Environment Canterbury(external link) is contracted to deliver biosecurity services on the Chatham Islands. Pest management is carried out in accordance with the Biosecurity Act 1993(external link) and national and regional pest management strategies.
Pests are most likely to arrive in vehicles, small boats, timber and machinery, especially agricultural and construction equipment — and with imported livestock, plants and general freight. Even commercial foods, fertilisers, grains and potting mix can contain pests.
We have prepared several fact sheets relating to pest management on the Chatham Islands, i.e. what to do if you are importing animals, plants or vehicles to the islands. You’ll find these factsheets at the end of this page.
Chatham Islands Pest Management Strategy
The two main goals of the Chatham Islands Pest Management Strategy [PDF, 10 MB] are:
- Surveillance and control of pests already on the Chatham Islands
- Border control to prevent news pest incursions
The Strategy was due for review in 2018, and the process is currently underway. You can view the relevant review documents below:
- Proposal for the Chatham Islands Pest Management Plan (December 2020) [PDF, 2.7 MB]
- Chatham Islands Pest Management Plan Section 70 and 71 Assessment Report [PDF, 350 KB]
- Chatham Islands Pest Management Plan Cost Benefit Analysis Report [PDF, 2.1 MB]
- Overview of Consultation on the Proposed Chatham Islands Pest Management Plan and Chatham Islands Biosecurity Strategy [PDF, 697 KB]
Council adopted the recommendations in the following three documents at a Council Meeting on Thursday 1 April 2021. The decision was publicly notified on Tuesday 6 April 2021 [PDF, 50 KB].
- Chatham Islands Council Biosecurity Strategy [PDF, 3.2 MB]
- Chatham Islands Pest Management Plan [PDF, 4.3 MB]
- Chatham Islands Pest Management Plan Decisions Report [PDF, 967 KB]
Chatham Islands Biosecurity: A Snapshot 2011–2017
We co-produced Chatham Islands Biosecurity: A Snapshot 2011-2017 [PDF, 6.9 MB] with Environment Canterbury to raise awareness of the key pests that threaten our islands’ unique natural values.
The book provides a good summary of biosecurity activities on the islands over the last seven years and details our extensive joint work programme with Environment Canterbury.
It is a valuable resource for landowners, farmers and fishermen, enabling them to identify pest plants and animals and improve practices to help stop the spread of pests and protect our unique environment.
Chatham Islands Biosecurity: A Snapshot 2011–2017 will go a long way in informing the next version of the Chatham Islands Pest Management Strategy.
‘No Pests Please’
No Pests Please is a border control programme for the Chatham Islands, developed in conjunction with SPS Biosecurity(external link).
It was developed in recognition of the fact that a variety of pests have already arrived on the Chatham Islands and caused significant damage, both to the islands’ ecology and economy.
It is essential that pests currently on the Chatham Islands such as possums, rats and hedgehog don’t spread to Pitt Island and other outer islands.
The impact on agriculture, the marine industry and the environment would be disastrous.
If you have seen a pest and are unsure what to do please contact us.
What you can do
Everyone travelling to or from the Chatham Islands is responsible for ensuring they do not bring pests with them.
- thoroughly clean vehicles, camping gear, freight containers and machinery before arriving in the Chathams
- make sure luggage and camping gear, etc. is free of stowaway pests; even boots, socks and clothing can carry unwanted seeds
- do not bring plants onto the island without checking with the Chatham Islands Council whether they are pests
- check supplies and equipment for signs of pests before travelling to the Chatham Islands
- if you suspect that pests are being moved about or have established themselves, contact us
- if possible, destroy or contain the pests immediately and then contact us
- if you are moving within the Chatham Islands or travelling out of an area with a known pest problem, make sure vehicles, equipment and other material are clean.
Chilean Needle Grass
Chilean Needle Grass (CNG) is an invasive pest weed that poses a major threat to primary production and the biodiversity of dry grasslands.
Once established, CNG is very difficult to eliminate. It is avoided by stock and develops a lasting seed bank. The seeds are a sharp, corkscrew shape, which catch on animal hides, clothing and machinery.
CNG seeds can hitchhike on agricultural equipment, machinery, stock, feed, motorbikes and vehicles including recreational 4WDs. Vehicles and machinery are often sourced from the Hawke's Bay which is an area with quite a large distribution of CNG. Therefore, we all need to be vigilant as we don’t want to see this pest become established on the Chatham Islands. Try to minimise the movement of stock to reduce the likelihood of contamination and spread of any seeds.
Please keep an eye out for CNG on your property, around stock/sale yards or on roadsides.
If you suspect that you have found it, please do not try to pull it out. Instead, take a photo and send it to Kerri.Moir@ecan.govt.nz with details of the location or call 03 305 0013 for assistance. If you think you have seen it, report it!
For more information about CNG, including tips on how to identify this grass, please visit the Facebook page, Chilean Needle Grass – stopping its spread in NZ(external link).
Also, see Environment Canterbury’s FAQs on Farm biosecurity and machinery hygiene [PDF, 299 KB], and Chilean needle grass [PDF, 298 KB].
Marine pests are most likely to arrive on boat hulls, in ballast water or in water intake systems such as sea chests.
They can also arrive as a result of fishing and harvesting activities or with marine equipment.
Marine pests include:
- Asian clam and Asian date mussel
- Chinese mitten and European shore crabs
- Mediterranean fan worm
- North Pacific sea star
- caulerpa (a green seaweed)
- undaria/Wakame (a Japanese seaweed).
For more information on what you can do to help prevent the spread, go to our Marine Pests page.
Moving to the Chathams
Download PDF (375 KB)
Bringing Pets to the Chathams
Download PDF (612 KB)
Buying Used Vehicles or Machinery
Download PDF (1.3 MB)
Download PDF (419 KB)
Importing Farm Animals
Download PDF (459 KB)
Importing Bulk Building and Gardening Supplies
Download PDF (516 KB)
Download PDF (446 KB)
Download PDF (63 KB)