Nannorrhops ritchieana | UAE National Red List of Vascular Plants
Taxa
Nannorrhops ritchieana | (Griff.) Aitch.
Publication
Asessment status in full
Near Threatened
Assessment status abreviation
NT
Assessment status criteria
B1a+2a
Assessment rationale/justification
Within the UAE, this species occurs in the Hajar Mountains from Masafi (Wadi Ham south to the border with Oman, including Wadi Hatta), and also occurs on Jebel Hafeet. some subpopulations may be the result of intentional cultivation for use. The extent of occurrence (EOO) is between 1,500 and 2,000 km<sup>2</sup>, and the AOO at less than 500 km<sup>2</sup>. There is no information on population size or trend. The species is assessed as Near Threatened as, whilst the extent of occurrence (EOO) and area of occupancy (AOO) are restricted, and it is suspected that the species occurs in between eight and ten locations, there is no evidence of widespread threats within its distribution range, or of continuing decline. The species would qualify as Vulnerable if a continuing decline in the number of mature individuals, or in habitat area, extent or quality was known or suspected. In addition, the species might potentially qualify as threatened under criterion D, however further information on the population structure of this probably clonal species is required.
Assessment year
2019
Assessors/contributors/reviewers listed
UAE National Red List Workshop
Affliation of assessor(s)/contributors/reviewers listed on assessment
Government
IGO
Assessor affiliation specific
Government|IGO
Criteria system specifics
IUCN v3.1 + Regional Guidelines v4.0
Criteria system used
IUCN
Criteria Citation
IUCN. 2012. IUCN Red List Categories and Criteria: Version 3.1, Second edition. IUCN, Gland, Switzerland and Cambridge, UK. iv + 32pp pp. And IUCN. 2012. Guidelines for Application of IUCN Red List Criteria at Regional and National Levels: Version 4.0. Gland, Switzerland and Cambridge, UK: IUCN. iii + 41pp.
Endemic to region
Not_assigned
Endemism Notes
Is an endemic?: Not_assigned
Threats listed in assessment
MEW (2010) considered populations fragmented and at threat from development, without giving details. At one site in the Hajar Mountains, quarrying activities had lowered the wadi floor by at least 2 m, with consequential impacts on the ground water level. As a result, one cluster of the palm in the wadi is dying (D. Aplin pers. comm. 2019). The species is generally found in the lower parts of wadis and it is therefore vulnerable to development, e.g. road construction, and other works.
Conservation Measures
Conservation measures:
Conservation measures notes:
Required conservation measures:
History
The situation for this species in 1996 is thought to be similar to the situation for the species now.
Scientific Name | Kingdom | Phylum | Class | Order | Family | Genus |
---|---|---|---|---|---|---|
Nannorrhops ritchieana | Plantae | Tracheophyta | Liliopsida | Arecales | Arecaceae | Nannorrhops |