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Walia Special Edition on the Bale Mountains (2011) - Zoologische ...

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M<strong>on</strong>itoring and management priorities<br />

Our observati<strong>on</strong>s suggest that <strong>the</strong> current distributi<strong>on</strong> of <strong>the</strong> <strong>Bale</strong> M<strong>on</strong>key is closely associated<br />

with <strong>the</strong> bamboo and mixed-bamboo forest. This forest type occurs <strong>on</strong> very steep slopes that are<br />

dissected by steep ravines, making it very difficult for humans to access in an extensive way. Local<br />

people harvest bamboo as a subsistence crop but <strong>the</strong>re is also some commercial harvest around Rira<br />

(Tesfaye this editi<strong>on</strong>). One priority for m<strong>on</strong>itoring is <strong>the</strong>refore to assess <strong>the</strong> extent and quality of<br />

<strong>the</strong> bamboo and mixed-bamboo forest. Remotely sensed data may play an important role, given <strong>the</strong><br />

difficulty of access to <strong>the</strong>se habitats for field surveys or m<strong>on</strong>itoring. Management priorities may<br />

include <strong>the</strong> regulati<strong>on</strong> of <strong>the</strong> level of bamboo harvesting (Tesfaye this editi<strong>on</strong>), or at least restricting<br />

commercial activities within <strong>the</strong> park. The locati<strong>on</strong> of settlements and agricultural fields may also<br />

need to be c<strong>on</strong>sidered in terms of <strong>the</strong> implicati<strong>on</strong>s for <strong>the</strong> <strong>Bale</strong> m<strong>on</strong>key and its habitat.<br />

Finally, additi<strong>on</strong>al surveys in <strong>the</strong> locality are necessary to improve <strong>the</strong> estimate of <strong>the</strong><br />

populati<strong>on</strong> density and abundance. There are o<strong>the</strong>r stands of bamboo within <strong>Bale</strong> <strong>Mountains</strong><br />

Nati<strong>on</strong>al park and its surroundings where <strong>Bale</strong> m<strong>on</strong>keys have been recorded. Additi<strong>on</strong>al sampling<br />

in <strong>the</strong>se areas would be helpful for establishing a better understanding of <strong>the</strong> species distributi<strong>on</strong>.<br />

Acknowledgements<br />

The authors are grateful to <strong>the</strong> Oromia Bureau and <strong>the</strong> <strong>Bale</strong> <strong>Mountains</strong> Nati<strong>on</strong>al Park for permissi<strong>on</strong><br />

to work in <strong>the</strong> Harenna Forest. Mr Addisu Assefa provided helpful informati<strong>on</strong> about <strong>the</strong> m<strong>on</strong>key and<br />

<strong>the</strong> bamboo forest, as well as logistical support. The Frankfurt Zoological Society <strong>Bale</strong> <strong>Mountains</strong><br />

C<strong>on</strong>servati<strong>on</strong> Project, in particular, Deborah Randall and Alastair Nels<strong>on</strong>, also provided logistical<br />

support and encouragement to publish <strong>the</strong> manuscript. The field work was supported by Hussen<br />

Batu, Mohamed Batu and Aliyu. Wildlife C<strong>on</strong>servati<strong>on</strong> Department (now, <strong>the</strong> Ethiopian Wildlife<br />

C<strong>on</strong>servati<strong>on</strong> Authority) and <strong>the</strong> Darwin Initiative (DEFRA, UK) provided financial support. Mr.<br />

Fanuel Kebede helped with <strong>the</strong> survey and o<strong>the</strong>r aspects of <strong>the</strong> project. Two an<strong>on</strong>ymous reviewers<br />

and Deb Randall provided helpful comments <strong>on</strong> an earlier draft of <strong>the</strong> manuscript.<br />

References<br />

Buckland, S.T., Anders<strong>on</strong>, D. R., Burnham, K. P., Laake, J. L., Borchers, D. L. and Thomas, L. 2001.<br />

Introducti<strong>on</strong> Distance Sampling: Estimating Abundance of Biological Populati<strong>on</strong>s. Oxford:<br />

Oxford University Press.<br />

Dandelot, P. and Prevost, J. 1972. C<strong>on</strong>tributi<strong>on</strong> a l’etude des primates d’Ethiopie (Simiens).<br />

Mammalia, 36: 607-633.<br />

Ethiopian Wildlife and Natural History Society 1996. Important Bird Areas of Ethiopia, A First<br />

Inventory. A Technical Report held by EWNHS, Addis Ababa.<br />

Kingd<strong>on</strong>, J. 1997. The Kingd<strong>on</strong> Field Guide to African Mammals, Princet<strong>on</strong> University Press, New<br />

Jersey. 476 pp.<br />

Laake, J.L., Buckland, S.T., Anders<strong>on</strong>, D.R. and Burnham, K.P. 1994. DISTANCE User’s Guide. V<br />

2.0. Colorado State University, Fort Collins, Vol. 2.<br />

Lernould, J. 1988. Classificati<strong>on</strong> and geographical distributi<strong>on</strong> of guen<strong>on</strong>s: a review. In:. A Primate<br />

<str<strong>on</strong>g>Walia</str<strong>on</strong>g>-<str<strong>on</strong>g>Special</str<strong>on</strong>g> <str<strong>on</strong>g>Editi<strong>on</strong></str<strong>on</strong>g> <strong>on</strong> <strong>the</strong> <strong>Bale</strong> <strong>Mountains</strong> 87

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