Taxon name
Potamogeton nodosus
Poir.
Uploaded by
National Red List Database
Taxonomic information
Scientific name
Potamogeton nodosus
Poir.
Assessed taxon level
Species
Higher level taxonomic groupings
Plants
Flowering Plants
Taxonomic notes and synonyms listed
Potamogeton nodosus is one of the most polymorphic Potamogeton species, showing several distinct morphotypes as well as an extreme phenotypic plasticity throughout its range. It seems likely that there has been some confusion about the distinction between this specie and others such as P. linguatus, P. ferrugineus, P. tepperi and P. sulcatus (Wiegleb and Kaplan 1998), to the extent that this evaluation could include information on some of all of those taxa. Potamogeton nodosus has been shown to hybridise with P. natans (P. xschreberi G. Fisch.), the hybrid is not common and is unlikely to affect the survival of the species or this evaluation.
Location and scope
Specific locality or subnational name or regional name
United Arab Emirates (the)
Scope (of the Assessment)
National
Countries included within the scope of the assessment
United Arab Emirates (the)
Does the assessment cover a marine EEZ area(s)?
Not_assigned
Conservation Status
Assessed as
Data Deficient
Criteria system used
IUCN
(see Assessment details)
Assessment rationale/justification
The origin and distribution of this species with the UAE appears to be unclear and there are no recent records available. Therefore, this species is currently assessed as Data Deficient.
Assessment details
Assessors/contributors/reviewers listed
UAE National Red List Workshop
Criteria system used
IUCN
Reference for methods given
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.
Further information
Endemism (according to assessment)
Endemic to region
Not assigned
Taxon distribution as listed in assessment
The species was listed without detail for the UAE by Jongbloed et al. (2003). The first record found for the species in the country dates from 1857 (<a href=""https://herbarium.univie.ac.at/database/detail.php?ID=162724"">Herbarium, Institute of Botany, University of Vienna</a>). There are no detailed distribution data available for this species within the UAE. Globally, the native range of this species spans across the Americas, European continent, Africa, temperate and tropical Asia in addition to Australasia (Board of Trustees, RBG Kew 2019).
Is there a map available in assessment?
Not possible
Habitat and systems
Ecological system type
Habitat
Habitat details as listed in assessment
Potamogeton species are typically found in fresh and brackish water bodies (Ghazanfar and Fisher 1998). P. nodosus in particular is specifically found in deep pools and has both submerged and floating leaves (Ghazanfar and Fisher 1998).
Threats and conservation measures listed
Threats listed in assessment
There is no information available.
Publication
Allen, D.J., Westrip, J.R.S., Puttick, A., Harding, K.A., Hilton-Taylor, C. and Ali, H. 2021. UAE National Red List of Vascular Plants. Technical Report. Ministry of Climate Change and Environment, United Arab Emirates, Dubai.
