October 28, 2020
Hosted By Dr. Akira Terui
Animal populations are spatially and temporally structured, and understanding drivers of these dynamics is important for their conservation and management. Based on mark-recapture and long-term count data of resident (non-migratory) salmonids such as brooktrout and white-spotted char, I show that spatial heterogeneity is a common pattern in the riverscape and animal movement is a key demographic process that sustains spatially-structured populations. Stream salmonid populations are also highly variable over time, responding to inter-annual and seasonal variation in climate. I discuss challenges and opportunities of conserving coldwater fishes, including native brook trout in North Carolina, under anthropogenic threats such as climate change and habitat degradation and fragmentation.