Standards for Broad Terrestrial Ecosystem Classification and Mapping
for British Columbia

Table of contents

7.0 FORESTED WETLAND AND RIPARIAN ECOSYSTEMS

BB Black Spruce Bog

General Description

A bog wetland class that typically is a sparse to open, treed organic wetland, with a peat moss dominated understory, black spruce and sometimes, tamarack.

Distribution

Found at low to mid-elevations, between 300 and 1250m. It is common throughout the Taiga and Boreal Plains, Northern Boreal Mountains, Sub-Boreal Interior, Nass Basin, Southern Rocky Mountain Trench and Fraser Plateau.

Biogeoclimatic Units

BWBSdk1

BWBSwk2

ICHvk2

SBPSmk

SBSmk1

SBSmw

BWBSdk2

BWBSwk3

ICHwk3

SBSdh

SBSdw3

SBSvk

BWBSmw1

ICHmc2

SBPSdc

SBSdk

SBSmc2

SBSwk1

BWBSmw2

ICHmm

SBPSmc

SBSdw2

SBSmc3

SWBmk

BWBSwk1

         

Climax Vegetation

Typically a sparse canopy composed of stunted black spruce, with some white spruce, tamarack and lodgepole pine often present. The shrub layer is characteristically dominated by Labrador tea; secondary species include scrub birch, black twinberry and various species of willow. Sedges are almost always present in a well developed herb layer. Numerous herb species are represented including lingonberry, horsetails, creeping-snowberry, bog cranberry, crowberry, marsh cinquefoil, bunchberry and common mitrewort. Sphagnum moss is almost always present, usually dominant, forming thick hummocky mats. Red-stemmed feathermoss, step moss, glow moss and golden fuzzy fen moss are also present.

Successional Vegetation

Typically species similar to the climax species occur on sites following disturbance.

Physical Environment

Found in level or depressional sites that are situated on poorly drained (wet), thick organic deposits.

Atypical Sites

Typically found in northern locations (N of 55 ). Tamarack is typically the only secondary canopy species. Labrador Tea remains dominant in the shrub layer while black twinberry is less common. Lingonberry, red swamp current and cloudberry are present in the herb layer. Still a sphagnum dominated moss and lichen layer.

References

Banner, A., W. MacKenzie, S. Haeussler, S. Thomson, J. Pojar and R. Trowbridge. 1993. A Field Guide to Site Identification and Interpretation for the Prince Rupert Forest Region. Land Manage. Handb. No. 26., B.C. Min. For., Victoria, B.C.

Cariboo Forest Region. 1989. A Field Guide for the Identification and Interpretation of Ecosystems of the Cariboo Forest Region. B.C. Min. For., Williams Lake, B.C.

Delong, C., G. Hope and A. McLeod. 1984. A Field Guide for the Identification and Interpretation of Ecosystems of the SBSe2, Prince George Forest Region. First Approximation. B.C. Min. For., Prince George, B.C.

Delong, C., A. MacKinnon and L. Jang. 1990. A Field Guide for the Identification and Interpretation of Ecosystems of the Northeast Portion of the Prince George Forest Region. LandManage. Handb. 22., B.C. Min. For., Victoria, B.C.

Delong, C., D. Tanner and M.J. Jull. 1993. A Field Guide for the Identification and Interpretation of Ecosystems of the Southwest Portion of the Prince George Forest Region. Land Manage. Handb. 24, B.C. Min. For., Victoria, B.C.

MacKinnon, A., C. Delong and D Meidinger. 1990. A Field Guide to the Identification and Interpretation of Ecosystems of the Northwest Portion of the Prince George Forest Region. Land Manage. Handb. 21, B.C. Min. For., Victoria, B.C.

Meidinger, D. 1995. A field guide for site identification and interpretation for the southeast portion of the Prince George forest region (Draft). B.C. Min. For., Victoria, B.C.

CB Cedars - Shore Pine Bog

General Description

A bog wetland class that typically is an open to dense forest, with moss and shrub dominated understories. Sites are found in poorly drained outer coastal areas; often containing a varying mixture of western hemlock, western redcedar, yellow-cedar and shore pine.

Distribution

Found at lower elevations throughout the Coast and Mountains, as well as the Georgia Depression, ranging from sea level to 1100m.

Biogeoclimatic Units

CDFmm

CWHds2

CWHms1

CWHvh2

CWHwh1

CWHws2

CWHdm

CWHmm1

CWHms2

CWHvm1

CWHwm

CWHxm

CWHds1

CWHmm2

CWHvh1

CWHvm2

CWHws1

 

Climax Vegetation

An open, stunted canopy scattered with lodgepole/shore pine, western redcedar, western hemlock and yellow-cedar characterize these sites. Typical understory species include salal, red huckleberry, Labrador tea, false azalea, oval-leaved blueberry and Alaskan blueberry. Herbs include bunchberry, skunk cabbage, deer fern, sedges, deer cabbage and fern-leaved goldthread. Sphagnum dominates the moss and lichen layer; step moss, lanky moss, common green sphagnum and Oregon-beaked moss are also often present.

Atypical Sites

Along the Northcoast and in the Queen Charlottes Islands, similar species form a stunted open canopy. The dense to moderate shrub layer typically includes Labrador tea, bog laurel, bog rosemary, bog cranberry and salal. Crowberry, cotton-grass and sedges are commonly found in the herb layer. Peat moss dominates the moss and lichen layer forming a thick mat-like cover.

Physical Environment

Typically found in level areas or depressions where there is a poorly drained, thick organic layer. Sites often located in lower to crest mesoslope positions.

References

Banner, A., W. MacKenzie, S. Haeussler, S. Thompson, J. Pojar and R. Trowbridge. 1993. A Field Guide to Site Identification and Interpretation for the Prince Rupert Forest Region. Land Manage. Handb. No. 26., B.C. Min. For., Victoria, B.C.

Green, R.N. and K. Klinka. 1994. A Field Guide to Site Identification and Interpretation for the Vancouver Forest Region, Land Manage. Handb. 28, B.C. Min. For., Victoria, B.C.

CR Black Cottonwood Riparian Habitat Class

General Description

Typically a dense conifer and deciduous or broad-leaved forest, with shrub-dominated understories, that includes plant communities which progress through a varying mixture of shrubs and black cottonwood.

Distribution

Found throughout the province along major rivers where floodplains occur, ranging in elevation from sea level to approximately 600m.

Biogeoclimatic Units

Coastal sites

CDFmm

CWHds1

CWHmm1

CWHvm1

CWHxm

 

CWHdm

CWHds2

       

Central Interior sites

BGxh1

BGxw2

ICHmc1

ICHvc

IDF

PPdh1

BGxh2

BGxh3

ICHmc2

ICHwc

 

PPxh2

Northern Interior sites

ICHmc1

ICHvc

       

Climax Vegetation

Coastal sites

Open broad-leaved or deciduous forest composed of black cottonwood, red alder and bigleaf maple, with some western red-cedar. Willows dominate the understory; along with salmonberry, red elderberry, stink currant and red-osier dogwood. Wildrye, sword fern, three-leaved foamflower, scouring-rush and horsetails may be present in the herb layer. The moss and lichen layer is sparse and consists of palm tree moss and leafy moss.

Central Interior sites

The presence of black cottonwood characterizes the stand; trembling aspen, ponderosa pine, paper birch and Douglas-fir also occur as minor components. Common snowberry, red-osier dogwood and Nootka rose constitute the shrub layer. Kentucky bluegrass and star-flowered Solomon's seal dominate a diverse herb layer. Secondary herb species include showy aster, sweet cicely and common dandelion. The moss and lichen layer is characteristically poorly developed.

Northern Interior sites

Black cottonwood dominates the canopy; subalpine fir may be scattered in the subcanopy. Highbush-cranberry, red-osier dogwood, devil's club, thimbleberry and Sitka alder form a dense, tall shrub layer. Herbs such as oakfern, twisted stalk, foamflower, wintergreen and lady fern are common. The moss and lichen layer is typically very sparse.

Successional Vegetation

Coastal sites

In theory these floodplain sites should proceed to a Sitka spruce, western redcedar or grand fir dominated climax forest, depending on the locality. However, frequent flooding prevents this from occurring.

Early successional stages are usually dominated by shrubby vegetation, typically a dense cover of willows. Older sites may have a sword fern dominated understory.

Central Interior sites

Early successional stages are usually dominated by shrubby vegetation, typically a dense cover of willows.

Northern Interior sites

Early successional stages are usually dominated by shrubby vegetation, typically a dense cover of willows.

Physical Environment

Coastal sites

Typically found on mesic to moist floodplains with medium to rich gravely soils.

Central Interior sites

Occurs on moist to very moist, gentle lower to toe slopes and level areas situated on actively flooding fluvial deposits.

Northern Interior sites

Typically found on level sites situated on active floodplains (medium to low benches) of larger rivers.

Atypical Sites

Coastal sites

On sandy sites bigleaf maple and red-osier dogwood may dominate.

Central Interior sites

Wetter sites are characterized by water birch in the shrub layer and the presence of horsetail in the herb layer.

References

Banner, A., W. MacKenzie, S. Haeussler, S.Thomson, J. Pojar and R. Trowbridge. 1993. A Field Guide to Site Identification and Interpretation for the Prince Rupert Forest Region. Land Manage. Handb. No. 26., B.C. Min. For., Victoria, B.C.

Braumandl, T. and M.P. Curran, 1992. A Field Guide for Site Identification and Interpretation for the Nelson Forest Region. Land Manage. Handb. No. 20., B.C. Min. For., Victoria, B.C.

Green, R.N. and K. Klinka. 1994. A Field Guide to Site Identification and Interpretation for the Vancouver Forest Region, Land Manage. Handb. 28, B.C. Min. For., Victoria, B.C.

Lloyd, D., K. Angove, G. Hope and C. Thompson. 1990. A Guide to Site Identification and Interpretation for the Kamloops Forest Region. Land Manage. Handb. 23, B.C. Min. For., Victoria, B.C.


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