Time series of station benthic infaunal biomass at DBO site #3 in the SE Chukchi Sea. There are some changes and declines in benthic infaunal biomass, except UTN5 (DBO #3 “hotspot” station at the head of Herald. Valley). We have also seen a shift at station UTN1 from bivalves to sand dollars since the 1970s.

• changes and some decline in benthic infaunal biomass
• except UTN5 (DBO “hotspot” station at head of Herald Valley
• also UTN1 shift bivalves to sand dollars