Featured Research

from universities, journals, and other organizations

Australian lake untouched by climate change

Date:
June 4, 2013
Source:
University of Adelaide
Summary:
Researchers have found that a lake on an island off the coast of Queensland, Australia, has been relatively untouched by changes in climate for the past 7000 years, and has so far also resisted the impact of humans.

This is a panoramic photo of Blue Lake on North Stradbroke Island, Queensland, Australia. The lake has been relatively untouched by changes in climate for the past 7,000 years.
Credit: Photo by Ashley Natt.

Researchers at the University of Adelaide have found that a lake on an island off the coast of Queensland, Australia, has been relatively untouched by changes in climate for the past 7000 years, and has so far also resisted the impact of humans.

Related Articles


Blue Lake, one of the largest lakes on North Stradbroke Island, southeast of Brisbane, has been the focus of research examining the lake's response to environmental change over time.

Researchers studied the lake's water discharge, water quality and comparisons of historical photos over the past 117 years, as well as fossil pollen and algae to better understand its history over the past 7500 years.

The results, published online in the journal Freshwater Biology, show that Blue Lake has remained relatively stable and resilient for millennia.

"Blue Lake is one of those rare, beautiful lakes in Australia. It's unusual because it's more than 10 metres deep but it's so clear you can see to the bottom," says the lead author of the study, Dr Cameron Barr from the University's Discipline of Geography, Environment and Population.

"We didn't realize just how unique and unusual this lake is until we started looking at a wide range of environmental markers.

"We know that there have been variations in climate in the region including North Stradbroke Island over recent decades, but during that time the depth, shoreline and water chemistry of Blue Lake has displayed little variation.

"We also know that the region experienced a significant shift towards a drier climate around 4000 years ago. Again, Blue Lake has demonstrated little variation over this period. This is in stark contrast to other changes in the region due to shifts in climate.

"It appears that Blue Lake has been an important climate 'refuge' for the freshwater biota of the region, and is in the same condition now as it was 7500 years ago. With appropriate management, the lake could continue relatively unchanged for hundreds, possibly thousands of years to come," Dr Barr says.

Project leader and co-author Dr John Tibby, also from the University of Adelaide, says the results of this research could affect decision making about utilising the freshwater aquifer of North Stradbroke Island as a source of fresh water for the mainland.

"Our study suggests that increased extraction of ground water represents one of the few obvious threats to the stability of Blue Lake. The threat this could pose to the lake's status as a stable freshwater refuge needs serious consideration if the regional aquifer of North Stradbroke Island is to be contemplated," Dr Tibby says.


Story Source:

The above story is based on materials provided by University of Adelaide. Note: Materials may be edited for content and length.


Journal Reference:

  1. Cameron Barr, John Tibby, Jonathan C. Marshall, Glenn B. McGregor, Patrick T. Moss, Galen P. Halverson, Jennie Fluin. Combining monitoring, models and palaeolimnology to assess ecosystem response to environmental change at monthly to millennial timescales: the stability of Blue Lake, North Stradbroke Island, Australia. Freshwater Biology, 2013; DOI: 10.1111/fwb.12154

Cite This Page:

University of Adelaide. "Australian lake untouched by climate change." ScienceDaily. ScienceDaily, 4 June 2013. <www.sciencedaily.com/releases/2013/06/130604093818.htm>.
University of Adelaide. (2013, June 4). Australian lake untouched by climate change. ScienceDaily. Retrieved April 18, 2015 from www.sciencedaily.com/releases/2013/06/130604093818.htm
University of Adelaide. "Australian lake untouched by climate change." ScienceDaily. www.sciencedaily.com/releases/2013/06/130604093818.htm (accessed April 18, 2015).

Share This


More From ScienceDaily



More Earth & Climate News

Saturday, April 18, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Nervous Return to Everest a Year After Deadly Avalanche

Nervous Return to Everest a Year After Deadly Avalanche

AFP (Apr. 18, 2015) In the Himalayan town of Lukla, excitement mingles with fear as mountaineers make their way up to Everest a year after an avalanche killed 16 guides and triggered an unprecedented shut-down of the world&apos;s highest peak. Duration: 00:37 Video provided by AFP
Powered by NewsLook.com
L.A. Water Cops Remind Residents of Water Conservation

L.A. Water Cops Remind Residents of Water Conservation

Reuters - US Online Video (Apr. 18, 2015) "Water cops" in Los Angeles remind the public about water conservation methods amid California&apos;s prolonged drought. Julie Noce reports. Video provided by Reuters
Powered by NewsLook.com
Planet Defence Conference Tackles Asteroid Threat

Planet Defence Conference Tackles Asteroid Threat

AFP (Apr. 17, 2015) Scientists gathered at a European Space Agency (ESA) facility outside Rome this week for the Planetary Defence Conference 2015 to discuss how to tackle the potential threat from asteroids hitting Earth. Duration: 00:54 Video provided by AFP
Powered by NewsLook.com
Gulf Scarred, Resilient 5 Years After BP Spill

Gulf Scarred, Resilient 5 Years After BP Spill

AP (Apr. 17, 2015) Five years after the Deepwater Horizon spill in the Gulf of Mexico, splotches of oil still dot the seafloor and wads of tarry petroleum-smelling material hide in pockets in the marshes of Barataria Bay. (April 17) Video provided by AP
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:

Strange & Offbeat Stories


Plants & Animals

Earth & Climate

Fossils & Ruins

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