|
How To
Rats vs Campbell Island Teal. . .And the Winner Is?
by Murray Williams, New Zealand Department of Conservation
Rats! Are any other mammals so adaptable and so widely distributed?
And, what about their ubiquity as human camp followers?
The coincidental spread of humans and rats across the islands of the
central Pacific during the past 2,000 years left in its wake an extinction
holocaust. Na?ve island faunas were plundered— animals weighing
more than 1 kilogram were taken by humans, those less than 150 grams,
by rats (Rattus exulans), now far removed from their native Indonesian
home. New Zealand, the last significant landmass to be settled, and its
plethora of small near- and off-shore islands suffered from this exploitation
as all other Pacific islands suffered. However, the recentness of the
R. exulans invasion (800 years ago) and the additional introductions
of other rats (R. norvegicus and R. rattus) by European mariners and
settlers 150 to 200 years ago have ensured that their impacts are particularly
well chronicled and understood. Today, restoration of New Zealand’s
indigenous ecosystems hinges on one crucial management action—eradication
of rats.
Twenty-five years ago, a conference of New Zealand’s conservation
specialists concluded that the eradication of rats from islands was “impossible.” But,
within 4 years of that conference, a flat 9-hectare island had been cleared
of the vermin by laying a network of poison baits on the ground. Within
8 years, the placing of new-generation anticoagulant baits in small tunnels
to ensure that other wildlife were not inadvertent casualties of the
Rattus war resulted in a heavily forested and rugged 170-hectare island
being pronounced “free of rats.” And within 15 years, helicopter
pilots dropped cereal baits laced with a more potent anticoagulant on
the 2,900-hectare Kapiti Island Nature Reserve near Wellington, the Nation’s
capital. It worked!
Today, almost 100 islands around New Zealand have had their rats removed.
No eradication effort, however, was more audacious than that which occurred
at Campbell Island, 600 kilometers south of the mainland, in the tempestuous
seas of the subantarctic. Five helicopter pilots snatched 5 flyable days
in the winter of 2001 to spread 125 tonnes of bait over the entire 11,000
hectares of this remote, wind-swept, cliff-edged home of gracious royal
albatrosses, lumbering sea elephants, and squabbling hordes of rockhopper
penguins. And when, in mid 2003, not a single sign of a lingering rat
could be found, arguably the world’s most ambitious, and certainly
then the largest, rat eradication operation was pronounced a total success.
It may have cost almost US$1 million, but it did the job.
Behind that success lay 25 years of experimentation by biologists from
New Zealand’s universities, research centers, and wildlife management
agencies. It relied on careful private-sector bait development and on
the unerring skill of commercial helicopter pilots more accustomed to
chasing deer in the mountains or spraying crops in fields. And, it was
crucially dependant on U.S.- developed technology: the global positioning
system.
As a consequence of that success, a 21-year-long dream for the world’s
rarest and geographically most restricted duck, the flightless Campbell
Island teal, will be realized. Confined by rats to the nearby, 23-hectare
Dent Island for over 150 years, and in numbers probably never more than
about 25 pairs, four of these 400- to 500-gram ducks were taken into
captivity in 1983. Another four were collected in 1990 to provide the
genesis of a captive population. Only one of three females laid eggs,
but from her, a total of 24 first and second generation offspring was
temporarily established on a small southern New Zealand island and another
40 retained in captivity. In September 2004, most will go back home.
With this first of three planned introductory cohorts, the ecological
restoration of Campbell Island, a part of New Zealand’s subantarctic
islands World Heritage Site, will take another giant leap forward with
the first return of one of its “lost” endemics.
For more information, contact Murray Williams, Scientist, Science and
Research Unit, New Zealand Department of Conservation, P.O. Box 10420,
Wellington, New Zealand, +64 4 471 3286, mwilliams@doc.govt.nz, www.doc.nz/index.html.
Soccer—A Kick for Conservation and Communities
Article and Photos by John Cancalosi
What do wildlife photography, soccer, and conservation have in common?
I shall attempt to make the connection clear.
It was wildlife photography that took me—a person who does this
sort of thing for a living—to a private game reserve in Zimbabwe
some years ago. It was a passion for soccer that found me playing the
game with staff working at the reserve.
The love of soccer created an instant bond among us. We played on the
scorched earth under the searing midday sun, using a well-worn ball “inflated” with
crumpled newspapers. Wondering how proper equipment might affect our
scrimmages, I purchased a new ball. Its delivery to a nearby village
was cause for celebration. The whole village—200 or so—turned
out to watch the ball’s inaugural soccer game, and a great time
was had by all. The cost of that ball was the best money I had ever spent.
Several years later, while in South Africa, it occurred to me that the
love of soccer might be used to create goodwill between nature parks
and the villages that surround them. With this in mind, I arranged
to meet Brad Poole of Ezemvelo KZN Wildlife (KZN), the provincial wildlife
authority in KwaZulu-Natal (Zulu Kingdom).
Brad shared my passions for soccer and for wildlife conservation, and
after some discussion, we formed a partnership to develop a pilot project—Get
the Ball Rolling—to donate books, soccer balls, and other sporting
equipment to villages in the Ukhahlamba-Drakensberg region.
I arranged for the donations, and Brad organized their distribution.
Contributions were generous. The English Football Association donated
several dozen balls and T-shirts, and British Airways, a mountain of
sportswear and other clothing. Biblionef South Africa contributed hundreds
of children’s books written in the Zulu language, and South African
Airways offered a significantly reduced cost for shipping the donations
to South Africa.
Many of the donations were delivered to the mayor of a region near Pietermaritzburg,
a man named Sipho Bhengu, with whom I developed a friendship. Mayor Bhengu
was curious about what I did for a living, so I asked if he would like
to accompany me to a blind I had set up to photograph endangered wattled
cranes. As we traveled to the crane site, we were followed by two armed
guards—the mayor also carried a weapon. As it became apparent the
situation was safe, the guards left, and I was afforded a rare opportunity
to spend a day birdwatching and photographing wildlife with Mayor Bhengu.
Our conversation dwelled on natural history and conservation.
Later, I visited a number of schools in the Pietermaritzburg area with
KZN’s Community Liaison Officer Dennis Mkhabela. I observed thousands
of children studying under conditions that would try the souls of lesser
humans. Their teachers were grateful to receive the educational materials
and sports equipment we brought to them. The bulk of the partnership’s
donations, however, were presented at a soccer tournament held in a stadium
sitting in the shadow of the Ukhahlamba-Drakensberg Mountains.
During the tournament, a match was played between a team of villagers
and a team of KZN employees. I don’t remember who won—it
didn’t matter. A win-win atmosphere had enveloped the local residents
and park workers. Following the game, the park staff and I were invited
to dinner at the local Zulu chief’s office. The KZN staff told
me that this was the first time they had ever received such an invitation
from the village. It was gratifying to think that I might have contributed
in some small way to fostering goodwill between them.
This experience leads me to urge those working for wildlife in rural
Africa, or elsewhere in the soccer-loving world, to consider the connections
that can be forged between communities and conservationists simply through
a shared passion for soccer, the “beautiful game.”
For more information, contact John Cancalosi, cancalosi@earthlink.net.
Visit www.kznwildlife.com to learn more about conservation in KwaZulu-Natal.
|