Photographic Capture-Recapture

 - Aug 15, 2007
References: news.mongabay
Elephants in Asia are getting their own photo IDs now in an effort to help monitor their survival rates and track their movements. Unlike African elephants where both genders have tusks, valuable ivory is only found on male Asian elephants, making them a huge target for poachers. Using "photographic capture-recapture" surveys, researchers are taking photos of individual elephants - in only 80 days they were able to get images of 2400 individuals. "These data revealed some 134 individual male elephants in a population of 991 elephants, with an adult male/female ratio of 1 to 4.33," according to the Mongabay News.