Arabia's Last Forests Under Threat Ii: Remaining Fragments of Unique Valley Forest in Southwest Arabia

Hall, Matthew; Scholte, Paul; Al-Khulaidi, Abdul Wali; Miller, Anthony G.; Al-Qadasi, A. H.; Alfarhan, Ahmed H.; Al-Abbasi, T. M.

doi:10.1017/s0960428609005460

Cited by 8 publications

(9 citation statements)

References 7 publications

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“…Five of these are newly recorded localities in southwest Arabia (Wadi Tawlaq, Wadi Al-Basal, Wadi Lejib, Lejib Gorge and Wadi Shi'ib/Wadi Tharb). Hall et al (2009) also note the absence of M. laurifolia from sites in the western escarpment mountains where it had previously been recorded by Wood (1997). Their surveys of valley forest habitat along the escarpment did not record any individuals of M. laurifolia on the western slopes of Jabal Raymah, in Wadi Hillah, Jabal Melhan at the location above Hillah, Jabal Bura (Wadi Rakhaman).…”

Section: Current Distributionsupporting

confidence: 68%

“…Collating the survey results of Kilian et al (2004), Hall et al (2008Hall et al ( ), (2009 and the authors recent survey work in Saudi Arabia, the occurrence of M. laurifolia has been confirmed in 11 locations in southwest Arabia (Table 1). Five of these are newly recorded localities in southwest Arabia (Wadi Tawlaq, Wadi Al-Basal, Wadi Lejib, Lejib Gorge and Wadi Shi'ib/Wadi Tharb).…”

Section: Current Distributionmentioning

confidence: 90%

“…Recent surveys of valley forest vegetation in Yemen (Hall et al 2008(Hall et al , 2009) have highlighted the degraded nature of many valley forest sites, through pressures such as over-grazing, overexploitation and road construction. The valley forest vegetation on Jabal Raymah is particularly badly impacted due to a combination of high local population pressures and extensive overgrazing.…”

Section: Current Distributionmentioning

confidence: 99%

“…The aim of this paper is to document the current knowledge state of M. laurifolia in Arabia. In view of the documentation of rapidly declining valley forest habitats in Yemen (Hall et al 2009), its particular objectives are to: 1) collate information on the historical distribution of M. laurifolia in southwest Arabia, 2) update the known distribution of M. laurifolia and describe its habitat status, 3) collate data on population numbers, 4) estimate the extent of M. laurifolia regeneration, 5) assess the conservation status of M. laurifolia, 6) highlight conservation strategies.…”

mentioning

confidence: 99%

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Arabia's tallest trees: ecology, distribution and conservation status of the regionally endangered tree speciesMimusops laurifolia

Hall¹,

Neale²,

Al-Abbasi³

et al. 2010

Nordic Journal of Botany

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Mimusops laurifolia (Forssk.) Friis is the largest tree species in the Arabian Peninsula, and a characteristic species of the threatened southwest Arabian valley forest habitat. In order to understand the distribution and conservation status of M. laurifolia, this paper collates the historical records of M. laurifolia and compares them with recent survey data. This comparison highlights that the abundance of M. laurifolia has dramatically declined at sites that were previously considered important for this species. In Arabia, approximately 100 individuals of M. laurifolia remain at eleven localities. From their size, it is likely that many of these are extremely old trees, but there is currently little regeneration. The main threats to this species are the loss of valley forest habitat through overgrazing and road construction, overexploitation of M. laurifolia for wood as well as climate change. Based on these findings, we recommend that M. laurifolia should be classified as Endangered (EN) in the region on the IUCN red list. We recommend some basic conservation measures and identifies an urgent need for further research on the distribution, propagation and restoration of this species.

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Section: Current Distributionsupporting

confidence: 68%

Section: Current Distributionmentioning

confidence: 90%

Section: Current Distributionmentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Arabia's tallest trees: ecology, distribution and conservation status of the regionally endangered tree speciesMimusops laurifolia

Hall¹,

Neale²,

Al-Abbasi³

et al. 2010

Nordic Journal of Botany

Self Cite

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“…Hotspots with heterogeneous habitats and high species diversity are often targeted areas for the conservation. As a rule, species richness or biodiversity normally increases with altitudes where moisture level is high (Hall et al, 2009(Hall et al, , 2010. It means that the high altitudes in arid areas are most likely the hotspots with heterogeneous habitats and high species diversity.…”

Section: Introductionmentioning

confidence: 99%

Endemics and endangered species in the biodiversity hotspot of the Shada Mountains, Saudi Arabia

2016

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Shada Mountains in Saudi Arabia, separated by Maleel Wadi into twin mountains (i.e., Shada Alalah and Shada Asfal), are rich in biodiversity. We investigated the diversity of endemics and endangered species of the mountains based on the data collected from 38 stands falling in 8 elevational zones ranging from 500 to 2215 m a.s.l. Results indicated that 495 plant species falling in 314 genera and 76 families occurred in the Shada Mountains, including 19 endemic species and 43 endangered species, and accounting for 22% of the total flora in Saudi Arabia. Canonical correlation analysis indicated that physiographic features, particularly altitude play an important role in the frequency and abundance of species. Endemics were not evenly distributed in the Shada Mountains and mostly restricted in the elevation zone of 1000-1500 or >1500 m a.s.l. When the altitude reached up to 2000 m a.s.l., the endemics decreased substantially due to the significantly low temperature. The endangered species existed three different distribution patterns: (i) most endangered species distributed in the altitudes of 1000-1800 m a.s.l.; (ii) endangered trees, lianas, and shrubs occupied the altitudes 1000-1300 m a.s.l.; and (iii) endangered subshrubs and herbs inhabited the altitudes 1500-2100 m a.s.l. The results demonstrated that the biodiversity of endangered species in the Shada Mountains is high and undisturbed by invasive species, and protective measures should be taken against human disturbances to the small-scale hotspot.

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Neotypification ofPandanus odorifer, the correct name forP. odoratissimus(Pandanaceae)

Callmander

Gallaher

McNeill

et al. 2020

TAXON

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Pandanus odorifer (Pandanaceae) is an economically important species distributed on coasts from India and Sri Lanka to South China through tropical Asian countries. Pandanus odoratissimus has been widely used as the accepted name for the species, but P. odoratissimus is in reality a superfluous and illegitimate name. No original material of P. odorifer has been traced, and a neotype is designated here for that name.

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Arabia's Last Forests Under Threat Ii: Remaining Fragments of Unique Valley Forest in Southwest Arabia

Cited by 8 publications

References 7 publications

Arabia's tallest trees: ecology, distribution and conservation status of the regionally endangered tree speciesMimusops laurifolia

Arabia's tallest trees: ecology, distribution and conservation status of the regionally endangered tree speciesMimusops laurifolia

Endemics and endangered species in the biodiversity hotspot of the Shada Mountains, Saudi Arabia

Neotypification ofPandanus odorifer, the correct name forP. odoratissimus(Pandanaceae)

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