The Sumatran elephant (Elephas maximus sumatranus), found only on the island of Sumatra in Indonesia, is critically endangered according to the International Union for the Conservation of Nature (IUCN). The population is decreasing with approximately 1500 elephants left in the wild in fragmented populations. Deforestation, loss of habitat and poaching for ivory are amongst the major threats to the survival of this species.
The Leuser Ecosystem (which forms a significant part of the UNESCO World Heritage site ‘Tropical Rainforest Heritage of Sumatra’) and Ulu Masen in Aceh, Sumatra are a stronghold for the critically endangered Sumatran elephant and other critically endangered wildlife (e.g. orangutans, rhinoceros, and tigers). Both Leuser and Ulu Masen are essential for the survival and conservation of the Sumatran elephant, but much of their habitat falls outside the protected areas and in the most threatened lowland forests, creating elephant human contact. This makes it critical that effective mitigation strategies are developed that take into account elephant behaviour and the use of technology such as early warning systems to reduce conflict with the local communities.
A new study brings hope for reducing conflicts between elephants and farmers in Thailand
Guest post by Antoinette van de Water
Kaeng Hang Maeo district in Eastern Thailand is in an area of high human-elephant conflict. A herd of about 70–80 elephants lives between the protected areas and agricultural land, causing damage to crops almost on a nightly basis. Over four years ago, Bring The Elephant Home (BTEH) and the Phuluang Wildlife Research Station started a joint project to evaluate the effectiveness of beehive fences in deterring Asian elephants, under supervision of Dr. Lucy King. We set up a pilot beehive fence around a subsistence farm surrounded by elephant habitat and installed camera-traps to record the elephants’ reactions to the bees, which belong the species Apis mellifera, or European honeybee.
Over a decade ago now, Dr. Lucy King developed the beehive fence as an elephant deterrent, capitalising on a then-recent discovery that African elephants avoided African honeybees (Vollrath & Douglas-Hamilton, 2002). The beehive fence is a relatively simple, inexpensive deterrent, aiming to be a tool that communities can use independently following set-up. The basic premise is that a series of beehives surround an area to be protected from elephants, and if elephants attempt to enter, they will disturb the beehives, causing the colonies to swarm (refer to King et al. 2009; 2017 for more details). It should come as no surprise, that the success of multiple beehive fence trials in Africa, led to a curiosity as to whether this technique could also help Asian communities experiencing comparable levels of crop-raiding.
These farmers in Sri Lanka are at the interface of forest and agriculture, where most incursions by elephants occur.
In Sherpur, rural Bangladesh, as the human population increases, so does the demand for the land and natural resources that the elephants need to survive. This is a story of human-animal conflict that is repeated around the globe with many species and rural communities as they struggle to find the balance for coexistence. Continue reading →
The living elephants – Asian elephant, African forest elephant and African savannah elephant.
Guest post by Michael Pardo
Ask most people what sound an elephant makes and they are likely to think of a trumpet. In reality though, elephants produce an incredible variety of different vocalizations. The most common call is a deep, pulsating rumble, so low-pitched that human observers sometimes feel it more than hear it. Elephants also roar—powerful, bellowing sounds that carry across the landscape. And sometimes, they give combination calls, in which one or two rumbles and roars are stitched together with no pause for breath.
I visited Udawalawe in 2014 to work with the Udawalawe Elephant Research Project, and was especially fascinated by these combination calls. Combining meaningful units into sequences with an additional meaning is a key component of human language, but there are relatively few examples of this phenomenon in other species. Listening to the Udawalawe elephants, I was struck by the fact that they nearly always produced combination calls in the same order: a single roar followed by a single rumble. Why was this? Could it be analogous to grammatical rules in human language? Or could it be as simple as an anatomical constraint that made it difficult for the elephants to produce a rumble before a roar? Continue reading →
We traveled to Sri Lanka to work with Trunks & Leaves in support of schools surrounding the Udawalawe National Park. We first arrived in Negombo, Sri Lanka where we were met by Deepani, who works with Trunks & Leaves, and her friend Jocelyn. We traveled by car to Udawalawe where we were joined by Sameera, the project coordinator. We visited the first Montessori preschool, operated by Sameera’s sister, Chathurika. She was gracious in showing us the school, which was closed for the holidays. She had been hard at work painting furniture and cleaning the classroom and play area for her 18 students. Her school, which is attached to her home, is surrounded by many fruit trees. Her family members supported her passion for educating children in her town.
Our next stop was school teacher Shiromi’s home. We met with Shiromi who greeted us with her family and offered the most amazing homecooked treats. We chatted about her work in the village and her school, Dimuthu preschool. We met with Shiromi again the following day, where we observed the children in her classroom. The parents were very supportive of Shiromi and came to the school with their children even though they were supposed to be on holiday. We got to sing and dance the “hokey pokey”.
Deepani, Yogi and Sameera with the first cohort of preschool teachers whose schools received support from Trunks & Leaves’ sponsors (photo courtesy of Yogi Patel).
A group of elephants visit the grasslands surrounding the Kabini Reservoir in Southern India. Photo: Kabini Elephant Project
India includes some of the largest populations of Asian elephants in the world: an estimated ~26 000 to 28 000 elephants distributed across four regions. Of the four regions, southern India includes the single largest population of Asian elephants in the world (~14 000) and elephants are distributed across the Western and Eastern Ghats.
I studied the ecology and behaviour of Asian elephants as part of an ongoing long-term project on elephants, the Kabini Elephant Project, which was started in March 2009 to study the social life of elephants. Continue reading →
A camera trap photo shows Sumatran elephants trekking through lush regenerating forest.
I had always been told the same thing over and over again from my schooling, the scientific papers I read, and people I met growing up. This was that once primary rainforest was gone and removed from the Earth, it could not grow again. I was told that the forest needed a constant cycling of nutrients to flourish. That without the trees blanketing the ground in leaf litter the soil would be devoid of any nutrients needed to create such rich life again.
I had also been told that important forest dwellers such as the Sumatran Orangutan would only find a home in thick established forests. I had read in many different papers that Sumatran Orangutans, unlike their Bornean cousins, never spent any time walking on the forest floor in fear of the predatory Sumatran Tiger.
Considering all this, you could imagine my surprise and awe when I found myself in the middle of a brand new Sumatran rainforest, barely five years old, seeing orangutans walk the ground in front of my very eyes. It was then that I knew that anything was possible. Continue reading →
By Mickey Pardo, Cornell University & Open University of Sri Lanka
Down the Old Mau Ara Road we drove, my head swiveling left and right as I scanned for elephants on the grassy strips to either side. Then we rounded a bend, and Lucy slowed to a stop in front of the herd standing thirty meters away. It was a rather large group: , , , and , along with a number of sub-adults and juveniles.  and a sub-adult female approached slowly to within a few meters of our jeep.
RAAAAAAAHHHHHHH! With no warning, they bellowed in our faces in deafening unison! Continue reading →
I gazed out on Uda Walawe National Park for the first time in over a year as our jeep trundled through the entrance gate. I welcomed the cool morning air that I knew would swiftly turn hot as the sun climbed higher in the sky. Dark clouds loomed threateningly overhead, but they were all bluff. Uda Walawe is experiencing something of a drought this year—while we were driving to the park I noticed that the roaring river I remembered from last December had been replaced by a wide strip of boulders and trees.
Drought does have its advantages though. The ponds and reservoirs in the park had receded, baring flat, open areas that stood out in stark contrast to the dense shrubs and trees blanketing most of the habitat. I knew that if we were lucky enough to encounter elephants at any of these waterholes, I would have a clear line of sight for behavioral observations. Continue reading →