Everything in VGS revolves around the concept of sites. In the abstract sense, a site is the container where data from studies are stored. In practice, a site is usually a physical location or area. A particular location or site can represent a piece of landscape of any size or shape, but all data from any and all studies associated with that location are stored within the site. When deciding what a site represents, separate out any differences in treatment or management into separate sites. For example, if vegetation sampling will be conducted on adjacent burned and unburned areas, a separate site should be created for the burned area and for the unburned area. An enclosure should be a different site than areas outside the enclosure. These distinctions are important in order to avoid data from sites with several treatments to not be merged or compared inappropriately during analysis. Another way to look at it - only data sampled from the same piece of ground (the same site) should be stored in a particular VGS site.