NVCS

A2622 Carex lyngbyei Brackish Salt Marsh Alliance

Type Concept Sentence: This alliance consists of brackish estuarine tidal marshes dominated by Carex lyngbyei, along tidal flats and tidal river channel margins of the northern Pacific Coast.

Common (Translated Scientific) Name: Lyngbye''s Sedge Brackish Salt Marsh Alliance

Colloquial Name: Lyngbye''s Sedge Brackish Salt Marsh

Hierarchy Level: Alliance

Type Concept: This alliance consists of estuarine tidal marshes dominated by Carex lyngbyei with low species diversity, but codominants can occur, such as Argentina egedii, Bidens cernua, Cicuta douglasii, Deschampsia cespitosa, Distichlis spicata, Eleocharis palustris, and/or Triglochin maritima. Sites are tidal flats and tidal river channel margins that have fluctuations of brackish water, active sedimentation, diurnal flooding and diurnal soil exposure, along the northern Pacific Coast of North America.

Diagnostic Characteristics: Brackish marshes with tidal influences dominated by Carex lyngbyei.

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: This alliance needs additional information on the range of associations, community ecology and distribution.

Similar NVC Types: No Data Available

note: No Data Available

Physiognomy and Structure: No Data Available

Floristics: Low species diversity is typical but codominant species do occur. Carex lyngbyei dominates with species such as Argentina egedii, Bidens cernua, Boltonia asteroides, Caltha palustris var. palustris (= Caltha asarifolia), Cicuta douglasii, Deschampsia cespitosa, Distichlis spicata, Eleocharis palustris, Equisetum fluviatile, Glaux maritima, Juncus oxymeris, Sagittaria latifolia, Sium suave, Triglochin maritima, and Typha angustifolia.

Dynamics: No Data Available

Environmental Description: It occurs where there are strong fluctuations of brackish water, active sedimentation and diurnal flooding and exposure locations such as tidal flats and tidal river channel margins. Soils are silty, clayey or fine-sandy. Mineral layers are often embedded with sedge roots and shoots. They occur on sites that experience continual erosion and deposition but do not occur on less dynamic sites.

Geographic Range: This common and widespread estuarine alliance is found along the coast of British Columbia south into California, but is more common in the north (British Columbia and Washington) than the south (Oregon and California).

Nations: CA,US

States/Provinces: AK, BC, CA, OR, WA

Plot Analysis Summary: http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.899212

Confidence Level: Moderate

Confidence Level Comments: No Data Available

Grank: GNR

Greasons: No Data Available

Type	Name	Database Code	Classification Code
Class	2 Shrub & Herb Vegetation Class	C02	2
Subclass	2.C Shrub & Herb Wetland Subclass	S44	2.C
Formation	2.C.5 Salt Marsh Formation	F035	2.C.5
Division	2.C.5.Nc Temperate & Boreal Pacific Coastal Salt Marsh Division	D035	2.C.5.Nc
Macrogroup	2.C.5.Nc.1 North American Pacific Coastal Salt Marsh Macrogroup	M081	2.C.5.Nc.1
Group	2.C.5.Nc.1.a Lyngbye''s Sedge - Cosmopolitan Bulrush - Sea-milkwort Salt Marsh Group	G499	2.C.5.Nc.1.a
Alliance	A2622 Lyngbye''s Sedge Brackish Salt Marsh Alliance	A2622	2.C.5.Nc.1.a
Association	CEGL003285 Lyngbye''s Sedge - (Saltgrass, Seaside Arrow-grass) Salt Marsh	CEGL003285	2.C.5.Nc.1.a
Association	CEGL003289 Lyngbye''s Sedge - Pacific Silverweed Salt Marsh	CEGL003289	2.C.5.Nc.1.a
Association	CEGL003369 Lyngbye''s Sedge Salt Marsh	CEGL003369	2.C.5.Nc.1.a

Concept Lineage: No Data Available

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: No Data Available

Concept Author(s): M.S. Reid, in Faber-Langendoen et al. (2013)

Author of Description: G. Kittel and M.S. Reid

Acknowledgements: No Data Available

Version Date: 09-26-14

Faber-Langendoen, D., J. Drake, M. Hall, G. Kittel, S. Menard, C. Nordman, M. Pyne, M. Reid, M. Russo, K. Schulz, L. Sneddon, K. Snow, and J. Teague. 2013-2019b. Screening alliances for induction into the U.S. National Vegetation Classification: Part 1 - Alliance concept review. NatureServe, Arlington, VA.