Macoma balthica densities

This file contains the average Macoma balthica densities at each site sampled in box cores during the field surveys in 2003-2004. The minimum summer DO represents the minimum dissolved oxygen concentration (mg O2/L) observed at each site during that year. River is represent the river the sample was taken in, Date the day the sample was taken, and Site the nominal site at which the sample was taken. Note that sites changed location between years, (i.e. site M2 in 2003 in the York was at a different location than site M2 in 2004). Site location and raw DO measurements are available in the Sites and physical measurements files.