Known as the mother of Canadian science fiction, Phyllis Gotlieb, the novelist and poet died yesterday in a Toronto hospital. She was 83. Her first novel, Sunburst, was published in 1964. Gotlieb won the Aurora Award for Best Novel in 1982 for A Judgment of Dragons. Her last novel, Birthstones, was published in 2007. She is survived by her husband, three children and four grandchildren.