Manuel Colunga-Garcia, Roger A. Magarey, Robert A. Haack, Stuart H. Gage, and Jiaquo Qi. 2010. Enhancing early detection of exotic pests in agricultural and forest ecosystems using an urban-gradient framework. Ecological Applications 20:303–310.

Appendices

Appendix A: Description of data sources and computation of the urban gradient for agricultural and forest ecosystems.
Ecological Archives A020-007-A1.

Appendix B: Description of the criteria for the selection of pests, including names and information sources.
Ecological Archives A020-007-A2.

Appendix C: Description of the process to determine the risk zones.
Ecological Archives A020-007-A3.

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