Modeling the long-term effect of PCBs on Everglades fish communities

Al Rabai Ah Hussam, Hock Lye Koh, Donald DeAngelis, Hooi Ling Lee

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Fish communities are regularly exposed to a large number of natural and synthetic toxic chemicals, whose harmful effects, both short-term and long-term, need to be studied. Mathematical simulation models are known to be useful tools in the assessment of both acute and chronic effects. A time-concentration- effect model has been developed to assess the long-term effect of PCBs on multi generations of fish communities in the Florida Everglades. The term "fish" is used here generically to refer to five functional fish groups (FGs), two having small and two having large adult size, and a crustacean (crayfish), each of which are further composed of several age classes. Several contaminant concentration scenarios are analyzed in the simulations, subject to mortality and hatchability failure. The model predicts the population response time series for each FG, based upon exposure concentration and duration. Model results indicate that a concentration of 0.1 μgl-1 could have adverse effects on survival and reproduction success for Everglades fish communities. For comparison, the USEPA has stipulated a standard of 0.014 μgl-1 for the protection of freshwater fish from chronic effects and a standard of 1.0 μgl-1 from acute effects. Hopefully, the model may be further developed to assist in the formulation of policy or regulations concerning aquatic ecological risk to protect the aquatic ecosystem of the Everglades.

Original languageEnglish
Pages (from-to)73-81
Number of pages9
JournalWetlands Ecology and Management
Volume13
Issue number1
DOIs
StatePublished - Feb 1 2005

Fingerprint

long term effects
PCB
acute effects
fish
modeling
United States Environmental Protection Agency
toxic substances
crayfish
freshwater fish
age structure
time series analysis
simulation models
mathematical models
Crustacea
adverse effects
duration
fish communities
long-term effect
age class
aquatic ecosystem

Keywords

  • Ecotoxicology
  • Florida Everglades
  • LC50
  • LT50
  • Modeling
  • PCBs
  • Time-concentration-response model

ASJC Scopus subject areas

  • Aquatic Science
  • Ecology

Cite this

Modeling the long-term effect of PCBs on Everglades fish communities. / Hussam, Al Rabai Ah; Koh, Hock Lye; DeAngelis, Donald; Lee, Hooi Ling.

In: Wetlands Ecology and Management, Vol. 13, No. 1, 01.02.2005, p. 73-81.

Research output: Contribution to journalArticle

Hussam, Al Rabai Ah ; Koh, Hock Lye ; DeAngelis, Donald ; Lee, Hooi Ling. / Modeling the long-term effect of PCBs on Everglades fish communities. In: Wetlands Ecology and Management. 2005 ; Vol. 13, No. 1. pp. 73-81.
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