Featured Research

from universities, journals, and other organizations

Aboriginal hunting and burning increase Australia's desert biodiversity, researchers find

Date:
May 5, 2010
Source:
Stanford University
Summary:
In Australia, Martu hunter-gatherers light fires to expose the hiding places of their prey: monitor lizards called goanna that can grow up to 6 feet long. These generations-old hunting practices, part of the Martu day-to-day routine, have reshaped Australia's Western Desert habitats, say researchers.

Martu hunter Burchell Taylor burns a clump of spinifex grass to reveal lizard burrows in Australia's Western Desert.
Credit: Rebecca Bird

In Australia, Martu hunter-gatherers light fires to expose the hiding places of their prey: monitor lizards called goanna that can grow up to 6 feet long. These generations-old hunting practices, part of the Martu day-to-day routine, have reshaped Australia's Western Desert habitats, according to Stanford University anthropologists Douglas and Rebecca Bird.

"Martu" refers to a group of about 800 indigenous Australians from eight dialect-groups that inhabit the Western Desert. For 10 years, the Birds have been investigating Martu hunting strategies and their lasting environmental impacts. With support from the Woods Institute for the Environment at Stanford, the researchers have begun to explore what makes aboriginal hunting grounds molded by fire more biologically diverse than lands untouched by humans.

"The results of our work will be used to assist conservation efforts and joint indigenous land management policy in the Western Desert," said Douglas Bird, an assistant professor (research) of anthropology and principal investigator on the Woods Institute Environmental Venture Projects grant.

In many cases, humans aren't the wrench in nature's gears but an important piece of the clockwork, he added. And because so much of Australia's Western Desert, from lizards to shrubs, revolves around Martu practices, conservation efforts will succeed only if they incorporate traditional goanna-hunting practices, he said.

"We're trying to demonstrate what would happen if you did pull people off the landscape," he said. "What happens when you break all of these co-evolutionary links between people who've lived on the landscape for thousands of years and the diversity of the faunal and floral community?"

Martu life

Martu life revolves around hunting and fire, Douglas Bird explained. Martu inherit ritual duties that correspond to certain tracts of desert called "estates." An important part of this inheritance is the knowledge of when and where to light smoldering brush fires. Martu never start blazes without knowing every nook and cranny of a territory and often forgo campfires when traveling through foreign estates, he said.

"You never burn unless you're with someone who has all of that knowledge about that estate," he added. "If your fire were to threaten one of those totemic spots where they keep all their religious paraphernalia associated with these rituals, it's technically punishable by death."

The middle-aged and elderly women who typically hunt for goanna can spot the animal's burrows and tracks better in burn scars than in thick spinifex grass, explained Rebecca Bird, an associate professor of anthropology. Burning desert in about 55-acre chunks, the hunters make their grounds a patchwork quilt of recently burnt earth and recovering vegetation. These scars are much smaller than those left by lightning wildfires, which char an average of 2,000 acres.

Burning back grasses and other fire-prone plants encourages the growth of a diverse range of annual vegetation, she said. The variable turf of Martu hunting grounds allows small mammals to find plenty of places to hide from predators, she added, while areas free of human burning lack this patchwork quality and are home to fewer plants and animals.

"The thing that anthropogenic fire does is rearrange the landscape variation into smaller and smaller bits," said project collaborator James Holland Jones, an assistant professor of anthropology and a Woods Institute center fellow. "It happens to be the scale that animals, plants and people work at."

While Martu families believe strongly in preserving their lands and know all the animals and plants that benefit from burning, their fires are, first and foremost, tools for nabbing goanna meat.

"Martu don't think of it as, 'We apply fire in order to promote the future long-term biodiversity,'" Douglas Bird said. "They can talk about all those effects, but that's not what maintains the system."

To determine the impact of Martu hunting practices over time, the research team is searching the geologic record for evidence of burning thousands of years into the past. The researchers also will recreate the diversity of historic plant communities using molecular clues hidden in animal remains.

Conserving Australia's deserts

Despite growing awareness of the role that fire plays in wild space, many Australians have been slow to accept Martu burning practices, Rebecca Bird said. "They see it as a destructive force. It's in line with the thinking of most ecologists who view humans as a disturbance of the natural equilibrium," she said. "The Martu perspective is much more that humans are part of it all."

Most Australian conservationists have only paid lip service to Martu hunters, Douglas Bird noted. But desert conservation programs won't work unless they include an understanding of Aboriginal fire, he said. And because hunting is so central their culture, Martu men and women will only accept land-management practices that are compatible with their day-to-day subsistence.

"When you're drafting a fire-management program for a national park, if it's not done with respect to the actual practice of folks and the tradeoffs people face on a daily basis, then those prescriptions are disregarded," he said.

To bring Aboriginal representatives into a true dialogue on land management, a delegation from the Western Desert will meet with researchers on the Stanford campus in 2011 or 2012. The Birds and Martu leaders also will host an international conference for anthropologists and ecologists in Australia in 2011 on the role of fire in hunter-gatherer communities and ecosystems. A goal of the conference is to communicate that "indigenous knowledge is not different from scientific knowledge," Rebecca Bird said.

"Through generations of hunting for goanna, Martu appreciate fire for what it can be: a tool for shaping human communities as well as the natural world," she said. "They see the burned areas as beautiful. They say, 'It's safe. There are no snakes, no nasty things living here now that we've cleaned it up.'"

Other Stanford collaborators on the Woods Institute Environmental Venture Projects grant are Page Chamberlain, professor of environmental Earth system science; Tadashi Fukami, assistant professor of biology; and Katherine Maher, assistant professor of geological and environmental sciences.


Story Source:

The above story is based on materials provided by Stanford University. The original article was written by Daniel Strain. Note: Materials may be edited for content and length.


Cite This Page:

Stanford University. "Aboriginal hunting and burning increase Australia's desert biodiversity, researchers find." ScienceDaily. ScienceDaily, 5 May 2010. <www.sciencedaily.com/releases/2010/05/100503174030.htm>.
Stanford University. (2010, May 5). Aboriginal hunting and burning increase Australia's desert biodiversity, researchers find. ScienceDaily. Retrieved September 2, 2014 from www.sciencedaily.com/releases/2010/05/100503174030.htm
Stanford University. "Aboriginal hunting and burning increase Australia's desert biodiversity, researchers find." ScienceDaily. www.sciencedaily.com/releases/2010/05/100503174030.htm (accessed September 2, 2014).

Share This




More Earth & Climate News

Tuesday, September 2, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Iceland Lowers Aviation Alert on Volcano

Iceland Lowers Aviation Alert on Volcano

AFP (Sep. 1, 2014) Iceland has lowered its aviation alert on its largest volcano after a fresh eruption on a nearby lava field prompted authorities to enforce a flight ban for several hours. Duration: 01:07 Video provided by AFP
Powered by NewsLook.com
Lightning Hurts 3 on NYC Beach

Lightning Hurts 3 on NYC Beach

AP (Sep. 1, 2014) A lightning strike injured three people on a New York City beach on Sunday. The storms also delayed flights and interrupted play at the US Open tennis tournament. (Sept. 1) Video provided by AP
Powered by NewsLook.com
Thailand Totters Towards Waste Crisis

Thailand Totters Towards Waste Crisis

AFP (Sep. 1, 2014) Fears are mounting in Bangkok that poor planning and lax law enforcement are tipping Thailand towards a waste crisis. Duration: 01:21 Video provided by AFP
Powered by NewsLook.com
Melting Ice Shelves Drive Rapid Antarctic Sea Level Rise

Melting Ice Shelves Drive Rapid Antarctic Sea Level Rise

Newsy (Sep. 1, 2014) A study of almost 20 years' worth of satellite images shows Antarctic sea levels are on the rise as ice shelves continue to melt. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins