Many thanks for taking the time to reply.
My understanding is that a table fragment (partition) exists within the dbspace, so a new table partition that is created (each day in our case) should reside in the assigned dbspace.
Therefore, as no new dbspaces are being created, or chunks added to the dbspace, a level 0 backup shouldn't be needed.
If that's faulty logic, please let me know!
Thanks again.