Apps for relevant taxa near Leiden


Background and context

The ‘Leidse Ommelanden’ is a program in which 8 municipalities around Leiden (incl. Leiden itself) cooperate to take biodiversity aspects seriously into consideration in a number of land use (planning) projects and their site management. About 40 projects are currently started or in the planning. For each of these projects it is essential to monitor changes and analyze the effects of the measures and management in view of the biodiversity goals envisaged. Several ways of monitoring are possible, from professional to very simple. A major goal is to have a broad array of people involved, and that especially the general public visiting the various sites join in the monitoring efforts. This means a well-defined selection of taxa and easy to use identification and registration devices.

Objectives and goals

Naturalis is presently preparing a general shell for developing identification apps. The goal is ideally to have an automated identification service for mobile phones which provides preliminary identifications based on image processing of pictures taken and add to that locality and time/date, weather conditions, number of individuals observed, and can upload the observations to a central data base, and also can give an alert when a new round of monitoring is opportune (year schedule, weather forecasting). It also provides a pictorial and multi-entry key to check the automated identifications.

Methods, tasks and approach

Use the existing software to built relevant databases and reference images for a selected taxon (e.g. ladybugs, butterflies, bumblebees) and develop this into an App.

more ladybugs


Rutger Vos, Marco Roos, Berry van der Hoorn


Period and duration

ca. 9 months

Study and level

Biology, MSc