Illustration of the level of landscape fragmentation measured by effective mesh size and represented as regular gridroot transformation for seff.

Map shows a regular grid at a different cell size for each countrie according to its value of fragmentation for FG-B2

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Methodology

The objective of this task is calculate “effective mesh size” as indicator of landscape fragmentation. Effective mesh size (Meff) is proportional to the probability of two points chosen randomly in region being connected. This probability is then converted into the size of a patch – the effective mesh size. The unit of Meff is that of area (e.g. Ha). This area corresponds to the size of “meshes” of regular network that has the same degree of fragmentation and it can be compared with the values of Meff from other regions. The smaller the effective mesh size, the more fragmented the landscape.

Additional information

The value of the effective mesh size per country is represented as a regular grid (a proxy cell size of meff in km2).

Illustration of the level of landscape fragmentation measured by effective mesh size and represented as regular gridroot transformation for seff.

Related content

References and footnotes