Dreissena polymorpha Scorecard

Species:  Dreissena polymorpha

Common Name:  Zebra mussels

Scorecard created on
Last Updated on

Results

Impact Total:23 / 35Impact = ( Spread + Damage - Benefit )

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

Confidence:High

Confidence Notes:

Impact

SpreadNotesScore
Spread Rate5
Spread Amount3
DamageNotesScore
EcologicalKnown to severely impact food chain, natural species of mussels, algae and benthic plants.5
AgriculturalSome aquaculture impacts and restrictions; impact on field irrigation canals.1
Infrastructure5
CulturalImpacts on water and boating recreation; impacts on submerged archeological sites.3
HealthIndirect impacts through potential for toxic algae blooms.1
BenefitNotesScore
Ecological0
Agricultural0
Infrastructure0
Cultural0
Health0
Total23

Ability to Respond

Ease of ResponseNotesScore
DetectionAdult detection relatively easy, larval detection moderate to difficult for proper identification.3
ControlBoat inspections costly and not entirely effective; once established, very difficult to control.1
Tools in PlaceNotesScore
EntryInspections and boating restrictions in place, yet not entirely effective.3
ControlFish and Game Codes 2301 and 2302 in place5
OutreachFish and Game outreach, 100th Meridian, individual lake owners/operators, boating/fishing clubs; Avoid Hitch Hikers.3
Total15

References

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