Overview

Distribution

National Distribution

Canada

Origin: Native

Regularity: Regularly occurring

Currently: Present

Confidence: Confident

United States

Origin: Unknown/Undetermined

Regularity: Regularly occurring

Currently: Unknown/Undetermined

Confidence: Confident

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Global Range: Juncus stygius is an interruptedly circumboreal species. Its range stretches south in the United States to northern Maine, New York, Michigan, Wisconsin, and Minnesota.

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Ecology

Habitat

Comments: Juncus stygius generally occurs in very wet, often- calcareous, sedge-dominated habitats in full sun. Its habitats include bogs, marshes, shallow pools, and patterned peatlands.

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Population Biology

Number of Occurrences

Note: For many non-migratory species, occurrences are roughly equivalent to populations.

Estimated Number of Occurrences: 21 to >300

Comments: J. stygius occurs at 9 sites in Maine; 4 in Michigan; 10 in Minnesota; 1 in Wisconsin; and 16 in Saskatchewan. Many additional occurrences are likely in Canada (at the center of the species range) and possible in Eurasia.

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Molecular Biology and Genetics

Molecular Biology

Barcode data: Juncus stygius

The following is a representative barcode sequence, the centroid of all available sequences for this species.


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Statistics of barcoding coverage: Juncus stygius

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 3
Specimens with Barcodes: 3
Species With Barcodes: 1
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Conservation

Conservation Status

National NatureServe Conservation Status

Canada

Rounded National Status Rank: N4 - Apparently Secure

United States

Rounded National Status Rank: NNR - Unranked

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NatureServe Conservation Status

Rounded Global Status Rank: G5 - Secure

Reasons: Juncus stygius occurs sporadically over a very broad range. Little information is available about its abundance in the far northern parts of its range, especially outside of North America, but these areas also are little- disturbed by human activities.

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Global Short Term Trend: Relatively stable (=10% change)

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Threats

Comments: The greatest threat to Juncus stygius is the loss of its wetland habitats through development, peat mining, logging, etc.

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