Authors In addition to the core editors, a number of international experts in remote sensing, and biodiversity field measurement have contributed to the development of the Sourcebook and are thankfully acknowledged for their support. This Sourcebook is the result of a joint voluntary effort from more than 70 contributing authors from different institutions (that they may not necessarily represent). It is still an evolving document. The experts who contributed to the present version are listed under the section(s) to which they contributed and immediately below in alphabetical order: