AQUATOX: Modeling environmental fate and ecological effects in aquatic ecosystems

Park, Richard A.; Clough, Jonathan S.; Wellman, Marjorie

doi:10.1016/j.ecolmodel.2008.01.015

Cited by 199 publications

(181 citation statements)

References 41 publications

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“…AQUATOX, QUAL2K, and WASP conceptualize the benthos as a two layer, 1 mm aerobic and 10 cm anaerobic, well-mixed system that receives inputs from detrital carbon of varying quality, i.e., labile algal detritus, refractory detritus, and nonreactive detritus [DiToro, 2001;Wool et al, 2006;Chapra et al, 2008;Park and Clough, 2012]. An underlying assumption of these models is that POC is contained solely in the anaerobic layer under steady state, thus the models ignore the impact of fluvial erosion on benthic carbon composition.…”

Section: Introductionmentioning

confidence: 99%

Isotope‐based Fluvial Organic Carbon (ISOFLOC) Model: Model formulation, sensitivity, and evaluation

Ford

Fox

2015

Water Resources Research

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Watershed-scale carbon budgets remain poorly understood, in part due to inadequate simulation tools to assess in-stream carbon fate and transport. A new numerical model termed ISOtope-based FLuvial Organic Carbon (ISOFLOC) is formulated to simulate the fluvial organic carbon budget in watersheds where hydrologic, sediment transport, and biogeochemical processes are coupled to control benthic and transported carbon composition and flux. One ISOFLOC innovation is the formulation of new stable carbon isotope model subroutines that include isotope fractionation processes in order to estimate carbon isotope source, fate, and transport. A second innovation is the coupling of transfers between carbon pools, including algal particulate organic carbon, fine particulate and dissolved organic carbon, and particulate and dissolved inorganic carbon, to simulate the carbon cycle in a comprehensive manner beyond that of existing watershed water quality models. ISOFLOC was tested and verified in a low-gradient, agriculturally impacted stream. Results of a global sensitivity analysis suggested the isotope response variable had unique sensitivity to the coupled interaction between fluvial shear resistance of algal biomass and the concentration of dissolved inorganic carbon. Model calibration and validation suggested good agreement at event, seasonal, and annual timescales. Multiobjective uncertainty analysis suggested inclusion of the carbon stable isotope routine reduced uncertainty by 80% for algal particulate organic carbon flux estimates.

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Section: Introductionmentioning

confidence: 99%

Isotope‐based Fluvial Organic Carbon (ISOFLOC) Model: Model formulation, sensitivity, and evaluation

Ford

Fox

2015

Water Resources Research

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“…For example, the AQUATOX model [59] was developed to predict the fate and the effects of pollutants in aquatic lentic and lotic ecosystems, mimicking the changes in animal communities (e.g., biomass variation). Even if the model takes into account a mechanistic relationship (e.g., reduced ingestion caused by sublethal toxicant effects, suspended sediments, and habitat preferences), it cannot predict the shift in community composition after impairment.…”

Section: Trendsmentioning

confidence: 99%

Biomonitoring of lake sediments using benthic macroinvertebrates

Bettinetti

Ponti

Marziali

et al. 2012

TrAC Trends in Analytical Chemistry

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The Water Framework Directive (2000/60/EC) is an innovative piece of legislation aimed at protecting the quality of all continental and coastal waters in Europe through an ecological evaluation of the ecosystems. Since it is widely acknowledged that the greater the ecological realism the greater the difficulty of its definition, we describe the different uses of benthic organisms as a tool for assessing the quality of sediment in lakes. We review the responses from single species to the community. We focus on studies in the laboratory and in the field, and we also critically consider the use of predictive models for these evaluations.Our discussion of the information collected underlines the importance of the relation between sensitivity of single species and contaminants. Moreover, the recent approach in developing mechanistic models to predict the response of natural communities seems to be particularly powerful for community ecology, and we strongly recommend more effort along these lines. ª

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“…The model is capable of computing endpoint concentrations for pollutants in both water and bottom sediments, as well as their effects on a variety of aquatic flora and fauna. A detailed description of AQUATOX including the specific calculations for ecosystem health parameters is included in Park and Clough (2004), Park et al (2008) and references therein.…”

Section: Ecological Risk Assessmentmentioning

confidence: 99%

“…groundwater contamination). AQUATOX (Park et al, 2008) was found to be the most comprehensive of the few existing general ecological risk models, capable of representing the combined environmental fate and effects of toxic chemicals and their impacts to aquatic ecosystems.…”

Section: Introductionmentioning

confidence: 99%

An integrated model for assessing the risk of TCE groundwater contamination to human receptors and surface water ecosystems

McKnight

Funder

Rasmussen³

et al. 2010

Ecological Engineering

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a b s t r a c tThe practical implementation of the European Water Framework Directive has resulted in an increased focus on the hyporheic zone. In this paper, an integrated model was developed for evaluating the impact of point sources in groundwater on human health and surface water ecosystems. This was accomplished by coupling the system dynamics-based decision support system CARO-PLUS to the aquatic ecosystem model AQUATOX using an analytical volatilization model for the stream. The model was applied to a case study where a trichloroethylene (TCE)-contaminated groundwater plume is discharging to a stream. The TCE source will not be depleted for many decades; however, measured and predicted TCE concentrations in surface water were found to be below human health risk management targets. Volatilization rapidly attenuates TCE concentrations in surface water. Thus, only a 30-m stream reach fails to meet surface water quality criteria. An ecological risk assessment found that the TCE contamination did not impact the stream ecosystem. Uncertainty assessment revealed hydraulic conductivity to be the most important site-specific parameter. These results indicate that contaminant plumes with g L −1 concentrations of TCE entering surface water systems may not pose a significant risk.

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AQUATOX: Modeling environmental fate and ecological effects in aquatic ecosystems

Cited by 199 publications

References 41 publications

Isotope‐based Fluvial Organic Carbon (ISOFLOC) Model: Model formulation, sensitivity, and evaluation

Isotope‐based Fluvial Organic Carbon (ISOFLOC) Model: Model formulation, sensitivity, and evaluation

Biomonitoring of lake sediments using benthic macroinvertebrates

An integrated model for assessing the risk of TCE groundwater contamination to human receptors and surface water ecosystems

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