professional organization membership

American Association for the Advancement of Science (Fellow)
American Botanical Society
American Institute of Biological Sciences
American Microscopical Society
American Society of Limnology and Oceanography
Cushman Foundation for Foraminiferal Research (Fellow)
Freshwater Biological Institute (Cumbria, Great Britain)
National Association of Biology Teachers
National Association for Research in Science Teaching
New York Academy of Sciences
Sigma Xi Scientific  Society
Society of Protozoologists
The Oceanography Society (Charter Member)