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More Tanacetum vulgare resources

Tanacetum vulgare

Common Names: common tansy; golden buttons; garden tansy

Evaluated on: 4/14/04

List committee review date: 14/05/2004

Re-evaluation date:

Evaluator(s)

Rob Wilson
UCCE
707 Nevada St. Susanville, CA 96130
530-251-8132
rgwilson@ucdavis.edu

List committee members

Carla Bossard
Alison Stanton
Cynthia Roye
Joe DiTomaso
Peter Warner

General Comments

No general comments for this species

Table 2. Criteria, Section, and Overall Scores

Overall Score? Moderate

Alert Status? No Alert

Documentation? 3 out of 5

Score

Documentation

1.1

?Impact on abiotic ecosystem processes

U. Unknown

Reviewed Scientific Publication

Impact?
Four-part score UBBD Total Score
B

1.2

?Impact on plant community

B. Moderate

Reviewed Scientific Publication

1.3

?Impact on higher trophic levels

B. Moderate

Other Published Material

1.4

?Impact on genetic integrity

D. None

Observational

2.1

?Role of anthropogenic and natural disturbance in establishment

B. Moderate

Reviewed Scientific Publication

Invasiveness?
Total Points
14 Total Score B

2.2

?Local rate of spread with no management

B. Increases less rapidly

Other Published Material

2.3

?Recent trend in total area infested within state

C. Stable

Observational

2.4

?Innate reproductive potential
(see Worksheet A)

A. High

Other Published Material

2.5

?Potential for human-caused dispersal

B. Moderate

Other Published Material

2.6

? Potential for natural long-distance dispersal

B. Occasional

Other Published Material

2.7

?Other regions invaded

B. Invades 1 or 2 ecological types

Anecdotal

3.1

?Ecological amplitude/Range
(see Worksheet C)

A. Widespread

Anecdotal

Distribution?
Total Score B

3.2

?Distribution/Peak frequency
(see Worksheet C)

D. Very low

Anecdotal

Table 3. Documentation

Scores are explained in the "Criteria for Categorizing Invasive Non-Native Plants that Threaten Wildlands".

Section 1: Impact
Question 1.1 Impact on abiotic ecosystem processes? Consider the impact on the natural range and variation of abiotic ecosystem processes and system-wide parameters in ways that significantly diminish the ability of native species to survive and reproduce. Alterations that determine the types of communities that can exist in a given area are of greatest concern. Examples of abiotic processes include: - fire occurrence, frequency, and intensity; - geomorphological changes such as erosion and sedimentation rates; - hydrological regimes, including soil water table; - nutrient and mineral dynamics, including salinity, alkalinity, and pH; - light availability (e.g. when an aquatic invader covers an entire water body that would otherwise be open). Select the one letter below that best describes this species' most severe impact on an abiotic ecosystem process: A. Severe, possibly irreversible, alteration or disruption of an ecosystem process. B. Moderate alteration of an ecosystem process. C. Minor alteration of an ecosystem process. D. Negligible perceived impact on an ecosystem process. U. Unknown.	U Reviewed Scientific Publication
Identify ecosystem processes impacted: There is very little information available on common tansy effects on abiotic ecoystem processes. Sources of information: LeCain, Ron and Sheley, Roger. 2002. Common Tansy (Tanacetum vulgare). MontGuide fact sheet #9911. Montana State University Extension Service
Question 1.2 Impact on plant community composition, structure, and interactions? Consider the cumulative ecological impact of this species to the plant communities it invades. Give more weight to changes in plant composition, structure, and interactions that involve rare or keystone species or rare community types. Examples of severe impacts include: - formation of stands dominated (>75% cover) by the species; - occlusion (>75% cover) of a native canopy, including a water surface, that eliminates or degrades layers below; - significant reduction or extirpation of populations of one or more native species. Examples of impacts usually less than severe include: - reduction in propagule dispersal, seedling recruitment, or survivorship of native species; - creation of a new structural layer, including substantial thatch or litter, without elimination or replacement of a pre-existing layer; - change in density or depth of a structural layer; - change in horizontal distribution patterns or fragmentation of a native community; - creation of a vector or intermediate host of pests or pathogens that infect native plant species. Select the one letter below that best describes this species' impact on community composition, structure and interactions: A. Severe alteration of plant community composition, structure, or interactions. B. Moderate alteration of plant community composition. C. Minor alteration of community composition. D. Negligible impact known; causes no perceivable change in community composition, structure, or interactions. U. Unknown.	B Reviewed Scientific Publication
Identify type of impact or alteration: Common tansy is commonly found along roads, fences, streambanks, waste areas, and pastures. Because it is unpalatable to most livestock species, it is a rapid increaser in pastures. In meadows and mountain stream/river valleys common tansy often forms dense stands. Common tansy has also been documented to invade and form dense stands in disturbed areas. In Central Europe, common tansy is known as a highly competitive and aggressive plant which often forms dominant stands. It is capable of colonizing disturbed sites and becoming dominant in early to mid-successional stages. The clonal species is known to have a growth strategy where the main population expands as a thick cluster of stems (phalanx system of spread). Sources of information: LeCain, Ron and Sheley, Roger. 2002. Common Tansy (Tanacetum vulgare). MontGuide fact sheet #9911. Montana State University Extension Service Rebele, Franz. 2000. Competition and coexistence of rhizomatous perennial plants along a nutrient gradient. Plant Ecology 147: 77-94
Question 1.3 Impact on higher trophic levels? Consider the cumulative impact of this species on the animals, fungi, microbes, and other organisms in the communities that it invades. Although a non-native species may provide resources for one or a few native species (e.g. by providing food, nesting sites, etc.), the ranking should be based on the species' net impact on all native species. Give more weight to changes in composition and interactions involving rare or keystone species or rare community types. Examples of severe impacts include: - extirpation or endangerment of an existing native species or population; - elimination or significant reduction in native species' nesting or foraging sites, cover, or other critical resources (i.e., native species habitat), including migratory corridors. Examples of impacts that are usually less than severe include: - minor reduction in nesting or foraging sites, cover, etc. for native animals; - minor reduction in habitat connectivity or migratory corridors; - interference with native pollinators; - injurious components, such as awns or spines that damage the mouth and gut of native wildlife species, or production of anti-digestive or acutely toxic chemical that can poison native wildlife species. Select the one letter below that best describes this species' impact on community composition and interactions: A. Severe alteration of higher trophic populations, communities, or interactions. B. Moderate alteration of higher trophic level populations, communities, or interactions. C. Minor alteration of higher trophic level populations, communities or interactions. D. Negligible impact; causes no perceivable change in higher trophic level populations, communities, or interactions. E. Unknown.	B Other Published Material
Identify type of impact or alteration: Common tansy produces alkaloids and volatile oils that can be toxic at high doses to both humans and livestock. Common tansy oils can also cause skin irritation and algeric reactions in humans. Common tansy oils have also been shown to have insect repellant properties. Distilled oil has been shown to deter mosquitoes, whiteflys, and Colorado potato beetle. These results suggest common tansy may deter some native insects and wildlife from visiting native plants found within infested areas, although bees and other insects also have been documented to pollinate common tansy. Sources of information: LeCain, Ron and Sheley, Roger. 2002. Common Tansy (Tanacetum vulgare). MontGuide fact sheet #9911. Montana State University Extension Service Hough-Goldstein, J.A. 1990. Antifeedant effects of common herbs on the Colorado potato beetle. Environ-Entomol. Entomological Society of America. V. 19, p. 234-238
Question 1.4 Impact on genetic integrity? Consider whether the species can hybridize with and influence the proportion of individuals with non-native genes within populations of native species. Mechanisms and possible outcomes include: - production of fertile or sterile hybrids that can outcompete the native species; - production of sterile hybrids that lower the reproductive output of the native species. Select the one letter below that best describes this species' impact on genetic integrity: A. Severe (high proportion of individuals). B. Moderate (medium proportion of individuals). C. Minor (low proportion of individuals). D. No known hybridization. U. Unknown.	D Observational
Unknown There is one native species of Tanacetum in California Sources of information: Calflora; Jepson Manual 1993
Section 2: Invasiveness
Question 2.1 Role of anthropogenic and natural disturbance in establishment? Assess this species' dependence on disturbance: both human and natural: for establishment in wildlands. Examples of anthropogenic disturbances include: - grazing, browsing, and rooting by domestic livestock and feral animals; - altered fire regimes, including fire suppression; - cultivation; - silvicultural practices; - altered hydrology due to dams, diversions, irrigation, etc.; - roads and trails; - construction; - nutrient loading from fertilizers, runoff, etc. Examples of natural disturbance include: - wildfire; - floods; - landslides; - windthrow; - native animal activities such as burrowing, grazing, or browsing. Select the first letter in the sequence below that describes the ability of this species to invade wildlands: A. Severe invasive potential: this species can establish independent of any known natural or anthropogenic disturbance. B. Moderate invasive potential: this species may occasionally establish in undisturbed areas but can readily establish in areas with natural disturbances. C. Low invasive potential: this species requires anthropogenic disturbance to establish. D. No perceptible invasive potential: this species does not establish in wildlands (though it may persist from former cultivation). U. Unknown.	B Other Published Material
Describe role of disturbance: Common tansy can spread by seeds and rhizomes. It has a phalanx growth strategy. Since common tansy often infests natural areas that lack a lot of human disturbance, natural disturbances may play a significant role in the spread of common tansy. The seed can be moved small distances by wind. Common tansy often spreads along fence lines, so birds and livestock may move seed. Common tansy often spreads along waterways. Since seeds have been documented to move in ballast water, seed probably float and spread along waterways. Sources of information: LeCain, Ron and Sheley, Roger. 2002. Common Tansy (Tanacetum vulgare). MontGuide fact sheet #9911. Montana State University Extension Service
Question 2.2 Local rate of spread with no management? Assess this species' rate of spread in existing localized infestations where the proportion of available habitat invaded is still small when no management measures are implemented. Select the one letter below that best describes the rate of spread: A. Increases rapidly (doubling in <10 years) B. Increases, but less rapidly C. Stable D. Declining U. Unknown	B Other Published Material
Describe rate of spread: Unkown to author. In Plumas County, common tansy populations have become dense and spread along mountain valleys and/or meadows. In Montana and western Canadian provinces common tansy has been documented to spread rapidly in disturbed areas. Sources of information: LeCain, Ron and Sheley, Roger. 2002. Common Tansy (Tanacetum vulgare). MontGuide fact sheet #9911. Montana State University Extension Service Personal communication with Carl Bishop, Plumas CDFA Ag. Commissioner
Question 2.3 Recent trend in total area infested within state? Assess the overall trend in the total area infested by this species statewide. Include current management efforts in this assessment and note them. Select the one letter below that best describes the current trend: A. Increasing rapidly (doubling in total range statewide in <10 years) B. Increasing, but less rapidly C. Stable D. Declining U. Unknown	C Observational
Describe trend: unknown to author, has not appeared to spread much in California despite being much more common in other states. Sources of information: DiTomaso, J.M. (ditomaso@vegmail.ucdavis.edu), observational
Question 2.4 Innate reproductive potential? Assess the innate reproductive potential of this species. Worksheet A is provided for computing the score.	A Other Published Material
Describe key reproductive characteristics: Common tansy is a perennial that reproduces by seed and rhizomes. Common tansy plants often form dense clumps of stems that produce numerous disc flowers during mid-summer. Sources of information: LeCain, Ron and Sheley, Roger. 2002. Common Tansy (Tanacetum vulgare). MontGuide fact sheet #9911. Montana State University Extension Service Rebele, Franz. 2000. Competition and coexistence of rhizomatous perennial plants along a nutrient gradient. Plant Ecology 147: 77-94
Question 2.5 Potential for human-caused dispersal? Assess whether this species is currently spread: or has high potential to be spread: by direct or indirect human activity. Such activity may enable the species to overcome natural barriers to dispersal that would not be crossed otherwise, or it may simply increase the natural dispersal of the species. Possible mechanisms for dispersal include: - commercial sales for use in agriculture, ornamental horticulture, or aquariums; - use as forage, erosion control, or revegetation; - presence as a contaminant (seeds or propagules) in bulk seed, hay, feed, soil, packing materials, etc.; - spread along transportation corridors such as highways, railroads, trails, or canals; - transport on boats or boat trailers. Select the one letter below that best describes human-caused dispersal and spread: A. High: there are numerous opportunities for dispersal to new areas. B. Moderate: human dispersal occurs, but not at a high level. C. Low: human dispersal is infrequent or inefficient. D. Does not occur. U. Unknown.	B Other Published Material
Identify dispersal mechanisms: Common tansy is sometimes planted as an ornamental and/or herb. Common tansy often spread along roads. It can be transported by moving soil with root parts and can be moved with livestock. Common tansy has been shown to move in ballast water and also in contaminated crop seed. Sources of information: LeCain, Ron and Sheley, Roger. 2002. Common Tansy (Tanacetum vulgare). MontGuide fact sheet #9911. Montana State University Extension Service Rebele, Franz. 2000. Competition and coexistence of rhizomatous perennial plants along a nutrient gradient. Plant Ecology 147: 77-94
Question 2.6 Potential for natural long-distance dispersal? We have chosen 1 km as the threshold of "long-distance." Assess whether this species is frequently spread, or has high potential to be spread, by animals or abiotic mechanisms that can move seed, roots, stems, or other propagules this far. The following are examples of such natural long-distance dispersal mechanisms: - the species' fruit or seed is commonly consumed by birds or other animals that travel long distances; - the species' fruits or seeds are sticky or burred and cling to feathers or hair of animals; - the species has buoyant fruits, seeds, or other propagules that are dispersed by flowing water; - the species has light propagules that promote long-distance wind dispersal; - The species, or parts of it, can detach and disperse seeds as they are blown long distances (e.g., tumbleweed). Select the one letter below that best describes natural long-distance dispersal and spread: A. Frequent long-distance dispersal by animals or abiotic mechanisms. B. Occasional long-distance dispersal by animals or abiotic mechanisms. C. Rare dispersal more than 1 km by animals or abiotic mechanisms. D. No dispersal of more than 1 km by animals or abiotic mechanisms. U. Unknown.	B Other Published Material
Identify dispersal mechanisms: Seed can move in water along streams and rivers. Seed is probably moved by birds and rodents. Sources of information: LeCain, Ron and Sheley, Roger. 2002. Common Tansy (Tanacetum vulgare). MontGuide fact sheet #9911. Montana State University Extension Service Rebele, Franz. 2000. Competition and coexistence of rhizomatous perennial plants along a nutrient gradient. Plant Ecology 147: 77-94
Question 2.7 Other regions invaded? Assess whether this species has invaded ecological types in other states or countries outside its native range that are analogous to ecological types not yet invaded in your state (see Worksheets B, C, and D for California, Arizona, and Nevada, respectively, in Part IV for lists of ecological types). This information is useful in predicting the likelihood of further spread within your state. Select the one letter below that best describes the species' invasiveness in other states or countries, outside its native range. A. This species has invaded 3 or more ecological types elsewhere that exist in your state and are as yet not invaded by this species (e.g. it has invaded Mediterranean grasslands, savanna, and maquis in southern Europe, which are analogous to California grasslands, savanna, and chaparral, respectively). B. Invades 1 or 2 ecological types that exist but are not yet invaded in your state. C. Invades elsewhere but only in ecological types that it has already invaded in the state. D. Not known as an escape anywhere else. U. Unknown.	B Anecdotal
Identify other regions: Common tansy is reported as a problem throughout the temperate regions of North America. Common tansy tolerates a wide range of precipitation and temerature zones, giving it the potential to occupy every county in Montana. Sources of information: LeCain, Ron and Sheley, Roger. 2002. Common Tansy (Tanacetum vulgare). MontGuide fact sheet #9911. Montana State University Extension Service Rebele, Franz. 2000. Competition and coexistence of rhizomatous perennial plants along a nutrient gradient. Plant Ecology 147: 77-94
Section 3: Distribution
Question 3.1 Ecological amplitude/Range? Refer to Worksheet C and select the one letter below that indicates the number of different ecological types that this species invades. A. Widespread: the species invades at least three major types or at least six minor types. B. Moderate: the species invades two major types or five minor types. C. Limited: the species invades only one major type and two to four minor types. D. Narrow: the species invades only one minor type. U. Unknown.	A Anecdotal
Little information available on California Distribution. Common tansy has been documented in 12 CA counties primarily in Northern California. In Plumas County, common tansy is commonly found within stream and river valleys and within meadows. It is often found in natural conditions. Sources of information: Calflora and personal communication with Carl Bishop , Plumas CDFA Ag. Commissioner
Question 3.2 Distribution/Peak frequency? To assess distribution, record the letter that corresponds to the highest percent infested score entered in Worksheet C for any ecological type.	D Anecdotal
Describe distribution: Unknown to author, although populations are unlikely to cover more than 5% of any ecological type. Sources of information:

Worksheet A - Innate reproductive potential

Reaches reproductive maturity in 2 years or less	Yes
Dense infestations produce >1,000 viable seed per square meter	Yes
Populations of this species produce seeds every year.	Yes
Seed production sustained over 3 or more months within a population annually	Unknown
Seeds remain viable in soil for three or more years	Unknown
Viable seed produced with both self-pollination and cross-pollination	Unknown
Has quickly spreading vegetative structures (rhizomes, roots, etc.) that may root at nodes	Yes
Fragments easily and fragments can become established elsewhere	Unknown
Resprouts readily when cut, grazed, or burned	Yes
Total points:	6
Total unknowns:	4
Total score:	A? Scoring Criteria for Worksheet A A. High reproductive potential (6 or more points). B. Moderate reproductive potential (4-5 points). C. Low reproductive potential (3 points or less and less than 3 Unknowns). U. Unknown (3 or fewer points and 3 or more Unknowns).

Related traits:

Worksheet B - Arizona Ecological Types is not included here

Worksheet C - California Ecological Types

(sensu Holland 1986)

Major Ecological Types	Minor Ecological Types	Code? A means >50% of type occurrences are invaded; B means 20% to 50%; C means 5% to 20%; D means present but <5%; U means unknown (unable to estimate percentage of occurrences invaded)
Marine Systems	marine systems
Freshwater and Estuarine	lakes, ponds, reservoirs
Aquatic Systems	rivers, streams, canals
Aquatic Systems	estuaries
Dunes	coastal
	desert
	interior
Scrub and Chaparral	coastal bluff scrub
	coastal scrub
	Sonoran desert scrub
	Mojavean desert scrub (incl. Joshua tree woodland)
	Great Basin scrub
	chenopod scrub
	montane dwarf scrub
	Upper Sonoran subshrub scrub
	chaparral
Grasslands, Vernal Pools, Meadows, and other Herb Communities	coastal prairie
	valley and foothill grassland
	Great Basin grassland
	vernal pool	D, < 5%
	meadow and seep
	alkali playa
	pebble plain
Bog and Marsh	bog and fen
Bog and Marsh	marsh and swamp	D, < 5%
Riparian and Bottomland habitat	riparian forest	D, < 5%
	riparian woodland
	riparian scrub (incl.desert washes)
Woodland	cismontane woodland
	piñon and juniper woodland
	Sonoran thorn woodland
Forest	broadleaved upland forest	D, < 5%
	North Coast coniferous forest
	closed cone coniferous forest	D, < 5%
	lower montane coniferous forest
	upper montane coniferous forest
	subalpine coniferous forest
Alpine Habitats	alpine boulder and rock field
Alpine Habitats	alpine dwarf scrub
	Amplitude (breadth):	B
	Distribution (highest score):	D

Infested Jepson Regions

Click here for a map of Jepson regions

Cascade Range
Central West
Northwest
Sierra Nevada
Southwest
Modoc Plateau
Sierra Nevada East

California Invasive Plant Council

Protecting California’s environment and economy from invasive plants

Plant Assessment Form

More Tanacetum vulgare resources

Tanacetum vulgare

Evaluator(s)

List committee members

General Comments

Table 2. Criteria, Section, and Overall Scores

Table 3. Documentation

Worksheet A - Innate reproductive potential

Related traits:

Worksheet C - California Ecological Types

Infested Jepson Regions