The imminent removal of four dams along the Klamath River represents a unique opportunity to study the impacts of large-scale dam removal on river ecology. To establish an invaluable genetic baseline, the study team (Genidaqs, RES) collected and preserved over 400 DNA and RNA samples from locations across the Klamath River before dam removal.

This “molecular library” provides a genetic snapshot of which fish and other aquatic species were present prior to Dam removal and where higher abundances may occur. As dam removal alters the river ecosystem, we plan to compare this pre-removal genetic catalogue with future eDNA surveys to quantify resulting changes in biodiversity and species distribution.

Environmental DNA analysis allows non-invasive, cost-effective monitoring compared to traditional survey methods. Our team took care to capture sufficient genetic material for future genomic analyses like species detection, community metabarcoding, and population demography inference.

This genetic time capsule will enable unprecedented study of how dam removal impacts aquatic biology at the population scale as well as demonstrate a process for how these kinds of large-scale collaborative assessments could occur. 

If you’re interested in collaborating, we’d love to discuss analysis plans to unlock insights from this rare ecological dataset. Let’s connect to explore partnerships to better understand and support river restoration!