We introduced the idea of collecting information on wildlife
corridors to attendees of the December 2007 Tanzania Wildlife Research
Institute Conference in Arusha, Tanzania. Email requests
were also sent out opportunistically to government officers, university
research scientists, NGO personnel and conservation area
managers across the country for information on the location, status,
use and threats to each corridor. We expanded our list of contacts
(and corridors) as information accumulated. In the few
situations in which we received no response we went to grey literature.
On the basis of these reports, we subjectively classified corridors
into Extreme denoting probably less than 2 years remaining;
Critical, probably less than 5 years remaining; and Moderate, less
than 20 years remaining.