Calendula arvensis | UAE National Red List of Vascular Plants

Taxa
Calendula arvensis | L.
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
This species is widespread in the Hajar Mountains and Ru'us al-Jibal (Jongbloed et al. 2003). This plant species can be found in silt and fallow fields up to 1,200 m and above (Feulner 2011). However, it is also recorded at lower elevations within montane areas too (Feulner 2011). The global distribution of this species is in Macaronesia, Europe to the Mediterranean and West Himalaya, and the Arabian Peninsula (Board of Trustees, RBG Kew 2019).
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 herb species which produces yellow flowers from January to March (Jongbloed et al. 2003, Norton et al. 2009). It grows to heights of up to 30 cm and typically occurs in silt substrate between rocks in montane areas (Jongbloed et al. 2003). This species can be found in sandy and gravelly habitats, wadis, plantations and fallow fields (MEW 2010, Feulner 2011). It is sometimes considered as a weed of disturbed areas and silty depressions within its habitat (Norton et al. 2009). It is highly rain-dependent.
Is there a map available in assessment?
Yes
Assessed status
Asessment status in full
Near Threatened
Assessment status abreviation
NT
Assessment status criteria
A2a
Assessment rationale/justification
This species, although being described as 'not common' or 'occasional', is considered to be a weed in certain habitats. The species is known to have declined over time as a result of changing rainfall patterns. It is known to survive within both disturbed areas and at a wide range of altitudes. The species is Near Threatened because of a population decline (approaching 30%) over the last ten years.
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
Grazing by goats may affect this species in parts of its range (Shahid 2017). Declining rainfall is thought also be causing declines.
Conservation Measures

Conservation measures:
Conservation measures notes:
Required conservation measures:

Further information
History
This species is considered to have become much less common due to decreasing frequency of wet years. In addition, increasing grazing may have contributed to population declines since 1996.
Scientific Name Kingdom Phylum Class Order Family Genus
Calendula arvensis Plantae Tracheophyta Magnoliopsida Asterales Asteraceae Calendula