Eleocharis geniculata | UAE National Red List of Vascular Plants

Taxa
Eleocharis geniculata | (L.) Roem. & Schult.
Publication
UAE National Red List of Vascular Plants
Location
Countries in Assessment
United Arab Emirates
Country ISO code(s)
ARE
Does the assessment cover a marine EEZ area(s)?
Off
Scope (Assessment)
National
Taxon
Taxonomic Group
Plants
Taxonomic Group Level 2
Flowering Plants
Assessed taxon level
Species
Taxon distribution as listed in assessment
Distribution of this species is recorded from wadis in the Hajar Mountains (Jongbloed et al. 2003, Al Mehairbi et al. 2019). Feulner (2016) did not find the species (as Eliocharis geniculata) in WWNP, but would expect it to be present. The estimated Extent of Occurrence (EOO) of this species is around 1,430 km<sup>2</sup>. Globally, this is a pantropical species (Board of Trustees, RBG Kew 2018).
Habitats and Ecology
Ecological system type
Terrestrial system
No
Freshwater system
No
Marine system
No
Habitat
Habitat details as listed in assessment
This is an annual or short-lived perennial species, up to 0.35 m (Jongbloed et al. 2003). It is usually found in moist banks of ponds and wadis (Jongbloed et al. 2003). Brackish marshes and edges of mangrove swamps are typical habitats for this species (Board of Trustees, RBG Kew 2018).
Is there a map available in assessment?
Yes
Assessed status
Asessment status in full
Near Threatened
Assessment status abreviation
NT
Assessment status criteria
B1ab(iii,v)
Assessment rationale/justification
This species has a restricted extent of occurrence (EOO) within the UAE and is not considered to be common within this area. The estimated EOO for this plant is around 1,430 km<sup>2</sup>, which falls within the threshold for threatened categories. The species probably occurs in more than ten threat-based locations, but the number of locations is likely to be restricted. Water abstraction and declining rainfall as a result of climate are resulting in population declines. As a result, it is cautiously assessed as Near Threatened due to the restricted distribution within the UAE and declining populations. No regional adjustment is made as the extent of any rescue effect is not known.
About the assessment
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
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.
Endemism
Endemic to region
Not_assigned
Endemism Notes
Is an endemic?: Not_assigned
Conservation
Threats listed in assessment
Declining rainfall and increases in water abstraction in recent years has resulted in population declines (G.R. Feulner pers. comm. 2019).
Conservation Measures

Conservation measures:
Conservation measures notes:
Required conservation measures:

Further information
History
The species is assessed as Least Concern in 1996, as it was much more common at the time.
Scientific Name Kingdom Phylum Class Order Family Genus
Eleocharis geniculata Plantae Tracheophyta Liliopsida Poales Cyperaceae Eleocharis