Play to see identifying features of invasive Lagarosiphon major and comparisons with two...
Rapid invasion of Lough Corrib Currently, in Ireland, we are at an early stage in the...
Rinerroon Bay as viewed from a boat (left) pre-Lagarosiphon major infestation (right) in 2005...
Management and control An expert group, with international experience in aquatic weed...
(a) Canopy-forming growth in winter (b) collapsed condition in summer Life cycle...
Mechanical cutting and harvesting (a) OSMA Weed cutting boat (b) v-blades (trailing knives)...
Light Exclusion using Biodegradable Geotextile Jute matting or hessian has been recently employed...
Video identification of Curly leaved WaterweedWednesday, 17 August 2011 15:10
Rapid invasion of Lough CorribWednesday, 17 August 2011 15:12
Adverse ImpactsWednesday, 17 August 2011 15:19
Management and controlThursday, 18 August 2011 09:49
Life cycle studiesTuesday, 23 August 2011 13:24
Mechanical cutting and harvestingTuesday, 23 August 2011 13:38
Light Exclusion using Biodegradable GeotextileTuesday, 23 August 2011 14:25
Curly leaved waterweed
Lagarosiphon major is an aggressive, non-native, invasive plant species that originated in southern Africa, where it is regarded as a nuisance weed. The plant can grow in water up to 6m deep.
In addition to occupying the full water column, plant stands produce dense canopy vegetation on the water surface. The leaves are strongly recurved and are borne in a spiral arangement. The long stem is brittle and easily broken (aiding dispersal). Only female plants are present and all reproduction is by fragmentation or vegetative reproduction. Detached stems, when they sink, root from the nodes and establish new populations.