Stronger impact of dispersant plus crude oil on natural plankton assemblages in short-term marine mesocosms

Jung, Seung Won; Kwon, Oh Youn; Joo, Chang Kyu; Kang, Jung-Hoon; Kim, Moonkoo; Shim, Won Joon; Kim, Young‐Ok

doi:10.1016/j.jhazmat.2012.03.034

Cited by 50 publications

(25 citation statements)

References 23 publications

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“…Linden et al [119] did not find significant differences in mesozooplankton abundance when exposed to North Sea crude oil and oil treated with Corexit 9550 dispersant. In contrast, Jung et al [120] observed that zooplankton communities were less affected with crude oil alone than with both crude oil and dispersant, in agreement with our results (Fig. 5).…”

Section: Discussionsupporting

confidence: 93%

Interactions between Zooplankton and Crude Oil: Toxic Effects and Bioaccumulation of Polycyclic Aromatic Hydrocarbons

Almeda¹,

et al. 2013

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We conducted ship-, shore- and laboratory-based crude oil exposure experiments to investigate (1) the effects of crude oil (Louisiana light sweet oil) on survival and bioaccumulation of polycyclic aromatic hydrocarbons (PAHs) in mesozooplankton communities, (2) the lethal effects of dispersant (Corexit 9500A) and dispersant-treated oil on mesozooplankton, (3) the influence of UVB radiation/sunlight exposure on the toxicity of dispersed crude oil to mesozooplankton, and (4) the role of marine protozoans on the sublethal effects of crude oil and in the bioaccumulation of PAHs in the copepod Acartia tonsa. Mortality of mesozooplankton increased with increasing oil concentration following a sigmoid model with a median lethal concentration of 32.4 µl L−1 in 16 h. At the ratio of dispersant to oil commonly used in the treatment of oil spills (i.e. 1∶20), dispersant (0.25 µl L−1) and dispersant- treated oil were 2.3 and 3.4 times more toxic, respectively, than crude oil alone (5 µl L−1) to mesozooplankton. UVB radiation increased the lethal effects of dispersed crude oil in mesozooplankton communities by 35%. We observed selective bioaccumulation of five PAHs, fluoranthene, phenanthrene, pyrene, chrysene and benzo[b]fluoranthene in both mesozooplankton communities and in the copepod A. tonsa. The presence of the protozoan Oxyrrhis marina reduced sublethal effects of oil on A. tonsa and was related to lower accumulations of PAHs in tissues and fecal pellets, suggesting that protozoa may be important in mitigating the harmful effects of crude oil exposure in copepods and the transfer of PAHs to higher trophic levels. Overall, our results indicate that the negative impact of oil spills on mesozooplankton may be increased by the use of chemical dispersant and UV radiation, but attenuated by crude oil-microbial food webs interactions, and that both mesozooplankton and protozoans may play an important role in fate of PAHs in marine environments.

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Section: Discussionsupporting

confidence: 93%

Interactions between Zooplankton and Crude Oil: Toxic Effects and Bioaccumulation of Polycyclic Aromatic Hydrocarbons

Almeda¹,

et al. 2013

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“…The most obvious effect of adding the Ca-aminoclay in this study was the rapid stimulation of bacterioplankton growth, which was similar to the mesocosm results [25,26]. The rapid bacterioplankton growth was probably caused by the immediate availability of a plentiful energy source caused by the presence of the Ca-aminoclay.…”

Section: Impact Of Ca-aminoclay On Plankton Organismssupporting

confidence: 87%

“…Pennate diatoms have been found to be more tolerant of a number of various stress factors in mesocosm studies than centric diatoms. In particular, the pennate C. closterium was found to be more abundant than centric diatoms in mesocosms affected by an oil spill [26,31] and C. closterium also became very abundant when C. polykrikoides blooms were destroyed in mesocosm studies [25]. Underwood et al [32] found that C. closterium could proliferate under nutrientunbalanced conditions.…”

Section: Impact Of Ca-aminoclay On Plankton Organismsmentioning

confidence: 99%

Can the algicidal material Ca-aminoclay be harmful when applied to a natural ecosystem? An assessment using microcosms

Jung

Yun

Yoo

et al. 2015

Journal of Hazardous Materials

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“…However, the total numbers of bacterial cells after SK09 inoculation in the previous microcosm and mesocosm experiments increased for the first 2 days and then decreased for the rest of the experimental period and the time lag in the changes in abundance of heterotrophic flagellates and ciliates might be associated with fluctuation in the total density of all bacteria (Jung et al 2008(Jung et al , 2010(Jung et al , 2013. In microbial loops, bacterivores play important roles in controlling bacterial communities (Jung et al 2012(Jung et al , 2015. In the previous results (Jung et al 2010(Jung et al , 2013, heterotrophic protist communities responded quickly to the increase of bacterial cells after the inoculation of SK09.…”

Section: Discussionmentioning

confidence: 99%

Algicidal activity of the bacterium, Pseudomonas fluorescens SK09, to mitigate Stephanodiscus hantzschii (Bacillariophyceae) blooms using field mesocosms

Noh

Jung

Kim

et al. 2017

Journal of Freshwater Ecology

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The main goal of this study was to characterize mortality and trophic interactions of Stephanodiscus hantzschii (small centric diatoms) in the presence of an algicidal bacterium, Pseudomonas fluorescens HYK0210-SK09 (SK09) in outdoor mesocosm experiments with an extremely low temperature and also in direct application in a river. SK09 at an inoculation density of 5 £ 10 6 cells/mL (Experiment 1) and SK09 cells immobilized in activated carbon polyvinyl alcohol sponge carriers (Experiment 2) did not appear to attack S. hantzschii in a species-specific manner at temperatures close to freezing. Furthermore, SK09 did not control the diatom blooms when SK09 cells immobilized in the carriers were directly applied in the river. The dynamics of both the heterotrophic flagellate and ciliate abundances showed similar trends to the activity of algicidal bacteria; moreover the heterotrophic protists could not control the total bacterial density. Inorganic nutrient concentrations and conductivity remained unchanged compared with those in the control group. The results obtained in this study and previous results are important for assessing biological control using algicidal bacteria in the wild.

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Stronger impact of dispersant plus crude oil on natural plankton assemblages in short-term marine mesocosms

Cited by 50 publications

References 23 publications

Interactions between Zooplankton and Crude Oil: Toxic Effects and Bioaccumulation of Polycyclic Aromatic Hydrocarbons

Interactions between Zooplankton and Crude Oil: Toxic Effects and Bioaccumulation of Polycyclic Aromatic Hydrocarbons

Can the algicidal material Ca-aminoclay be harmful when applied to a natural ecosystem? An assessment using microcosms

Algicidal activity of the bacterium, Pseudomonas fluorescens SK09, to mitigate Stephanodiscus hantzschii (Bacillariophyceae) blooms using field mesocosms

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