Method

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1. Data is collected in 170 landscape segments with an area of one square kilometre each.  The distribution of the samples ensures that with the efficient allocation of resources in the agricultural zones and in the main Agricultural Environmental Target regions, the state of and changes in as high a number of species, habitats and BPA types as possible can be ascertained.  

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2. Within these one-square-kilometre plots, studies are carried out every five years on a regular fifty-metre sampling raster. Only plots which form part of the agricultural landscape are studied.

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3. The habitat type and its biological quality are determined every 50 metres on a 10-square-metre area. On a 200-square-metre area, agricultural-landscape structures such as hedges, tall trees and bodies of water are recorded.

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4. Within each square kilometre, all plant species are determined on 20 selected plots of ten square metres each.

Vegetation surveys for the most part follow the Biodiversity Monitoring Switzerland method for surveying vascular plants for the Z9 indicator. The surveys are carried out on a surface area of 10m2. Unlike with Biodiversity Monitoring Switzerland, the number of passes in ALL-EMA is limited to one survey per annum.

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5. The areas studied are located by means of a GPS device. Data is entered directly into the smartphone.