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Biodiversity and Conservation

, Volume 27, Issue 10, pp 2495–2506 | Cite as

Empty forests: safeguarding a sinking flagship in a biodiversity hotspot

  • Ivon Cuadros-Casanova
  • Camilo Zamora
  • Werner Ulrich
  • Sebastian Seibold
  • Jan C. Habel
Original Paper
  • 250 Downloads
Part of the following topical collections:
  1. Forest and plantation biodiversity

Abstract

Anthropogenic activities caused a severe loss of pristine habitats alongside with fragmentation of remaining habitats and the deterioration of habitat quality. The Arabuko Sokoke forest represents the largest remnant of East African coastal forest. Despite conservation efforts to maintain biodiversity in this forest, populations of several species are declining, including flagship species like the endemic Sokoke Scops Owl Otus ireneae. In this study, we assessed the presence of O. ireneae based on playback technique to identify the occurrence of this species across the forest. We then analysed habitat parameters at sites occupied and non-occupied by the owl species. Our data show that O. ireneae occurs restricted to one single forest type, the Cynometra woodland. Results obtained from parametric one-way ANOVA and structural equation modelling reveal that large old Cynometra webberi trees and dead wood are key requirements for the occurrence of this owl species. However, large C. webberi trees are currently illegally logged by the forest adjacent human population to produce timber, carvings, poles. Charcoal and dead wood represents a major energy source for households. Otus ireneae, being the smallest owl of East Africa may serve as a charismatic flag ship species to promote conservation of this endangered coastal forest, and furthermore as umbrella to conserve other forest species with similar habitat requirements.

Keywords

Coastal forest East Africa Playback call Habitat model Habitat quality Endemic species Sokoke Scops Owl Human needs Poverty 

Notes

Acknowledgements

We thank David Ngala (Gede, Kenya) and Katharina Lameter (Freising, Germany) for assistance in the field and Mike Teucher (Halle, Germany) for creating Fig. 1. Two anonymous referees provided very fruitful comments on a draft version of this article. The study was granted by the German Academic Exchange Service (DAAD). WU was supported by an institutional university Grant of UMK.

Supplementary material

10531_2018_1548_MOESM1_ESM.xlsx (111 kb)
Supplementary material 1 (XLSX 111 kb)

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Copyright information

© Springer Science+Business Media B.V., part of Springer Nature 2018

Authors and Affiliations

  • Ivon Cuadros-Casanova
    • 1
  • Camilo Zamora
    • 1
  • Werner Ulrich
    • 2
  • Sebastian Seibold
    • 1
  • Jan C. Habel
    • 1
  1. 1.Terrestrial Ecology Research Group, Department of Ecology and Ecosystem Management, School of Life Sciences WeihenstephanTechnische Universität MünchenFreisingGermany
  2. 2.Chair of Ecology and BiogeographyNicolaus Copernicus University ToruńToruńPoland

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