Removing Himalyan balsam

Volunteers brought in to remove Himalayan Balsam

As part of the CAISIE project, volunteers from Conservation Services joined IFI staff and Carlow County Council in removing the highly invasive plant Himalayan Balsam (Impatiens glandulifera) from the banks of the Barrow Navigation near Carlow town.  CAISIE is a Life+ EU funded project which aims to control and eradicate invasive species in Lough Corrib and throughout the Grand Canal and Barrow Navigation.  Impatiens glandulifera is native to the Himalayas and thrives along river banks and in damp woodlands. It has spread prolifically in the UK since its introduction in the 19th Century.  Each plant produces large numbers of seeds and the seed capsules explode when mature, ensuring its rapid spread in suitable habitats.  Himalayan Balsam can attain a height of 2.5 meters and, when it invades the riverbank, it forms monocultures that shade  and out-compete  native plants.  These dense vegetation stands can also restrict access to the river for anglers and other user groups.

Efforts to control Himalayan Balsam at trial locations on the River Barrow were undertaken through hand pulling. This method has proved to be successful in parts of England and  works effectively because of the small root ball of this species (see photo).  Approximately 38,000 m2 of riparian zone was cleared of Himalayan Balsam at one site, where both open clearings and dense wooded river banks were treated.  At a second site approximately 625 m2 of ground occupied by Himalayan Balsom was cleared.

Hand pulling enables the selective clearance of this invasive species while native and ecologically valuable  riparian species are left undisturbed.  It also permits treatment in areas where access is difficult. A further survey of the areas will be undertaken in mid to late summer to assess the re-growth of Himalayan Balsam and/or the level of recolonisation by native plants.

For more information see www.caisie.ie

Previous Next
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
Launch of Invasive Species Disinfection Guidelines for Paddle Sports Enthusiasts Launch of Invasive Species Disinfection Guidelines for Paddle Sports...
Invasive Species Questionnaire When invasive species become established they cause significant damage to...
Invasive species workshop at IT Sligo With more than 10 aquatic invasive species detected in Irish waters in the...
Invasive Species Alert! Freshwater Jellyfish Freshwater jellyfish (also known as peach-blossom jellyfish) are newly...
C·I·B researchers make waves at European invasions conference The European Inland Fisheries and Aquaculture Advisory Commission (EIFAAC)...
IFI Invasive Species App Inland Fisheries Ireland's new smart phone app is now available to download...
Bio-security measures at World Cup Trout Fly Angling Championship on Lough Mask The World Cup Trout Fly Angling Championship took place on Lough Mask...
Japanese knotweed (Fallopia japonica) causing problems in the UK A recent article from Great Britain reported that Japanese knotweed...
Control of the highly invasive Water Primrose In October 2009, staff from Inland Fisheries Ireland confirmed the presence...
Follow up on Crassula trial in Natterjack toad pond at Castlegregory Golf Course In January 2012 staff from IFI, the National Parks and Wildlife Service...
Invasive Species Biosecurity Guidelines for Scuba Diving Aquatic Invasive Species (AIS) and fish parasites or diseases are readily...
Native Plants Recolonize Grand Canal Earlier this year IFI reported on the attempted eradication of New Zealand...
Success with ‘balsam bashes’ around the country As part of Fisheries Awareness Week IFI and Dublin City Council (DCC)...
Asian clam trials using Cockle harvester on River Barrow In April 2012 staff from IFI supervised trials using a cockle harvester to...
Invasive Weed Threatens Endangered Amphibian. Staff from IFI and the National Parks and Wildlife Service came together at...
Eradication Attempt on High Risk Invasive Species in the Grand Canal. In November 2011 staff from IFI and Waterways Ireland (WI) proceeded with an...
Be Plant Wise Poster Series Be Plant Wise Invasive aquatic plants can damage our ponds, waterways and...
Stop the spread of invasive species – Awareness evenings Stop the spread of invasive species – Awareness evenings March 13th,...
Fish virus spread by ornamental fish in the U.S.A. The critical importance of biosecurity was highlighted in the...
Trials with barriers to control Asian Clam Trials have begun to examine the effectiveness of barriers to control the...
Volunteers brought in to remove Himalayan Balsam As part of the CAISIE project, volunteers from Conservation Services joined...
INTERREG IVC visit of European partners to discuss the management of inland waterways Dr Joe Caffrey, Inland Fisheries Ireland, participated in a European...