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News articles on savannas
Mongabay.com news articles on savannas in blog format. Updated regularly.
Humans drove rainforest into savannah in ancient Africa
(02/09/2012) Three thousand years ago (around 1000 BCE) several large sections of the Congo rainforest in central Africa suddenly vanished and became savannah. Scientists have long believed the loss of the forest was due to changes in the climate, however a new study in Science implicates an additional culprit: humans. The study argues that a migration of farmers into the region led to rapid land-use changes from agriculture and iron smelting, eventually causing the collapse of rainforest in places and a rise of grasslands. The study has implications for today as scientists warn that the potent combination of deforestation and climate change could flip parts of the Amazon rainforest as well into savannah.
Richard Leakey: 'selfish' critics choose wrong fight in Serengeti road
(07/02/2011) The controversial Serengeti road is going ahead, but with conditions. According to the Tanzanian Minister for Natural Resources and Tourism, Ezekiel Maige, the road will not be paved and it will be run by the Tanzanian park authority who will have the power to monitor traffic to 'ensure no harm comes to the wildlife population'. Critics argue that even an unpaved road would eventually cripple the largest land migration in the world. However, famed Kenyan conservationist, ex-politician, and anthropologist, Richard Leakey, told mongabay.com that critics of the road are focusing on the wrong fight while failing to respect Tanzania's right to develop. Leakey says that instead of attempting to stop the road from being built, which he believes is inevitable, critics should instead focus on funding a truly wildlife-friendly road.
Unpaved road through Serengeti to progress
(07/02/2011) After a week of confusion, the Tanzanian government has finally clarified its position on the hugely-controversial Serengeti road. The Minister for Natural Resources and Tourism, Ezekiel Maige, confirmed that a paved highway will not be built through the northern Serengeti National Park, however the government is still planning to construct a gravel road through the park. Yet critics have long warned that even an unpaved road would open Pandora's box: eventually commercial and population pressure would push the road to be paved, widened, and fenced leading to a collapse of the world's largest remaining-and most famous-land migration. Two million wildebeest, zebra, and Thomson's gazelle pass along this route in annual migration from Tanzania to Kenya.
Last search for the Eskimo curlew
(06/29/2011) The Eskimo curlew is (or perhaps, 'was') a small migratory shorebird with a long curved beak, perfect for searching shorelines and prairie grass for worms, grasshoppers and other insects, as well as goodies including berries. Described as cinnamon-colored, the bird nested in the Arctic tundra of Alaska and Canada during the summer and in the winter migrated en masse as far south as the Argentine plains, known as the pampas. Despite once numbering in the hundreds of thousands (and perhaps even in the millions), the Eskimo curlew (Numenius borealis) today may well be extinct. The US Fish and Wildlife Service (USFWS) has decided to conduct a final evaluation of the species to determine whether its status should be moved from Critically Endangered to Extinct, reports Reuters.
How do tourists view the Serengeti?
(06/27/2011) Serengeti National Park in Tanzania, an immense expanse of East African savanna, is a world famous tourist destination because of its plentiful megafauna, particularly the great migrating herds of wildebeest. Yet despite huge visitor numbers and the annual revenue of millions of US dollars, local poverty and increasing population continue to imperil the reserve. A new study in mongabay.com's open-access journal Tropical Conservation Science found that while tourists to the Serengeti overall report a high degree of satisfaction with their trip, they are concerned about the future of the ecosystem.
Conversion of Brazil's cerrado slows
(04/08/2011) Destruction of Brazil's cerrado, a woody savanna that covers 20 percent of the country, slowed during the 2008-2009, reports Brazil's Ministry of Environment.
Complaint lodged at FSC for plantations killing baboons
(02/20/2011) The African environmental group, GeaSphere, has lodged a complaint with the Forest Stewardship Council's (FSC) for certifying tree plantations as sustainable that are culling baboons in South Africa, as first reported by FSC-Watch. The primates are trapped with bait and then shot. According to the complaint, "unofficial numbers from reliable sources state that more than 1000 baboons have been shot over the past 2 years" in Mpumalanga Province. Documents record permits given to cull 1,914 baboons in 13 separate plantations, however Philip Owen of GeaSphere says that plantations have refused to release official data on how many baboons have been killed.
Brazil's cerrado wins protection, but will it be enough to save the wildlife-rich grassland?
(09/15/2010) Brazil announced a plan to protect the cerrado, the vast woody savanna that covers 20 percent of the country but has become the nation's biggest single source of carbon emissions due to conversion for agriculture and cattle pasture, reports Brazil's Ministry of the Environment.
U.S. signs debt-for-nature swap with Brazil to protect forests
(08/13/2010) The United States will cut Brazil's debt payments by $21 million under a debt-for-nature that will protect the Latin American country's endangered Atlantic Rainforest (Mata Atlantica), Caatinga and Cerrado ecosystems.
Road through the Serengeti will eventually 'kill the migration'
(07/08/2010) Tourists, conservationists, individuals, and tour companies have launched an international outcry against the Tanzanian authorities in response to the announcement of the planned construction of the trans-Serengeti Highway highway. There is even a Facebook group and an online petition with 5,038 signatures. But the government has responded by saying that the plans are still on course.
Emissions from cerrado destruction in Brazil equal to emissions from Amazon deforestation
(09/15/2009) Damage to Brazil's vast cerrado grassland results in greenhouse gas emissions equivalent to those produced by destruction of the Amazon rainforest, said Carlos Minc, the country's Environment Minister.
Community engagement is key to saving the rarest zebra
(09/14/2009) Efforts to protect the world's largest and rarest species of zebra — Grévy's Zebra (Equus grevyi) — hinge on engaging communities to lead conservation in their region, says a Kenyan conservationist. Belinda Low, Executive Director of the Nairobi-based Grevy's Zebra Trust, says her group's programs, which employ members of local communities as scouts and conservation workers, are helping maintain dialog between communities while providing new opportunities for education and employment. Grevy's Zebra Trust is working with communities to plan livestock grazing so that it can be used as a tool to replenish the land, rather than degrade it
Painted Dog population falls 99%, but community efforts could save species
(09/28/2008) The painted dog, or African wild dog, was once found widely across Africa but relentless persecution by humans, coupled with habitat loss and spread of disease from domestic dogs, has driven the population down from 500,000 to less than 5,000 over the past century. The species is now listed as endangered by the IUCN. While the outlook is not good in many countries, there are emerging signs of hope, particularly in Zimbabwe where the efforts of a community-based conservation project has nearly doubled the population of the dog to 700 individuals.
40% of Australia is undisturbed wilderness
(08/27/2008) More than 40 percent of Australia—three million square kilometers—is undisturbed wilderness, reports a new study by Pew Environment Group and Nature Conservancy. The extent of Australia's wildlands ranks with the Amazon rainforest, Antarctica, Canada's boreal forest, and the Sahara as the largest on the planet.
Biofuels can reduce emissions, but not when grown in place of rainforests
(07/22/2008) Biofuels meant to help alleviate greenhouse gas emissions may be in fact contributing to climate change when grown on converted tropical forest lands, warns a comprehensive study published earlier this month in the journal Environmental Research Letters. Analyzing the carbon debt for biofuel crops grown in ecosystems around the world, Holly Gibbs and colleagues report that "while expansion of biofuels into productive tropical ecosystems will always lead to net carbon emissions for decades to centuries... [expansion] into degraded or already cultivated land will provide almost immediate carbon savings." The results suggest that under the right conditions, biofuels could be part of the effort to reduce humanity's carbon footprint.
Some grasslands resilient against climate change, according to 13 year study
(07/07/2008) In Buxton, England--a spa town lying in the county of Derbyshire--scientists have spent 13 years subjecting grasslands to temperature increases and precipitation shifts consistent with climate change predictions. Considered one of the longest studies of climate change on natural ecosystems, the grasslands of Buxton proved surprisingly resilient to most of the effects of climate change.
REDD could trigger bias in conservation funding towards carbon-rich ecosystems
(06/12/2008) The Reducing Emissions from Deforestation and Degradation (REDD) mechanism proposed as a means to fight global warming and protect forests may leave some ecosystems at risk to development argue researchers in an editorial published in the journal Science.
Marauding kangaroos may drive extinction of earless dragons in Australia
(05/21/2008) A plague of kangaroos overgrazing sensitive grasslands near Australia's capital city Canberra is jeopardizing habitat critical for the survival of endangered species including the golden sun moth (Synemon plana) and the grassland earless dragon (Tympanocryptis pinguicolla), one of the world's rarest lizards, according to German and Australian. Culling the kangaroos may be the only option for saving some of these grassland species from extinction.
Deforestation a greater threat to the Amazon than global warming
(02/25/2008) If past conditions are any indication of future conditions, the Amazon rainforest may survive considerable drying and warming caused by global warming, argue researchers in a paper published in Philosophical Transactions of the Royal Society B.
Land-clearing fires send smoke across Argentina, Paraguay
(09/11/2007) Thousands of fires likely set for land-clearing are sending thick smoke over southern South America, reports NASA.
U.S. grazing lands at risk due to rising CO2 levels
(08/27/2007) Rising carbon dioxide levels could cause significant changes to open grazing lands and rangelands around the world, reports a study published in the journal Proceedings of the National Academy of Sciences (PNAS).
Biofuels driving destruction of Brazilian cerrado
(08/21/2007) The cerrado, wooded grassland in Brazil that once covered an area half the size of Europe, is fast being transformed into croplands to meet rising demand for soybeans, sugarcane, and cattle. The cerrado is now disappearing more than twice as the rate as the neighboring Amazon rainforest, according to a Brazilian expert on the savanna ecosystem.
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