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NRLD - 330472 | Aythya ferina

Assessment ID
330472
Taxon name
Aythya ferina
(Linnaeus, 1758)
Uploaded by
National Red List Database
Taxonomic information
Scientific name
Aythya ferina
(Linnaeus, 1758)
Assessed taxon level
Species
Higher level taxonomic groupings
Vertebrates
Birds
Kingdom
Animalia
Phylum
chordata
Class
aves
Order
anseriformes
Family
anatidae
Genus
Aythya
Species
ferina
Species authority
(Linnaeus, 1758)
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)
Country ISO code(s)
ARE
Does the assessment cover a marine EEZ area(s)?
Not_assigned
Conservation Status
Assessed as
Endangered
Abbreviated status
EN
Qualifying criteria (if given)
D
Criteria system used
IUCN

(see Assessment details)

Assessment rationale/justification
This species has a restricted non-breeding population in the UAE. Given that the species is in decline globally and thus the conditions outside of the UAE are deteriorating, the rescue effect is unlikely to be large. The species is therefore listed as Endangered at national level.
Assessment details
Year assessed
2019
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
This species is a fairly common but localised winter visitor to the UAE, which stays between October and February or April, occasionally until June, mostly in the north of the country (Richardson 1990, Pedersen et al. 2017). Migrant individuals on passage to and from the breeding grounds occasionally visit the country and some individuals have stayed over summer (Pedersen et al. 2017).
Is there a map available in assessment?
Yes
Habitat and systems
Ecological system type
Terrestrial
Not_assigned
Freshwater
Not_assigned
Marine
Not_assigned
Habitat
Habitat details as listed in assessment
This species is found in well-vegetated wetlands, like freshwater ponds, marshes and reservoirs (Richardson 1990, Aspinall and Porter 2011). There is no information available about its diet in the UAE; elsewhere, it is omnivorous, its diet consisting of seeds, roots, rhizomes, the vegetative parts of grasses, sedges and aquatic plants as well as aquatic insects and larvae, molluscs, crustaceans, worms, amphibians and small fish;(Johnsgard 1978,;Brown;et al.;1982,;del Hoyo;et al.;1992,;Marsden and Bellamy 2000,;Kear 2005). Individuals wintering in the UAE mainly breed in central Asia.
Threats and conservation measures listed
Threats listed in assessment
The most relevant threats within UAE are changes in coastal land-use and the possibility of oil pollution, but the severity of these threats towards this species is unknown.Globally, however, the species faces a very wide range of threats, which could impact upon individuals that visit UAE:It is thought that the primary factors that have led to the global decline in this species are most likely to be a combination of: (i) loss of breeding habitat in eastern Europe, and (ii) changes in water chemistry (especially from hyper-eutrophication caused by agricultural runoff). The loss of habitat is thought to primarily result from changes in land management; either the abandonment or intensification of management of lowland marshes and fish ponds (Fox et al. 2016). The abandonment of traditional lowland grazing marshes results in succession to scrub and other unsuitable habitats, whilst greater agricultural intensification leads to marshes being drained. Negative changes to fish pond management also arise from either a reduction in fish production or an intensification that leads to greater use of fish food and medication treatments, and an increase in nutrient inputs. (Fox et al. 2016).Increased predation levels may be partly related to declines in Black-headed Gull Larus ridibundus colonies, with which Pochard often associate for the benefits of predator deterrence (Fox et al. 2016). Invasive carp may also provide competition for resources with this species (see Fox et al. 2016).The species may also be threatened by disturbance from hunting (del Hoyo;et al.;1992, Evans and Day 2002, Kear 2005), water-based recreation (Fox;et al.;1994, Kear 2005) and from machinery noise from urban development (Marsden 2000), as well as by habitat destruction (del Hoyo;et al.;1992) on its wintering grounds due to eutrophication (partially as a result of nutrient run-off from agricultural land) (Kear 2005, L. Raudonikis;in litt. 2015). Adults are poisoned by ingesting lead shot (Mateo et al. 1998) and drowned in freshwater fishing nets with mesh sizes greater than 5 cm (Quan et al. 2002). The species is also susceptible to avian influenza, so may be threatened by future outbreaks of the disease (Melville and Shortridge 2006). It is also hunted in numerous countries across its range (e.g. Mateo;et al. 1998, Evans and Day 2002, Balmaki and Barati 2006, Sorrenti;et al.;2006, H. Ibrahim in litt. 2016).
History
The population in the UAE is thought to have been similar to 2019, qualifying as Endangered.
Publication
Burfield, I.J., Westrip, J., Sheldon, R.D., Hermes, C., Wheatley, H., Smith, D., Harding, K.A. Allen, D.J. and Alshamsi, O. 2021. UAE National Red List of Birds. Ministry of Climate Change and Environment, Dubai, United Arab Emirates