Media Release: 90 years of monitoring change in arid zone

A 400 hectare piece of land in South Australia鈥檚 outback, 400 kilometres north-east of Adelaide, is providing important data to听help researchers and land and environmental managers understand arid zone ecology and the impacts of grazing by sheep and听pests.

The , located in the centre of Koonamore Station, is one of the world鈥檚 oldest continuously听monitored scientific sites.

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Since it was established by Professor TGB Osborn in 1926, the Koonamore Vegetation Reserve has provided generations of听scientists, students and volunteers the opportunity to help preserve and study the unique ecology.

鈥淪uch a long period of data recording is unique in the Australian arid zone, and one of very few such sites in the world,鈥 says Visiting Research Fellow in the School of Biological Sciences, who has been directing ecological monitoring at听Koonamore for 43 years, now in collaboration with

鈥淭he reserve has shown the remarkable recovery of overgrazed vegetation after removal of sheep, but more especially after the听removal of rabbits. Clearly rabbits prevent regeneration of trees and shrubs by eating the small seedlings and make a large听difference to the natural vegetation. However, it seems that recovery is only steady after extraordinary rainfall events.

鈥淕ermination events are infrequent in low and erratic rainfall, so long-term records are essential to study the way this vegetation听works. We have enormous amounts of data from over the years, but there are many important research questions still to be听answered.鈥

Fencing the reserve has meant records contain a long history of vegetation without grazing over many years. Change over time听is monitored by recording vegetation changes (species, canopy size and density) within permanent quadrats and with photos听taken at 68 photopoints, usually every year.

鈥淭here have been several changes in the photographic technology over the years: from glass-slide negatives in the 1920s to听large format celluloid negatives, 35mm negatives, colour slides, colour prints and now digital,鈥 says Dr Sinclair. More than 8000听photos and detailed quadrat data are available via the for any researchers to听use.鈥

While most of the research to date has focussed on plant recovery, more recent research is monitoring animal life and the听impact that controlling grazing pressure has had.

鈥淎n increasing number of research studies are able to use these records to reveal how this fragile, arid ecosystem functions听and changes over time,鈥 says Associate Professor Facelli. 鈥淎s we face new global challenges, this information will become听even more important 鈥 only by understanding long-term changes can we begin to respond to them. Because of the importance听of the study, every effort is being presently made to ensure continuity of the project for generations of researchers to come.鈥

The 成人大片 has just launched the 2016 Koonamore Appeal, seeking support towards improvements required at听the site, including an urgent need for upgrading the fence surrounding the reserve. Anyone interested in supporting the appeal听should go to听the Koonamore Appeal Website.

Media Contact:

Dr Russell Sinclair, Phone: +61 (0) 8 8313 5689, Mobile: +61 (0) 418 908 019, russell.sinclair@adelaide.edu.au

Associate Professor Jos茅 Facelli, Phone: +61 (0) 8 8313 4559, Mobile: +61 (0) 438 027 464, jose.facelli@adelaide.edu.au

Robyn Mills, Media Officer, Phone: +61 (0)8 8313 6341, Mobile: +61 (0)410 689 084, robyn.mills@adelaide.edu.au
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