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Tony Druce and Ian Atkinson first discovered the 0.6 hectare Te
Marua Bush remnant in the late 1950s during a Hutt Catchment
survey. Ian describes the area as very special, largely
because it is one of the few remaining stands of lowland matai,
totara and maire left in the western Wellington region. He
estimates that some of the matai in the stand are 200-300 years old
and says he was very surprised to find it surviving, despite being
grazed by stock, on the edge of State Highway 2.
At the Wellington Botanical Society 50th Jubilee in 1989, Ian
chose Te Marua Bush as the subject of his address. As a
result, in 1990 the Botanical Society approached Greater
Wellington, the owners of Te Marua bush, with a view to forming a
partnership to ensure the survival of this special slice of natural
heritage. Greater Wellington responded positively to the
approach.
Work to protect the area began in February 1991. The major
management challenge faced was weed control. Large sycamore
trees were a big problem inside the bush, requiring continued
cutting and poisoning or removal over the years.
Saplings still appear today, requiring ongoing vigilance.
Barbara Mitcalfe, an active Botanical Society member, recalls with
a grimace the thigh-high
Tradescantia (wandering willy) carpeting the forest
floor. Both Ian and Barbara say that in the early days they
used to feel quite depressed at times about the size of the
task.
The Botanical Society has two working bees a year at the
site. In the early days of the project, they rolled up
endless mats of the groundcover weed
Tradescantia into giant rolls "like Bremworth
carpet", which were removed from the site by Greater
Wellington staff. "It became clear that we weren't
winning the battle," says Barbara, so we approached Greater
Wellington for help. They funded a contractor to spray the
Tradescantia, with great success, and we can now control
it ourselves.' Barbara describes how these days group
members walk shoulder to shoulder from one side of the block to the
other, collecting every tiny piece of
Tradescantia they can find.
Fencing the site was another important step, undertaken by the
Conservation Corps in 1998. Even through the area was no
longer grazed, Barbara says the fence was important to create a
physical boundary defining the area being managed.
Te Marua Bush had also been hit hard by posssums in the
past. However, over the past 6 years the Regional Council has
been controlling possums with bait stations, making the area a
"much safter refuge for important native plants and
animals." Barbara points out a threatened native
mistletoe (
Ileostylus micranthus) that was introduced to the bush
from a nearby reserve and is now thriving.
Some planting has been done on the site by the local Forest and
Bird branch and the Wellington Botanical Society, using plants
grown from seeds from the Bush, with the Regional Council funding
their potting soil. The planting has been around the edges in
places to provide shelter and wind protection, and to fill a light
gap in the canopy that resulted from weed control. Over time,
Barbara and Ian have seen the natural re-introduction of tawa
seedlings in the bush, probably as a result of bird seed dispersal
and the removal of
Tradescantia allowing seeds to germinate and grow.
Ian guesses that these tiny tawa seedlings will replace the mature
canopy podocarps on the site in hundreds of years to come, if they
don't succumb to droughts.
Other challenges faced by the group include the dumping of
rubbish. One of the intial jobs was to remove a legacy of
dumping, including things like old TVs. Greater Wellington
Regional Council has erected signs reminding people that dumping is
illegal. The group recently faced the threat of road widening
on the adjacent State Highway and lobbied hard to make sure the
bush was impacted as little as possible.
The group is adamant that the continued survival of this special
remnant depends on conservation management. Ian says,
"We've got to go on making an input to the area, because
nature doesn't care if we don't and the weeds will quickly
take hold again in such a small fragment." Ian and
Barbara both emphasise the need to speak up when help is needed to
protect areas such as Te Marua bush. Agency funding is often
available but you need to keep records and provide well-documented
information to support your requests for help.
The group have now reached the point where they've dealt
with the harder management jobs and the Wellington Botanical
Society has drafted a set of principles to guide their future
actions for the site. They'll be looking at things like
what sort of species should be planted on the site to maintain its
ecological integrity, and how much replanting is necessary.
Barbara says a management plan is a useful tool and can be as
simple as one page outlining the main priorities for the area, to
help guide working bees.
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