Development sprint #24: Nitrogen deposition depicted per habitat type

Monday, 24 November 2014

In sprint 24, the AERIUS development team built a new filter into Monitor that enables users to look at the nitrogen deposition on a certain area, per type of habitat. The area summaries in  Monitor have been expanded with additional maps and contain new data on locations as well as the particulars of restoration measures. The developers have started building the Register. Furthermore, a complete English version of the Calculator is also under construction.  

The AERIUS Monitor is used for determining the expected trend in nitrogen deposition as well as the room for development under the Integrated Approach to Nitrogen (PAS).  A major new functionality is that of filtering results per habitat type. If, for example, the option of ‘grey dunes’ is chosen, the maps will indicate, for that particular type of habitat, the total nitrogen deposition on hectare level, as well as the prognoses of the year under consideration and the distance to the critical load levels. In this example, it will show the locations with the highest load levels within grey dunes habitats.    

Another new Monitor functionality is one that provides the user with a choice between viewing all habitat types within a certain area or only those that are relevant for the PAS. The latter involves the nitrogen-sensitive habitat types or the habitats of protected species within that area. This also includes locations for which the habitat type is unknown.   

The Monitor’s export functionality has been expanded, enabling future users to download extensive data sets in the form of a GIS shape file or Excel database. This could be about total deposition, the deposition per sector or the difference in deposition compared to the base year.

Area summary

For all PAS areas, Monitor generates an area summary. This document has been under a fair amount of development, over the last period. An enormous gain is the stacking of restoration measures, which has led to a substantial reduction in the number of maps per area summary.  In addition, area authorities have also increasingly submitted correct data on locations and details of ecological restoration measures. This information is available within Monitor and is also presented in the area summaries.  


Following the completion of the technical foundation for Register earlier this year, developers were able to begin the actual construction of this product last October. Their first focus has been on those functionalities for which the design is reasonably certain. For other functionalities, developers are waiting until policy rules have been determined on the issuing of room for development for permits, reports and priority projects.