Noyer commun

Juglans regiaL.

Plante

LCLR Monde (IUCN)

1 photo · Licences CC (Wikimedia Commons / iNaturalist)Click pour agrandir

Filtrer le graphe par contexte spatialPays · région · aire protégée · écorégion · biome

Graphe en cours d’indexation

Calcul du tissu écologique de Juglans regia.

Le graphe apparaîtra automatiquement dès que le calcul est terminé (rafraîchissement toutes les 5s).

Liste rouge IUCN

LC · Préoccupation mineure?Inconnue

Évaluation complète

Évaluation: 2017 · v3.1
Altitude: 600 – 3000 m
Profondeur: – m

État de la populationTexte officiel évaluation IUCNExpert

The population is widespread and likely to be large however there is no known population figures for the species. It is also difficult to differentiate between native and cultivated populations. Some local populations can be limited in size (de Rigo et al. 2016) and decline within central Asia has been commented on but there are no official numbers for this (Molnar et al. 2011).

Menaces identifiées(5 menaces classées CMP-IUCN)

2_3_4
Scale Unknown/Unrecorded
UnknownUnknownOngoing
5_2_1
Intentional use (species is the target)
UnknownUnknownOngoing
5_3_5
Motivation Unknown/Unrecorded
UnknownUnknownOngoing
8_1_1
Unspecified species
UnknownUnknownOngoing
8_1_2
Named species
UnknownUnknownOngoing

Description complète des menacesTexte détaillé évaluation IUCNExpert

Within central Asia there has been historical felling of walnut forests due to expansion of agriculture and for timber. In Kyrgyztan between 1897 and 1995 200 km² of walnut forest was cleared however this does include the cutting of Pistacia vera and Prunus dulcis within the same range (Molnar et al. 2011). Presently the species is threatened by fruit collection, cutting and livestock grazing. Within Europe the species is susceptible to fungal disease caused by Armillaria mellea, Phytophthora cinamomii and P. cambivora which causes necrosis and summer leaf fall (de Rigo et al. 2016). Young trees are also susceptible to Walnut blight caused by Xanthomonas campetris pv. juglandis and the trees nuts are also susceptible to pests and diseases. There is concern of a loss of genetic variation due to habitat loss in native regions and the breeding of hybrid cultivars.

Habitats préférentiels (classification IUCN)

1_4Forest - Temperate

Mesures de conservation recommandéesStratégies de conservation IUCNExpert

In Central Asian germplasm of Juglans reiga cultivars is held and used for research across the globe (Molnar et al. 2011). The species is held in 200 ex situ collections from across the globe (BGCI 2017). Within central Asia the species is considered Near Threatened (Eastwood et al. 2009), Endangered in Albania (National Red List) and Least Concern in Europe (Allen 2016). Outside its considered native range the species is considered Least Concern in Switzerland (Moser et al. 2002) and Luxembourg (Colling 2005). There is a need for research to understand the impact of pests and diseases on the Juglans regia populations, especially within the species Asian range. The possible reduction in genetic variation should also be investigated.

Stress écologiques (7)Stresses Classification — IUCNExpert

1_2Ecosystem degradation
1_2Ecosystem degradation
2_1Species mortality
2_2Species disturbance
2_2Species disturbance
2_2Species disturbance
2_3_7Reduced reproductive success

Usage & commerce (4)Use & Trade — IUCNExpert

1Food - human
internationalnationalsubsistance
11Other household goods
internationalnationalsubsistance
12Handicrafts, jewellery, etc.
internationalnationalsubsistance
3Medicine - human & veterinary
internationalnationalsubsistance

Priorités de recherche (1)Research Needed Classification — IUCNExpert

1_5Threats

Niche IUCN globaleRealms · Systems · LMEs · Growth forms · FAOs — biogéographie IUCNExpert

Royaumes biogéographiques

Palearctic

Systèmes (terrestre/eau douce/marin)

Terrestrial

Formes de croissance

Tree - size unknownTree - large

Références bibliographiques (8)Sources scientifiques de l'évaluation IUCNExpert

BGCI. 2017. PlantSearch. Botanic Gardens Conservation International, London. Available at: <a href="https://www.bgci.org/plant_search.php">https://www.bgci.org/plant_search.php</a>.
IUCN. 2017. The IUCN Red List of Threatened Species. Version 2017-3. Available at: <a href="www.iucnredlist.org">www.iucnredlist.org</a>. (Accessed: 5 December 2017).
Wani, M.S., Hussan, A., Ganie, S.A., Munshi, A.H., Lal, E.P and Gupta, R.C. 2016. Juglans Reiga- A Review. International Journal of Latest Research in Science and Technology 5(11): 90-97.
de Rigo, D., Enescu, C.M., Houston Durrant, T., Tinner, W. and Caudullo, G. 2016. Juglans regia in Europe: distribution, habitat, usage and threats. European Atlas of Forest Tree Species, Publ. Off. EU.
Molnar, T.J., Zaurov, D.E., Capik, J.M., Eisenman, S.W., Ford, T., Nikolyi, L.V. and Funk. C.R. 2011. Persian Walnuts (Juglans regia L.) in Central Asia. 101st Annual Report.
Eastwood, A., Lazkov, G, and Newton, A. 2009. The Red List of Trees of Central Asia. FFI, BGCI, GTC,IUCN/SSC , Cambridge.
Colling, G. 2005. Red List of the Vascular Plants of Luxembourg. Ferrantia 42.
Moser, D., Gygax, A., Bäumler, B., Wyler, N. and Palese, R. 2002. Red List of the Threatened Ferns and Flowering Plants of Switzerland (Rote Liste der gefährdeten Farn- und Blütenpflanzen der Schweiz). Bundesamt für Umwelt, Wald und Landschaft, Bern; Zentrum des Datenverbundnetzes der Schweizer Flora, Chambésy; Conservatoire et Jardin botaniques de la Ville de Genève, Chambésy.

Évaluateurs & contributeurs (3)Personnes ayant contribué à l'évaluation IUCNExpert

assessor

Rivers, M.C. & Allen, D.J.

evaluator

Oldfield, S.

institutions

Botanic Gardens Conservation International

Rivers, M.C. & Allen, D.J. 2017. Juglans regia. The IUCN Red List of Threatened Species 2017: e.T63495A61526700. Accessed on 05 May 2026.

Indicateurs écologiquesTolérance thermique · radar EIVE · triangle CSR

Indicateurs écologiques Ellenberg-type

EIVE 1.0 — Dengler 2023

Position de l'espèce sur les 5 dimensions écologiques européennes (M / N / R / L / T), échelle 0-10. La zone estompée représente la niche width (variabilité tolérée).

Humidité: xérophile ↔ hygrophile
Azote: oligotrophe ↔ nitrophile
Réaction (pH): silicicole ↔ calcicole
Lumière: sciaphile ↔ héliophile
Température: cryophile ↔ thermophile

Source : EIVE 1.0 (Dengler et al. 2023). CC-BY 4.0. Échelle harmonisée 0-10 (équivalent inverse-rang sur les systèmes Ellenberg, Landolt, Pignatti, etc.). Niche width = écart-type d'estimation, indicateur de fiabilité (zone estompée).

Stratégie écologique CSR

Pierce 2017 — triangle de Grime

Position de la plante dans le triangle de Grime, calculée par l'algorithme StrateFy à partir de 3 traits foliaires (LA, LDMC, SLA). Compétitive / Stress-tolérante / Ruderale.

C: 52 %
S: 31 %
R: 16 %

Statut : Naturalisée / introduite

Source : Pierce et al. 2017 (Functional Ecology) + dataset Guo et al. 2022. Données Dryad CC0. La position est calculée à partir de mesures foliaires (Leaf Area, Leaf Dry Matter Content, Specific Leaf Area) ; à interpréter comme une stratégie moyenne, peut varier localement.