Fixed point
photography is a technique often employed by conservation biologists and environmental
scientists in order to gain a pictorial idea of how an area or landscape
changes either over time or from one season to the next. This is also one of
the most effective and robust methods of monitoring vegetation change,
especially in areas such as South Africa where bush fires can be common.
The most
important consideration is that each site should be permanently and clearly marked.
Finding old sites is extremely difficult, especially if differing researchers
are completing each set of photographs. The use of a GPS allows you to
accurately locate the spot from where the photograph must be taken, and
instructions as to the direction (for example South 185°) can be given. Further, in order to
minimise inaccuracies, the same camera should be used to prevent any variances being
attributed to a different camera setting/function.
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