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Effects of a light crude oil spill on a tropical coastal phytoplankton community

Putzeys, Sébastien [autor] | Juárez Fonseca, Miryam [autora] | Valencia Agami, Sonia Scheherazad [autora] | Mendoza Flores, Armando [autor] | Cerqueda García, Daniel [autor] | Aguilar Trujillo, Ana C [autora] | Martínez Cruz, Manuel E [autor] | Okolodkov, Yuri B [autor] | Arcega Cabrera, Flor [autora] | Herrera Silveira, Jorge Alfredo [autor] | Aguirre Macedo, ‪Ma. Leopoldina [autora] | Pech Pool, Daniel Guadalupe [autor].
Tipo de material: Artículo en línea Artículo en línea Tipo de contenido: Texto Tipo de medio: Computadora Tipo de portador: Recurso en líneaTema(s): Fitopláncton | Bacillariophyceae | Dinoflagelados | Derrame de petróleo | Hidrocarburos alifáticos | Bacterias heterótrofas | Bacterias hidrocarbonoclasticasTema(s) en inglés: Phytoplankton | Bacillariophyceae | Dinophyceae | Oil spills | Hydrocarbons aliphatics | Heterotrophic bacteria | Hydrocarbonoclastic bacteriaDescriptor(es) geográficos: Golfo de México Nota de acceso: Disponible para usuarios de ECOSUR con su clave de acceso En: Bulletin of Environmental Contamination and Toxicology. Volumen 108, número 1 (January 2022), páginas 55–63. --ISSN: 1432-0800Número de sistema: 61296Resumen:
Inglés

Oiling scenarios following spills vary in concentration and usually can affect large coastal areas. Consequently, this research evaluated different crude oil concentrations (10, 40, and 80 mg L−¹) on the nearshore phytoplanktonic community in the southern Gulf of Mexico. This experiment was carried out for ten days using eight units of 2500 L each; factors monitored included shifts in phytoplankton composition, physicochemical parameters and the culturable bacterial abundance of heterotrophic and hydrocarbonoclastic groups. The temperature, salinity, and nutrient concentrations measured were within the ranges previously reported for Yucatan Peninsula waters. The total hydrocarbon concentration (TPH) in the control at T0 indicated the presence of hydrocarbons (PAHs 0.80 μg L−¹, aliphatics 7.83 μg L−¹ and UCM 184.09 μg L−¹). At T0, the phytoplankton community showed a similar assemblage structure and composition in all treatments. At T10, the community composition remained heterogeneous in the control, in agreement with previous reports for the area. However, for oiled treatments, Bacillariophyceae dominated at T10. Hydrocarbonoclastic bacteria were associated with oiled treatments throughout the experiment, while heterotrophic bacteria were associated with control conditions. Our results agreed with previous works at the taxonomic level showing the presence of Bacillariophyceae and Dinophyceae in oil-related treatments, where these groups showed the major interactions in co-occurrence networks. In contrast, Chlorophyceae showed the key node in the co-occurrence network for the control. This study aims to contribute to knowledge on phytoplankton community shifts during a crude oil spill in subtropical oligotrophic regions.

Recurso en línea: https://doi.org/10.1007/s00128-021-03306-4
Lista(s) en las que aparece este ítem: AHMRET-Campeche
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Disponible para usuarios de ECOSUR con su clave de acceso

Oiling scenarios following spills vary in concentration and usually can affect large coastal areas. Consequently, this research evaluated different crude oil concentrations (10, 40, and 80 mg L−¹) on the nearshore phytoplanktonic community in the southern Gulf of Mexico. This experiment was carried out for ten days using eight units of 2500 L each; factors monitored included shifts in phytoplankton composition, physicochemical parameters and the culturable bacterial abundance of heterotrophic and hydrocarbonoclastic groups. The temperature, salinity, and nutrient concentrations measured were within the ranges previously reported for Yucatan Peninsula waters. The total hydrocarbon concentration (TPH) in the control at T0 indicated the presence of hydrocarbons (PAHs 0.80 μg L−¹, aliphatics 7.83 μg L−¹ and UCM 184.09 μg L−¹). At T0, the phytoplankton community showed a similar assemblage structure and composition in all treatments. At T10, the community composition remained heterogeneous in the control, in agreement with previous reports for the area. However, for oiled treatments, Bacillariophyceae dominated at T10. Hydrocarbonoclastic bacteria were associated with oiled treatments throughout the experiment, while heterotrophic bacteria were associated with control conditions. Our results agreed with previous works at the taxonomic level showing the presence of Bacillariophyceae and Dinophyceae in oil-related treatments, where these groups showed the major interactions in co-occurrence networks. In contrast, Chlorophyceae showed the key node in the co-occurrence network for the control. This study aims to contribute to knowledge on phytoplankton community shifts during a crude oil spill in subtropical oligotrophic regions. eng

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