| Year | Position | Institution |
| 1976 | Ecosystems Center 12 | |
| 1977 | Ecosystems Center 4 |
| Year | Role | Course |
| 1976 | Assistant | Ecology 1976 |
| 1976 | Assistant | Year-In-Science (I975-I976) 1976 |
| 1977 | Assistant | Ecology 1977 |
| 1977 | Research Assistant | The Ecosystems Center 1977 |
| 1978 | Research Assistant | The Ecosystems Center 1978 |
| 1979 | Staff | The Ecosystems Center 1979 |
| 1980 | Staff | The Ecosystems Center 1980 |
| 1981 | Staff | The Ecosystems Center 1981 |
| 1982 | Staff | The Ecosystems Center 1982 |
| 1983 | Staff | The Ecosystems Center 1983 |