The Tapanuli orangutan: Status, threats, and steps for improved conservation

Serge A. Wich,Graham Usher,Hjalmar S. Kühl,Matthew G. Nowak,Gabriella Fredriksson

doi:10.1111/csp2.33

Abstract

The Tapanuli orangutan: Status, threats, and steps for improved conservation

Highlights

It is found in three main forest blocks with a total of 767 individuals (95% confidence intervals [CI] [231–1,597]): the west block which houses 581 individuals (95%CI [180–1,201] [sum of 533, 42, and 6 in Figure 1]), the east block with 162 individuals (95% CI [46–341]), and the Sibual-buali Reserve with 24 individuals (95% CI [6–53], based on (Wich et al, 2016), with possibly small populations to the north and/or in the Lubuk Raya Reserve)
Ever since the Tapanuli orangutan (Pongo tapanuliensis) was described two years ago (Nater et al, 2017) it has frequently been in the news for two primary reasons
As the species has only been described recently there is no paper that summarizes its status and threats even though some of that information is available from a previous study where this species was still considered a population of the Sumatran orangutan (Pongo abelii) (Wich et al, 2016)

Summary

Introduction

It is found in three main forest blocks with a total of 767 individuals (95% confidence intervals [CI] [231–1,597]): the west block which houses 581 individuals (95%CI [180–1,201] [sum of 533, 42, and 6 in Figure 1]), the east block with 162 individuals (95% CI [46–341]), and the Sibual-buali Reserve with 24 individuals (95% CI [6–53], based on (Wich et al, 2016), with possibly small populations to the north and/or in the Lubuk Raya Reserve). Between 1985 and 2007, 43.3% of the forests in the province of North Sumatra (where the Tapanuli orangutan occurs) have been lost (Wich, Riswan, Jenson, Refisch, & Nellemann, 2011).

Objectives

Results

Conclusion