Date of Award

1999

Degree Type

Thesis

Degree Name

M.Sc.

Department

Biological Sciences

First Advisor

Brandt, D.

Keywords

Biology, Ecology.

Rights

CC BY-NC-ND 4.0

Abstract

I used a novel, stationary hydroacoustic sampling technique to assess the temporal variation of Lake Ontario's ability to support chinook salmon (Oncorhynchus tshawyscha) habitat at two time scales. Hydroacoustics provides a highly effective, non-obtrusive means of sampling fish distributions within the pelagic environment, at very high temporal resolution. These data, along with more conventional measures of water quality (temperature profiles), allowed me to develop and apply a temporally explicit modelling framework which quantified, and described changes in, chinook habitat quality over time. I then examined actual chinook distribution collected acoustically to quantify chinook salmon habitat preference at both the seasonal and diel time scales. Predicted chinook habitat preference was determined using three habitat preference models, namely; behavioural thermoregulation, prey-taxis or optimal foraging, and behavioural bioenergetics. Each model's predicted distribution was compared with actual chinook distributions over time. (Abstract shortened by UMI.)Dept. of Biological Sciences. Paper copy at Leddy Library: Theses & Major Papers - Basement, West Bldg. / Call Number: Thesis1999 .R69. Source: Masters Abstracts International, Volume: 39-02, page: 0444. Adviser: S. B. Brandt; G. D. Haffner. Thesis (M.Sc.)--University of Windsor (Canada), 1999.

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