Scirpe à crochets

Scirpus ancistrochaetusSchuyler

Plante

NTLR Monde (IUCN)

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

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Calcul du tissu écologique de Scirpus ancistrochaetus.

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

Liste rouge IUCN

NT · Quasi menacée↘Décroissante

Évaluation complète

Évaluation: 2016 · v3.1
Altitude: 100 – 1100 m
Profondeur: – m

État de la populationTexte officiel évaluation IUCNExpert

There are approximately 113 extant occurrences known in the Appalachians from southern Vermont and New Hampshire to western Virginia, with most occurrences in Pennsylvania. Most of the known sites have small populations. The plants are restricted to fairly specific wetland habitats that are infrequent, especially in the southern part of the range (NatureServe 2014).

The species is classed as globally 'Vulnerable' by NatureServe (2014) (although this is not the same as the IUCN Red List category of 'Vulnerable'). The populations in USA are classed as 'Critically Imperiled', 'Imperiled' or 'Vulnerable' and the populations in the Canadian Province of Quebec are classed as 'Possibly Extirpated'. The Canadian Endangered Species Conservation Council (CESCC 2011+) also class the species as 'May be at risk' (for Canada only).

Number of occurrences comments: As of 2007, there were 113 extant populations (USFWS 2008). Most populations are in Pennsylvania (70) and Vermont (22) (USFWS 2008). The other populations are in Massachusetts (one), Maryland (one), New Hampshire (nine), Virginia (seven), and West Virginia (three) (NatureServe 2014).

Population size comments: The total population may be in the thousands. However, large fluctuations have been observed at some sites (NatureServe 2014).

Menaces identifiées(9 menaces classées CMP-IUCN)

1_1
Housing & urban areas
Ongoing
1_2
Commercial & industrial areas
Ongoing
3_1
Oil & gas drilling
Ongoing
3_2
Mining & quarrying
Ongoing
4_1
Roads & railroads
Ongoing
5_2_1
Intentional use (species is the target)
Ongoing
6_1
Recreational activities
Ongoing
7_1_2
Supression in fire frequency/intensity
Ongoing
7_3
Other ecosystem modifications
Ongoing

Description complète des menacesTexte détaillé évaluation IUCNExpert

Among the potential human threats to the species are agricultural run-off, logging roads, fire roads, urban development, all-terrain vehicle use, collection and dredging. Oil and gas development, road construction, and power line maintenance are also threats. Among possible natural threats are deer (browsing and trampling), beaver activity, natural water level fluctuations, fire and succession (NatureServe 2014).

Habitats préférentiels (classification IUCN)

15_2Artificial/Aquatic - Ponds (below 8ha)
5_1Wetlands (inland) - Permanent Rivers/Streams/Creeks (includes waterfalls)
5_4Wetlands (inland) - Bogs, Marshes, Swamps, Fens, Peatlands
5_5Wetlands (inland) - Permanent Freshwater Lakes (over 8ha)
5_7Wetlands (inland) - Permanent Freshwater Marshes/Pools (under 8ha)
5_8Wetlands (inland) - Seasonal/Intermittent Freshwater Marshes/Pools (under 8ha)

Mesures de conservation recommandéesStratégies de conservation IUCNExpert

No conservation actions for the species are known. More information would be useful on the species population status and threats across its range.

Stress écologiques (12)Stresses Classification — IUCNExpert

1_1Ecosystem conversion
1_1Ecosystem conversion
1_1Ecosystem conversion
1_2Ecosystem degradation
1_2Ecosystem degradation
1_2Ecosystem degradation
1_2Ecosystem degradation
1_2Ecosystem degradation
1_2Ecosystem degradation
1_2Ecosystem degradation
1_2Ecosystem degradation
2_1Species mortality

Priorités de recherche (4)Research Needed Classification — IUCNExpert

1_2Population size, distribution & trends
1_3Life history & ecology
1_4Harvest, use & livelihoods
1_5Threats

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

Royaumes biogéographiques

Nearctic

Systèmes (terrestre/eau douce/marin)

TerrestrialFreshwater (=Inland waters)

Formes de croissance

Forb or Herb

Références bibliographiques (5)Sources scientifiques de l'évaluation IUCNExpert

IUCN. 2016. The IUCN Red List of Threatened Species. Version 2016-1. Available at: <a href="www.iucnredlist.org">www.iucnredlist.org</a>. (Accessed: 30 June 2016).
NatureServe. 2014. NatureServe Explorer: An Online Encyclopedia of Life. Arlington, Virginia. Available at: <a href=" http://explorer.natureserve.org"> http://explorer.natureserve.org</a>. (Accessed: July 18, 2014).
New England Wild Flower Society. 2011-2015. Go botany. Discover thousands of New England plants. Available at: <a href="https://gobotany.newenglandwild.org">https://gobotany.newenglandwild.org</a>.
CFIA and NRCan/CFS. 2011+. Plants of Canada Database. Ottawa Available at: <a href="www.plantsofcanada.info.gc.ca">www.plantsofcanada.info.gc.ca</a>.
Center for Plant Conservation. 2010. CPC National Collection Plant Profile.

Évaluateurs & contributeurs (2)Personnes ayant contribué à l'évaluation IUCNExpert

assessor

Maiz-Tome, L.

evaluator

Bilz, M.

Maiz-Tome, L. 2016. Scirpus ancistrochaetus. The IUCN Red List of Threatened Species 2016: e.T64324851A67730927. Accessed on 05 May 2026.