Rorippa austriaca - (Crantz) Bess.
Austrian Yellowcress
Taxonomic Status: Accepted
Related ITIS Name(s): Rorippa austriaca (Crantz) Bess. (TSN 22995)
Unique Identifier: ELEMENT_GLOBAL.2.146889
Element Code: PDBRA27020
Informal Taxonomy: Plants, Vascular - Flowering Plants - Mustard Family
 
Kingdom Phylum Class Order Family Genus
Plantae Anthophyta Dicotyledoneae Capparales Brassicaceae Rorippa
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Concept Reference
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Concept Reference: Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.
Concept Reference Code: B94KAR01HQUS
Name Used in Concept Reference: Rorippa austriaca
Conservation Status
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NatureServe Status

Global Status: GNR
Global Status Last Changed: 22Mar1994
Rounded Global Status: GNR - Not Yet Ranked
Nation: United States
National Status: NNA
Nation: Canada
National Status: NNA (13Oct2016)

U.S. & Canada State/Province Status
United States California (SNA), Idaho (SNA), Iowa (SNA), Kentucky (SNA), Massachusetts (SNR), Montana (SNA), Nebraska (SNA), Nevada (SNA), New Hampshire (SNA), New Jersey (SNA), New York (SNA), North Dakota (SNA), Pennsylvania (SNA), Utah (SNA), Washington (SNA), Wisconsin (SNA), Wyoming (SNA)
Canada Alberta (SNA), Manitoba (SNA), Saskatchewan (SNA)

Other Statuses

NatureServe Global Conservation Status Factors

Other NatureServe Conservation Status Information

Distribution
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U.S. States and Canadian Provinces
Color legend for Distribution Map
NOTE: The distribution shown may be incomplete, particularly for some rapidly spreading exotic species.

U.S. & Canada State/Province Distribution
United States CAexotic, IAexotic, IDexotic, KYexotic, MA, MTexotic, NDexotic, NEexotic, NHexotic, NJexotic, NVexotic, NYexotic, PAexotic, UTexotic, WAexotic, WIexotic, WYexotic
Canada ABexotic, MBexotic, SKexotic

Range Map
No map available.

Ecology & Life History Not yet assessed
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Economic Attributes Not yet assessed
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Management Summary Not yet assessed
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Population/Occurrence Delineation Not yet assessed
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Population/Occurrence Viability
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U.S. Invasive Species Impact Rank (I-Rank)
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Disclaimer: While I-Rank information is available over NatureServe Explorer, NatureServe is not actively developing or maintaining these data. Species with I-RANKs do not represent a random sample of species exotic in the United States; available assessments may be biased toward those species with higher-than-average impact.

I-Rank: Low/Insignificant
Rounded I-Rank: Low
I-Rank Reasons Summary: This plant can vigorously compete with native riparian vegetation in California. Once established, it has the ability to cover large areas. However it requires disturbance in wet areas to establish well. Currently found in 16 scattered states across the US. Dispersed long distances by hay contamination.
Subrank I - Ecological Impact: Insignificant
Subrank II - Current Distribution/Abundance: Medium
Subrank III - Trend in Distribution/Abundance: High/Low
Subrank IV - Management Difficulty: Unknown
I-Rank Review Date: 13Apr2004
Evaluator: Killeffer, T. and S. Lu
Native anywhere in the U.S?
Native Range: Native to Russia and Eastern Europe (California Dept. of Food and Agriculture 2003).

Download "An Invasive Species Assessment Protocol: Evaluating Non-Native Plants for their Impact on Biodiversity". (PDF, 1.03MB)
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Screening Questions

S-1. Established outside cultivation as a non-native? YES
Comments: In California is escapes into disturbed or cultivated areas, roadsides, and mud flats (The Jepson Flora Project, no date).

S-2. Present in conservation areas or other native species habitat? Yes
Comments: When established, it competes vigorously and may threaten native species in riparian corridors (California Dept. of Food and Agriculture 2003).

Subrank I - Ecological Impact: Insignificant

1. Impact on Ecosystem Processes and System-wide Parameters:Insignificant
Comments: No reported impacts.

2. Impact on Ecological Community Structure:Insignificant
Comments: No reported impacts.

3. Impact on Ecological Community Composition:Moderate significance
Comments: When established, it competes vigorously and may threaten native species in riparian corridors (California Dept. of Food and Agriculture 2003).

4. Impact on Individual Native Plant or Animal Species:Insignificant
Comments: No reported impacts.

5. Conservation Significance of the Communities and Native Species Threatened:Insignificant
Comments: No reported impacts.

Subrank II. Current Distribution and Abundance: Medium

6. Current Range Size in Nation:High significance
Comments: Established in 16 scattered states across the US, including California, Iowa, Idaho, Kentucky, Massachusetts, Minnesota, Montana, North Dakota, Nebraska, New Hampshire, New Jersey, New York, Pennsylvania, Utah, Washington, and Wisconsin (Kartesz 1999).

7. Proportion of Current Range Where the Species is Negatively Impacting Biodiversity:Low significance
Comments: When established, it competes vigorously and may threaten native species in riparian corridors (California Dept. of Food and Agriculture 2003).

8. Proportion of Nation's Biogeographic Units Invaded:High/Low significance
Comments: In at least 4 TNC ecoregions and in at most more than 35 TNC ecoregions (Inference using data from Kartesz 1999 and TNC Ecoregion 2001 map).

9. Diversity of Habitats or Ecological Systems Invaded in Nation:Insignificant
Comments: When established, it competes vigorously and may threaten native species in riparian corridors. Occupies disturbed and cultivated sites, roadsides, fields, mud flats, and areas where the soil is wet from 6-8 months during the year (California Dept. of Food and Agriculture 2003). Inhabits low wet areas in and near fields in the northern Great Plains (Larson 1993). Found rarely in pastures, cropland, and waste areas in the North Central states (Buchholtz et al. 1960). Muddy areas at edge of creek and mudflats (NYBG 2000).

Subrank III. Trend in Distribution and Abundance: High/Low

10. Current Trend in Total Range within Nation:Medium/Low significance
Comments: Introduced in the US in 1910. By 1935 an infestation covered over 25,000 acres in Modoc County, California along the Pit River. Control efforts beginning in 1935 resulted in the almost complete eradication of the weed there. Surveys conducted in the 60's and the 70's indicated little to no spread of the weed in the area and no movement down the Pit River drainage system. (California Dept. of Food and Agriculture 2003) Now established in 16 scattered states across the US, including California, Iowa, Idaho, Kentucky, Massachusetts, Minnesota, Montana, North Dakota, Nebraska, New Hampshire, New Jersey, New York, Pennsylvania, Utah, Washington, and Wisconsin (Kartesz 1999).

11. Proportion of Potential Range Currently Occupied:Unknown
Comments: Potential to invade along rivers when flooding occurs (California Dept. of Food and Agriculture 2003).

12. Long-distance Dispersal Potential within Nation:Low significance
Comments: Dispersed by contaminated hay (California Dept. of Food and Agriculture 2003).

13. Local Range Expansion or Change in Abundance:High significance
Comments: In the northern Great Plains, this plant shows little proclivity for spreading (Larson 1993). Potential to invade along rivers when flooding occurs (California Dept. of Food and Agriculture 2003).

14. Inherent Ability to Invade Conservation Areas and Other Native Species Habitats:Medium/Low significance
Comments: Primarily establishes in disturbed areas (California Dept. of Food and Agriculture 2003).

15. Similar Habitats Invaded Elsewhere:Unknown

16. Reproductive Characteristics:Moderate significance
Comments: Reproduces vegetatively from aggressive creeping lateral roots that produce new shoots and rarely by seed. Also has persistent stems. Root fragments can produce new plants. (California Dept. of Food and Agriculture 2003)

Subrank IV. General Management Difficulty: Unknown

17. General Management Difficulty:Not ranked

18. Minimum Time Commitment:Not ranked

19. Impacts of Management on Native Species:Not ranked

20. Accessibility of Invaded Areas:Not ranked

Other Considerations: In Germany, introgressively hybridizes with the native R. sylvestris, and the hybrid forms large populations without its parent species.
Authors/Contributors
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Botanical data developed by NatureServe and its network of natural heritage programs (see Local Programs), The North Carolina Botanical Garden, and other contributors and cooperators (see Sources).

References
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  • Bleeker, W. 2003. Abstract of Hybridization and Rorippa austriaca (Brassicaceae) invasion in Germany. Molecular Ecology, 12(7): 1831.

  • Buchholtz, K.P., B.H. Grigsby, O.C. Lee, F.W. Slife, C.J. Willard, and N.J. Volk. (eds) 1960. Weeds of the North Central States. University of Illinois, Agricultural Experimental Station 262 pgs. Available: http://ag.uiuc.edu/~vista/htm_pubs/WEEDS/list.html. (Accessed 2004).

  • California Dept. of Food and Agriculture. 2003. Last updated December 13, 2003. EncycloWeedia: Notes on identification, biology, and management of plants defined as Noxious Weeds by California law. Available at: http://www.cdfa.ca.gov/phpps/ipc/encycloweedia/encycloweedia_hp.htm. (Accessed 2004).

  • Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.

  • Kartesz, J.T. 1999. A synonymized checklist and atlas with biological attributes for the vascular flora of the United States, Canada, and Greenland. First edition. In: Kartesz, J.T., and C.A. Meacham. Synthesis of the North American Flora, Version 1.0. North Carolina Botanical Garden, Chapel Hill, N.C.

  • Larson, G.E. 1993. Aquatic and wetland vascular plants of the northern Great Plains. Gen. Tech. Rep. RM-238. Fort Collins, CO: USDA, Forest Service, Rocky Mountain Forest and Range Experiment Station. Jamestown, NF: Northern Prairie Wildlife Research Center Home Page. Available: http://www.npwrc.usgs.gov/resource/1999/vascplnt/vascplnt.htm (Verson 02Feb99). (Accessed 2004).

  • New York Botanical Garden. 2000. Catalog of invasive plant species of the United States. Available: http://www.nybg.org/bsci/hcol/inva/. (Accessed 2004).

  • The Jepson Flora Project. No date. Index to Treatments from the Jepson Manual. Available: http://ucjeps.berkeley.edu/interchange/I_treat_indexes.html. (Accessed 2004).

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