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The NZWT is curently undertaking two main areas of research, both
looking at particular species of
mammals introduced to New Zealand in the early 1900's. The importance
of independant study is vital
to ensure an unbiased and realistic aproach to the management of
such introduced species, learning
about their behavior, integration with New Zealand's ecosystem within
the last century, their impact on
the environment and the conservation of New Zealand's flora and
fauna.
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The
Fiordland Moose Study
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The Fiordland moose project is divided into three main tasks.
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Investigation
of Moose Ecology & Status
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To
Document Moose History in New Zealand
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Investigation
of Moose Ecology & Status
To
learn how moose live in Fiordland - seasonal movements, food
and habitat preferences.
Eventually to have sufficient data to estimate numbers, population
trends and the limits of moose range.
Methods:
Initially concentrating our research in a single "study
area" (Herrick Creek, Wet Jacket Arm) then expanding the
boundaries using acquired knowledge: by field recognition and
interpreting moose "sign" (eg., browsing evidence),
by DNA analysis of material (eg., hair, pellets), by volunteer
surveys and any other means at our disposal.
Results:
Intensive efforts from 1992 to the present time, representing
some 600 person-days in the field by Ken and Marg Tustin over
all seasons have given a good idea of seasonally preferred food
and a modest account of moose movements.
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| DNA
confirmation that moose are indeed still alive and well
in 2000. Jamie Ward of Genomz, AgResearch, with the moose
hair sample from Dusky Sound. |
Moose
remain extremely rare and 30-day searches frequently reveal
no recent traces.
With such rarity seasonal patterns of movement have been difficult
to assess. Estimates of numbers must await definition of the
boundaries of moose range as historic records show that moose
at times have been well outside the present likely "core"
area of Dusky Sound -Wet Jacket Arm.
Even Herrick Creek, with no shortage of good habitat and forage,
has only occasional moose presence and then only for short periods.
DNA analysis has the best potential to help ensure field sign
identification is accurate and eventually to individually identify
particular moose.
NZWT is working with experts to achieve this worthwhile objective.
To
Document Moose History in New Zealand
There
has always been a "culture of secrecy" about moose
in Fiordland and few published records exist. However, contacts
with moose by fisherman, hunters, surveyors, pilots and
others over the years represent a wealth of unwritten history
that deserves recording.
Objectives:
To
collect unpublished accounts from people who have encountered
moose and build an authoritative historic record.
Methods:
Personal interviews and family recollections.
Objectives:
To continue efforts to photograph Fiordland moose with the purpose
of capturing public attention and awareness and using the interest
so gained a tool to drive NZWRT's educational and other messages
about wilderness, wildlife and adventure.
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Video
frame taken-Herrick Creek in July 1995
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Methods:
Self-triggering
video and still cameras.
Results:
Results:
From 1994 to the present time about 5000 camera-days have yielded
about 2000 records of red deer and one probable female moose.
The shot pictured was taken in July 1995. It is a single frame
enlargement from a video clip taken by a camera on "time-lapse"
mode, hence sharpness and clarity is compromised. The same event
recorded a few seconds of the animal moving, visible rearward
from the shoulder. The gait, size, shape, colour and stance
are unlike that of a red deer, but typically moose-like.
There are only two possibilities of the identity of this animal:
moose or red deer.
What do you think? The challenge to better this photo
remains!
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It
seems from historic records and modern "spot checks" that
the Dusky Sound-Wet Jacket Arm area is the likely "core area"
of moose presence. However, moose swimming ability and the present
abundance of foodstuffs in the forest make this presumption by no
means certain.
The map below pictures credible records of moose seen or shot since
1950, moose remains (skeleton, cast antlers) found over the same period,
and field sign (moose-typical browse records) identified by Ken &
Marg Tustin 1992-2002. These will be up-dated regularly as records
come in.
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| Map
Key |
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Moose
seen/shot after 1950 |
} |
Representing
Credible, mainly first hand records.
Rapid drop off of records suggests the moose population plumeted
to near extinction around 1975-1985 due to progressive food
shortages. |
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Moose
skeleton/cast antler found after 1950. |
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Apparent
moose field sign 1992-2002 identified Ken & Marg Tustin |
| NB1:
Most of the records date 1950-1970 - the
rapid progressive drop-off after that despite increasing human
presence suggests already small moose population plummeted
to near extinction around 1975-1980. |
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