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Jennifer Marohasy

Jennifer Marohasy

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Archives for February 2006

Greenland Melting Faster Than, When it was Cooling?

February 18, 2006 By jennifer

I reckon it is nearly impossible to keep up with the climate change literature particularly the latest climate change scare story. Working out whether a particular piece of information is invented, real, real but exaggerated, etcetera, certainly takes effort.

Brisbane’s newspaper, The Courier-Mail, has a story on page 19 of this weekend’s edition titled ‘Greenland ice sheets double melt rate’.

It begins:

“Global warming is melting Greenland’s glaciers much faster than previously believed, raising fears that sea levels will rise rapidly during the next century”

This is how it works according to a latest issue of Science magazine:

“The Greenland Ice Sheet gains mass through snowfall and loses it by surface melting and runoff to the sea, together with the production of icebergs and melting at the base of its floating ice tongues. The difference between these gains and losses is the mass balance; a negative balance contributes to global sea-level rise and vice versa. About half of the discharge from the ice sheet is through 12 fast-flowing outlet glaciers, most no more than 10 to 20 km across at their seaward margin, and each fed from a large interior basin of about 50,000 to 100,000 km2. As a result, the mass balance of the ice sheet depends quite sensitively on the behavior of these outlet glaciers.

Two changes to these glaciers have been observed recently. First, the floating tongues or ice shelves of several outlet glaciers, each several hundred meters thick and extending up to tens of kilometers beyond the grounded glaciers, have broken up in the past few years. Second, measurements of ice velocity made with satellite radar interferometric methods have demonstrated that flow rates of these glaciers have approximately doubled over the past 5 years or so.”

This article in Science (Vol. 31, pg 963-964) goes on to explain that 2002 and 2005 are records for “melt extent over the 27 years of observation” – which I assume refers to the last 27 years.

Contrast this information with an article titled “Recent cooling in coastal southern greenland and relation with the north atlantic oscillation” published in 2003 by Edward Hanna and John Cappelen (Geophysical research letters, VoL. 30, NO. 3, 1132).

This research paper which covers the period up until 2002 (the year there was record melting according to the new article in Science magazine)states:

“Analysis of new data for eight stations in coastal southern Greenland, 1958-2001, shows a significant cooling (trend-line change -1.29C for the 44 years), as do sea-surface temperatures in the adjacent part of the Labrador Sea, in contrast to global warming (+0.53C over the same period). The land and sea temperature series follow similar patterns and are strongly correlated but with no obvious lead/lag either way. This cooling is significantly inversely correlated with an increased phase of the North Atlantic Oscillation (NAO) over the past few decades (r = -0.76), and will probably have significantly affected the mass balance of the Greenland Ice Sheet.

This 2003 paper only refers to coastal southern Greenland, while the new Science paper refers to “several large glaciers” and the last 5 years or so.

…………

Thanks to Phil Done for alerting me to the new paper in Science and Benny Peiser for the link to 2003 paper.

Filed Under: Uncategorized Tagged With: Climate & Climate Change

More on Methane & Forests

February 18, 2006 By jennifer

A paper published in Nature (Frank Keppler et.al., Vol 439, pgs. 187-191) some weeks ago indicating that tree emit methane, generated lots of media for a couple of days, and then nothing.

I wrote my last two columns for The Land on the issue, click here and here.

I received the following email in response:

Hello Jennifer,

It was with interest that I read your recent article on the effect of trees on the atmosphere. In my youth I worked in the timber industry as a faller and later as a dozer operator, here in this higher rainfall area the amount of termite activity in mature and maturing trees is amazing, almost every tree you would fall would have a nest in the butt and almost all stressed trees with a bit of dead wood in them will be ant infested, this does include quite small trees at times.

I noticed that the CSIRO tested methane in a young pinus radiata plantation I think they should be challenged to do their trials in a mature eucalypt forest, an old growth forest would be ideal, I’m sure the result would be a damn site different there.

Regards
Bruce Campbell

Thanks Bruce. I would also like to see some figures for mature tropical forests in Australia. And I was fascinated to read that termites emit 20 million tonnes of methane per year (Nature, Vol 439, pg. 148).

Filed Under: Uncategorized Tagged With: Climate & Climate Change

Politics, Religon and Those Cartoons

February 18, 2006 By jennifer

Growing up, I aspired at different times, to be a florist, a marine biologist, an archaeologist and a botanist. I worked for many years as an entomologist. I never thought I would become a writer.

Now I am a writer I am very aware of the importance of ideas, evidence, and freedom of expression in particular as a counter to the power of propaganda. I have written about the five basic rules of propaganda as defined by Norman Davies in a blog post titled ‘Interest versus Propaganda’.

Propaganda is perhaps easier to define than ‘free speech’ and usually much more subtle.

Free speech can be very offensive.

Explaining why e-journal Online Opinion did not publish the cartoons mocking Islam, but defending the right of others to publish the cartoons, Graham Young has written,

“If free speech defends only the right to be nice to others, then it is not worth defending itself. Free speech exists to protect the objectionable and the unreasonable, or it means virtually nothing.”

Today I read at Reporters without Borders that as a consequence of publishing those offending cartoons,

“At least eleven journalists are being prosecuted in five countries and six have been jailed. Some face long prison sentences if convicted. Two editors in Jordan have been charged with provocation and encouraging disorder. Four journalists have been jailed in Yemen and charged under article 103 of the press law, which bans publication of anything that “harms Islam, denigrates monotheistic religion or a humanitarian belief.”

I support the call from Reports without Borders for the imprisoned journalists to be released.

………………

The cartoons can be seen by linking to Tim Blair’s blog.

The last paragraphs of this blog post was changed and updated, following comment and advice from readers of this weblog including those offended by the cartoons, on the morning of 20th February and the cartoons and direct link removed.

Filed Under: Uncategorized Tagged With: Philosophy

Sun Bears (Part 1)

February 18, 2006 By jennifer

I have previously written that more effort should be put into “saving sun bears”, click here for that blog post.

The international organisation that regulates trade in endangered species, CITES, lists sun bear as threatened with extinction and notes that there is a trade in sun bear ‘body parts’ including for traditional medicines.

Several readers have commented they would like to know more about sun bears. I have no expertise and I don’t know anyone with expertise, but here goes …

An adult male Malayan sun bear grows to about 1.2 m tall when standing on its hind legs and can weigh up to 65 kg making them the smallest bear species.

They live in the forests of south-east Asian and eat a varied diet of fruit, vegetables, meat and honey.

A study of the ecology of the bears in Sabah, Borneo, by S.T. Wong from 1999 to 2001 concluded that the low density of bears in lowland rainforests was a consequence of food shortages during “non-mass fruiting years”.

sunbear.jpg

The picture of this sun bear is from Indonesianfauna.com. There is some general information on the ecology of sun bears at the University of Michigan Museum of Zoology website, click here.

Many conservation groups claim that the greatest threat to the long term survival of sun bears in the wild is poaching of bears for the traditional Asian medicine trade which prescribes sun bear fat, gall, meat, paws, spinal cord, blood, and bones for complaints ranging from baldness to rheumatism.

Bears are also caught for food, with sun bear paw soup considered a delicacy in Taiwan.

According to the Bagheera website:

“The Chinese have developed a way to extract bile from the gallbladders of live bears. An estimated 5,000 bears are now farmed for their bile. Descended from wild-caught individuals, the farm bears are now captive-bred. This effort is driven more by economics than concern for the animals. More than 100 times the bile can be obtained by milking a live bear than by killing one. Government officials claim that farming has slowed the killing of wild bears, but critics contend it actually promotes the use of bear products and makes them available to more people.”

A 2004 CITES report indicated that some bladders traded [I assume illegally] as sun bear gall bladders were actually from pigs.

The same report noted that some laboratories can distinguish between bile from wild sun bears and bile from captive-bred bears. I assume trade in the wild sun bear bile is illegal while trade in bile from captive-bred bears is legal?

The report included the following snippets of information on trade in sun bears and conservation efforts:

“Indonesia reported that its wildlife law enforcement staff had established good working relations with the country’s Drugs and Food Administration Authority and that they organize joint inspections of relevant shops. The Secretariat has previously reported that working with such agencies seems highly effective.

Malaysia reported undertaking enforcement campaigns that specifically targeted trade in bear specimens. This had resulted in early 2003 in the seizure of 43 alleged bear gall bladders from shops. Six cases involving illicit trade in Malayan sun bear specimens had been prosecuted in 2003. Five of the cases involved bear parts, whilst the sixth involved a live bear.

The Republic of Korea confirmed that the use of a sniffer dog to detect illicit trade at border control points was highly successful, with such a dog in their country detecting 85 cases in just over two years. The Secretariat notes that a survey conducted by TRAFFIC, published in July 2003, found that the use of tiger, rhinoceros and bear specimens in traditional medicine in the Republic of Korea was decreasing, although further work remained to be done on this issue.

Singapore reported that it had produced a leaflet in Chinese, explaining CITES and the use of specimens of endangered species (including bears) in medicine, which it was using to build on work it has done with traditional medicine associations in Singapore.

Viet Nam reported that it is working with non-governmental organizations and captivebreeders of bears to address the issue of bear farms. It has found this issue to be complicated by the fact that bear farms have been established with animals taken from the wild prior to Viet Nam introducing legislation protecting the species. It recognizes that this has adversely affected wild populations.”

…………
Some information on CITES:

The Convention on International Trade in Endangered Species of Wild Fauna and Flora, known as CITES, is an international treaty designed to control and regulate international trade in certain animal and plant species that are now or potentially may become threatened with extinction.

Appendix I includes species threatened with extinction that are or may be affected by trade. Appendix II includes species that, although not necessarily now threatened with extinction, may become so unless trade in them is strictly controlled. Appendix III includes species that any Party country identifies as being subject to regulation within its jurisdiction for purposes of preventing or restricting exploitation and for which it needs the cooperation of other Parties to control trade.

Filed Under: Uncategorized Tagged With: Plants and Animals

No Whale Meat Glut: Hiroshi Hatanaka

February 17, 2006 By jennifer

There have been reports, including from the BBC, that there is a glut of whale meat in Japan and that whale meat is being fed to dogs.

Dr. Hiroshi Hatanaka from Japan’s Institute of Cetacean Research (ICR) responded yesterday with a media release:

“The way in which this story has been spun by anti-whaling lobbyists through naive journalists who didn’t check their facts demonstrates the lack of objectivity that some media have when it comes to whaling,” the ICR’s Director General Dr. Hiroshi Hatanaka said today.

This is an indictment on western media who do not question the information they receive on whaling and instead further reinforce falsehoods and wrong assumptions. It is the public that loses through receiving false information,” he said.

The particular sale of whale meat for pet food referred by the journalists was carried out by a company near one of the traditional small-type whaling bases on the Boso Peninsula, south east of Tokyo. This was sold as a jerky-type product and was made from less than 100kg of a batch of Baird’s Beaked whale, which the processor received from a local whaling company.

Baird’s Beaked whale is not one of the species regulated by the International Whaling Commission and is not included in the ICR’s research programs. The sustainable management of this particular species of whale is regulated by the Government of Japan’s Fisheries Agency.

“The whale meat used for the pet food was ‘hyakuhiro’ – the small intestine of the whale commonly referred to as tripe – and other cheaper cuts that are not utilized for human consumption,” Dr. Hatanaka said. Similarly, a small percentage of whale by-products from the research programs, ie some leavings after processing, that are not utilized for human consumption are also processed for the pet food market. This accords with the International Convention for the Regulation of Whaling (ICRW) where it states that whales taken under the research provisions “shall so far as practicable be processed”.

“As with other meat industries, such as cattle and sheep slaughtering for instance, not every part of the whale – intestines, some organs, etc – is appropriate for human consumption and these parts are processed for the pet food market.”

“To suggest, as these groups have done, that fine cuts of whale meat from Japan’s research programs is being turned into pet food because Japan has a glut of it is not true,” Dr. Hatanaka said.

The distribution of frozen whale meat from the research programs is highly regulated. The price range that Japanese consumers are expected to pay is set by the Government and the supply to the market is kept under tight control and drip fed to ensure that whale meat is available in selected areas throughout the entire year.

“Demand always exceeds supply. At any given time, there will be an amount of whale meat in storage to ensure supply is always available. Japanese are not losing their taste for whale, and if left to market forces, the price of whale meat would increase considerably and reach consumers at unaffordable prices,” Dr. Hatanaka said.

“The fact that the price of whale meat is well regulated by the Government means it is also affordable for some schools to reintroduce it as a protein-rich lunch option for pupils.”

The wholesale price of minke whale red meat is set at a fixed price of 1950 Yen per kilogram. The whale meat from the western North Pacific research is available to the public from mid-December onwards.

Dr. Hatanaka said anti-whaling lobbyists are told when the catch reaches storage and coincide their public relations campaign to falsely allege the augmented supplies mean whale meat is not in demand because there is a large amount of it.

“Obviously our stocks of whale meat increase when we start selling the by-products from the North Pacific after Government approval in December and again when selling by-products from the Antarctic in July. It is at these times that supplies of whale meat are at their highest,” Dr. Hatanaka said.

…………
*The original BBC News story has been updated and changed. If anyone has a copy of the original story quoting the conservation groups could they please email it to me.

And I should have checked ‘my facts’ before posting last Saturday.

Filed Under: Uncategorized Tagged With: Plants and Animals

Croc Hunting: NT Government Again Seeks Federal Approval

February 17, 2006 By jennifer

The Northern Territory Government is yet again seeking support from the federal government, this time the new Federal Indigenous Affairs Minister for crocodile safari hunting, according to ABC News Online.

Last year the Federal Government rejected the Territory’s proposal that would see 25 crocodiles a year killed by trophy hunters.

A friend wrote to me at about that time:

“We in the NT are currently battling the Fed Government over our right to allocate 25 of the 600 wild crocs taken each year by landowners to safari hunters, which can increase the money landowners get for tolerating crocs.

The only difference here is who pulls the trigger and how much the landowner gets. It is all being held up because of concerns of “wounding”, with apparently Steve Irwin being the resident expert advising the Federal Minister.”

There were once less than 5,000 saltwater crocodiles in the Northern Territory. The population was decimated in the late 1940 and 1950s by hunters. A ban was placed on hunting and the exportation of skins in the early 1970s. Croc numbers have bounced back and are now estimated at 70,000.

Ecologist Dr Grahame Webb was involved with the program to rebuild croc numbers. He told me the following three principles were promoted:
1. Public education,
2. A program to contain problem crocs including trying to keep crocs out of Darwin harbor,
3. Ensuring crocs had a commercial value – so landholders saw them as an economic asset rather than a pest.

The program has been successful in so much as numbers are high and about 20,000 eggs and 600 crocs are harvested from the wild each year under a permit system. Eggs sell for about $40 each while crocs sell for perhaps $500.

Many locals, however, resent the crocodiles.

The following arguments have been progressed in favour of the safari hunting proposal:

1. The NT’s crocodile management program was implemented in the late 1970s against fierce opposition from animal rights NGOs, nationally and internationally. Their dire predictions all proved groundless. NT judgement on crocodile management in the NT has a long track-record of being proven correct, whereas the unsubstantiated claims of impassioned animal rights proponents have all proved spurious.

2. With the UN urging Government’s around the world to help achieve development based on environmental sustainability, and with Australia supporting these initiatives, the Federal Government should be proud and supportive of the model sustainable use program implemented in the NT with crocodiles. It is providing the international leadership the UN is seeking.

3. There can be no hunting or fishing of any species without risk of wounding and/or injury to the target species. Nor can there be farming without risk of injury to the species being farmed. Nor can there be cars on the road without road kills of wildlife. Animal welfare provisions and codes are in place throughout developed countries to reduce “unnecessary pain and suffering” within whichever context the human-animal interaction takes place.

4. If the Federal Government assumes wealthy experienced hunters, with the best hunting equipment money can buy, with experienced backup guides in place for a second shot, are amateurs that pose an undue threat to the welfare of crocodiles, then the assumption should be well grounded in fact. It should not be based on psuedoscience or the unsubstantiated opinion of people totally opposed to any hunting, of any species, for any reason.

5. If Government does assume wounding rates and injuries would be excessive – despite the complete lack of supporting evidence – then it raises a series of additional welfare issues Government must also deal with, for example:

* All other forms of hunting and fishing that lead to export would need to be re-evaluated,

* Indigenous people hunting with traditional methods such as spears would by default be labeled as grossly in breach of the Federal Government’s new animal welfare standards,

* Government officers having to destroy problem crocodiles for forensic or other purposes would be in breach of the Federal Government’s animal welfare standards.

Filed Under: Uncategorized Tagged With: Plants and Animals

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Jennifer Marohasy Jennifer Marohasy BSc PhD has worked in industry and government. She is currently researching a novel technique for long-range weather forecasting funded by the B. Macfie Family Foundation. Read more

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