Abrupt Decline in a Protected Population of Siamangs (Symphalangus syndactylus) in Southern Sumatra
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Between 2011 and 2016, approximately 50% of siamangs in the Way Canguk Research Area disappeared, including members of 7 of 12 habituated groups. Demographic data from 1998 to 2015 confirm that the population decline in the habituated groups reflects a larger ... ...
