The bright and dark sides of Pacific salmon biotransport

Each year millions of Pacific salmon make a grand journey from the ocean to their freshwater spawning grounds at the end of their life cycles. This migration has rippling effects through food webs and ecosystems along the way. Whether they decompose or are consumed by other animals, these salmon deliver both nutrients and contaminants they have accumulated in their bodies after spending most of their lives growing at sea. A team of researchers set out to study the transport of these nutrients and contaminants and trends as the salmon community changed over 40 years.