Camera trap photo from Flora and Fauna International; photo by Matt Linkie |
The Sumatran Tiger
Tiger range map from Sumatran Tiger Trust. |
Tigers used to be found on several Indonesian islands, but
since the extinction of the Bali tiger (1940s)
and the Javan tiger (1970s) the Sumatran tiger is the only one of the three
related subspecies remaining. Though the
range of the Sumatran tiger once included virtually the entire island, there
are only a few remaining habitats left, and all of those face a variety of
challenges that directly threaten the Sumatran tiger's continued
existence. The largest of these pockets
is Kerinci Seblat National Park (KSNP, Taman Nasional Kerinci Seblat, TNKS; at
1.38 million hectares or 5300 square miles the largest national park on Sumatra
and the second largest terrestrial protected area in all of Indonesia), where
I'm currently doing my doctoral dissertation research. These protected areas among the only
remaining large forested areas on Sumatra ,
though just a few decades ago the island was essentially covered with
forest. Large-scale agricultural
conversion, land clearing for settlement, and industrial plantations have
eliminated huge swaths of habitat. Since
Sumatran tigers are for the most part solitary animals a significant amount of
space is required to maintain viable populations. Though the numbers vary, estimates as to the
range of an individual tiger's territory are as high as 100 square
kilometers. Estimates also vary widely
as to the current number of tigers, ranging from the low 300s to around 1000,
but even on the high end the Sumatran tiger is in trouble. This variability is because it is so hard to
estimate the number of tigers in a given area.
Most "censuses" use camera traps to photograph tigers in a
representative area, and then attempt to extrapolate the findings to a wider
habitat area. However models derived
from these methods make assumptions and are not able to take into consideration
all the myriad variables that affect tiger distribution.
The Tiger Trade
Tiger skin photo from Sumatran Tiger Trust. |
Though habitat destruction is the main cause for the
dramatic decline in tiger numbers, tiger poaching is the main concern in Sumatra 's protected areas. The nature of poaching makes it difficult to
gauge the scale of the problem; since all aspects of the tiger trade are
illegal there are no records kept.
Poaching is difficult to detect, and only in a few protected areas
(including KSNP) have authorities been able to build capacity to detect
poachers and tackle the problem. It used
to be that many poached tigers were taken to fill "orders" placed by
civil servants, most commonly policemen or members of the military or to be
used as gifts to or by politicians.
Folks desirous of promotions would use the tiger skins as gifts for
superiors as a way to "grease the wheels". A friend of mine doing police-related
research on Java once commented to me that (s)he was amazed at how often tiger
skins were to be found in the homes of high-ranking officials. It's been estimated that several decades ago,
80% of poached skins were for the domestic market and 20% were exported. Now, though, demand has shifted, and a source
close to the issue told me that it's likely that 80% of skins are
exported. Now the biggest destination
for skins and bone is said to be Vietnam , but this is difficult to
prove. Tiger skins move through a
network of brokers sometimes changing hands 5-6 times before they arrive at
their final destination. Investigators
are sometimes able to estimate the number of middlemen from the final price, as
each step entails a 10-20% "cut" for the broker. Those that have poached tigers previously
likely have established contacts and know the rules of the game, but
"novice" poachers can expect to make a lot less. Likewise, those without a direct line to
bone/skin "bosses" have to go through brokers, but they often have
unrealistically high expectations of the prices they can get. A friend that works in tiger protection told
me that end-market values for skin and bones that appear in media reports (for
instance, a newspaper story that reports the final price for a tiger skin at,
say, US$15,000) leads some would-be poachers to believe they can get close to
that for a tiger, but the reality is that the price gets inflated along the
extended chain of buying and selling.
This dynamic perhaps contributes to poaching. Although it is hard to say with any certainty
how much a poached tiger skin will bring (this depends on a lot of things; sex,
size, age, condition and the experience and knowledge of the market on the part
of the buyer), a villager may hope to net around US$1,000 for a skin plus
$300-350 more for the bones. This is, of
course negotiable, as some village poachers may be dependent on the middlemen
to find a buyer.
Boar snares (6). I lifted this photo without permission from a flickr page associated with this site. |
It's not just tiger skins that are valuable, though. Their bones and certain body parts are
believed by some to have medicinal or magic powers. At the export level bones and skins may be
marketed through a different network, though, and it is thought that nearly
100% are exported (2). Again it is
difficult to get precise information on the tiger trade since bones, skins, and
other parts are covered under the Convention on International Trade in Endangered
Species of Wild Flora and Fauna (CITES) and so the trade is entirely illegal
and undercover, but it is suspected that some if not most of the trading is
coordinated by cartels based in Southeast Asia.
Snared tiger photo from here. When tigers get their paws caught in snares the paw often must be amputated. If the operation isn't done quickly enough there is a high risk of infection which can lead to the death of the tiger. Sometimes post-operation tigers can be reintroduced into the wild, sometimes not. |
Although poaching is a problem at KSNP, conservationists
have had a higher level of success when compared to other protected areas and
there is some basis for hope here. When
directed tiger enforcement began here, the park's administrators were not aware
of the scale of the problem, and so tiger conservation was not a priority. It was soon determined that tiger poaching
was indeed a prime concern, but since regular and routine patrols have begun
year by uear the percentage of patrols recording active snare poaching has
continued to decrease. Still in that
time that I've been working here (around 9 months) there have been more than 8
documented cases of tigers being killed or snared (3). Though some tigers are killed by villagers as
the result of tiger attacks (4), it is known that several have been poached
over the past year. Specialist forest
police patrolling the park still on occasion encounter tiger snares, which
indicates that poaching is for the most part done with intent rather than by
opportunistic villagers. Again,
estimates vary widely regarding the number of tigers in the park; the local
paper just last week printed a story indicating 166 tigers remain, but other
experts suggest there could be twice that many.
But if you consider that possibly 5% of the extant population has been
lost over the past year alone (this is probably a low-end estimate given that
there are likely tigers poached/killed without being discovered/reported), it
is clear that the Sumatran tiger is facing a hard struggle for survival.
As I've mentioned in the past, it's my responsibility as a
researcher to maintain neutrality on pretty much all the issues I'm
investigating. I understand the concerns
of conservationists, many from "developed" countries who lament the
loss of creatures like the Sumatran tiger.
However, I also hear stories from villagers who see, with reason,
wildlife as a threat to their way of life.
Their encounters with wildlife like tigers and elephants are generally
confrontational in nature (5). I find it
impossible to maintain neutrality when discussing poaching, though. There is no way it can be justified. I also get a little sad when I imagine myself
telling my children "we used to have these things called tigers...."
Notes
(1) Who is being charged as the actual poacher
(2) There are a couple of minor exceptions to this. Certain body parts, like whiskers, are for
the domestic market.
(3) This figure does
not include incidence happening just outside the park in protection forests
(hutan lindung)
(4) Most of these
attacks occur in places where humans have encroached in tiger habitat or where
there has been very heavy poaching of tiger prey species. In/around KSNP there have been only 3
documented attacks on people since 2008.
In one case that I am aware of, an illegal logger was attacked by a
tiger deep within the national park. In
another recent case a villager claimed that a tiger attacked him but the
investigation showed that this was not the case.
(5) Again, the fact
is that most conflict is due to habitat destruction.
(6) The snares in the photo are actually neck snares, but tigers sometimes get caught in them. Poachers prefer foot hold snares because neck snares can damage the skin.
(6) The snares in the photo are actually neck snares, but tigers sometimes get caught in them. Poachers prefer foot hold snares because neck snares can damage the skin.
Acknowledgements
Many thanks to my friends that work hard in the field and put themselves in danger to protect tigers, mitigate human/wildlife conflicts, and increase awareness.