Scientists are racing to preserve Madagascar’s trove of unique flora and fauna as deforestation threatens the African island’s diverse plant and animal wealth. And these riches keep growing as researches discover more and more endemic species in its rainforests.
Extinction of Madagascar’s lemurs would cause a ‘extinction cascade’ event scientists warn. (Image: Royal Botanic Gardens Kew)
Ecological researchers continue to discover new plant and animal species in Madagascar’s forests. In the last 15 years they have discovered 600 new species. According to a World Wildlife Fund (WWF) report, 385 plants, 42 invertebrates, 17 fish, 69 amphibians, 61 reptiles and 41 mammals have been discovered on Madagascar.
These species are found nowhere else on Earth and now they are under threat as farmers clear-cut the forests to make way for agriculture – or to sell the timber. In a country where most live on less than a dollar a day, the country’s biodiversity comes second to the need to earn a living and feed your family.
Saving the island nation’s plant kingdom has become the enterprise of a team of botanists from the Royal Botanic Garden in Kew, England. The team, led by Solofo Eric Rakotoarisoa, trek into the forests, clamber up limestone cliffs and cross submerged roads to collect seeds to be stored in the Millennium Seed Bank at Kew Gardens.
Seeds harvested in Madagascar are flown to the temperature controlled seed bank in Kew, England. (Image: Royal Botanic Gardens Kew)
The project is a race against extinction. Once the seeds are collected, they are sorted and labelled, and then flown to the UK for safeguarding. In the freezer botanists have already stored 1 800 seeds from Madagascar’s 13 000 plant species.
Since 2009, poverty, logging, mining and climate change have speeded up deforestation as the nation became poorer after former president Marc Ravalomanana was deposed and donor funding was suspended. Since the 1950s tavy, a slash and burn technique that clears forests for farming, charcoal production, and illegal logging, has led to four-fifths of the island’s forests being cleared.
Rakotoarisoa has sounded the alarm. “It’s getting to the point where it’s really obvious the forests are disappearing. It’s getting worse and worse [the slash and burn clearances]; the poverty in Madagascar is increasing.”
The aim of the Kew Gardens botanists is to create a storehouse of seeds that can be used to replace extinct plants. To head off that Armageddon, Madagascar’s population will need to understand the value of protecting the island’s biodiversity.
As Mark Wright, a conservation adviser at WWF-UK, points out: “If they have no practical way of making a living, of course they are going to turn to the natural resources sector and see what they can get from that, and who wouldn’t do it?”
Discoveries like the new species of wild coffee plant can be cultivated as a cash crop. Coffee, the most traded commodity after oil, would require protection of the remaining habitats while allowing families to earn a living.
Love lemurs? Go see them now
King Julien: “Don’t be alarmed, giant freaks! While you were asleep, we simply took you to our little corner of heaven. Welcome to Madagascar.”
‘Lemur’ means ghost in Latin, with wide-eyed, eerie stares and night time activity, it is easy to see how these spectre-like figures of Madagascar’s forests got their name. (Image: Royal Botanic Gardens Kew)
Unlike the lemurs in the movie, Madagascar’s long-tailed primates are in danger of losing their habitat and becoming extinct. The suspension of donor funding after the 2009 coup has sped up the destruction of the country’s forests and the habitats of the fabled wildlife.
After the coup, donors and lending agencies suspended or ended all non-humanitarian aid. Madagascar’s national park system received 80% of its budget from donors, and these sanctions devastated their ability to protect the island’s wildlife and plant life.
Or, as lemur expert and president of Conservation International Russell A Mittermaier explained: “Madagascar’s real brand, the real competitive advantage, is this unique biodiversity. By cutting the funding, we’re not just hurting Madagascar, we’re hurting the world as a whole.”
Lemurs represent Brand Madagascar. They offer the promise of observing rare species in their natural habitat, and experience in Africa – Rwanda and Uganda’s mountain gorilla programmes – show that eco-tourists are prepared to pay a premium for the privilege.
Extinction of the lemur population would lead to what primatologist Christoph Schwitzer refers to as an extinction cascade. “Lemurs have important ecological and economic roles, and are essential to maintaining Madagascar’s unique forests through seed dispersal and attracting income through ecotourism.”
Co-ordinated conservation is the best solution for Madagascar going forward Schwitzer believes. This would involve engagement with local communities, eco-tourism and long term-field research.
Madagascar’s Maromizaha Forest is a model for the preservation of the island’s eco-system. Members of the local community have been trained to be guides for tourists eager to see one of the 13 species of lemur that make the forest home.
Researchers have gone into local schools to teach children about the unique environment around them. And they have brought new, less destructive, methods of agriculture to local farmers. In the four years to 2011, the number of visitors to the Maromizaha Forest went from 200 to close to 3 000.
The increase in visitors brings with it risks. Schwitzer says: “There’s always a trade-off between the destruction caused by too many tourists and the money they bring to the country that can be used for wildlife conservation. This balance for Madagascar is still very positive for conservation and it’s a long way until it may tip over.”
Scientist predict 60% of 57 species unique to Madagascar are likely to find suitable habitat reduced by an average of 59.6% over the next 70 years, entirely due to climate change. (Image: Royal Botanic Gardens Kew)
Madagascar, the paradise on Earth
One hundred and sixty million years ago, or thereabouts, Madagascar broke off from continental Africa. Over time the island nation has developed a distinct natural eco-system. Today 95% of its reptiles, 89% of its plant life and 92% of its mammal population exist nowhere else. This diversity has ecologists referring to Madagascar as the eighth continent.
This unique menagerie includes more than 700 species of reptiles and amphibians. In Madagascar’s threatened rain forests visitors can find neon green geckos and tiny tree frogs that secrete toxins through their skin. Half of the world’s chameleon varieties have evolved on this speck – Madagascar is less than 0.5% of the Earth’s landmass, in the middle of the Indian Ocean.
Mark Wright explained in a 2011 report: “It is a very odd island. In terms of its geography, it helps speciation. There’s a mountain ridge down the middle, so on the east of the island you’ve got rainforest, but everything on the west is a rain shadow. So you get an enormous variety of environments from the very wet to the very dry. It’s a fantastic range of environments into which species can adapt.”