Motupipi Sandspit Project

Objectives

The Motupipi Spit is a prime example of “Dune Landscape”. Sand dunes are arguably one of the most threatened environments. Most dunes have been domesticated by urbanisation, so the Motupipi Spit deserves the best care. It is an important nesting site for the Banded Dotterel and other coastal birds. Between 2003 and 2011, TDC and DoC worked with Community Groups and corporate sponsorship to carry out many planting projects to restore this Dune Landscape. The restoration of Indigenous Foredune plants and removal of exotic species here was the largest proved example in Golden Bay and was been presented at National Dune Conferences.  Data has been gathered to use as part of restoration trials. Thousands of foredune, rear dune and coastal forest species were planted. All of which have done well, except the ones that were burnt in a probable firework fire through the middle of the dune in 2011 but even some of those recovered and were followed up by replanting.

Sadly, almost all the work stopped in 2011 when the Corporate sponsors moved their attention to the bigger project of Farewell Spit. The TDC funding of “CoastCare” has also dried up for the Spit.

The Motupipi Spit is gradually being infested by exotic trees and pest plants that are part of our pest species list we wish to control.  The infestation level is controllable, but reaching the stage of rapid increase soon. See our assessment report. The majority of the spit, central and eastern end is Unallocated Crown Land (UCL) and any management was up to the financial priority lists of government (DoC). The small area at the eastern end is part of the Golf Course block and administered by TDC. This area has a bigger range of pest plants and is regenerating steadily, so help to encourage wanted species is crucial.

Both agencies are already fully stretched.

Project De-Vine Environmental Trust and DOC staff (see letter) can see that a clean-up of the pest trees and plants will invigorate the native plants to continue establishing themselves.

DoC is keen to support in kind and is checking out if they can supply a spray vehicle to get into the middle of the Spit area, where there is an overgrown track. The DOC opinion is that further planting is quite likely to be unnecessary as the Muehlenbeckia australis and complexa will expand their existing cover of the shrubs and grasses, creating a great habitat for Skinks and others. The immediate neighbours are the Takaka Golf Club, who lease the land from TDC. They are supportive and we have asked them to remove the one sycamore that they have only 200m from the start of the Spit area.

We are asking for funding to control the exotic trees (Wilding pines, Sycamores and others) and pest plants – Pampas grass and in particular Yellow jasmine, which is a very invasive plant only found in Golden Bay, apart from a few reported small sites in NZ, since it was introduced about 70 to 90 years ago by a well-meaning collector of exotic plants.

The initial control work will then be followed up by reducing amounts of work over several years to achieve a sustainable Dune landscape. No longer will it be a source of pest seeds, but a habitat for skinks and birds and a source of native tree seeds to enhance all the other work happening in the Motupipi River

The assessment:

Date of Assessment    14/8/18

Assessor Name          Mark Brignole

Landowner(s)  TDC and UCL land    

Motupipi Sandspit, Attached to the Pohara Golf Course. (access through course)

Assessment:

The Motupipi Sand Spit is 14 hectares of UCL and Council owned land at the mouth of the Motupipi River estuary. There has been quite a bit of effort put into cleaning up and replanting the area but it is a very large site and access is limited. It’s only access is through the golf course and down the beach. DoC vehicles are the best choice for vehicle access of the area. The major weeds are Wilding tree species (mostly Pinus radiata and Sycamore). Italian Jasmine has established a major foothold and is present in most places on the Spit. Purple and White Pampas is visible mostly on the inner side of the peninsula (it would be relatively easy to eradicate).

Special Notes

Other weeds present:

•  Blackberry have been actively controlled already
•  Marram Grass has been controlled in the past as well

Figures 1 and 2 Aerial views of Motupipi Spit – see colour codes in the section above

Motupipi Spit Muehlenbeckia complexa spreading well 2018