| Abbreviation | Definition |
|---|---|
| HSEE | Hindman Stresses Ecology Econom |
| HSHE | Health Sciences and Human Ecology |
| HSLE | High School Lake Ecology |
| HWA | Hemlock Woolly Adelgid |
| IAA | Impact Assessment Agency |
| IAE | Institute for Applied Ecology |
| ICME | International Course in Microbial Ecology |
| IDEEL | Infectious Disease Epidemiology and Ecology Lab |
| IEE | Institute of Ecology and Evolution |
| IEEB | Institute of Ecology and Evolutionary Biology |
| IEEM | Institute of Ecology and Environmental |
| IEES | Institute of ecology and environmental sciences |
| IEES | Institute of Ecology and Environmental Studies |
| IERC | Integral Ecology Research Center |
| IERS | Industrial Ecology Research Services |
| IFE | Institute of Freshwater Ecology |
| IIEE | Indian Institute of Ecology and Environment |
| IMAE | International Master in Applied Ecology |
| IMAGINE | Innovative Modeling Across the Garden to Investigate Neighborhood Ecology |
| IMOG | Infancy Midwifery Obstetrics and Gynaecology |