SIZE-SELECTIVE FISHERIES HARVEST

Replicated whole lake ecosystem manipulations were implemented by exhaustive size-selective harvesting of brook trout populations that were historically introduced to Canadian Rocky Mountain lakes in Banff, Yoho, and Kootenay National Parks. My lab focused on the ecological impacts of the harvesting on aquatic communities and food web dynamics. In doing so, my lab forged a new synthesis between the ecology of eDNA, organismal physiology, and ecosystem science that considerably advanced the application of eDNA to quantify freshwater fish abundance in nature. Collaboration with D. Fraser, Concordia University. (Dylan Fraser )

Beaulieu, J., M.C. Yates, D.J. Fraser, M.E. Cristescu, and A.M. Derry. 2025. eDNA provides accurate and precise estimates of abundance by integrating bioenergetics and particle mass-balance. In Review - Molecular Ecology.

Beaulieu J., W.B. Mordago-Gamero, D.J. Fraser, M.E. Cristescu, and A.M. Derry. 2025. eDNA reveals real-time signals of freshwater fish abundance and biomass. In Review - Molecular Ecology.

Trépanier-Leroux, D., M. Yates, L. Astorg, D.J. Fraser, S. Humphries, M. Cristescu, and A.M. Derry. 2024. Density-dependent effects of exotic brook trout on aquatic communities in mountain lakes revealed by environmental DNA and morphological taxonomy. 2023. Hydrobiologia 851: 1489-1512. DOI

Brookes, B., H.-B. Jeon, A.M. Derry, J.R. Post, S.M. Rogers, S. Humphries, & D.J. Fraser. 2022. Pooled sequencing reveals neutral and adaptive drivers of genomic change in introduced alpine brook trout populations. Ecology & Evolution 12(2): e8584. DOI

Yates, M.C, Glaser, D., Post, J., Cristescu, M.E., Fraser, D.J., and A.M. Derry. 2021. The relationship between eDNA particle concentration and organism abundance in nature is strengthened by allometric scaling. Molecular Ecology 30(13): 3068-3082. DOI