skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: A study of bioaccumulation occurring in a spatial and temporal aquatic environment

Abstract

The impacts of spatial, temporal, and hydrodynamics on the bioaccumulation in the Chernobyl cooling lake were evaluated using a two-dimensional aquatic exposure assessment model. The model framework integrated spatial and temporal heterogeneity effects of radioactive environments, changes in abundance and distribution of aquatic populations, spatial and temporal dependent (or density-dependent) radionuclide ingestion rates, and population biomass changes. Plankton population growth was integrated into the hydrodynamic-transport model to determine the plankton biomass density change and distributions. The exposure estimation was conducted in a two-dimensional finite element mesh which was used in the hydrodynamic-transport model. Results indicated that bioaccumulation factors with the assumption of steady-state and homogeneous conditions significantly over-estimated the radionuclide concentration accumulated in fish. The impacts of changes of biomass distributions and variable ingestion rates on the bioaccumulation varied spatially and temporally. Results also revealed that a higher radiobiological turn-over rate could be a dominate factor in determining the radionuclide fate in biota when the ecological processes, such as population growth, were relatively slow. Two different predator-prey relationships were applied. Their impacts on the bioaccumulation of fish varied spatially and temporally. Overall, the results suggest that a more realistic physical description of contaminated environments and ecosystems is necessary in studyingmore » bioaccumulation occurring in nature.« less

Authors:
; ;  [1]
  1. SENES Oak Ridge Inc., TN (United States). Center for Risk Analysis
Publication Date:
OSTI Identifier:
191321
Report Number(s):
CONF-9511137-
ISBN 1-880611-03-1; TRN: IM9610%%322
Resource Type:
Conference
Resource Relation:
Conference: 2. Society of Environmental Toxicology and Chemistry (SETAC) world conference, Vancouver (Canada), 5-9 Nov 1995; Other Information: PBD: 1995; Related Information: Is Part Of Second SETAC world congress (16. annual meeting): Abstract book. Global environmental protection: Science, politics, and common sense; PB: 378 p.
Country of Publication:
United States
Language:
English
Subject:
22 NUCLEAR REACTOR TECHNOLOGY; 21 NUCLEAR POWER REACTORS AND ASSOCIATED PLANTS; 56 BIOLOGY AND MEDICINE, APPLIED STUDIES; COOLING PONDS; CONTAMINATION; FISHES; PLANKTON; FOOD CHAINS; RADIOISOTOPES; BIOLOGICAL ACCUMULATION; CHERNOBYLSK-4 REACTOR; TWO-DIMENSIONAL CALCULATIONS; PREDATOR-PREY INTERACTIONS; FINITE ELEMENT METHOD; MATHEMATICAL MODELS

Citation Formats

Feng, Y, Bartell, S M, and Miller, L F. A study of bioaccumulation occurring in a spatial and temporal aquatic environment. United States: N. p., 1995. Web.
Feng, Y, Bartell, S M, & Miller, L F. A study of bioaccumulation occurring in a spatial and temporal aquatic environment. United States.
Feng, Y, Bartell, S M, and Miller, L F. 1995. "A study of bioaccumulation occurring in a spatial and temporal aquatic environment". United States.
@article{osti_191321,
title = {A study of bioaccumulation occurring in a spatial and temporal aquatic environment},
author = {Feng, Y and Bartell, S M and Miller, L F},
abstractNote = {The impacts of spatial, temporal, and hydrodynamics on the bioaccumulation in the Chernobyl cooling lake were evaluated using a two-dimensional aquatic exposure assessment model. The model framework integrated spatial and temporal heterogeneity effects of radioactive environments, changes in abundance and distribution of aquatic populations, spatial and temporal dependent (or density-dependent) radionuclide ingestion rates, and population biomass changes. Plankton population growth was integrated into the hydrodynamic-transport model to determine the plankton biomass density change and distributions. The exposure estimation was conducted in a two-dimensional finite element mesh which was used in the hydrodynamic-transport model. Results indicated that bioaccumulation factors with the assumption of steady-state and homogeneous conditions significantly over-estimated the radionuclide concentration accumulated in fish. The impacts of changes of biomass distributions and variable ingestion rates on the bioaccumulation varied spatially and temporally. Results also revealed that a higher radiobiological turn-over rate could be a dominate factor in determining the radionuclide fate in biota when the ecological processes, such as population growth, were relatively slow. Two different predator-prey relationships were applied. Their impacts on the bioaccumulation of fish varied spatially and temporally. Overall, the results suggest that a more realistic physical description of contaminated environments and ecosystems is necessary in studying bioaccumulation occurring in nature.},
doi = {},
url = {https://www.osti.gov/biblio/191321}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Dec 31 00:00:00 EST 1995},
month = {Sun Dec 31 00:00:00 EST 1995}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share: