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Bacterioplankton Activity in a Meso-eutrophic Subtropical Coastal Lagoon
Joint Authors
Grinevicius, Valdelúcia M. A. S.
Schmitz Fontes, Maria L.
Fernandes, Heloísa
Brandão, Manoela
Hennemann, Mariana Coutinho
Aparecida Loss, Raquel
Tonetta, Denise
Cesca, Karina
Hessel Silveira, Mônica
Bedin, Mara
Recouvreux, Derce
Vasconcellos Antônio, Regina
Source
International Journal of Microbiology
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-10-03
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
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.
American Psychological Association (APA)
Schmitz Fontes, Maria L.& Fernandes, Heloísa& Brandão, Manoela& Hennemann, Mariana Coutinho& Aparecida Loss, Raquel& Grinevicius, Valdelúcia M. A. S.…[et al.]. 2018. Bacterioplankton Activity in a Meso-eutrophic Subtropical Coastal Lagoon. International Journal of Microbiology،Vol. 2018, no. 2018, pp.1-8.
https://search.emarefa.net/detail/BIM-1173310
Modern Language Association (MLA)
Schmitz Fontes, Maria L.…[et al.]. Bacterioplankton Activity in a Meso-eutrophic Subtropical Coastal Lagoon. International Journal of Microbiology No. 2018 (2018), pp.1-8.
https://search.emarefa.net/detail/BIM-1173310
American Medical Association (AMA)
Schmitz Fontes, Maria L.& Fernandes, Heloísa& Brandão, Manoela& Hennemann, Mariana Coutinho& Aparecida Loss, Raquel& Grinevicius, Valdelúcia M. A. S.…[et al.]. Bacterioplankton Activity in a Meso-eutrophic Subtropical Coastal Lagoon. International Journal of Microbiology. 2018. Vol. 2018, no. 2018, pp.1-8.
https://search.emarefa.net/detail/BIM-1173310
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1173310