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December 2002

Feature

 


Humans vs the Baboons - Round X

Geraldine Bennett

A young baboonMuch has been written in recent months about baboon and human interactions in suburban and urban areas with the focus mainly on the baboons of the Cape Peninsula.

The Cape Peninsula does indeed provide interesting reading material on these interactions, yet it is not the only area in the Western Cape that is home to baboon troops.

The Overstrand area, which covers residential areas like Rooiels, Pringle Bay, Betty's Bay and on to Hermanus, is also home to many baboon troops. The difference, though, between the baboons of the Cape Peninsula and those of the Overstrand is that the former troops are geographically, and thus genetically isolated, whereas the Overstrand area provides an open mountain-chain system which extends some 1 000 km's north to the Richtersveld and around 500 km's east to Knysna and Tsitsikamma.

Baboons climbing drainpipes at a residenceChacma baboons, "Papio ursinus" in the Overstrand area, or more specifically the Kogelberg Biosphere, number between twenty-five to thirty-five in their troops, and whilst the area has an official international biosphere status, many residents feel the baboons to be a nuisance.

This continues to cause a great deal of conflict with man remaining relatively uncompromising towards the co-existence.

Whereas the Cape Peninsula Nature Conservation Authorities have adopted a "full responsibility" programme for the management of the baboons in that area, the Overstrand Municipal Nature Conservation Department, together with the Western Cape Nature Conservation Board has developed its own programme in conjunction with the United Nations Educational, Scientific and Cultural Organisation (UNESCO) under its Man and Biosphere Programme.

Although the two areas, Cape Peninsula and Overstrand, are divided by just 32 km's as the crow flies, and separated by the volatile False Bay sea, they could be worlds apart in their approach to baboon management.

According to Craig Spencer, Nature Conservation Officer for the Overstrand Municipality, and a member of the Baboon Management Task Team, "…the policy of the Cape Peninsula is flawed and unsustainable." Although he does concede that the circumstances across False Bay are different to those of the Overstrand area.

Spencer believes that both man and the authorities have to take dual responsibility for the management of the baboons.

In the Cape Peninsula area the authorities are taking full responsibility through their programme of "baboon-minders".

"This removes active participation from the residents, has long-term financial implications and is unsustainable," says Spencer.

The baboon-minders have to be paid and this is on an ongoing basis. Furthermore, removing the baboons from an area creates apathy eventually, and says Spencer, "…the baboon monitors can't be everywhere at once. All it takes is for the baboons to change their eating ritual, something for which the residents will be unprepared. The consequences of which are self-explanatory."

Conversely, the working document drawn up and titled "The Management of Problem Wild Animals in the Overstrand Municipal Area" in conjunction with UNESCO, places joint responsibility on the authorities and the residents. Spencer explains that it is difficult to manage an open system and cites as examples man attempting to manage whales or galjoen.

According to the document the key activities required to be achieved are:
· Ensuring maximum co-operation of the public.
· Improving the management of household refuse.
· Establishing a committee to measure the effectiveness of the plan and the administration of its budget, and
· A Research component.

In terms of the above, the Municipality has committed itself to removing the local dumpsite which is in close proximity to the residential areas of Pringle - and Betty's Bay, within the first half of 2003.

Spencer says, that although it is a relatively common sight to see both baboons and humans foraging harmoniously at this dumpsite, the baboons only spend one fifth of their foraging time at the dump. The baboons continue their "easy" foraging in the dustbins of local residents homes, and as can be expected from avid "window shoppers", if doors or windows are left open and unguarded and there is fruit or food on display, the baboons will enter the homes.

To this end the Municipality is looking at promoting the use of baboon-proof bins for the residents, with thought being given to the implementation of incentive schemes, or pay-off schemes through municipal billing.

As to the "window shopping" activities of our distant cousins, this is where residents need to take responsibility, through awareness campaigns, and baboon-proof their homes as well as keep food out of sight. The Municipality emphasizes that the coastal areas of the Overstrand form the buffer zone of the Kogelberg Biosphere and as such "…the residents should be aware that they are living in close proximity to a natural environment and must accept responsibility for taking necessary precautions to ensure that they minimise potential conflicts".

The document also draws on the services of security company's and the SAP where initial complaints may be logged of a baboon "hit". This will require a visit by a member of the Baboon Action Committee (BAC) to the "hit" site where a report will be completed which will investigate the causes, and offer possible solutions. This data will be captured and form part of the research for later evaluation.

Baboon feedingSpencer says though, that a "hit" site is not visited immediately as it has been his experience that, "…the complainants are extremely emotional at the time and their reactions are aggressive often to the extreme."

These reactions include shooting the troop, the poisoning of the primates, or the painting or maiming of the members of the troop.

According to Dr Jenny Stark, a founding member of the Biosphere Education and Awareness Programme (BEAP) in Rooiels, "[Baboons] unlike humans, seem to bear us no grudges", and this despite some extremely unsavoury incidents where baboons have been maimed, shot with pellet-guns and/or poisoned. It goes without saying then that to attempt to "punish" a baboon, or "teach it a lesson" is a futile exercise.

In a document produced by Stark and titled "Trouble in Paradise" the following incidents were highlighted:

8 October 2001: young male baboon found dead on roof of a house. Post mortem - 'acute heart failure induced by suspected poisoning'.
18 October 2001: 3 dogs savage a baboon. Owner claims they had been 'regularly teased by the baboons'. By the time Craig Spencer arrived on the scene, the baboon was dead. When he tried to remove it, a large male standing guard a short distance away, sounded a number of harsh barks and made a mock charge.
19 January 2002: the same dogs isolate 2 baboons on the roof of a house. Neighbours call the conservation officer on duty, who is attacked by one of the dogs while investigating the complaint. The dog is shot, the 2 baboons escape.
28 January 2002: the body of a large male baboon placed in our (Dr Jenny Stark's) garden under cover of darkness.

In the incident of 28/1/2002 it was with relief that it was discovered that the baboon placed in Starks garden was not the Alpha male, as a few weeks later when the troop returned, the infants were still alive.

Had this particular victim been the dominant male then in all probability the infants would all have been killed by a new Alpha male in a phenomena known as "infanticide". In this case the new dominant male would seek to remove all of the gene pool from the previous Alpha male.

The baboons of the Overstrand are extremely necessary in an area that has more than sufficient ecological carrying capacity. They are considered a very important component of the environment on the coastal plain. It has been noted that there is a direct correlation between their movements and the availability of natural fruit. The area, which is dominated by the fynbos species, doesn't produce fruit generally with the parent plant retaining its seed and only dispersing this seed should a limb die by being broken off, or through fire.

Before the inhabitation of the area by man, Eland, Red Hartebees and Black Rhino (to name just a few) abounded in the area and their trampling actions would disperse fynbos seed. What has been observed currently is that baboons handle this function on a stochastic basis. This aids the survival of many of the insect species, releasing seed and allowing for regrowth.

Despite the benefits of perpetuating natural processes like seed distribution in the fynbos, the same occurs in a less positive situation. The Overstrand has a growing problem with Rooikrantz, classified as an alien/invasive plant with its "roots" down under. The tree is nitrogen-fixing and its red seeds are thus very rich in nitrogen. Nitrogen being a serious requirement in most mammals. Naturally, the baboons prefer to limit their foraging time, so feed on the Rooikrantz, carrying the seed in their faeces and distributing it Baboon on cliff further a field. According to Spencer, "The Rooikrantz is a bit like a B&B for the baboons - providing both nitrogen and shelter."

With this in mind the Municipality is also doing a great deal, in conjunction with volunteer groups, to remove the Rooikrantz which will ultimately also influence change in the habits of the baboons.

In closing, it may be opportune to dispel a few of the myths surrounding baboons. Killing the Alpha (dominant) male will not solve the baboon problem. "It's a bit like shooting the President," says Spencer. Absolute anarchy takes place without leadership and this can lead to a "baby-boom" six months later. This will not only exacerbate the co-existence problems but will result in a weakening in the gene pool as siblings mate with one another.

Finally, baboons have no interest in human beings, seeing them only as a source of food. More often than not their surroundings more than cover their foraging/nutritional requirements. They have turned to "human food" as a consequence of ill-informed humans thinking it "quaint" to feed them.


Photos by Thomas P Peschak




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