![[logo] US EPA](http://www.epa.gov/epafiles/images/logo_epaseal.gif){kind=logo}
Monitoring and Assessment Branch
The Monitoring and Assessment Branch conducts research to provide the
scientific basis to monitor condition and trends of the Nation’s
aquatic ecosystems, and to conduct local, regional and national assessments.
Research and support activities focus on developing sound scientific solutions
to key monitoring and assessment issues, demonstrating the efficacy of
these new approaches, and facilitating development of the state, tribal
and local infrastructure necessary to implement these approaches.
| Timothy Gleason | Branch Chief |
| Suzanne Ayvazian | Research Ecologist |
| Barbara Bergen | Research Chemist |
| Patricia Bradley | Environmental Program Manager |
| Dan Campbell | Research Ecologist |
| Donald Cobb | Research Physical Scientist |
| Jeff Hollister | Research Ecologist |
| Kristen Hychka | Geographer |
| Darryl Keith | Oceanographer |
| John Kiddon | Research Physical Scientist |
| Marisa Mazzotta | Economist |
| Bryan Milstead | Ecologist |
| William Nelson | Research Physiologist |
| Carol Pesch | Research Aquatic Biologist |
| Charles Strobel | Research Biologist |
| Henry Walker | Research Environmental Scientist |