Assessing Conservation Status: The UK Approach - JNCC

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Assessing Conservation Status: The UK Approach ii. iii. Consider range Unfavourable-Bad. Assume 1994 baseline less than 75% of FRP (FRP = >1994 population/0.75) Consider population Favourable i.e. in 1994 sufficiently large to support viable population. If 1994 population not known use current population value. Second Report by the United Kingdom under Article 17 on the implementation of the Directive from January 2001 to December 2006 35
Assessing Conservation Status: The UK Approach Note 2. Habitat Decision trees These provide guidance as to the appropriate conclusion for each of the four assessment parameters and the values for the Favourable Reference Range (FRR) and Favourable Reference Area (FRA). HABITAT RANGE DECISION TREE a. Trend in range Consider if overall range since 1994 has been stable or has it increased or decreased? … if DECREASED then go to b … if STABLE go to c … if INCREASED go to d … if UNKNOWN go to e b. Range decreased since 1994 Consider if rate of decline in range has been more or less than 1% per year? … if >1% per year conclude UNFAVOURABLE–BAD (assume 1994 level is less than 90% of FRR) … if
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Assessing Conservation Status: The UK Approach - JNCC

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