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Direct Extrapolation of Biota-sediment Accumulation Factors (BSAFs)
Citation:
BURKHARD, L. P., P. M. COOK, AND M. T. LUKASEWYCZ. Direct Extrapolation of Biota-sediment Accumulation Factors (BSAFs). Presented at SETAC Annual Meeting, Tampa, FL, November 16 - 20, 2008.
Impact/Purpose:
Biota-sediment accumulation factors (BSAFs) for fish and shellfish were extrapolated directly from one location and species to other species, to other locations within a site, to other sites, and their combinations. The median errors in the extrapolations across species at a location were =2.0 fold for fish, mussel, and decapoda species groups. For extrapolations within a site for a specific species and across species, the median errors were =2.7 fold. For extrapolations across sites, slightly larger median errors were observed, i.e., =6.6 fold. The analyses were performed using a data set of more than 20,000 BSAFs spanning 393 chemicals/chemical combinations, 97 species, and fresh, marine, and tidal ecosystems. This was the first step in a process designed to rigorously examine the predictive power of reported BSAFs for estimating bioaccumulation in the absence of site and species specific data.
Description:
Biota-sediment accumulation factors (BSAFs) for fish and shellfish were extrapolated directly from one location and species to other species, to other locations within a site, to other sites, and their combinations. The median errors in the extrapolations across species at a location were =2.0 fold for fish, mussel, and decapoda species groups. For extrapolations within a site for a specific species and across species, the median errors were =2.7 fold. For extrapolations across sites, slightly larger median errors were observed, i.e., =6.6 fold. The analyses were performed using a data set of more than 20,000 BSAFs spanning 393 chemicals/chemical combinations, 97 species, and fresh, marine, and tidal ecosystems. This was the first step in a process designed to rigorously examine the predictive power of reported BSAFs for estimating bioaccumulation in the absence of site and species specific data.