COMHAIRLE CONTAE ÁTHA CLIATH THEAS
SOUTH DUBLIN COUNTY COUNCIL
MEETING OF CLONDALKIN AREA COMMITTEE
Wednesday, September 20, 2017
MOTION NO. 3
MOTION: Councillor B. Bonner
"There is concern about the problem of Japanese Knotweed in the Clondalkin area. Could a report be presented on the extent of this problem and on the plan to address it."
REPORT:
The surveying and mapping of Japanese Knotweed and other invasive species in the County recommenced on July 10th, the public realm section have assigned 2 experienced members of staff to this exercise on a full time basis at the present time. Surveying to date has focussed on the following areas -
- Main watercourses in the County including the Owendoher River, Whitechurch Stream, Dodder River, Camac River and the river Liffey.
- Public parks in the County including lakes and streams etc.
- Locations which have been reported, both public and private, where Japanese Knotweed and other invasive species are believed to be present.
Surveying and mapping is continuing and good progress has been made on this exercise over the summer months. Treatment has commenced on areas considered to be high priority and this treatment programme will continue through the months of September and October and as long as conditions permit. Information signs have been placed on order and are expected to be delivered into stock during the current week and these will be erected at locations where it is considered necessary.
The following is data extracted from the invasive species database broken down by species type, including Japanese Knotweed, showing numbers of sites found to date across the County as well as the breakdown for the Clondalkin area. Treatment information is being added to the database as work progresses however it cannot be made available as yet. Future reports on the matter will include treatment information.
|
Local Electoral Area |
Total Number of Sites |
|
Rathfarnham |
115 |
|
Templeogue - Terenure |
100 |
|
Clondalkin |
16 |
|
Lucan |
36 |
|
Tallaght - Central |
85 |
|
Tallaght - South |
15 |
|
Full County |
11-Sep |
||
|
Description: |
Number of sites |
Sum of site size (sq.metres) |
Max. site size (sq.metres) |
|
Total number of sites captured: |
366 |
34,597.96 |
9,588.02 |
|
Total number of Gunnera |
14 |
304.21 |
68.11 |
|
Total number of Himalayan Balsam |
32 |
4,057.29 |
803.00 |
|
Total number of Giant Hogweed |
5 |
9.73 |
4.94 |
|
Total number of Japanese Knotweed |
96 |
14,463.81 |
4,501.89 |
|
Total number of Buddleia |
240 |
14,039.68 |
3,405.26 |
|
Site Details: Adjacent to Private Property |
19 |
4,206.51 |
3,405.26 |
|
Site Details: Open Space |
100 |
4,800.19 |
2,591.72 |
|
Site Details: Other |
60 |
16,021.11 |
9,588.02 |
|
Site Details: River Bank |
131 |
7,004.15 |
803.00 |
|
Site Details: Roadside |
47 |
1,747.50 |
379.49 |
|
Site Details: No Details Entered |
9 |
818.50 |
517.90 |