Predator & Weed Control

 

Pest control

Weed control

Reports

Windy Hill Sanctuary
Rat in trap

Suppression of Introduced Pests

Aotea has a diverse and unique range of native plants and animals. Historic milling, mining and farming, along with the introduction of introduced predators, has meant species have been lost and populations of native species continue to decline. 

Having evolved separately from the rest of the world for millions of years, our native animals did not learn to defend themselves against introduced predators. Across Aotearoa, these predators kill an estimated 25 million native birds each year. Some 4000 native species are threatened or at risk of extinction – one of the highest proportions in the world.

The Windy Hill Sanctuary has seen trapping and predator control programmes run for over 30 years. The reduction of pest numbers has seen the protection and recovery of some of Great Barrier’s most treasured flora and fauna.  Current monitoring and control programmes focus on rats as well as pigs, cats, wasps and weeds.

Control of Introduced Plants

Pest plants are becoming increasing abundant across the island and can dominate and overtake native species – growing vigorously and displacing or smothering our own precious native vegetation.

Our field teams learn to recognise these weeds and control and eradicate them wherever possible.

Current weed control activities include:

  • Monitoring honeysuckle on Rosalie Bay Farms.
  • Removing wilding pines in Rosalie Bay
  • Removing Plectranthus, Aristea and Mexican Devilweed.
  • Spraying/treating with pellets or removing Pampas
  • Removing Mexican Daisy when flowering.
  • Removing Agapanthus and Watsonia

Honeysuckle
Weeding Team

Related Reports

 

Total Catch Data

1999 -2021
Rats/Mice Cats Pigs* Goats Magpies* Wasps
1999 649 5 8 69
2000 735 16 113 14
2001 1665 19 3 61 7
2002 3581 30 4 58
2003 3222 32 1
2004 3947 32 Eradicated
2005 3105 27 5
2006 6950 22
2007 3359 8 3
2008 2777 11 32 1
2009 197 9 13
2010 524 10 8
2011 3144 10 5 6
2012 2859 33 8 4
2013 2649 21 7 13
2014 2525 18 7 37
2015 3127 12 6 2
2016 3795 20 6 15
2017 2543 12 14 2
2018 3012 18 12 12
2019 2476 12 22 41
2020 2239 13 19 10
2021 3095 19 36 21
2022 2208 25 55 6
64383 434 269 301 26 169

* where records kept

Rat tracking tunnels

This map indicates the locations of rat tracking tunnels, used to indicate whether and in what numbers, rats are present in a particular area.

 

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Auckland Council
Scott Macindoe Education Trust
Living Simply
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