Twin Lakes Bog
Location
Ecological and Physical Description
This RNA consists primarily of an even-aged stand of tamarack (Larix laricina). The most unique features of this RNA site are three small, deep softwater seepage lakes, an undisturbed conifer swamp, and its associated ericad bog. The understory flora is notable for the large number of moccasin flower (Cypripedium acaule).
Mean annual precipitation is 33 inches (82.5 cm). Average annual snowfall is 60 inches (150 cm).
The nearest weather station is in Medford, Wisconsin, located approximately 11 miles (17.6 km) to the southeast.
Precambian granite bedrock underlies this area. The landscape is young in geologic age and characterized by a deranged type of drainage pattern. The predominant soil series is the Sarona Series, which is well-drained soil formed in loamy sand and sandy loam glacial till on moraines.
Three small, deep, softwater seepage lakes (2.3 acres), an undisturbed conifer swamp, and an associated ericad bog are present. The RNA drains into South Twin Lake.
Flora and Fauna
Common Plant Species
| Scientific Name | Common Name | Category | At Risk | Notes |
|---|---|---|---|---|
| Ledum groenlandicum | Labrador tea | Common Shrub Species | ||
| Kalmia polifolia | swamp laurel | Common Shrub Species | ||
| Chamaedaphne calyculata | leatherleaf | Common Shrub Species: | ||
| Nemopanthus mucronata | common mountain holly | Common Shrub Species: | ||
| Ilex verticillata | winterberry | Common Shrub Species: | ||
| Carex disperma, C. lasiocarpa, C. limosa | Sedge sp. | Common Herbaceous Species | ||
| Linnaea borealis | twinflower | Common Herbaceous Species | ||
| Common Herbaceous Species | ||||
| Osmunda cinnamomea | cinnamon fern | Common Herbaceous Species | ||
| Cornus canadensis | bunchberry | Common Herbaceous Species | ||
| Menyanthes trifoliata | buckbean | Common Herbaceous Species | ||
| Utricularia sp. | bladderwort | Common Herbaceous Species | ||
| Drosera intermeida, Drosera rotundifolia | sundew | Common Herbaceous Species | ||
| Sarracenia purpurea | pitcher plant | Common Herbaceous Species | ||
| Habenaria hyperborea | tall northern bog-orchid | Common Herbaceous Species | ||
| Cypripedium acaula | moccasin flower | Common Herbaceous Species | ||
| Nuphar variegata | yellow water lily | Common Herbaceous Species |
Common Animal Species
| Scientific Name | Common Name | Category | At Risk | Notes |
|---|---|---|---|---|
| Vireo solitarius | Solitary vireo | Common Bird Species | ||
| Catharus guttatus | hermit thrush | Common Bird Species | ||
| Mniotilta varia | black-and-white warbler | Common Bird Species | ||
| Zonothrichia albicollis). | white-throated sparrow | Common Bird Species |