated under three treatments: light (14 h light/10 h dark), complete darkness (dark-control), and nutrient (C + N + P—dark, 100 : 10 : 1) enrichments during 72 h. Nutrient enrichments promoted a significant increase in abundance (maximum of 19.0 ×109 cells·L−1 in the first 32 hours) and biomass of the heterotrophic bacterioplankton, which induced the formation of large clusters. Bacterial biomass remained constant in the non-enriched incubations (dark-control and light). Bacterial growth rates were significantly higher after nutrient additions (1.35 d−1), followed by control (0.79 d−1), and light (0.63 d−1) treatments, which were statistically equal (p>0.05). Bacterial production rates were also significantly higher under nutrient additions (1.28 d−1), compared to the control and light (0.50 d−1 and 0.44 d−1, respectively), demonstrating that bacterial growth and production in this meso-eutrophic lagoon are under an immediate “bottom-up” regulation, followed by a potential top-down effect. These facts reinforce the urgency on improving the local wastewater management plan in order to prevent further expansion of anoxic waters. |
| format | Article |
| id | doaj-art-b4b02ab70331480fb03a910d0aa30124 |
| institution | Kabale University |
| issn | 1687-918X 1687-9198 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Microbiology |
| spelling | doaj-art-b4b02ab70331480fb03a910d0aa301242025-02-03T06:45:17ZengWileyInternational Journal of Microbiology1687-918X1687-91982018-01-01201810.1155/2018/32096053209605Bacterioplankton Activity in a Meso-eutrophic Subtropical Coastal LagoonMaria L. Schmitz Fontes0Heloísa Fernandes1Manoela Brandão2Mariana Coutinho Hennemann3Raquel Aparecida Loss4Valdelúcia Maria Alves de Souza Grinevicius5Denise Tonetta6Karina Cesca7Mônica Hessel Silveira8Mara Bedin9Derce Recouvreux10Regina Vasconcellos Antônio11Departamento de Ecologia e Zoologia, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Trindade, 88040-970 Florianópolis, SC, BrazilDepartamento de Engenharia Sanitária, Centro Tecnológico, Universidade Federal de Santa Catarina, Trindade, 88040-970 Florianópolis, SC, BrazilDepartamento de Ecologia e Zoologia, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Trindade, 88040-970 Florianópolis, SC, BrazilDepartamento de Ecologia e Zoologia, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Trindade, 88040-970 Florianópolis, SC, BrazilDepartamento de Engenharia Química e Engenharia de Alimentos, Centro Tecnológico, Universidade Federal de Santa Catarina, Trindade, 88040-970 Florianópolis, SC, BrazilDepartamento deBioquímica, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Trindade, 88040-970 Florianópolis, SC, BrazilDepartamento de Ecologia e Zoologia, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Trindade, 88040-970 Florianópolis, SC, BrazilDepartamento de Engenharia Química e Engenharia de Alimentos, Centro Tecnológico, Universidade Federal de Santa Catarina, Trindade, 88040-970 Florianópolis, SC, BrazilDepartamento de Ecologia e Zoologia, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Trindade, 88040-970 Florianópolis, SC, BrazilDepartamento de Ecologia e Zoologia, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Trindade, 88040-970 Florianópolis, SC, BrazilDepartamento de Engenharia Química e Engenharia de Alimentos, Centro Tecnológico, Universidade Federal de Santa Catarina, Trindade, 88040-970 Florianópolis, SC, BrazilCampus Araranguá, Universidade Federal de Santa Catarina, Trindade, 88000-000 Araranguá, SC, BrazilThe aim of this study was to investigate whether the bacterioplankton activity in the meso-eutrophic Conceição Lagoon would increase significantly under allochthonous inputs of inorganic nutrients and organic carbon. Abundance and biomass of bacterioplankton were evaluated under three treatments: light (14 h light/10 h dark), complete darkness (dark-control), and nutrient (C + N + P—dark, 100 : 10 : 1) enrichments during 72 h. Nutrient enrichments promoted a significant increase in abundance (maximum of 19.0 ×109 cells·L−1 in the first 32 hours) and biomass of the heterotrophic bacterioplankton, which induced the formation of large clusters. Bacterial biomass remained constant in the non-enriched incubations (dark-control and light). Bacterial growth rates were significantly higher after nutrient additions (1.35 d−1), followed by control (0.79 d−1), and light (0.63 d−1) treatments, which were statistically equal (p>0.05). Bacterial production rates were also significantly higher under nutrient additions (1.28 d−1), compared to the control and light (0.50 d−1 and 0.44 d−1, respectively), demonstrating that bacterial growth and production in this meso-eutrophic lagoon are under an immediate “bottom-up” regulation, followed by a potential top-down effect. These facts reinforce the urgency on improving the local wastewater management plan in order to prevent further expansion of anoxic waters.http://dx.doi.org/10.1155/2018/3209605 |
| spellingShingle | Maria L. Schmitz Fontes Heloísa Fernandes Manoela Brandão Mariana Coutinho Hennemann Raquel Aparecida Loss Valdelúcia Maria Alves de Souza Grinevicius Denise Tonetta Karina Cesca Mônica Hessel Silveira Mara Bedin Derce Recouvreux Regina Vasconcellos Antônio Bacterioplankton Activity in a Meso-eutrophic Subtropical Coastal Lagoon International Journal of Microbiology |
| title | Bacterioplankton Activity in a Meso-eutrophic Subtropical Coastal Lagoon |
| title_full | Bacterioplankton Activity in a Meso-eutrophic Subtropical Coastal Lagoon |
| title_fullStr | Bacterioplankton Activity in a Meso-eutrophic Subtropical Coastal Lagoon |
| title_full_unstemmed | Bacterioplankton Activity in a Meso-eutrophic Subtropical Coastal Lagoon |
| title_short | Bacterioplankton Activity in a Meso-eutrophic Subtropical Coastal Lagoon |
| title_sort | bacterioplankton activity in a meso eutrophic subtropical coastal lagoon |
| url | http://dx.doi.org/10.1155/2018/3209605 |
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