B. Levinson

The U.S. Environmental Protection Agency's Environmental Monitoring and Assessment Program.

J. Stoddard, K. Jones, D. Bolgrien, 2004 .

Ecological research in the office of research and development at the U.S. Environmental Protection Agency: An overview of new directions

G. Veith, R. Linthurst, M. Slimak, 2000 .

Ecological Thresholds: The Key to Successful Environmental Management or an Important Concept with No Practical Application?

Monica G. Turner, N. LeRoy Poff, Arthur J. Gold, 2006, Ecosystems.

Rationale for a New Generation of Indicators for Coastal Waters

Marius Brouwer, H. Paerl, G. Niemi, 2004, Environmental health perspectives.

Remote sensing and the EPA Estuarine and Great Lakes Research Program

B. Levinson, 2005 .