The survey module manages data from temporary and permanent plots which may be small, irregularly shaped survey sites or industrial scale forest grid blocks. The simplest samples may only register species presence. More complex surveys may include many more measurements. For example, a forest survey may add data about trees - tree numbers with their provisional identification, diameter, height, stem form, field images, specimen vouchers and more, depending on the research objectives. Plot data, combined with other data stored in BRAHMS, can be used for diversity and bio-quality analysis.