1. Use of PSA data in biological studies
Roger Coggan
Marine Habitats & Mapping Team
Environment & Ecosystems Division
PSA Workshop, Feb 09

2. How do you want to use the PSA data?
National
Region
Area
Site
Feature
Direct mapping:
Plotting observations
Predictive mapping:
Modelling distribution

3. How do you want to use the PSA data?
What are you trying to achieve?
Top-down:
Imposing existing classification
scheme on observation data
Bottom up:
Analyse the data, use associations
to ‘create’ classes
scheme
sample
data

4. Hierarchical Habitat Classification
Variables:
Level Depth & Substrate
Level Energy / exposure
Level Life form
Level Species

5. PSA – what resolution is fit-for-your purpose?
4 classes

6. PSA – what resolution is fit-for-your purpose?

7. Seabed usage oil wind farms aggregates sewage nuclear wave fishing
navigation
conservation

15. Hamon Grab – is it a suitable sampler for PSA?