Species status for a given region. This tier was populated with information from regional species lists generated by the CetMap Working Group and regional experts. This tier was created at the temporal resolution of an entire year, such that if a species occurs at any time during the year, then all cells for that species/region that are not populated with Tier 1-4 data are designated as “expert-based presence”. It is important to note that this does not provide information on species presence during specific months.