Navigation Links
Traditional ranching practices enhance African savanna
Date:5/1/2013

New Haven, Conn. That human land use destroys natural ecosystems is an oft-cited assumption in conservation, but ecologists have discovered that instead, traditional ranching techniques in the African savanna enhance the local abundance of wild, native animals. These results offer a new perspective on the roles humans play in natural systems, and inform ongoing discussions about land management and biodiversity conservation.

For thousands of years, pastoralists in East African savannas have penned their cattle overnight in brush-walled corrals, called bomas. Bomas remain in use for about a year, resulting in tons of manure that fertilizes these small areas. After abandonment, a lush carpet of grass springs up and these fertile "glades" sometimes as large as a football field remain visibly distinct from the surrounding savanna for over a century.

The team of ecologists, based at the Mpala Research Center in Kenya, found that trees close to the edges of glades grew faster and were generally larger than trees elsewhere in the savanna. They also found more insects and, the particular focus of the study, higher densities of a native species of gecko, Lygodactylus keniensis.

"The effect of these glades is clear," said Colin Donihue, the Yale University doctoral student who led the research, which is described in Ecology's April issue. "Our findings are particularly exciting given how long glades persist in the savanna. This means that even decades after the pastoralists move on, they leave fertile footprints across the landscape that significantly alter the dynamics of the entire ecosystem."

Previous research has shown that glades are the preferred grazing sites of many large African mammals. Donihue et al.'s research uniquely demonstrates that the effects of glades cascade to a far broader swath of the savanna's plant and animal inhabitants.

The researchers also measured the interacting effects of nearby glades. Unexpectedly, the area between two close glades had some of the lowest gecko lizard densities and tree growth rates of the entire study. "This result was a surprise to us," Donihue said, "and has important management implications as we think about integrating knowledge from agrarian cultures and traditions into modern ranching practice."

The surprising result may be due to cattle overuse of the area between an established boma and nearby glade. Further experiments are currently underway at the research center to explore this pattern and determine optimal distances between bomas.

It is important to note that over-grazing can have myriad detrimental impacts on ecosystems. This project simply demonstrates that traditional corralling techniques in Kenya leave a landscape-scale legacy that can bolster local abundances of native plants and animals.

"With human populations booming, we must look beyond the 'leave no trace' conservation ethic," said Donihue. "We must strive to find ways that our impacts on ecosystems can work in concert with natural processes. Our study suggests that traditional practices, honed over millennia, offer insightful lessons on how to do it."


'/>"/>

Contact: Colin Donihue
colin.donihue@yale.edu
Yale School of Forestry & Environmental Studies
Source:Eurekalert

Related biology news :

1. Ag, big data, and traditional knowledge headline the Ecological Society of Americas 2013 Meeting
2. Dont be fooled: Flowers mislead traditional taxonomy
3. Traditional fisheries management approach jeopardizes marine ecosystems worldwide
4. By adding VSL#3 probiotic to traditional therapies UC patients can improve remission rates
5. Pain relief with PAP injections may last 100 times longer than a traditional acupuncture treatment
6. Some improved cookstoves may emit more pollution than traditional mud cookstoves
7. The Japanese traditional therapy, honokiol, blocks key protein in inflammatory brain damage
8. Molecular 2-way radio directs nerve cell branching and connectivity
9. Diverse bacteria on fresh fruits, vegetables vary with produce type, farming practices
10. Stronger support needed for healthy beverage practices in child care
11. Turf study to monitor runoff, establish fertilizer management practices
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/2/2017)... Summary This report provides all the ... interests and activities since 2010. ... Read the full report: http://www.reportlinker.com/p03605615-summary/view-report.html ... report provides an in-depth insight into the partnering activity of ... On demand company reports are prepared upon purchase to ensure ...
(Date:3/2/2017)... Who risk to be deprived of its imprint in ... https://www.reportbuyer.com/product/4313699/ WILL APPLE AND SAMSUNG CONFRONT EACH ... using capacitive technology represent a fast growing market, especially ... increase of 360% of the number of fingerprint sensor ... market between 2014 and 2017 (source : N+1 Singer, ...
(Date:3/1/2017)... BEDFORD, Mass. , March 1, 2017  Aware, ... and services, announced that Richard P. Moberg ... Officer and co-President and Chief Financial Officer and Treasurer ... will continue to serve as a member of the ... T. Russell , Aware,s co-Chief Executive Officer and co-President, ...
Breaking Biology News(10 mins):
(Date:3/22/2017)... ... March 21, 2017 , ... Aqua ... tripling its goal and raising over $30,000 in the first 40 minutes of ... veggies & herbs fast, easy, and affordably, anywhere. , “Simply add fertilized water ...
(Date:3/22/2017)... WI (PRWEB) , ... March 22, 2017 , ... The ... scientific research agencies as outlined in the Administration’s recently published fiscal year 2018 budget ... the National Institutes of Health (NIH) by $5.8 billion or roughly 20% of its ...
(Date:3/22/2017)... March 22, 2017  RXi Pharmaceuticals Corporation (NASDAQ: ... that address significant unmet medical needs, today announced ... Officer, will present at the 5th Annual Cancer ... a platform to present to and meet with ... and biotech companies as well as institutional investors. ...
(Date:3/20/2017)... City, NY (PRWEB) , ... March 20, 2017 ... ... and equipment for pharmaceutical and biotech companies, recently announced it will debut a ... in New York City. The intelliVessel is controlled by a touch screen panel ...
Breaking Biology Technology: