Eurasian water-milfoil
Myriophyllum spicatum
Biosecurity Queensland must be contacted within 24 hours of sighting, call: 13 25 23.
family
Haloragaceae
origin
Exotic
declaration
Category 1 Restricted Matter (Biosecurity Act 2014)
Category 1 – must be reported to a Queensland Government inspector within 24 hours
Common names
Spike water-milfoil.
Eurasian water milfoil is a submerged perennial plant. Stems are rooted at the base and grow towards the surface. It can grow in water from 0.5 to 10 m deep, but most commonly at depths up to 3 m deep and has feather like foliage., Eurasian water milfoil is a prohibited invasive plant under the Biosecurity Act 2014.
Impact
Impact
Myriophyllum spicatum grows into dense infestations which shades out and replaces other aquatic plants and is of less value as a food resource than the native plants it replaces. At high densities, it supports fewer aquatic insects which serve as a food resource for fish. Large predatory fish lose foraging space and are less efficient at obtaining prey. Another impact is a reduction in oxygen levels within the water due to the decay of the large mats of the plant. The dense mats impede water movement and interfere with recreational activities such as swimming, boating, fishing and water skiing
Location
Location
Characteristics
Characteristics
Similar Species
Similar Species
Myriophyllum spicatum grows into dense infestations which shades out and replaces other aquatic plants and is of less value as a food resource than the native plants it replaces. At high densities, it supports fewer aquatic insects which serve as a food resource for fish. Large predatory fish lose foraging space and are less efficient at obtaining prey. Another impact is a reduction in oxygen levels within the water due to the decay of the large mats of the plant. The dense mats impede water movement and interfere with recreational activities such as swimming, boating, fishing and water skiing
