Alternanthera philoxeroides Scorecard

Species:  Alternanthera philoxeroides

Common Name:  alligator weed

Scorecard created on
Last Updated on

Results

Impact Total:17 / 35Impact = ( Spread + Damage - Benefit )

Ability to Respond Total:15 / 25Ability to Respond = ( Ease of Response + Tools in Place )

Confidence:Medium

Confidence Notes:

Impact

SpreadNotesScore
Spread RateRapid spread in warm/cool climate wetland areas.4
Spread AmountPotential to be serious problem in freshwater or brackish wetland habitats in warmer areas in state.4
DamageNotesScore
EcologicalPotential to out compete native species. Rated high in the Cal-IPC Inventory.4
AgriculturalCan be a problem in wet pastures in warm climates.2
Infrastructure0
CulturalCould affect fishing.1
HealthProvides good mosquito habitat.2
BenefitNotesScore
Ecological0
Agricultural0
Infrastructure0
Cultural0
Health0
Total17

Ability to Respond

Ease of ResponseNotesScore
DetectionDifficult to detect until established.2
ControlEradication difficult once established. Vegetative fragments are dispersed by mechanical removal. Some biocontrol in place.1
Tools in PlaceNotesScore
EntryPotential to out compete native species. Rated high in the Cal-IPC Inventory.4
ControlNoxious weed.5
OutreachSome outreach in place.3
Total15

References

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