|Action A1. Cartography of the Posidonia fields.|
|Partner: Direcció general de Biodiversitat|
The action’s aim was to draw up detailed maps of the Posidonia fields found in SCI areas round the Balearic Islands.
Methods and Techniques:
Interpretations derived from both the ortophotos and the side-scan sonar were rigorously contrasted by verifications carried out at the locations themselves.
Verification and assessment of methods.
Once this action had been completed, full mapping of SCI areas included in the project was made available at a scale of 1:1.000.
All the information has been included in a system of geographic information,
GIS Posidionia which allows users to both view the information and request
bionomic and bathymetric details on the various areas studied.
The mapping was developed with side-scan sonar techniques for general depths of between 3 and 35 metres plus the interpretation of recently taken ortophotos of shallow waters at a depth between 0 and 3 metres. The resulting map scale was of 1:1000 and is of sufficient detail to provide accurate information on the favourable conservation of the fields as stipulated in the Habitats Directive regulating special areas of conservation.