Potential importance of spatial and temporal heterogeneity in pH, Al, and Ca in allowing survival of a fish population: a model demonstration

J. E. Breck, D. L. Deangelis, W. Van Winkle, S. W. Christensen

Research output: Chapter in Book/Report/Conference proceedingChapter

10 Scopus citations

Abstract

To provide a means of relating laboratory and field bioassay results to natural populations a Monte Carlo mathematical model was modified to track the movement and survival of fish in a body of water, represented by a two-dimensional grid, subject to acidification stress. It was assumed that the fish (adults or the less mobile and generally more sensitive early life stages) can sense realistic gradients of pH, Al and Ca (or alkalinity) and to move to reduce the chemical stress. Effects of food availability and habitat preference on fish movement are also considered. A function for accumulation and repair of damage is implemented within the model to relate mortality to the variable exposure history the fish accumulate by moving in the chemically heterogeneous environment. The influence of the strength and sensitivity of fish avoidance behavior, the presence or absence of the refuge, and the timing of multiple pulses on fish survival, were evaluated. -from Authors

Original languageEnglish
Title of host publicationEcological Modelling
Pages1-16
Number of pages16
Volume41
Edition1-2
StatePublished - Dec 1 1988

ASJC Scopus subject areas

  • Environmental Science(all)
  • Earth and Planetary Sciences(all)
  • Ecology, Evolution, Behavior and Systematics
  • Ecological Modeling
  • Ecology

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    Breck, J. E., Deangelis, D. L., Van Winkle, W., & Christensen, S. W. (1988). Potential importance of spatial and temporal heterogeneity in pH, Al, and Ca in allowing survival of a fish population: a model demonstration. In Ecological Modelling (1-2 ed., Vol. 41, pp. 1-16)