Jeanette Bruce

Current position: MSc student

Degree: BSc, Memorial University

email: jeb15@sfu.ca

Pacific salmon represent an important potential source of nutrients that can cross ecosystem boundaries when the fish return from the sea to spawn in freshwaters.  Nutrients can be derived from salmon eggs and from their carcasses after spawning.

I am studying prickly and coastrange sculpins to understand how such cross-boundary subsidies can affect resident stream fishes.  I have conducted my fieldwork in 28 coastal streams in the Great Bear Rainforest on the central coast of BC. Measurements of sculpin otoliths and body metrics show that increased density of spawning pink and chum salmon results in faster growth in resident sculpin populations.  Sculpins in high-density salmon streams reach their maximum size  earlier than those in streams with fewer salmon. I am now matching these results to lipid analyses and stable isotopes.