| selenium and mercury concentrations in california gulls breeding on the great salt lake, utah, usa. | we examined selenium (se) and mercury (hg) concentrations in adult california gulls (larus californicus) nesting on the great salt lake, utah, usa, during 2006 and 2007. during 2006, the mean se concentration (+/- standard error) was 18.1 +/- 1.5 microg/g in blood on a dry-weight basis and 8.1 +/- 0.4 microg/g in liver. during 2007, se concentrations were 15.7 +/- 1.5 microg/g in blood and 8.3 +/- 0.4 microg/g in liver; hg concentrations were 2.4 +/- 0.3 microg/g in blood and 4.1 +/- 0.5 microg/ ... | 2009 | 18767915 |