Fonds consists of two series:Marine Plants, and Water Quality (Aquatic Plant Management Program). The series document Newroths output as a professional aquatic biologist who was often supported by a large team of co-workers. The Marine Plant series includes unpublished manuscripts and publications on the biology of the red algal Genus Phyllophora and other members of the Family Phyllophoraceae, and related PhD research data, reference files, photographs, field and laboratory notes. This material makes reference to extensive dried plant and light microscope slide collections (mainly of North Atlantic, and Pacific Northwest marine plants) deposited in the Biology Department, University of Victoria.
The Water Quality series documents the evolution and development of the provincial governments Aquatic Plant Management Program (APMP), an innovative and comprehensive preventive and management program. Included are Newroths publications (1978-1994), information on introduced or exotic nuisance aquatic plants and animals in British Columbia fresh water systems, and approximately 100 technical reports on BC water bodies published by the province. The reports on APMP control and monitoring projects are grouped by the following geographic areas: Okanagan Lakes, Kalamalka and Wood Lakes, Cultus Lake, Christina Lake, Brannen Lake, Mara Lake (Little Shuswap), Shuswap Lake, Southern Vancouver Island and Lower Fraser Valley.