Population Status of a Cryptic Top Predator: An Island-Wide Assessment of Tigers in Sumatran Rainforests

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dc.contributor.authorWibisono, Hariyo T.en
dc.contributor.authorLinkie, Matthewen
dc.contributor.authorGuillera-Arroita, Gurutzetaen
dc.contributor.authorSmith, Joseph A.en
dc.contributor.authorSunarto, Sunartoen
dc.contributor.authorPusparini, Wulanen
dc.contributor.authorAsriadien
dc.contributor.authorBaroto, Panduen
dc.contributor.authorBrickle, Nicken
dc.contributor.authorDinata, Yoanen
dc.contributor.authorGemita, Elvaen
dc.contributor.authorGunaryadi, Donnyen
dc.contributor.authorHaidir, Iding A.en
dc.contributor.authorHerwansyahen
dc.contributor.authorKarina, Indrien
dc.contributor.authorKiswayadi, Dedyen
dc.contributor.authorKristiantono, Deckien
dc.contributor.authorKurniawan, Harryen
dc.contributor.authorLahoz-Monfort, Jose J.en
dc.contributor.authorLeader-Williams, Nigelen
dc.contributor.authorMaddox, Tomen
dc.contributor.authorMartyr, Deborah J.en
dc.contributor.authorMaryatien
dc.contributor.authorNugroho, Agungen
dc.contributor.authorParakkasi, Karmilaen
dc.contributor.authorPriatna, Dollyen
dc.contributor.authorRamadiyanta, Ekaen
dc.contributor.authorRamono, Widodo S.en
dc.contributor.authorReddy, Goddilla V.en
dc.contributor.authorRood, Ente J. J.en
dc.contributor.authorSaputra, Doddy Y.en
dc.contributor.authorSarimudi, Ahmaden
dc.contributor.authorSalampessy, Adnunen
dc.contributor.authorSeptayuda, Ekaen
dc.contributor.authorSuhartono, Tonnyen
dc.contributor.authorSumantri, Adeen
dc.contributor.authorSusiloen
dc.contributor.authorTanjung, Iswandrien
dc.contributor.authorTarmizien
dc.contributor.authorYulianto, Kokoen
dc.contributor.authorYunus, Mohammaden
dc.contributor.authorZulfahmien
dc.contributor.departmentFish and Wildlife Conservationen
dc.date.accessioned2018-11-05T15:13:16Zen
dc.date.available2018-11-05T15:13:16Zen
dc.date.issued2011-11-02en
dc.description.abstractLarge carnivores living in tropical rainforests are under immense pressure from the rapid conversion of their habitat. In response, millions of dollars are spent on conserving these species. However, the cost-effectiveness of such investments is poorly understood and this is largely because the requisite population estimates are difficult to achieve at appropriate spatial scales for these secretive species. Here, we apply a robust detection/non-detection sampling technique to produce the first reliable population metric (occupancy) for a critically endangered large carnivore; the Sumatran tiger (Panthera tigris sumatrae). From 2007–2009, seven landscapes were surveyed through 13,511 km of transects in 394 grid cells (17×17 km). Tiger sign was detected in 206 cells, producing a naive estimate of 0.52. However, after controlling for an unequal detection probability (where p = 0.13±0.017; ±S.E.), the estimated tiger occupancy was 0.72±0.048. Whilst the Sumatra-wide survey results gives cause for optimism, a significant negative correlation between occupancy and recent deforestation was found. For example, the Northern Riau landscape had an average deforestation rate of 9.8%/yr and by far the lowest occupancy (0.33±0.055). Our results highlight the key tiger areas in need of protection and have led to one area (Leuser-Ulu Masen) being upgraded as a ‘global priority’ for wild tiger conservation. However, Sumatra has one of the highest global deforestation rates and the two largest tiger landscapes identified in this study will become highly fragmented if their respective proposed roads networks are approved. Thus, it is vital that the Indonesian government tackles these threats, e.g. through improved land-use planning, if it is to succeed in meeting its ambitious National Tiger Recovery Plan targets of doubling the number of Sumatran tigers by 2022.en
dc.description.versionPublished versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.1371/journal.pone.0025931en
dc.identifier.eissn1932-6203en
dc.identifier.issue11en
dc.identifier.othere25931en
dc.identifier.pmid22087218en
dc.identifier.urihttp://hdl.handle.net/10919/85646en
dc.identifier.volume6en
dc.language.isoenen
dc.publisherPLOSen
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.titlePopulation Status of a Cryptic Top Predator: An Island-Wide Assessment of Tigers in Sumatran Rainforestsen
dc.title.serialPLOS ONEen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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