Navigation Links
Global warming threatens Australia's iconic kangaroos
Date:10/15/2008

As concerns about the effects of global warming continue to mount, a new study published in the December issue of Physiological and Biochemical Zoology finds that an increase in average temperature of only two degrees Celsius could have a devastating effect on populations of Australia's iconic kangaroos.

"Our study provides evidence that climate change has the capacity to cause large-scale range contractions, and the possible extinction of one macropodid (kangaroo) species in northern Australia," write study authors Euan G. Ritchie and Elizabeth E. Bolitho of James Cook University in Australia.

Ritchie and Bolitho used computer modeling and three years of field observations to predict how temperature changes that are considered to be likely over the next half-century might affect four species of kangaroos. They found that a temperature increase as small as a half-degree Celsius may shrink kangaroos' geographic ranges. An increase of two degrees may shrink kangaroos' ranges by 48 percent. A six-degree increase might shrink ranges by 96 percent.

Ritchie says that generally accepted climate models predict temperatures in northern Australia to be between 0.4 and two degrees warmer by 2030, and between two and six degrees warmer by 2070.

The most significant effects of climate change are not necessarily on the animals themselves, but on their habitatsspecifically, in amounts of available water. This is particularly true in Northern Australia, says Ritchie.

"If dry seasons are to become hotter and rainfall events more unpredictable, habitats may become depleted of available pasture for grazing and waterholes may dry up," the authors write. "This may result in starvation and failed reproduction or possible death due to dehydration for those species that are less mobile."

And although kangaroo species may be mobile enough to relocate as the climate changes, the vegetation and topography for which they are adapted are unlikely to shift at the same pace.

The antilopine wallaroo, a kangaroo species adapted for a wet, tropical climate, faces the greatest potential risk. Ritchie and Bolitho found that a two-degree temperature increase may shrink its range by 89 percent. A six-degree increase may lead to the extinction of antilopine wallaroos if they are unable to adapt to the arid grassland that such a temperature change is likely to produce.

"Large macropodids are highly valuable economically, through both ecotourism and a commercial meat trade, and many species are an important food source for indigenous people," they write. "Therefore, it is critically important that we understand the ecology of Australia's native herbivores to ensure any further economic development will occur in an environmentally sustainable way."


'/>"/>

Contact: Kevin Stacey
kstacey@uchicago.edu
773-834-0386
University of Chicago Press Journals
Source:Eurekalert

Related biology news :

1. Tropical rainforest and mountain species may be threatened by global warming
2. 7 Texas mammals listed as threatened on Global Mammal Assessment
3. Mandate for biofuels production requires science-based policy and global perspective
4. World leaders in infectious diseases convene to discuss emerging global viruses
5. Experts to discuss global water crisis
6. Global science community to gather in Mozambique
7. Growth in the global carbon budget
8. New studies find global warming will have significant economic impacts on Florida coasts
9. New study offers solution to global fisheries collapse
10. McGill conference on Global Food Crisis draws impressive list of international participants
11. Fuel emissions from marine vessels remain a global concern
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/23/2017)... N.Y. and ITHACA, N.Y. ... ) and Cornell University, a leader in dairy research, ... with bioinformatics designed to help reduce the chances that ... With the onset of this dairy project, Cornell University ... Consortium for Sequencing the Food Supply Chain, a food ...
(Date:5/16/2017)... -- Veratad Technologies, LLC ( www.veratad.com ), an innovative and ... solutions, announced today they will participate as a sponsor ... May 17, 2017, in Washington D.C.,s ... Identity impacts the lives of billions of ... digital world, defining identity is critical to nearly every ...
(Date:4/24/2017)... , April 24, 2017 ... and partner with  Identity Strategy Partners, LLP (IdSP) ... "With or without President Trump,s March 6, 2017 ... Terrorist Entry , refugee vetting can be instilled with ... resettlement. (Right now, all refugee applications are suspended ...
Breaking Biology News(10 mins):
(Date:8/15/2017)... Diego, CA (PRWEB) , ... August 15, 2017 ... ... company pioneering graphene biosensors that accelerate pharmaceutical and biotherapeutics development, announces the launch ... the number of steps needed to gain kinetic binding data for a wide ...
(Date:8/15/2017)... ... August 15, 2017 , ... Coffea ... various biotic and abiotic factors. During this educational webinar, participants will learn about ... well as gain a better understanding of how genomics is important for coffee ...
(Date:8/11/2017)... 11, 2017  Market researcher Kalorama Information ... article regarding the telemedicine market.  The telemedicine ... Information.  The article, "Heart and Asthma ...  used information from Kalorama Information,s Remote Patient ... Market  (Sleep, Diabetes, Vital Signs /EKG ...
(Date:8/10/2017)... Philadelphia, PA (PRWEB) , ... August 09, 2017 ... ... back to the classroom next week-- as students. From August 14th through the ... Institute. The institute, which debuted in the summer of 2016, provides Philadelphia-based middle ...
Breaking Biology Technology: