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9.1 Habitats



To score habitats, experts will follow these steps:

  1. Estimate a consensus score for the condition of habitats in the Best 10% and Worst 10% of the habitat (eg. relative to 1900).  Score both the area and condition of habitat; for example if it is estimated that 10% of the area of habitat has been destroyed since the benchmark date then the Worst 10% of that habitat will have a score of 1.  Conversely, if 100% of the habitat area is in the same (pristine) condition that prevailed in relation to the benchmark, then the Worst 10% of that habitat will have a score of 8.  

  2. Estimate a consensus score for the condition of the habitats in Most areas of the habitat (eg. relative to 1900).

  3. Assign a Confidence grade for the Condition estimates (High, Medium, Low).

  4. Estimate the trends for each of Best 10%, Worst 10%, Most (Improving, Declining, Stable) over the last 5 years.

  5. Assign a Confidence grade for the Trend estimates (High, Medium, Low).

  6. Identify the main anchor references, and any commentary/notes in any relevant column for the habitat.

 

Habitats

Grading statements for habitats that occur in the country and/or region under consideration.

Very Good (7-8)

The habitat type is essentially structurally and functionally intact and able to support all dependent species

Good (5-6)

There is some habitat loss or alteration in some small areas, leading to minimal degradation but no persistent substantial effects on populations of dependent species

Poor (3-4)

Habitat loss or alteration has occurred in a number of areas, leading to persistent substantial effects on populations of some dependent species

Very Poor (1-2)

There is widespread habitat loss or alteration, leading to persistent substantial effects on many populations of dependent species