Parks Victoria - Marine Mapping Education Resource Kit
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Activity 4: Making Marine Habitat Maps

1. Survey Area

The area to be surveyed is identified. In this example the area of interest is marked by the red line.

While this is a shallow water area and the bottom can be seen in the photo the same approach is used in mapping deeper areas.

 

 

2. Texture Image

The image from the multibeam shows textures that relate to the different types of materials found on the sea floor. This data is recorded and can later be analysed and compared with photos to predict what habitats may be found there.

   

3. Video Surveys

A video camera is towed over the survey area toget images of what is living on the sea floor. In this image the red line represents the track of the videocamera as it was towed around the park.

Images collected here are then matched with agreed habitat types.

This is very important in deep waters as the bottom can not be seen.
   

4. Constructing the Map

Finally the map is generated using all of the information collected.

Different colours on the map show the different habitat types that are found.

This information is very useful to the managers of the parks. Such knowledge can assist in determining areas that might be sensitive to disturbance from anchors that ships need to avoid, or the likely effects from pollution on land. To help promote recreational activities in the parks good locations for recreational snorkellers and divers to visit the park can be identified. In protecting the park from exotic marine pests (such as the Northern Pacific Seastar) predictions can be made about where they might invade and managers can use this information to remind people to be vigilant and avoid spreading marine pests.

   

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