Wednesday, February 06, 2013

African elephants prefer Serengeti National Park

 BBC News
6 February 2013 Last updated at 03:54
 By Michelle Warwicker BBC Nature

Elephants get stressed near humans

Wild African elephants prefer to live in safer, protected areas and become stressed when they leave them.

Scientists have found African elephants living outside Serengeti National Park are more stressed than those within the protected area.

More elephants also choose to live inside the park, suggesting they "know" which areas are safer to live in, and actively avoid humans.

Details are published in the African Journal of Ecology.

Serengeti National Park helps protect animals from threats such as illegal hunting and habitat disturbance.

With no fences around protected areas in the Serengeti, animals and people may come and go, and elephants can enter into areas where they are at greater risk.

The study aimed to determine African elephants' (Loxodonta africana) welfare inside Serengeti National Park and in the partially-protected adjoining areas of Grumeti Game Reserve and Ikoma Open Area, where human disturbance is greater.

By testing elephant dung, the research team found animals outside the national park had significantly higher levels of the stress hormone, gluccorticoid.

Also, more elephants lived inside the park, while no single males were seen outside, suggesting the elephants preferred residing in potentially safer areas.

"The reason is most probably that elephants try to avoid human-elephant interactions," said research team member Dr Eivin Roskaft from the Norwegian University of Science and Technology in Trondheim.
Elephants never forget?

The elephants may have learned to associate humans and vehicles with the hunting activity that occurs outside Serengeti National Park.

"Elephants probably remember where they are, and that bad experiences stress them," Dr Roskaft told BBC Nature.

"I think elephants know where they are safe or not. However, sometimes they also are tempted by nice food outside the park which attracts them to such areas."

The study is the latest research to show that animals avoid areas with human disturbances. A previous study, for example, showed African elephants became stressed even before raiding farmers' fields for crops.

The research team hope their latest study demonstrates how protected areas such as Serengeti National Park can improve elephants' welfare.

Law enforcement within the park aims to reduce illegal meat and ivory poaching. Despite this, hunters still frequent the edges of the park and surrounding areas.

"The biggest threat to African elephants and other wildlife is the human population increase outside all such parks," said Dr Roskaft.

"Humans need food, and wildlife is cheap and easy. Therefore the pressure on such animals increases."

According to Dr Roskaft, elephant poaching is once more increasing.

"The elephant population in Africa is presently declining at an alarming rate," he said.

"The world must find interest in it, if not there will be very few or no elephants in Africa in about five to six years."


California was once home for millions of years to elephants which were wiped out by a combination of human beings and global warming. We had the biggest elephants on earth here, the imperial mammoths of the Columbian type. And we still have millions of acres of natural elephant food: California oak trees which I think are suffering sudden oak disease and probably other diseases because their natural cycles as elephant food have been disrupted for the last 12,000 years. Why don't we start some serious African elephant reserves here in California? And even contemplate our own Pleistocene Park with mammoths resurrected with dna and African surrogate mothers..

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