Time modelled as an explicit feature to quantify habitat quality and preference of chinook salmon (Oncorhynchus tshawyscha) in western Lake Ontario at two time scales: The relative importance of environmental conditions and some implications.
Date of Award
Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-No Derivative Works 4.0 International License.
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.
Roy, Denis., "Time modelled as an explicit feature to quantify habitat quality and preference of chinook salmon (Oncorhynchus tshawyscha) in western Lake Ontario at two time scales: The relative importance of environmental conditions and some implications." (1999). Electronic Theses and Dissertations. 4390.