If I was to get a job as a Site Manager (fingers crossed!) I would use Raster (thematic) to represent landcover including habitats, Raster (quantities) to represent elevation, Vector points to represent fauna sightings and Vector lines to represent ecological surveys done as line transects.
I hope I got that right. I still don’t understand why we should use Raster thematic instead of Vector polygons to record landcover types. Is it because Vector is based on coordinates whilst Raster is based on area?