Atlas das Aves do Arquipélago da Madeira.

 
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FREQUENCY OF OCCURRENCE

The frequency of occurrence is determined exclusively from the systematic visits.

The data are the results of two visits of one hour each, divided into 10-minute periods, which results in a total of 12 periods per square (see Methodology).

The frequency of occurrence is therefore listed in the following manner:

- Habitat detected in a total of 1 to 4 periods – Low

- Habitat detected in a total of 5 to 8 periods – Medium

- Habitat detected in a total of 9 to 12 periods – High   

 

For further details and information, contact us through the official e-mail of the Project.

 

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