Long ago when Dioxins and PCBs were big news, Tom worked with a real scientist by the name of Ross Norstrom. Together they published some papers in some pretty good journals. These talked about how contaminants got from the environment into Herring Gulls and the Great Lakes. Tom was the data analyst in this work, and Ross led the way.
The links below lead to scanned copies of some of the papers. The best summary paper is at Environmental Science & Technology 22(2). Wildlife monitoring, modeling, and fugacity. Indicators of chemical contamination. Authors Tom Clark, Kathryn Clark, Sally Paterson, Donald Mackay and Ross J. Norstrom. February 1988, Volume 22(Issue 2) Page p.120To-127.