New landscape management behaviour
From code revision 539 onwards it is possible to reduce the size of the landscape map being simulated by consolidating identical polygons into a single polygon ref (e.g. all gardens can be referenced by one polygon reference id). This reduces size of the landscape in memory, and speeds up load times a little. Note when using this set renumbering of polygons to true and then on first use you have to re-calculate field openness for the map. This is because you now have a different number of... (see more)
Important Change to ALMaSS Landscapes
From code version 501 ALMaSS will no longer be able to read old polygon reference files.
This is due to a change of status for orchards and young forest which now need to have a farm manager. Attempts to use old files with new codes will generate an error in errorfile.txt claiming that a farm polygon does not have an owner.
The fix for old files is to assign a owner to all polygons of type 55 & 56 e.g. farm 0. This should have no knock on effects (ie... (see more)
New ALMaSS collaborators from Portugal
Welcome to Sonia, Alberto, Antonio and Joana, from Braganca and Coimbra in Portugal!
Sonia and Alberto are part of a new project to extend the ALMaSS system to model Portuguese landscapes, and in particular olive growing regions. New additions to the ALMaSS species will be needed here, starting with a Collembola model. Once properly underway a short description of the project and its progress will be available on the discussion forum.
Antonio and Joana are both from Coimbra... (see more)
ALMaSS paper on recovery
"Recovery based on plot experiments is a poor predictor of landscape-level population impacts of agricultural pesticides"
Environmental Toxicology Chemistry 2014;33:1499–1507.
Current European Union regulatory risk assessment allows application of pesticides provided that recovery of nontarget arthropods in-crop occurs within a year. Despite the long-established theory of source-sink dynamics, risk assessment ignores depletion of surrounding populations... (see more)
Goose threads moved to Goose Modelling
I have moved the goose threads under a new discussion group called goose modelling. We can more easily discuss new matters in new threads in that group.