Distribution & Frequency

This screen shows where a taxon has been observed and how often. It covers the selected node and everything below it in the tree, so opening it on Insecta summarises every beetle, fly and mayfly beneath it.

Access: Taxonomy → [node name] → the chart icon in the top-right.

Header

Below the taxon name a summary line reads: total sightings · how many are georeferenced · how many distinct locations.

Geographic Distribution

A map plots every georeferenced sighting. The view automatically zooms and centres to fit all points.

• Marker size reflects frequency — sightings within about 11 m of each other are grouped into one circle, and the circle's area grows with the number of sightings there. Circles with more than one sighting show the count.
• The badge in the section header shows which map source is in use — Swisstopo or System maps — following your choice in Settings → Maps:

- Swisstopo: official Swiss national map tiles are drawn behind the markers (requires internet). - System maps: a neutral grid is drawn instead of tiles. Marker positions use the same projection, so the spatial pattern remains accurate; tap Open in maps to view the area in Apple/Google Maps.

• Open in maps opens the centre of the distribution in map.geo.admin.ch (Swisstopo) or the system maps app.

If no sighting has a GPS position, the map area shows No georeferenced sightings instead.

Observation Frequency

Two bar charts summarise when the taxon was seen. Each bar is labelled with its count; empty periods keep a thin baseline stub.

> Frequency is based on sightings, not photos: each time you log an encounter it counts, so a single photographed individual seen five times contributes five records.