Print Report

CEGL001826 Carex aquatilis var. dives Fen

Type Concept Sentence: No Data Available

Common (Translated Scientific) Name: Sitka Sedge Fen

Colloquial Name: No Data Available

Hierarchy Level:  Association

Type Concept: Habitat is usually montane fens. The association is widespread and important in the Cascade Range and, like ~Carex aquatilis Wet Meadow (CEGL001802)$$, includes a heterogeneous mix of species that do not segregate in any meaningful way. Trees and shrubs are scarce, although many different species are present. The herb layer is astonishingly diverse with more than 120 species recorded, but most of these have relatively low constancy and reflect the patchy distribution of many different taxa. Carex aquatilis var. dives is the primary species, averaging 54% cover, and many stands occur as monotypic reed swamp with cover ranging from 5 to 99%. Some of these stands intergrade with ~Carex utriculata Wet Meadow (CEGL001562)$$ in seasonally flooded depressions. Dodecatheon jeffreyi, Carex utriculata, and Hypericum anagalloides are the only other species with constancy higher than 20%. Species with significant patches include Caltha leptosepala ssp. howellii, Eleocharis quinqueflora, Equisetum fluviatile, Viola macloskeyi, Cicuta douglasii, and Agrostis humilis. Stands may occur on old beaver terraces on seepage slopes and also in sag ponds on slopes prone to slumping. Carex aquatilis var. dives can intermix with forest ecotone or meadow taxa as long as enough soil moisture is present. Plants become progressively dwarfed as conditions become drier.

Diagnostic Characteristics: No Data Available

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: No Data Available

Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: No Data Available

Floristics: No Data Available

Dynamics:  No Data Available
Environmental Description:  No Data Available
Geographic Range: This association occurs from northern California to Alaska (Christy 2004).

Nations: CA,US

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


Confidence Level: Moderate

Confidence Level Comments: No Data Available
Grank: G4

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.2 Temperate to Polar Bog & Fen Formation F016 2.C.2
Division 2.C.2.Na North American Bog & Fen Division D029 2.C.2.Na
Macrogroup 2.C.2.Na.3 Beach Pine / Bog Labrador-tea / Cusick''s Sedge North Pacific Bog & Fen Macrogroup M063 2.C.2.Na.3
Group 2.C.2.Na.3.a Cusick''s Sedge - Water Sedge - Sweetgale Alkaline Fen Group G285 2.C.2.Na.3.a
Alliance A3433 Water Sedge - Livid Sedge - Cusick''s Sedge Alkaline Fen Alliance A3433 2.C.2.Na.3.a
Association CEGL001826 Sitka Sedge Fen CEGL001826 2.C.2.Na.3.a
Concept Lineage: No Data Available

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available
Synonomy: = Carex aquatilis association (Odion et al. 2013)
= Carex aquatilis var. dives (McCain and Christy 2005) [71 plots]
= Carex aquatilis var. dives (Murray 2000)
= Carex aquatilis var. dives (C. sitchensis) Association (Crowe et al. 2004)
= Carex aquatilis var. dives Association (Christy 2004)
= Carex aquatilis var. dives Fen (DiPaolo et al. 2018)
? Carex aquatilis community (Crawford 2003)
= Carex sitchensis - Potentilla palustris variant (Kunze 1994) [(p.84)]
? Carex sitchensis / Equisetum fluviatile (Sitka sedge/swamp horsetail) Community Type (Shephard 1995)
= Carex sitchensis (Kovalchik 1987) [(p.114)]
? Carex sitchensis Community Type (Boggs 2000) [(Sitka Sedge Community Type) CARSIT G5; S5.]
Concept Author(s): J.A. Christy (2004)

Author of Description: J.A. Christy (2004)

Acknowledgements: No Data Available

Version Date: 06-10-06
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