Application of an AQUATOX model for direct toxic effects and indirect ecological effects assessment of Polycyclic aromatic hydrocarbons (PAHs) in a plateau eutrophication lake, China

Zhang, Lulu; Cui, Jiansheng; Song, Tiance; Liu, Yong

doi:10.1016/j.ecolmodel.2018.09.019

Cited by 12 publications

(8 citation statements)

References 51 publications

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“…2a ). This counter-intuitive change in the biomass of diatoms can be explained by species interactions, or so-called indirect effects (Grechi et al, 2016 ; Zhang et al, 2018 ). The response in terms of the total biomass to BaP conformed to a sigmoid-shaped curve, such as a Weibull or logistic distribution.…”

Section: Resultsmentioning

confidence: 99%

“…Polycyclic aromatic hydrocarbons (PAHs) are persistent organic pollutants and their ecological effects and potential toxicity have been widely reported (Miao et al, 2023 ; Han et al, 2022 ). Traditional assessments of ecological effects are based on chemical analysis and biological toxicity tests in a single species exposed to toxicants (Zhang et al, 2018 ). However, this method has been criticized because of its lack of ecological realism.…”

Section: Introductionmentioning

confidence: 99%

“…Real ecosystems are environments under multiple stresses with community dynamics (Lombardo et al, 2015 ; Grechi et al, 2016 ). Therefore, new tools need to be developed and applied that consider the complexity of communities and ecosystems (Zhang et al 2018 ). Indeed, ecological models have been proposed to overcome these limitations (Galic et al, 2010 ).…”

Section: Introductionmentioning

confidence: 99%

“…The total PAHs concentration in the sediments of BYD Lake ranged from 97.2 to 2402 ng g −1 dw, much higher than the mean values of Chinese Lakes (478 ± 812 ng g −1 dw) (Guo et al, 2011 ; Xia et al, 2023 ). In addition, most existing studies for BYD lake have focused on the toxic effects of chemicals (Zhang et al, 2014 , 2018 , 2020 ; Zeng et al, 2022 ), ignoring the underlying mechanisms and community level indicators. It is necessary to develop indicators that reflect the integrity of ecosystems after understanding the community dynamics driven by PAHs.…”

Section: Introductionmentioning

confidence: 99%

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Community ecological response to polycyclic aromatic hydrocarbons in Baiyangdian Lake based on an ecological model

Zeng,

Li,

Zhao

et al. 2024

Ecotoxicology

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The dynamic response of a single population to chemicals can be represented by a Weibull function. However, it is unclear whether the overall response can still be represented in this manner when scaled up to the community level. In this study, we investigated the responses of biological communities to polycyclic aromatic hydrocarbons by using an ecological model of Baiyangdian Lake in northern China. The community dynamics process was divided into the following three stages. In the first stage, toxicity, played a dominant role and strong, medium, and weak species responses were observed according to the toxicity sensitivity. In the second stage, the dynamic process was dominated by the interaction strength with three alternative dynamic pathways comprising of direct response, no response, or inverse response. In the third stage, the toxicity was again dominant, and the biomasses of all species decreased to extinction. The toxicological dynamics were far more complex at the community level than those at the single species level and they were also influenced by the interaction strength as well as toxicity. The toxicological dynamic process in the community was constantly driven by the competing effects of these two forces. In addition to the total biomass, the interaction strength was identified as a suitable community-level signal because it exhibited good indicator properties regarding ecosystem steady-state transitions. However, we found that food web stability indicators were not suitable for use as community-level signals because they were not sensitive to changes in the ecosystem state. Some ecological management suggestions have been proposed, including medium to long-term monitoring, and reduction of external pollution loads and bioindicators. The results obtained in this study increase our understanding of how chemicals interfere with community dynamics, and the interaction strength and total biomass were identified as useful holistic indicators.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Community ecological response to polycyclic aromatic hydrocarbons in Baiyangdian Lake based on an ecological model

Zeng,

Li,

Zhao

et al. 2024

Ecotoxicology

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“…Since there are various exposure routes to the receptors in the real environment, traditional risk assessment methodology using laboratory toxicity test data on single species is not enough to be considered ecological realism [ 13 ]. As a substitute, the integrated ecological model can simulate the complex interaction of the real environment.…”

Section: Introductionmentioning

confidence: 99%

Coupling of the AQUATOX and EFDC Models for Ecological Impact Assessment of Chemical Spill Scenarios in the Jeonju River, Korea

Yeom

Kim

et al. 2020

Biology

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In this study, an ecological impact was assessed for the short-term leak scenario through the AQUATOX-EFDC model, which combines the proven ecological model AQUATOX with the hydrodynamic model EFDC. A case study of the coupled AQUATOX-EFDC model was conducted for 30–30,000 kg toluene leak scenarios in the Jeonju River in South Korea. A 21-day scenario simulation was conducted, and the impact of the toluene spill accident was evaluated by comparing the biomass between the control simulation and the perturbed simulation. As a result of the simulation, it was found that in the scenario in which 3000 kg of toluene was leaked for a day, a substantial change was expected in the range of 0–640 m from the accident site. Additionally, for a 30,000 kg leak, a substantial change was expected in the range of 0–2300 m from the accident site, and the greatest damage was observed for the fish species group, the top predators. As a result, the AQUATOX-EFDC simulation showed a significant ecological impact, and the proposed model will be helpful to understand the ecological impact and establish the management strategy for the ecological risk of the chemical spill.

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Bacterial community structure in the surface sediments of different habitats of Baiyangdian Lake, Northern China: effects of nutrient conditions

Jinliang

Liu

et al. 2021

J Soils Sediments

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Application of an AQUATOX model for direct toxic effects and indirect ecological effects assessment of Polycyclic aromatic hydrocarbons (PAHs) in a plateau eutrophication lake, China

Cited by 12 publications

References 51 publications

Community ecological response to polycyclic aromatic hydrocarbons in Baiyangdian Lake based on an ecological model

Community ecological response to polycyclic aromatic hydrocarbons in Baiyangdian Lake based on an ecological model

Coupling of the AQUATOX and EFDC Models for Ecological Impact Assessment of Chemical Spill Scenarios in the Jeonju River, Korea

Bacterial community structure in the surface sediments of different habitats of Baiyangdian Lake, Northern China: effects of nutrient conditions

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