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MatrixGreen supports network-based (or graph theoretical) analyses of fragmented landscapes.

MatrixGreen was developed by Andreas Zetterberg (EMA research group, KTH) and Örjan Bodin (Stockholm Resilience Centre). The tool supports network-based (or graph theoretical) analyses of fragmented landscapes. The tools builds on ongoing research on landscape fragmentation, see for example Zetterberg, A., U. Mörtberg, and B. Balfors. 2010. Making graph theory operational for landscape ecological assessments, planning, and design. Landscape and Urban Planning 95(4): 181-191 . MatrixGreen is the main output of a recent project gathering a number of different land-use planners, ecologists and others in the Stockholm County. You can read more about the project here:

MatrixGreen webpage at Stockholm Resilience Centre

Verktyg för ekologiska samband (Swedish only)

Freely available
MatrixGreen is freely available for anyone to use under the condition that

1. it is not redistributed

2. the use is strictly non-commercial

3. it is properly cited: Bodin, Ö. and A. Zetterberg (2010) MatrixGreen User's Manual: Landscape Ecological Network Analysis Tool. Stockholm university and Royal Institute of Technology (KTH), Stockholm.
To get access to your own copy of MatrixGreen (MG), send an email to orjan.bodin'AT' or aze'AT' with the following information:

Your name
Your email
The name and address of your organization
Your position/role (e.g. researcher, consultant, etc)
You will then get information on how to download the setup files from an ftp server (i.e. you will get an IP address and a username/password combination). Read more about how to use and install the programme here:
MatrixGreen user manual (pdf 1.6 MB)

Status and support
The tool is still under development and should at this stage be considered as a prototype. The most recent version is 1.5.0. However, MatrixGreen is fully functional and it is currently being used in analyzing landscape fragmentation around the Stockholm County and elsewhere. We are unfortunately not able to provide 24/7 support for MatrixGreen, but if you encounter any problems, please send a mail to either orjan.bodin'AT' or aze'AT' and try to be as precise as possible about your issue.

Please note
We are currently aware of some problems when assessing links. This particularly applies when accessing links based on the least cost path approach (LCP). A fix is under way, however we recommend anyone to be very cautious and always visually inspect the results from the link assessments (for example, are there some links that are obviously missing?).

The development of MatrixGreen is a cooperation between the Environmental Management and Assessment research group, KTH, and Stockholm Resilience Centre. It was funded by:

- Stockholm County (Stockholms läns landsting)

- The Royal Swedish Academy of Agriculture and Forestry (Kungliga skogs- och lantbruksakademin)

- The Swedish Research Council (FORMAS)

- The Stockholm County Administrative Board (Länsstyrelsen i Stockholms län) and by the municipalities in Stockholm County that participated in the project.