Investigating the need for complex vs. simple scenarios to improve predictions of aquatic ecosystem exposure with the SoilPlus model

Ghirardello, Davide; Morselli, Melissa; Otto, Stefan; Zanin, Giuseppe; Guardo, Antonio Di

doi:10.1016/j.envpol.2013.10.002

Cited by 14 publications

(5 citation statements)

References 39 publications

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“…4.1 highlight the need to distinguish the impervious areas directly connected to the stream as a separate HRU, with a characteristically different hydrological behaviour, and to acknowledge the limited amount of substance input to those areas. The improved performance with increasing spatial resolution is in agreement with a previous study [Ghirardello et al, 2014]. The results also indicate that the heterogeneity of fast paths relevant for herbicide transport require rather detailed information about a catchment like the location of potentially active artificial shortcuts and tile drains.…”

Section: Model Comparisonsupporting

confidence: 90%

Characterizing fast herbicide transport in a small agricultural catchment with conceptual models

Ammann

Doppler

Stamm

et al. 2020

Journal of Hydrology

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Herbicide pollution in headwater streams due to agricultural practices is a major environmental concern and is characterized by episodic peak concentrations from fast transport paths. We rely on previous experimental studies in a small (1.2 km 2) agricultural catchment in the Swiss Plateau, to model dynamic diffuse herbicide pollution with emphasis on fast transport paths in a conceptual modelling framework at the catchment scale. We show how experimentalists' understanding of the fate of herbicides (perceptual model) can be translated into conceptual models considering sorption, degradation, and fast transport of water and chemicals facilitated by impervious surfaces, tile drains and artificial shortcuts. Different types of experimental data (streamflow, high-frequency concentration measurements, and soil-water distribution coefficients) are used in a joint Bayesian inference of model parameters. We assess the ability of different spatial configurations of hydrological response units in explaining observed heterogeneity in transport behaviour of two corn herbicides. Thereby, we find that (1) relatively simple conceptual models can provide a realistic description of herbicide fate in small agricultural catchments, (2) accounting for spray drift onto hard surfaces is necessary to avoid a severe model bias during the first rainfall event after application, and (3) including catchment-specific experimentalist knowledge about important elements like artificial shortcuts and tile drains leads to a reduction in

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Section: Model Comparisonsupporting

confidence: 90%

Characterizing fast herbicide transport in a small agricultural catchment with conceptual models

Ammann

Doppler

Stamm

et al. 2020

Journal of Hydrology

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“…If a model can reproduce eld data (collected under conditions that correspond to the assumptions and settings in the model), this strongly increases the credibility of the model and demonstrates that the model is suitable for the chemical and environmental system considered. Results from fate and exposure models have oen been found to agree well with eld data; this includes at the global level, 63,[106][107][108][109][110][111] and at the continental level [112][113][114][115] for selected persistent organic pollutants, and also in local and regional systems, such as the cases of diuron in a small, highly dynamic tropical catchment, 116 plant protection products in agricultural catchments at different scales, [117][118][119][120][121] PBDEs in a Swiss lake, 122 and PCBs in the Adriatic Sea. 123…”

Section: Model Evaluation By Comparison To Eld Datamentioning

confidence: 53%

“…121 Mountainous regions are characterized by rapid land response to precipitation, resulting in quick runoff chemical peaks and consequent potentially high peak exposure concentrations in aquatic ecosystems receiving such runoff. The model consisted of a dynamic water network model (built upon the Dyna model 136 ) and a spatially explicit terrestrial multimedia model 81,120 parametrized using specic scenario and emission data provided by the local authorities. The model incorporated an improved algorithm to calculate water runoff in steep slopes (average 30%, up to 80%) which allowed to more accurately calculate chemical runoff in these conditions.…”

Section: Models For Small Spatial Scales and Dynamic Scenariosmentioning

confidence: 99%

Environmental fate and exposure models: advances and challenges in 21^st century chemical risk assessment

Guardo

Gouin

MacLeod

et al. 2018

Environ. Sci.: Processes Impacts

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Environmental fate and exposure models are a powerful means to integrate information on chemicals, their partitioning and degradation behaviour, the environmental scenario and the emissions in order to compile a picture of chemical distribution and fluxes in the multimedia environment. A 1995 pioneering book, resulting from a series of workshops among model developers and users, reported the main advantages and identified needs for research in the field of multimedia fate models. Considerable efforts were devoted to their improvement in the past 25 years and many aspects were refined; notably the inclusion of nanomaterials among the modelled substances, the development of models at different spatial and temporal scales, the estimation of chemical properties and emission data, the incorporation of additional environmental media and processes, the integration of sensitivity and uncertainty analysis in the simulations. However, some challenging issues remain and require research efforts and attention: the need of methods to estimate partition coefficients for polar and ionizable chemical in the environment, a better description of bioavailability in different environments as well as the requirement of injecting more ecological realism in exposure predictions to account for the diversity of ecosystem structures and functions in risk assessment. Finally, to transfer new scientific developments into the realm of regulatory risk assessment, we propose the formation of expert groups that compare, discuss and recommend model modifications and updates and help develop practical tools for risk assessment.

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“…Rainfalls and sorption, the latter mainly related to soil properties, have a relevant role in the mobility of TBA and DET, as demonstrated by soil half-life values ranging from 18 to 167 days and between 27 and 113 days (Bottoni et al, 2013;Calderon et al, 2016;Grenni et al, 2012). Hence, when evaluating the pollution of water bodies at a basin scale by simulation models, heterogeneity must be accounted (Ghirardello et al, 2014). The predominant sorbent of organic pollutants in soils and sediments is the natural organic matter.…”

Section: Physicochemical Properties and Mobilitymentioning

confidence: 99%

Electrochemical removal of Terbuthylazine:Boron-Doped Diamond anode coupled with solid polymer electrolyte

Tasca

Puccini

Clematis

et al. 2019

Environmental Pollution

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Investigating the need for complex vs. simple scenarios to improve predictions of aquatic ecosystem exposure with the SoilPlus model

Cited by 14 publications

References 39 publications

Characterizing fast herbicide transport in a small agricultural catchment with conceptual models

Characterizing fast herbicide transport in a small agricultural catchment with conceptual models

Environmental fate and exposure models: advances and challenges in 21^st century chemical risk assessment

Electrochemical removal of Terbuthylazine:Boron-Doped Diamond anode coupled with solid polymer electrolyte

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Investigating the need for complex vs. simple scenarios to improve predictions of aquatic ecosystem exposure with the SoilPlus model

Cited by 14 publications

References 39 publications

Characterizing fast herbicide transport in a small agricultural catchment with conceptual models

Characterizing fast herbicide transport in a small agricultural catchment with conceptual models

Environmental fate and exposure models: advances and challenges in 21st century chemical risk assessment

Electrochemical removal of Terbuthylazine:Boron-Doped Diamond anode coupled with solid polymer electrolyte

Contact Info

Product

Resources

About

Environmental fate and exposure models: advances and challenges in 21^st century chemical risk assessment