# Commission Regulation (EC) No 1737/2006 of 7 November 2006 laying down detailed rules for the implementation of Regulation (EC) No 2152/2003 of the European Parliament and of the Council concerning monitoring of forests and environmental interactions in the Community, Division

Extent: E+W+S+N.I.

Further background information on ecological processes on the plot, as well as an early warning system on events affecting the condition of the trees, could be obtained by recording the most obvious effects of biotic and abiotic (damaging) events and phenological phenomena. This is of special interest for the evaluation of Level II data at the national level.
The observations and recordings should be easy and simple, and limited to:
Occurrence of flushing, color change and leaf/needle fall
Biotic damage (pests and/or diseases)
Abiotic damage (e.g. frost, wind, hail).

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Source: https://www.legislation.gov.uk/eur/2006/1737/annex/I/chapter/12/division/III/division/1 (the official version)
Page: https://openlegislation.uk/eu-regulation-2006-1737/annex-I/chapter-12/division-III/division-1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.