Aquatic Mercury in Food webs

A new paper came out in Science a while ago that I’ve been meaning to write about:
Cristol, D.A. et al. 2008. The movement of aquatic mercury through terrestrial food webs. Vol. 320. no. 5874, p. 335;  DOI: 10.1126/science.1154082
Along a mercury-contaminated river in Virginia, United States, terrestrial birds had significantly elevated levels of mercury in their [...]