First integrative trend analysis for a great ape species in Borneo
Abstract For many threatened species the rate and drivers of population decline are difficult to assess accurately: species’ surveys are typically restricted to small geographic areas, are conducted over short time periods, and employ a wide range of survey protocols. We addressed methodological cha...
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Nature Portfolio
2017
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oai:doaj.org-article:89369e250d5b4a9aa14941505ee68a472021-12-02T15:04:57ZFirst integrative trend analysis for a great ape species in Borneo10.1038/s41598-017-04435-92045-2322https://doaj.org/article/89369e250d5b4a9aa14941505ee68a472017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-04435-9https://doaj.org/toc/2045-2322Abstract For many threatened species the rate and drivers of population decline are difficult to assess accurately: species’ surveys are typically restricted to small geographic areas, are conducted over short time periods, and employ a wide range of survey protocols. We addressed methodological challenges for assessing change in the abundance of an endangered species. We applied novel methods for integrating field and interview survey data for the critically endangered Bornean orangutan (Pongo pygmaeus), allowing a deeper understanding of the species’ persistence through time. Our analysis revealed that Bornean orangutan populations have declined at a rate of 25% over the last 10 years. Survival rates of the species are lowest in areas with intermediate rainfall, where complex interrelations between soil fertility, agricultural productivity, and human settlement patterns influence persistence. These areas also have highest threats from human-wildlife conflict. Survival rates are further positively associated with forest extent, but are lower in areas where surrounding forest has been recently converted to industrial agriculture. Our study highlights the urgency of determining specific management interventions needed in different locations to counter the trend of decline and its associated drivers.Truly SantikaMarc AncrenazKerrie A. WilsonStephanie SpeharNicola AbramGraham L. BanesGail Campbell-SmithLisa CurranLaura d’ArcyRoberto A. DelgadoAndi ErmanBenoit GoossensHerlina HartantoMax HoughtonSimon J. HussonHjalmar S. KühlIsabelle LackmanAshley LeimanKarmele Llano SanchezNiel MakinuddinAndrew J. MarshallAri MeididitKerrie MengersenMusnandaNardiyonoAnton NurcahyoKisar OdomAdventus PandaDidik PrasetyoPurnomoAndjar RafiastantoSlamet RaharjoDessy RatnasariAnne E. RussonAdi H. SantanaEddy SantosoIman SapariJamartin SihiteAhmat SuyokoAlbertus TjiuSri Suci Utami-AtmokoCarel P. van SchaikMaria VoigtJessie WellsSerge A. WichErik P. WillemsErik MeijaardNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-16 (2017) |
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DOAJ |
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DOAJ |
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EN |
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Medicine R Science Q |
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Medicine R Science Q Truly Santika Marc Ancrenaz Kerrie A. Wilson Stephanie Spehar Nicola Abram Graham L. Banes Gail Campbell-Smith Lisa Curran Laura d’Arcy Roberto A. Delgado Andi Erman Benoit Goossens Herlina Hartanto Max Houghton Simon J. Husson Hjalmar S. Kühl Isabelle Lackman Ashley Leiman Karmele Llano Sanchez Niel Makinuddin Andrew J. Marshall Ari Meididit Kerrie Mengersen Musnanda Nardiyono Anton Nurcahyo Kisar Odom Adventus Panda Didik Prasetyo Purnomo Andjar Rafiastanto Slamet Raharjo Dessy Ratnasari Anne E. Russon Adi H. Santana Eddy Santoso Iman Sapari Jamartin Sihite Ahmat Suyoko Albertus Tjiu Sri Suci Utami-Atmoko Carel P. van Schaik Maria Voigt Jessie Wells Serge A. Wich Erik P. Willems Erik Meijaard First integrative trend analysis for a great ape species in Borneo |
| description |
Abstract For many threatened species the rate and drivers of population decline are difficult to assess accurately: species’ surveys are typically restricted to small geographic areas, are conducted over short time periods, and employ a wide range of survey protocols. We addressed methodological challenges for assessing change in the abundance of an endangered species. We applied novel methods for integrating field and interview survey data for the critically endangered Bornean orangutan (Pongo pygmaeus), allowing a deeper understanding of the species’ persistence through time. Our analysis revealed that Bornean orangutan populations have declined at a rate of 25% over the last 10 years. Survival rates of the species are lowest in areas with intermediate rainfall, where complex interrelations between soil fertility, agricultural productivity, and human settlement patterns influence persistence. These areas also have highest threats from human-wildlife conflict. Survival rates are further positively associated with forest extent, but are lower in areas where surrounding forest has been recently converted to industrial agriculture. Our study highlights the urgency of determining specific management interventions needed in different locations to counter the trend of decline and its associated drivers. |
| format |
article |
| author |
Truly Santika Marc Ancrenaz Kerrie A. Wilson Stephanie Spehar Nicola Abram Graham L. Banes Gail Campbell-Smith Lisa Curran Laura d’Arcy Roberto A. Delgado Andi Erman Benoit Goossens Herlina Hartanto Max Houghton Simon J. Husson Hjalmar S. Kühl Isabelle Lackman Ashley Leiman Karmele Llano Sanchez Niel Makinuddin Andrew J. Marshall Ari Meididit Kerrie Mengersen Musnanda Nardiyono Anton Nurcahyo Kisar Odom Adventus Panda Didik Prasetyo Purnomo Andjar Rafiastanto Slamet Raharjo Dessy Ratnasari Anne E. Russon Adi H. Santana Eddy Santoso Iman Sapari Jamartin Sihite Ahmat Suyoko Albertus Tjiu Sri Suci Utami-Atmoko Carel P. van Schaik Maria Voigt Jessie Wells Serge A. Wich Erik P. Willems Erik Meijaard |
| author_facet |
Truly Santika Marc Ancrenaz Kerrie A. Wilson Stephanie Spehar Nicola Abram Graham L. Banes Gail Campbell-Smith Lisa Curran Laura d’Arcy Roberto A. Delgado Andi Erman Benoit Goossens Herlina Hartanto Max Houghton Simon J. Husson Hjalmar S. Kühl Isabelle Lackman Ashley Leiman Karmele Llano Sanchez Niel Makinuddin Andrew J. Marshall Ari Meididit Kerrie Mengersen Musnanda Nardiyono Anton Nurcahyo Kisar Odom Adventus Panda Didik Prasetyo Purnomo Andjar Rafiastanto Slamet Raharjo Dessy Ratnasari Anne E. Russon Adi H. Santana Eddy Santoso Iman Sapari Jamartin Sihite Ahmat Suyoko Albertus Tjiu Sri Suci Utami-Atmoko Carel P. van Schaik Maria Voigt Jessie Wells Serge A. Wich Erik P. Willems Erik Meijaard |
| author_sort |
Truly Santika |
| title |
First integrative trend analysis for a great ape species in Borneo |
| title_short |
First integrative trend analysis for a great ape species in Borneo |
| title_full |
First integrative trend analysis for a great ape species in Borneo |
| title_fullStr |
First integrative trend analysis for a great ape species in Borneo |
| title_full_unstemmed |
First integrative trend analysis for a great ape species in Borneo |
| title_sort |
first integrative trend analysis for a great ape species in borneo |
| publisher |
Nature Portfolio |
| publishDate |
2017 |
| url |
https://doaj.org/article/89369e250d5b4a9aa14941505ee68a47 |
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