
Heidelibelle, Bild: M. Eugster
How many butterflies were observed in the area under investigation? Since when has the red-veined darter been present in this area? Answers can be found in the species list tool for ArcGIS Desktop, which enables species lists to be compiled quickly and easily. The tool can evaluate the following observation data:
The species lists contain the observations of species within a defined perimeter. In addition, all species observed in the vicinity of the perimeter are also listed. The surrounding area is specified in terms of observation distance for each species.
The species observations can be arranged in the species list in three time periods. The lists can be exported in Excel file format for further processing. Information on a species can also be called up direct from the associated species and habitat database.
Together with the department for nature conservation of the canton of Zurich (FNS), Ernst Basler + Partner has specified the species list tool. An extension of ArcGIS 9.3 in C#, the tool can be downloaded from the FNS website.