Gutierrezia petradoria - (Welsh & Goodrich) Welsh
Goldenrod Snakeweed
Taxonomic Status: Accepted
Related ITIS Name(s): Gutierrezia petradoria (S.L. Welsh & Goodrich) S.L. Welsh (TSN 502842)
Unique Identifier: ELEMENT_GLOBAL.2.146775
Element Code: PDAST4B070
Informal Taxonomy: Plants, Vascular - Flowering Plants - Aster Family
 
Kingdom Phylum Class Order Family Genus
Plantae Anthophyta Dicotyledoneae Asterales Asteraceae Gutierrezia
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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: Gutierrezia petradoria
Conservation Status
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NatureServe Status

Global Status: G3
Global Status Last Reviewed: 25Sep2007
Global Status Last Changed: 02Dec1996
Rounded Global Status: G3 - Vulnerable
Reasons: Endemic to 2 mountain ranges in eastern Millard and immediately adjacent Juab counties, central Utah. Known from 19 locations and an estimated 100,000+ plants.
Nation: United States
National Status: N3

U.S. & Canada State/Province Status
Due to latency between updates made in state, provincial or other NatureServe Network databases and when they appear on NatureServe Explorer, for state or provincial information you may wish to contact the data steward in your jurisdiction to obtain the most current data. Please refer to our Distribution Data Sources to find contact information for your jurisdiction.
United States Utah (S3)

Other Statuses

NatureServe Global Conservation Status Factors

Range Extent Comments: In the Canyon Mountains and northern Pavant Range, eastern Millard and immediately adjacent Juab counties, central Utah.

Area of Occupancy: 1-125 4-km2 grid cells
Area of Occupancy Comments: An estimate.

Number of Occurrences: 6 - 20
Number of Occurrences Comments: Nineteen survey and collection based EOs.

Population Size Comments: Locally abundant; 100,000+ plants.

Overall Threat Impact Comments: Grazing impacts appear to have been favorable to this taxon (though not the habitat in general); it is apparently a grazing "increaser species", much like other species of the genus.

Short-term Trend: Unknown
Short-term Trend Comments: No data available.

Long-term Trend: Unknown
Long-term Trend Comments: No data available.

Intrinsic Vulnerability Comments: It is suspected that this taxon is not intrinsically vulnerable.

Other NatureServe Conservation Status Information

Distribution
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Global Range: In the Canyon Mountains and northern Pavant Range, eastern Millard and immediately adjacent Juab counties, central Utah.

U.S. States and Canadian Provinces

Due to latency between updates made in state, provincial or other NatureServe Network databases and when they appear on NatureServe Explorer, for state or provincial information you may wish to contact the data steward in your jurisdiction to obtain the most current data. Please refer to our Distribution Data Sources to find contact information for your jurisdiction.
Color legend for Distribution Map

U.S. & Canada State/Province Distribution
United States UT

Range Map
No map available.


U.S. Distribution by County Help
State County Name (FIPS Code)
UT Juab (49023), Millard (49027)
* Extirpated/possibly extirpated
U.S. Distribution by Watershed Help
Watershed Region Help Watershed Name (Watershed Code)
16 Lower Sevier (16030005)+
+ Natural heritage record(s) exist for this watershed
* Extirpated/possibly extirpated
Ecology & Life History
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Basic Description: A perennial herb with stems growing up to 4 dm tall from a woody base. Numerous yellow flower heads bloom August to October.
Habitat Comments: Dry, rocky, open to semi-open places in the Canyon and Pavant mountains of Utah. 1800-2700 m elevation.
Economic Attributes Not yet assessed
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Management Summary Not yet assessed
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Population/Occurrence Delineation
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Minimum Criteria for an Occurrence: A natural occurrence of one or more plants.
Separation Barriers: EOs are separated by either: 1 kilometer or more across unsuitable habitat or altered and unsuitable areas; or 2 kilometers or more across apparently suitable habitat not known to be occupied.
Separation Distance for Unsuitable Habitat: 1 km
Separation Distance for Suitable Habitat: 2 km
Separation Justification: The rationale for this large a separation distance across suitable but apparently unoccupied habitat is that it is likely additional research will find this habitat to be occupied. It can often be assumed that apparently unconnected occurrences will eventually be found to be more closely connected. No information on mobility of pollen and propagules is available on which to base the separation distance for this species.
Date: 18Jun2002
Author: Ben Franklin
Population/Occurrence Viability
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Excellent Viability: SIZE: 5000 or more individuals (based on available EOR data). This plant appears to be an increaser, it, in its over-grazed meadow habitats, exhibiting a dominance possibly not present in a more natural environment. CONDITION: The occurrence has an excellent likelihood of long-term viability as evidenced by the presence of multiple age classes and evidence of flowering and fruiting, indicating that the reproductive mechanisms are intact. This occurrence should be in a high-quality site with less than 1% cover of exotic plant species and/or no significant anthropogenic disturbance. LANDSCAPE CONTEXT: The occurrence is surrounded by an area that is unfragmented and includes the ecological processes needed to sustain this species. This species is apparently always found growing on igneous gravels (Welsh et al. 1993).
Good Viability: SIZE: 1500 to 4999 individuals (based on available EOR data). CONDITION: 1500 to 4999 individuals (based on available EOR data). LANDSCAPE CONTEXT: The occurrence should have a good likelihood of long-term viability as evidenced by the presence of multiple age classes and evidence of flowering and fruiting, indicating that the reproductive mechanisms are intact. Anthropogenic disturbance within the occurrence is minimal. If exotic species are present, they comprise less than 10% of the total ground cover.
Fair Viability: SIZE: The surrounding landscape should contain the ecological processes needed to sustain the occurrence but may be fragmented and/or impacted by humans. CONDITION: 20 to 1499 individuals (based on available EOR data). LANDSCAPE CONTEXT: The occurrence may be less productive than the above situations, but is still viable, with multiple age classes and evidence of flowering and fruiting, indicating that the reproductive mechanisms are intact. The occupied habitat is somewhat degraded (exotic plant species make up between 10-50% of the total ground cover and/or there is a moderate level of anthropogenic disturbance).
Poor Viability: SIZE: There may be significant human disturbance, but the ecological processes needed to sustain the species are still intact. CONDITION: Less than 20 individuals (based on available EOR data). LANDSCAPE CONTEXT: Little or no evidence of successful reproduction is observed (poor seedling recruitment, no flowering or fruiting observed, or poor age class distribution). Exotic plant species make up greater than 50% of the total ground cover, and/or there is a significant level of human disturbance.
Justification: SIZE: Large populations in high quality sites are presumed to contain a high degree of genetic variability, to have a low susceptibility to the effects of inbreeding depression, and to be relatively resilient. EOs not meeting "C"-rank criteria are likely to have a very high probability of inbreeding depression and extirpation due to natural stochastic processes and/or occur in degraded habitat with low long-term potential for survival. CONDITION: Large populations in high quality sites are presumed to contain a high degree of genetic variability, to have a low susceptibility to the effects of inbreeding depression, and to be relatively resilient. EOs not meeting "C"-rank criteria are likely to have a very high probability of inbreeding depression and extirpation due to natural stochastic processes and/or occur in degraded habitat with low long-term potential for survival. LANDSCAPE CONTEXT: Large populations in high quality sites are presumed to contain a high degree of genetic variability, to have a low susceptibility to the effects of inbreeding depression, and to be relatively resilient. EOs not meeting "C"-rank criteria are likely to have a very high probability of inbreeding depression and extirpation due to natural stochastic processes and/or occur in degraded habitat with low long-term potential for survival.
Key for Ranking Species Element Occurrences Using the Generic Approach (2008).
U.S. Invasive Species Impact Rank (I-Rank) Not yet assessed
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Authors/Contributors
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NatureServe Conservation Status Factors Edition Date: 04Dec1996
NatureServe Conservation Status Factors Author: Neise, J.; update B. Franklin & K. Maybury (1996); rev. B. Franklin (2007)

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
Help
  • Albee, B.J., L.M. Shultz, and S. Goodrich. 1988. Atlas of the vascular plants of Utah. Utah Museum Natural History Occasional Publication 7, Salt Lake City, Utah. 670 pp.

  • Cronquist, A. 1994. Asterales. In A. Cronquist, A.H. Holmgren, N.H. Holmgren, J.L. Reveal, and P.K. Holmgren. Intermountain flora: Vascular plants of the Intermountain West, U.S.A. Vol. 5. New York Botanical Garden, Bronx. 496 pp.

  • Cronquist, A., A. H. Holmgren, N. H. Holmgren, J. L. Reveal, and P. K. Holmgren. 1994. Intermountain flora: Vasculr plants of the Intermountain West, U.S.A., Volume 5. Published for The New York Botanical Garden, Bronx, New York.

  • Franklin, M.A. 1991. Report for 1990 Challenge Cost Share Project, Fishlake National Forest. Target species: Aster kingii barnebyana (Welsh & Goodrich) Welsh, Gutierrezia petradoria (Welsh & Goodrich) Welsh, and Epilobium nevadense Munz. Utah Natural Heritage Program, Utah Dept. Natural Resources. 8 pp + appendices.

  • 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.

  • Lane, M.A. 1985. Taxonomy of Gutierrezia (Compositae: Asteraceae) in North America. Systematic Botany 10(1): 7-28.

  • Reid, D.P. 1996. Letter of October 25 to C.L. Christie. Fishlake National Forest.

  • Welsh, S. L. 1981. New taxa of western plants-in tribute. Brittonia 33(3): 294-303.

  • Welsh, S. L., N. D. Atwood, S. Goodrich, and L. C. Higgins [eds]. 1993. A Utah Flora (2nd ed., revised). Provo, UT: Brigham Young University. 986 pp.

  • Welsh, S. L., and E. Neese. 1983. New species of Hymenoxys and Perityle (Compositae) from Utah. Great Basin Naturalist 43(2): 373-374.

  • Welsh, S.L., N.D. Atwood, S. Goodrich, and L.C. Higgins (eds.) 1993. A Utah flora. 2nd edition. Brigham Young Univ., Provo, Utah. 986 pp.

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