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Development of Rhizophora mangle (Rhizophoraceae) and Avicennia schaueriana (Avicenniaceae) in the presence of a hydrocarbon-degrading bacterial consortium and marine diesel oil. 3 Biotech 2022; 12:157. [PMID: 35791411 PMCID: PMC9250571 DOI: 10.1007/s13205-022-03212-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Accepted: 11/10/2021] [Indexed: 11/25/2022] Open
Abstract
The development of Rhizophora mangle and Avicennia schaueriana seedlings impacted by marine diesel oil (MDO) was evaluated in the presence or absence of a hydrocarbon-degrading bacterial consortium (HBC). The bioassays were conducted in a greenhouse during 6 months and consisted of three different treatments (control, MDO only and MDO + HBC). The bacterial consortium was mainly composed of Bacillus spp. (73%), but Rhizobium spp., Pseudomonas spp., Ochrobactrum spp., and Brevundimonas spp. were also present. After 6 months, A. schaueriana seedlings showed higher mortality compared to those of R. mangle; R. mangle exhibited 68% (control), 44% (MDO alone) and 50% (MDO + HBC) seedlings survivorship compared to 42% (control), 0% (MDO alone) and 4% (MDO + HBC) for A. schaueriana. This variability may be due to differences in species physiology. Stem growth, diameter and number of leaves remained constant during the 6 months of the experiment with marine diesel oil and hydrocarbon-degrading bacterial consortium (MDO + BBC). For both mangrove species, bacterial enzymatic activity in the sediments was sufficient to maintain cell counts of 107 cells cm-3 in the rhizospheric soil and possibly synthetize the extracellular polymeric substances (EPS) that may emulsify and solubilize oil products.
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Laut L, Martins MVA, Frontalini F, Ballalai JM, Belart P, Habib R, Fontana LF, Clemente IMMM, Lorini ML, Mendonça Filho JG, Laut VM, Figueiredo MDSL. Assessment of the trophic state of a hypersaline-carbonatic environment: Vermelha Lagoon (Brazil). PLoS One 2017; 12:e0184819. [PMID: 28934270 PMCID: PMC5608279 DOI: 10.1371/journal.pone.0184819] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Accepted: 08/31/2017] [Indexed: 11/18/2022] Open
Abstract
Vermelha Lagoon is a hypersaline shallow transitional ecosystem in the state of Rio de Janeiro (Brazil). This lagoon is located in the protected area of Massambaba, between the cities of Araruama and Saquarema (Brazil), and displays two quite uncommon particularities: it exhibits carbonate sedimentation and displays the development of Holocene stromatolites. Due to both particularities, the salt industry and property speculation have been, increasingly, generating anthropic pressures on this ecosystem. This study aims to apply a multiproxy approach to evaluate the trophic state of Vermelha Lagoon based on physicochemical parameters and geochemical data for the quantification and qualification of organic matter (OM), namely total organic carbon (TOC), total sulfur (TS), total phosphorus (TP) and biopolymeric carbon (BPC), including carbohydrates (CHO), lipids (LIP) and proteins (PTN). The CHO/TOC ratio values suggest that OM supplied to the sediment is of autochthonous origin and results, essentially, from microbial activity. The cluster analyses allowed the identification of four regions in Vermelha Lagoon. The Region I included stations located in shallow areas of the eastern sector of Vermelha lagoon affected by the impact of the artificial channel of connection with Araruama Lagoon. The Region II, under the influence of salt pans, is characterized by the highest values of BPC, namely CHO promoted by microbiological activity. The Region III include stations spread through the lagoon with high values of dissolved oxygen and lower values of TP. Stromatolites and microbial mattes growth was observed in some stations of this sector. Region IV, where the highest values of TOC and TS were found, represents depocenters of organic matter, located in general in depressed areas. Results of this work evidences that the Vermelha Lagoon is an eutrophic but alkaline and well oxygenated environment (at both water column and surface sediment) where the autotrophic activity is greater than heterotrophic one. These particular conditions make this a special and rare ecosystem.
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Affiliation(s)
- Lazaro Laut
- Laboratório de Micropaleontologia – LabMicro, Universidade Federal do Estado do Rio de Janeiro – UNIRIO, Rio de Janeiro, Rio de Janeiro, Brazil
- * E-mail:
| | - Maria Virginia Alves Martins
- Departamento de Estratigrafia e Paleontologia, Universidade do Estado do Rio de Janeiro – UERJ, Rio de Janeiro, Rio de Janeiro, Brazil
- Unidade de Investigação GeoBioTec, Departamento de Geociências, Universidade de Aveiro, Aveiro, Portugal
| | - Fabrizio Frontalini
- Dipartimento di Scienze Pure e Applicate (DiSPeA), Università degli Studi di Urbino "Carlo Bo", Urbino, Italy
| | - João M. Ballalai
- Laboratório de Micropaleontologia – LabMicro, Universidade Federal do Estado do Rio de Janeiro – UNIRIO, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Pierre Belart
- Laboratório de Micropaleontologia – LabMicro, Universidade Federal do Estado do Rio de Janeiro – UNIRIO, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Renan Habib
- Laboratório de Micropaleontologia – LabMicro, Universidade Federal do Estado do Rio de Janeiro – UNIRIO, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Luiz F. Fontana
- Laboratório de Palinofácies & Fácies Orgânicas (LAFO), Universidade Federal do Rio de Janeiro – UFRJ, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Iara M. M. M. Clemente
- Departamento de Estratigrafia e Paleontologia, Universidade do Estado do Rio de Janeiro – UERJ, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Maria Lucia Lorini
- Departamento de Ciências Naturais, Universidade Federal do Estado do Rio de Janeiro – UNIRIO, Rio de Janeiro, Rio de Janeiro, Brazil
| | - João G. Mendonça Filho
- Laboratório de Palinofácies & Fácies Orgânicas (LAFO), Universidade Federal do Rio de Janeiro – UFRJ, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Vanessa M. Laut
- Programa de Pós-Graduação em Biologia Marinha e Ambientes Costeiros, Universidade Federal Fluminense – UFF, Instituto de Biologia, Niterói, Rio de Janeiro, Brazil
| | - Marcos de Souza Lima Figueiredo
- Programa de Pós-graduação em Biodiversidade Neotropical, Universidade Federal do Estado do Rio de Janeiro – UNIRIO, Rio de Janeiro, Rio de Janeiro, Brazil
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Leboulanger C, Agogué H, Bernard C, Bouvy M, Carré C, Cellamare M, Duval C, Fouilland E, Got P, Intertaglia L, Lavergne C, Le Floc’h E, Roques C, Sarazin G. Microbial Diversity and Cyanobacterial Production in Dziani Dzaha Crater Lake, a Unique Tropical Thalassohaline Environment. PLoS One 2017; 12:e0168879. [PMID: 28045976 PMCID: PMC5207672 DOI: 10.1371/journal.pone.0168879] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Accepted: 12/07/2016] [Indexed: 11/18/2022] Open
Abstract
This study describes, for the first time, the water chemistry and microbial diversity in Dziani Dzaha, a tropical crater lake located on Mayotte Island (Comoros archipelago, Western Indian Ocean). The lake water had a high level of dissolved matter and high alkalinity (10.6-14.5 g L-1 eq. CO32-, i.e. 160-220 mM compare to around 2-2.5 in seawater), with salinity up to 52 psu, 1.5 higher than seawater. Hierarchical clustering discriminated Dziani Dzaha water from other alkaline, saline lakes, highlighting its thalassohaline nature. The phytoplankton biomass was very high, with a total chlorophyll a concentration of 524 to 875 μg chl a L-1 depending on the survey, homogeneously distributed from surface to bottom (4 m). Throughout the whole water column the photosynthetic biomass was dominated (>97% of total biovolume) by the filamentous cyanobacteria Arthrospira sp. with a straight morphotype. In situ daily photosynthetic oxygen production ranged from 17.3 to 22.2 g O2 m-2 d-1, consistent with experimental production / irradiance measurements and modeling. Heterotrophic bacterioplankton was extremely abundant, with cell densities up to 1.5 108 cells mL-1 in the whole water column. Isolation and culture of 59 Eubacteria strains revealed the prevalence of alkaliphilic and halophilic organisms together with taxa unknown to date, based on 16S rRNA gene analysis. A single cloning-sequencing approach using archaeal 16S rDNA gene primers unveiled the presence of diverse extremophilic Euryarchaeota. The water chemistry of Dziani Dzaha Lake supports the hypothesis that it was derived from seawater and strongly modified by geological conditions and microbial activities that increased the alkalinity. Dziani Dzaha has a unique consortium of cyanobacteria, phytoplankton, heterotrophic Eubacteria and Archaea, with very few unicellular protozoa, that will deserve further deep analysis to unravel its uncommon diversity. A single taxon, belonging to the genus Arthrospira, was found responsible for almost all photosynthetic primary production.
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Affiliation(s)
| | - Hélène Agogué
- UMR LIENSs, Centre National de la Recherche Scientifique, La Rochelle, France
| | - Cécile Bernard
- UMR MCAM, Muséum National d’Histoire Naturelle, Paris, France
| | - Marc Bouvy
- UMR MARBEC, Institut de Recherche pour le Développement, Sète-Montpellier, France
| | - Claire Carré
- UMR MARBEC, Institut de Recherche pour le Développement, Sète-Montpellier, France
| | - Maria Cellamare
- UMR MCAM, Muséum National d’Histoire Naturelle, Paris, France
| | - Charlotte Duval
- UMR MCAM, Muséum National d’Histoire Naturelle, Paris, France
| | - Eric Fouilland
- UMR MARBEC, Centre National de la Recherche Scientifique, Sète-Montpellier, France
| | - Patrice Got
- UMR MARBEC, Centre National de la Recherche Scientifique, Sète-Montpellier, France
| | - Laurent Intertaglia
- Observatoire Océanologique de Banyuls-sur-Mer, Université Pierre et Marie Curie, Banyuls-sur-Mer, France
| | - Céline Lavergne
- UMR LIENSs, Centre National de la Recherche Scientifique, La Rochelle, France
| | - Emilie Le Floc’h
- UMR MARBEC, Centre National de la Recherche Scientifique, Sète-Montpellier, France
| | - Cécile Roques
- UMR MARBEC, Centre National de la Recherche Scientifique, Sète-Montpellier, France
| | - Gérard Sarazin
- UMR7154 Institut de Physique du Globe de Paris, Université Paris Diderot, Paris, France
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Sabadini-Santos E, Senez TM, Silva TS, Moreira MR, Mendonça-Filho JG, Santelli RE, Crapez MAC. Organic matter and pyritization relationship in recent sediments from a tropical and eutrophic bay. MARINE POLLUTION BULLETIN 2014; 89:220-228. [PMID: 25444621 DOI: 10.1016/j.marpolbul.2014.09.055] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2014] [Revised: 09/22/2014] [Accepted: 09/29/2014] [Indexed: 06/04/2023]
Abstract
The degree of pyritization (DOP) and the extension of metals incorporation into pyrite was investigated at Guanabara Bay sediments. Maximum concentrations of total organic carbon (TOC), total sulfur, biopolymers and viable bacteria cells were observed in silted stations close to discharge points of sewage and minimum concentrations at sandy stations at the entrance of the bay. Pyrite iron concentrations (Fepy) was always lower than the reactive iron and Fepy were below the detection limit at sandy stations. The same trend was found to metals, which its degree of pyritization was Mn=Cu>As=Co>Ni>Cd>Zn≫Pb>Cr. The bay gathers all required factors to sulfate reduction and pyrite formation, once the C:S ratio express the reduced tendency conditions, almost half of the TOC present in its sediments is labile and both reactive sulfur and iron are available. However the degree of trace metals pyritization did not exceed 20%, consistent with the median DOP (29%).
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Affiliation(s)
- Elisamara Sabadini-Santos
- Departamento de Geoquímica, Instituto de Química, Universidade Federal Fluminense, Niterói, RJ 24020-150, Brazil.
| | - Thaise M Senez
- Departamento de Biologia Marinha, Instituto de Biologia, Universidade Federal Fluminense, Niterói, RJ 24020-150, Brazil.
| | - Tabatta S Silva
- Departamento de Biologia Marinha, Instituto de Biologia, Universidade Federal Fluminense, Niterói, RJ 24020-150, Brazil.
| | - Manuel R Moreira
- Departamento de Geoquímica, Instituto de Química, Universidade Federal Fluminense, Niterói, RJ 24020-150, Brazil.
| | - João Graciano Mendonça-Filho
- Laboratório de Palinofácies and Fácies Orgânica (LAFO), Departamento de Geologia, Instituto de Geociências, Universidade Federal do Rio de Janeiro, RJ 21949-900, Brazil.
| | - Ricardo E Santelli
- Departamento de Química Analítica, Instituto de Química, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ 21941-909, Brazil.
| | - Mirian A C Crapez
- Departamento de Biologia Marinha, Instituto de Biologia, Universidade Federal Fluminense, Niterói, RJ 24020-150, Brazil.
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Kozak M, Krzanowski W, Tartanus M. Use of the correlation coefficient in agricultural sciences: problems, pitfalls and how to deal with them. AN ACAD BRAS CIENC 2012. [DOI: 10.1590/s0001-37652012000400029] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This paper discusses a number of aspects concerning the analysis, interpretation and reporting of correlations in agricultural sciences. Various problems that one might encounter with these aspects are identified, and suggestions of how to overcome these problems are proposed. Some of the examples presented show how mistaken and even misleading the interpretation of correlation can be when one ignores simple rules of analysis.
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