Natural History

Natural History

This is a new section for those who value the natural history side of our environment.
Ideas , suggested world wide links and contributions, are all most welcome. Mail greypath

Animal Encyclopaedia A huge site from the University of Michigan that covers every animal we could think of. Sometimes though, you need to know your genus your species to find your way around. A rare world resource.

Australian Birds This site list endangered species, plus a check list on all 800 + Australian birds and also some bird calls

Australian Plants, Botany, and Horticulture A top site, comprehensive and well worth a visit. Makes you realise just how much the Internet can deliver to us.


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Australian Attitudes Towards Climate Change

Submitted by rlewis on 7 June, 2007 - 11:45.

Source & full text: http://www.abc.net.au/news/newsitems/200706/s1942296.htm
5 June 2007
An international survey commissioned by an environmental group has found that the majority of people in 14 countries want governments to do more about climate change. The report was initiated by Australian environmentalist Jon Dee. Mr Dee says concern about the consequences of climate change is high among Australians. Jon Dee said that there is an emotional engagement because people, nine out of 10 Australians, are concerned about the impact climate change is going to have on the future of
Australia's kids. Seventy-three per cent of people now feel that seasons are not arriving at the same time of year any more. Mr Dee says most Australians still have a deep distrust of nuclear energy as a replacement for coal and oil-fuelled power stations. What scored higher was geothermal energy, hydro, tidal, wind and solar power, which was the most popular alternative of all.



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A Magnificent Idea

Submitted by rlewis on 6 March, 2007 - 12:14.
State and federal governments were working on an ambitious scheme to create a 2800km-long east coast wildlife corridor, stretching from Queensland's Atherton Tableland to the Victorian Alps. Millions of dollars are on the table for private landholders willing to change the way they run their properties. "There's a market in wildlife, it's become commercial," Ms Van Dyke a property manager, said. "We're not farming to feed livestock, we're farming but our product is wildlife. You can't eat it but you can appreciate it."   The Bush Heritage Fund paid $1.5million for Scottsdale, a 1300ha farm bordering on the Murrumbidgee near Bredbo. The farm was the first purchase made towards the grand east coast wildlife corridor, which is the brainchild of the NSW Government and conservation groups. Ms Van Dyke said climate change was a catalyst for the corridor project. Climate change affected rain, evaporation and temperatures, which meant habitats were changing. Animal and plant species needed to be able to move to find suitable habitat as climate change progressed, she said.   The corridor project sought to make that possible by creating a network of protected land from the tropical north to the cool southern alps. The corridor would be made up of formal reserves and private land which was set aside for wildlife. "We're trying to give [species] as much room as we can," Ms Van Dyke said. The Federal Department of the Environment said it was working with the states on the corridor and would spend $6million on it in 2005-06.   Most of the money would go to private landowners who placed a conservation covenant over part or all of their land. Money also was available to farmers for revegetation projects. The Bush Heritage Fund singled out Scottsdale as a suitable property to start the corridor because of its location close to the Namadgi National Park. Scottsdale is made up of temperate grasslands and box gum woodlands, which the fund says is valuable habitat for native species. Threatened species like the diamond firetail, gang-gang cockatoo and silver-leafed gum had been observed on the property, Ms Van Dyke said. Reptiles and raptors also were flourishing.   Since the purchase went through in December, the fund has been busy making Scottsdale wildlife-friendly. Sheep and cattle have been eating down weeds and non-native grasses like Patterson's Curse and African Love Grass, with native grasses like kangaroo grass sown in their place. Professional shooters have been hired to kill foxes. The property's "plateau country", which had been over-grazed, was cleared of sheep. Ms Van Dyke said Scottsdale would become a showpiece of the east coast corridor scheme, with the CSIRO and the ANU interested in using it for research and field trips.* Canberra Times

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Global warming and the Ph of the oceans

Submitted by rlewis on 27 December, 2006 - 09:03.

waves

One of the most unexpected consequences of global climate change may well turn out to be one of the most severe in terms of impacts on life on earth. As continued carbon emissions accelerate global warming, the carbon dioxide contained in those emissions is able to silently yet dramatically reduce the alkalinity of the oceans. And as the pH drops, marine organisms that produce shells and carbonate skeletons grow weak and die off.

The discovery that carbon dioxide emissions can lower global ocean pH is very recent, even though chemists and biologists have for long known that when carbon dioxide dissolves in water, carbonic acid results.

One of the most unexpected consequences of global climate change may well turn out to be one of the most severe in terms of impacts on life on earth. As continued carbon emissions accelerate global warming, the carbon dioxide contained in those emissions is able to silently yet dramatically reduce the alkalinity of the oceans. And as the pH drops, marine organisms that produce shells and carbonate skeletons grow weak and die off.

The discovery that carbon dioxide emissions can lower global ocean pH is very recent, even though chemists and biologists have for long known that when carbon dioxide dissolves in water, carbonic acid results. However, the sheer volume of water in the oceans has always been assumed to be so vast as to be safe from changes in chemical balance brought about by small scale inputs. In effect, it is just plain hard to imagine that atmospheric inputs of any kind could significantly alter the chemical composition and nature of over 1.3 trillion cubic kilometers of ocean water. Thus when intrepid oceanographers and marine ecologists set out to address the question of how changing atmospheric conditions that lead to changes in pH could affect marine life, they raised alarms about the possibilities of very large scale impacts.

Like all significant and surprising scientific discoveries, many great minds may have simultaneously converged on the idea that loading up the atmosphere with carbon emissions would begin to affect the ocean environment, and in turn its ability to further sequester carbon and maintain environmental parameters in balance. The story of one such scientist playing a key role in uncovering the phenomenon of ocean acidification was Victoria Fabry. According to New Scientist magazine1, Fabry was doing shipboard experiments on small pteropod mollusks she kept in sealed jars, when she began to notice that their shells were dissolving. She surmised that the carbon dioxide respired by the pteropods was making the seawater more acidic and dissolving the calcium carbonate of their shells



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Cane Toads and Wildife Recovery

Submitted by rlewis on 5 December, 2006 - 10:42.


canetoadCane toad

 Research from Sydney University's Shine Institute suggests the long-term impact of cane toads on wildlife is less destructive than first thought. The arrival of the toad in the Northern Territory has caused the populations of death adders, goannas and quolls to be drastically reduced. But researcher Ben Phillips says all of the species under threat are evolving to cope with the toad's deadly poison.

Research from Sydney University's Shine Institute suggests the long-term impact of cane toads on wildlife is less destructive than first thought.

Research from Sydney University's Shine Institute suggests the long-term impact of cane toads on wildlife is less destructive than first thought. The arrival of the toad in the Northern Territory has caused the populations of death adders, goannas and quolls to be drastically reduced. But researcher Ben Phillips says all of the species under threat are evolving to cope with the toad's deadly poison. He says a 2005 research paper shows many native animals initially killed by the poisonous toads are evolving and their offspring are becoming immune.  He says he is confident the study being conducted at Fog Dam, south of Darwin, will show wildlife have the potential to be back at normal population levels within 50 years.

"The facts are that there's species that we know that have been impacted by cane toads very badly that are still surviving in areas where there is toads and there have been toads for a very long time, so something must have changed," he said. "The most likely explanation is that all those populations have evolved - that we have certainly shown for a couple of species now." Mr Phillips says a campaign to stop the cane toad's march across the country is ineffective. "Trapping toads is a little bit like standing out here in the flood plain and swatting at mosquitos," he said. *ABC



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Amateurs Unearth Rare Fish Fossil (Australia)

Submitted by rlewis on 1 December, 2006 - 10:01.

Source & full text: http://www.theaustralian.news.com.au/story/0,20867,20802039-30417,00.html

It lived more than 100 million years ago, swimming in the southern ocean when Australia was effectively a polar continent.
At two metres long with large blade-like teeth, it was an impressive carnivore, something of a cross between a modern-day barracuda and a swordfish.
Now a pair of South Australian amateur fossil hunters, Tom and Sharon Hurley, say they have uncovered a wonderfully preserved snout of the previously unknown species, which will eventually bear their name.
Their find came on a trip to Queensland last year, when the couple's curiosity was sparked by an odd looking skull inside a large lump of rock..
It was handed over to the South Australian Museum and after many months of work has emerged as a new species of fish…



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$12 million research collaboration for Ningaloo Reef region

Submitted by rlewis on 1 December, 2006 - 09:16.

Green turtle tracks at Ningaloo. Image courtesy of Robert Thorn and the Department of the Environment and Heritage.

Green turtle tracks at Ningaloo. Image courtesy of Robert Thorn and DEH

The Minister for Education, Science and Training the Hon Julie Bishop MP has announced a $12 million research collaboration for Western Australia's Ningaloo Reef Region.

The research collaboration will be led by Murdoch University in collaboration with Curtin University of Technology, The Sustainable Tourism CRC, The University of Western Australia, Edith Cowan University, The University of Queensland, The Australian National University and CSIRO's Wealth from Oceans National Research Flagship.

"The Ningaloo region is a unique marine ecosystem and we need to ensure that we understand how we can best manage and conserve it for the future," Minister Bishop said.

"The cluster will bring the research capacity of eight institutions together to address the challenges affecting the management strategy for the Ningaloo Marine Park and adjacent coastal regions.

"It will be a unique research project for the Ningaloo region which will examine the reef's habitats and biodiversity along with the human uses of the reef, and the social and economic aspects of tourism in the region.

"The aim is to develop integrated computer models and having these readily adopted to drive the effective planning for conservation and sustainable development."

Minister Bishop said the Cluster would complement the research being undertaken by the Ningaloo Research Program that is part of the Western Australian Marine Science Institution (WAMSI), a programme initiated by the Western Australian Government.

All research results will be shared with WAMSI and other government agencies to deliver information and management data to ensure the conservation and appropriate development options for the region.

As part of the $305 million over seven years provided by the Australian Government to the National Research Flagships, $97 million was specifically allocated to further enhance collaboration between CSIRO, Australian universities and other publicly funded research agencies.

The Flagship Collaboration Fund enables the skills of the wider Australian research community to be applied to the major national challenges targeted by CSIRO's Flagship Initiative.



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