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| Responses | Percent | |
| Experimental | 711 | 54.6% |
| Observational | 632 | 48.5% |
| Data Models | 499 | 38.3% |
| Biotic Surveys | 446 | 34.3% |
| Abiotic Surveys | 442 | 33.9% |
| Remote-Sensed Abiotic | 358 | 27.5% |
| Remote-Sensed Biotic | 264 | 20.3% |
| Social Science Surveys | 251 | 19.3% |
| Interviews | 195 | 15.0% |
| Other | 80 | 6.1% |
