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Article

Sustainable Land Use Management Needed to Conserve the Dragon’s Blood Tree of Socotra Island, a Vulnerable Endemic Umbrella Species

1
Department of Forest Botany, Dendrology and Geobiocoenology, Mendel University in Brno, Zemědělská 3, 613 00 Brno, Czech Republic
2
Department of Forest Management and Applied Geoinformatics, Mendel University in Brno, Zemědělská 3, 613 00 Brno, Czech Republic
3
Lower Morava Biosphere Reserve, Zámecké náměstí 69, 691 44 Lednice, Czech Republic
4
Department of Plant Biology, Mendel University in Brno, Zemědělská 3, 613 00 Brno, Czech Republic
5
UNEP/GEF Project, Hadibo, Socotra, Republic of Yemen
*
Author to whom correspondence should be addressed.
Sustainability 2019, 11(13), 3557; https://doi.org/10.3390/su11133557
Received: 13 May 2019 / Revised: 24 June 2019 / Accepted: 26 June 2019 / Published: 28 June 2019
(This article belongs to the Special Issue Sustainable Landscape Management and Planning)
Unsustainable overgrazing is one of the most important threats to the endemic and endangered population of dragon’s blood tree (Dracaena cinnabari) on Socotra Island (Republic of Yemen). However, there is a lack of information about the exact population size and its conservation status. We estimated the population size of D. cinnabari using remote sensing data. The age structure was inferred using a relationship between crown projection area and the number of branch sections. The conservation importance of each sub-population was assessed using a specially developed index. Finally, the future population development (extinction time) was predicted using population matrices. The total population size estimated consists of 80,134 individuals with sub-populations varying from 14 to 32,196 individuals, with an extinction time ranging from 31 to 564 years. Community forestry controlled by a local certification system is suggested as a sustainable land management approach providing traditional and new benefits and enabling the reforestation of endemic tree species on Socotra Island. View Full-Text
Keywords: Soqotra; population decline; overgrazing; Conservation Importance Index Soqotra; population decline; overgrazing; Conservation Importance Index
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    Doi: 10.5281/zenodo.3247104
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    Description: Figure S1: Population decline and artificial reforestation; Table S1: Crown age estimation for D. cinnabari using fit model for Firmihin locality; Table S2: Future sub-population development models, Video S1: Visualization of sub-populations extinction, Supplement S1: Description of Firmihin pilot area
MDPI and ACS Style

Maděra, P.; Volařík, D.; Patočka, Z.; Kalivodová, H.; Divín, J.; Rejžek, M.; Vybíral, J.; Lvončík, S.; Jeník, D.; Hanáček, P.; Amer, A.S.; Vahalík, P. Sustainable Land Use Management Needed to Conserve the Dragon’s Blood Tree of Socotra Island, a Vulnerable Endemic Umbrella Species. Sustainability 2019, 11, 3557. https://doi.org/10.3390/su11133557

AMA Style

Maděra P, Volařík D, Patočka Z, Kalivodová H, Divín J, Rejžek M, Vybíral J, Lvončík S, Jeník D, Hanáček P, Amer AS, Vahalík P. Sustainable Land Use Management Needed to Conserve the Dragon’s Blood Tree of Socotra Island, a Vulnerable Endemic Umbrella Species. Sustainability. 2019; 11(13):3557. https://doi.org/10.3390/su11133557

Chicago/Turabian Style

Maděra, Petr, Daniel Volařík, Zdeněk Patočka, Hana Kalivodová, Josef Divín, Martin Rejžek, Jan Vybíral, Samuel Lvončík, David Jeník, Pavel Hanáček, Abdullateef S. Amer, and Petr Vahalík. 2019. "Sustainable Land Use Management Needed to Conserve the Dragon’s Blood Tree of Socotra Island, a Vulnerable Endemic Umbrella Species" Sustainability 11, no. 13: 3557. https://doi.org/10.3390/su11133557

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