Survey Methods
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چکیده
No single survey methodology will meet the needs of all situations. There are many considerations to be taken in to account when designing a survey, such as the purpose, desired outputs and accuracy, attributes of the area to be surveyed, the data to be collected, time and personnel constraints, etc. Provided here are some general guidelines for conducting surveys on open-space lands with the purposes of 1) detection – determining presence or absence of SOD, 2) delineation – mapping disease distribution, and/or 3) characterization – providing various descriptors of the disease and its impacts. A survey may have more than one purpose and various methods may be used to achieve the desired outcomes. The methods described are intended to provide a general accounting of the disease situation on a given piece of land. They may be sufficient alone or may serve as a means of collecting baseline data that can be used for refining future surveys in the same or similar areas.
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