Two wildlife exposure models to assess impacts at the individual and population levels and the efficacy of remedial actions

Freshman, Jonathan S.; Menzie, Charles A.

doi:10.1080/10807039609383628

Cited by 41 publications

(27 citation statements)

References 10 publications

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“…Spatially explicit relationships have been considered in site assessments in many forms for many years (Freshman and Menzie 1996;Wickwire and Menzie 2003;Gaines et al 2005). Historically, ecological risk assessors have accounted for species-specific spatial requirements using the home range (area over which a species' activities occur, excluding migration) or foraging area (area over which food is sought (USEPA 1993).…”

Section: Spatially Explicit Exposure Modelsmentioning

confidence: 99%

Spatially explicit ecological exposure models: A rationale for and path toward their increased acceptance and use

Wickwire

Johnson²,

Hope

et al. 2011

Integr Envir Assess & Manag

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Spatially explicit wildlife exposure models have been developed to integrate chemical concentrations dispersed in space and time, heterogeneous habitats of varying qualities, and foraging behaviors of wildlife to give more realistic wildlife exposure estimates for ecological risk assessments. These models not only improve the realism of wildlife exposure estimates, but also increase the efficiency of remedial planning. However, despite being widely available, these models are rarely used in baseline (definitive) ecological risk assessments. A lack of precedent for their use, misperceptions about models in general and spatial models in particular, non-specific or no enabling regulations, poor communication, and uncertainties regarding inputs are all impediments to greater use of such models. An expert workshop was convened as part of an Environmental Security Technology Certification Program Project to evaluate current applications for spatially explicit models and consider ways such models could bring increased realism to ecological exposure assessments. Specific actions (e.g., greater accessibility and innovation in model design, increased communication with and training opportunities for decision makers and regulators, explicit consideration during assessment planning and problem formulation) were discussed as mechanisms to increase the use of these valuable and innovative modeling tools. The intent of this workshop synopsis is to highlight for the ecological risk assessment community both the value and availability of a wide range of spatial models and to recommend specific actions that may help to increase their acceptance and use by ecological risk assessment practitioners.

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Section: Spatially Explicit Exposure Modelsmentioning

confidence: 99%

Spatially explicit ecological exposure models: A rationale for and path toward their increased acceptance and use

Wickwire

Johnson²,

Hope

et al. 2011

Integr Envir Assess & Manag

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“…Efforts to bring habitat considerations into ecological risk assessment have been promoted since the mid-1990s (Freshman andMenzie 1996, Rand andNewman 1998). Reasons to consider habitat requirements of the species of interest were to take into account spatial differences in contaminant concentrations that typically occur across foraging areas and to relate the proportion of a local population likely to be exposed to the contaminants.…”

Section: Habitatmentioning

confidence: 99%

Populations, Habitat, and Ecological Systems: Elusive but Essential Considerations for a Landscape Perspective

Kapustka

2010

Environmental Risk Assessment and Management From a Landscape Perspective

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“…For larger, free-roaming species, the area of contamination may be a small percentage of the homerange. One way to approach this problem is to estimate the percent of habitat impacted and percent of home range used 8,24,25 . Another is for the assessor to randomly walk individual vertebrates through a contaminated landscape to forage 26 .…”

Section: Spatial Considerationsmentioning

confidence: 99%

Current Directions in Screening-Level Ecological Risk Assessments

Carlsen

Efroymson

2001

All Days

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Two wildlife exposure models to assess impacts at the individual and population levels and the efficacy of remedial actions

Cited by 41 publications

References 10 publications

Spatially explicit ecological exposure models: A rationale for and path toward their increased acceptance and use

Spatially explicit ecological exposure models: A rationale for and path toward their increased acceptance and use

Populations, Habitat, and Ecological Systems: Elusive but Essential Considerations for a Landscape Perspective

Current Directions in Screening-Level Ecological Risk Assessments

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