Mathematical evaluation of behavioral deterrent systems to disrupt fish movement

D. P. Zielinski, M. Hondzo, V. R. Voller

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

Although behavioral deterrent systems, directed at exploiting fish sensory systems, are the common place in fisheries management, little is understood about the link between imposed sensory signals (e.g., sound intensity) and the resulting fish movements. Here, an advection-diffusion equation, incorporating a stimuli specific repulsive flux, is coupled with calculation of the generated stimulus field in order to model fish movement near a behavioral deterrent system. A stability analysis of this model is then used to determine the effectiveness of a deterrent stimulus to disrupt the natural movement of fish. Results of laboratory experiments of a bubble curtain to inhibit common carp, Cyprinus carpio, movement are used to develop the model and verify stability analysis predictions. This experimental data demonstrate that the acoustic stimulus (sound pressure levels) produced by bubble curtain systems can be sufficient to disrupt the natural movement of carp, i.e. inhibit fish passage. In addition, a sensitivity analysis is used to investigate how model stability is impacted by changes in movement behaviors (i.e. diffusion and advection rates). This coupling of a movement model and stability analysis could find general application in the assessment of behavioral deterrent systems, in particular at field sites where long term physical testing may be impractical.

Original languageEnglish (US)
Pages (from-to)150-159
Number of pages10
JournalEcological Modelling
Volume272
DOIs
StatePublished - Jan 24 2014

Bibliographical note

Funding Information:
This study was funded by the Minnesota Environmental and Natural Resources Trust Fund as recommended by the Legislative-Citizen Commission on Minnesota Resources (LCCMR). We are grateful for the anonymous reviewers for their valuable comments on the manuscript. The authors are also grateful for useful comments and guidance from Dr. Sorensen, director of the Minnesota Aquatic Invasive Species Research Center.

Keywords

  • Behavioral deterrent systems
  • Bubble curtain
  • Fish movement
  • Modeling
  • Stability analysis

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