String Sedge
EN

String Sedge

Carex chordorrhiza

UnknownLCEULCEU

Photo: Wikimedia Commons (CC) via https://en.wikipedia.org/wiki/Carex_chordorrhiza

Overview

A detailed profile for this species is sourced from the IUCN Red List of Threatened Species as assessments become available.

String Sedge faces severe decline due to wetland drainage and conversion for agriculture and development, which has eliminated much of its specialized bog and fen habitat. Climate change poses an additional threat by altering the hydrology of remaining wetlands and shifting temperature regimes that affect the species' narrow ecological requirements. Invasive plant species and changes in water chemistry from agricultural runoff further degrade the quality of surviving habitat patches.

Threat summary

Habitat

String Sedge inhabits acidic bogs, fens, and wet meadows with consistently moist to saturated soils. It typically grows in nutrient-poor, calcium-deficient wetlands alongside other specialized bog plants like sphagnum mosses and requires stable water levels throughout the growing season.

TERRESTRIAL· major

Other threatened species in Cyperaceae

Round-headed Club-rushCR

Round-headed Club-rush

Scirpoides holoschoenus

Unknown
Tawny SedgeCR

Tawny Sedge

Carex hostiana

Unknown
Two-stamen SedgeCR

Two-stamen Sedge

Carex diandra

Unknown
Flat-sedgeVU

Flat-sedge

Blysmus compressus

Unknown

Frequently asked questions

Why is String Sedge classified as Endangered?
String Sedge is classified as Endangered — facing a very high risk of extinction in the wild — because population numbers are declining steeply and key habitats are under sustained pressure. String Sedge faces severe decline due to wetland drainage and conversion for agriculture and development, which has eliminated much of its specialized bog and fen habitat. Climate change poses an additional threat by altering the hydrology of remaining wetlands and shifting temperature regimes that affect the species' narrow ecological requirements. Invasive plant species and changes in water chemistry from agricultural runoff further degrade the quality of surviving habitat patches.
Where does String Sedge live?
String Sedge occurs in across multiple regions. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to String Sedge?
The main threats to String Sedge are ai-1, ai-2, ai-3, and ai-4. The full IUCN-classified threat record for this species is detailed on the species page.

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