Study shows effect of feral buffalo on Kakadu

Jan 13, 2009
Dr Lynda Prior recording data on tree cover in the savanna at the Buffalo Farm.

The ecological effect of feral buffalo on Kakadu National Park has been the focus of a research study by a team of prominent Charles Darwin University researchers.

Research fellow with CDU’s School for Environmental Research (SER), Dr Lynda Prior, Adjunct Professor SER, Professor David Bowman, Lecturer Geographical Information Systems, Dr Guy Boggs and SER PhD candidate, Caroline Lehmann, recently published their ground-breaking paper in the Journal of Biogeography.

The study investigated the changes in woody vegetation in both floodplains and eucalypt savanna over a 40-year period using spatial analysis of variation in density of feral buffalo in Kakadu National Park.

Dr Prior said the study revealed that although the density of woody vegetation on the floodplain had increased during the 40-year study period, buffalo were not the major cause.

“The correlation between the densities of feral buffalo and the prevalence of woody cover in Kakadu National Park was weak,” she said.

“Rather, the observed increases in woody cover in both savanna and flood plains concords with regional trends and may be related to an increased level of atmospheric CO2, increasing rainfall and changing fire regimes during the study period.”

Professor Bowman said that feral buffalo built up to high densities in Kakadu until 1985, after which a control program almost eliminated the animals.

“In 1990, a buffalo farm was established within Kakadu National Park to supply meat to traditional owners, to compensate for the loss of the wild buffalo,” he said.

“However, these buffalo were at much lower densities than the feral buffalo had been, and were managed to minimise environmental impacts.

“Our study compared trends in woody vegetation when buffalo were high-density feral, low-density managed or absent.”

The study analysed sequences of digitised and geo-rectified aerial photographs acquired from dates up to 2004 to chart changes in woody cover on the floodplain and in the savanna.

Provided by Charles Darwin University

Explore further: Himalayan Viagra fuels caterpillar fungus gold rush

add to favorites email to friend print save as pdf

Related Stories

Buffaloes a divisive link to Hong Kong's past

Feb 18, 2013

A short journey from the skyscrapers at the hectic centre of Hong Kong, water buffaloes lumber over jungle-clad hills and through secluded villages where they once worked as farm animals.

Killing in the name of conservation

Feb 22, 2010

Thanks to the introduction of various non-native species to Australia throughout history, the country is overrun with feral animals. A new application developed by ecologists at the University of Adelaide to be published ...

Recommended for you

Himalayan Viagra fuels caterpillar fungus gold rush

7 hours ago

Overwhelmed by speculators trying to cash-in on a prized medicinal fungus known as Himalayan Viagra, two isolated Tibetan communities have managed to do at the local level what world leaders often fail to ...

Science casts light on sex in the orchard

10 hours ago

Persimmons are among the small club of plants with separate sexes—individual trees are either male or female. Now scientists at the University of California, Davis, and Kyoto University in Japan have discovered ...

Researchers capture picture of microRNA in action

10 hours ago

Biologists at The Scripps Research Institute (TSRI) have described the atomic-level workings of "microRNA" molecules, which control the expression of genes in all animals and plants.

User comments : 0

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.