Anni has published a comment on the latest David Attenborough series of TV programs, called "Life in the Undergrowth". Specifically she wrote about
Episode 3: "The Silk Spinners", about spiders. Anni, being Anni, of course, wrote about the music in the program, as much as its visual content. But she acknowledged that the photography and the research was fantastic. I agree with her on that point. Of course, my only comment on the music was that I was oblivious of it, which for me, means it was a successful sound track. But I shall listen for the music tonight. (Sunday. ABC TV 7:30 pm)
She illustrated her comment with a nice photo of a Huntsman Spider inside her house, with a hand in frame, as a nice scale reference. Anni was debating whether Huntsmen Spiders use webs to catch their prey? She did not think so. I can assure her that they do not. They are stalkers of their prey, with excellent eye sight, and great agility.
Robertson residents all have "pet" huntsmen around the place - it goes with the territory. Rather, we are within their territory. My daughter Zoe, who has just moved to Robertson, has not yet learnt this fact, but I'm giving her time to adjust.
Anyway, while not wanting to compete with Anni's nice photo of a Huntsman Spider, I thought I might complement her "clean" photo with a "messy action shot". This large Huntsman (Genus: Isopeda or Isopedella) was on the outside of my kitchen window last year, and it had just caught and devoured a Hawk Moth (Family: Sphingidae)
Moths have fine scales covering virtually all their wings and their bodies, and clearly, from the "dust" all over the window, in this photo, there had been a very heavy struggle. The "dust" on the glass is from the moth's scales, shed as it fought off the spider, unsuccessfully. The particular Hawk Moths which were around Robertson, back in November, when I took this photo, have a rusty red colour to them, the colour of the "dust" on the window.
From the marks on the window, I was able to measure this spider (after it had left) for it did not like me photographing it this closely, as being 3.5 cm long (in the body) and 11 cm across in the legs. As a matter of interest, there is the faint reflection of an upside down "bottlebrush" (the cleaning implement, not the flower) in the window, which might help give you a scale reference.
For the record, I have since cleaned the window.
Consider this, though, not only can a Huntsman Spider walk over a vertical sheet of glass, it can trap a moth (from the markings on the window, a large moth) and kill it there on the pane of glass, without losing its grip.
How successful is that, as a hunting technique? An appropriate name for a hunting spider, eh? They are stalkers of their prey, and have excellent eye sight, and great agility.
The web page linked here suggests that spiders with the ability to climb on extremely smooth surfaces, such as on glass, (and not all have that ability) can do so because of their extremely fine hairs on their legs which can adhere to the faintest trace of water on that smooth surface (scroll down to the 60 power magnigfication photo of a spider's leg, on that website). Basically, they are using the surface tension of the film of water on which to walk. At night, in Robertson, just about any window pane will have a film of moisture on it. So that explanation makes sense to me.
It is refreshing to write about the creepy-crawly parts of the Nature of Robertson, rather than its politics, for once. I thank Anni for the inspiration to do that.
SYDNEY'S PLUNDERING OF OUR DEEP AQUIFERS
Robertson School of Arts
12.30pm, 4th March 2006
Address by Jonathan Bell,
Chairman,
New South Wales Farmers' Association Sydney Water Catchment Taskforce
My name is Jonathan Bell.
We breed and fatten Angus cattle at Glenquarry. Very close to here. Our property, originally a dairy farm, is fundamentally, and has always traditionally been, dependant on the aquifer that keeps our springs flowing.
The wonderful creeks in our area, many of them carrying the highest environmental classification under the Environment Protection Act, the 'S' classification, are spring fed. That is to say, they are dependant on the aquifer that keeps our springs flowing.
We have had two bores drilled by the Sydney Catchment Authority in very close proximity to our land ~ one less than 100 meters away. The other some 150 meters away.
We have been very concerned by this bore drilling activity in this general area for some time and have been in correspondence with Mr Tony Collins, Program Director, Metropolitan Water Plan for the Sydney Catchment Authority. We have been seeking a formal covenant or agreement with the NSW government ~ an agreement that will run with the title to our land ~ that, in the event that the proposed use of the deep aquifers to provide Sydney with water deleteriously affects our traditional water supplies, that we will be granted access to surface water supplies controlled by the government in the immediate vicinity of our property.
Not an unreasonable request you might say.
The government is not coming to the party. I am told that my worries are ill founded and premature.
Well, if our worries are ill founded, why has not the government said to us that they will sign such a covenant? The government would have nothing to lose. But no such offer is being made. This is all very alarming indeed.
As some of you know, I have a long history of involvement with the New South Wales Farmers' Association. I have continuously held elected office in that Association for the past 32 years.
I am currently the President of the Moss Vale Branch of the Association.
I also currently serve (and have done so for a number of years) as an elected member of the Executive Council of the Association.
I am also the Chairman of the NSWFA Sydney Water Catchment Task Force which was set up by the then President of the Association, Mal Peters, following upon the 1998 Sydney water quality scare. It is for this reason that Peta Seaton invited me to speak to the meeting today.
I congratulate the initiative of Peta Seaton in calling this meeting today. Peta is doing a great job in representing all members of her constituency no matter on which side of the political fence they stand. She is a good listener and a hard and effective worker who empathises very closely with the vital concerns of those whom she represents in our NSW state parliament. Well done Peta ~ we are very lucky to have you.
My involvement with the NSWFA Sydney Water Catchment Taskforce arose out of the following saga of events which most of you will recall very clearly:
· On 21st July 1998 Sydney Water informed the NSW Health Dept that Cryptosporodium and Giardia were present in the Sydney Drinking Water Supply in quantities large enough to cause concern for human health.
· On 26th July 1998 the government issued a “boiled water alert” and indicated that Sydney's Drinking Water posed a risk to health and in the case of immuno-suppressed individuals the possibility of death. Citizens were informed to boil all drinking water prior to ingestion. This alert continued until 4th August 1998.
· A second “contamination” occurred on 24th August 1998 which instigated second boil water alert. This was followed by a third on the 5th September 1998, when a two-week boil water alert was put in place.
· On 11 September, Cryptosporodium and Giardia were reported at six water treatment plants as at high levels although no boiled water alert was issued. The reason given was that the laboratories had misidentified the organisms. Their methods, were deficient, quality assurance failed, erroneous data was generated and misinterpreted.
All the above assertions are substantiated by the McClelland QC Enquiry and are on the public record. It is also a matter of record that no person in Sydney became ill as the result of drinking water during the crisis.
As is known, the public were terrified by the alleged “crisis”. It was in this atmosphere that the government made a knee jerk reaction to the McClelland QC Enquiry that identified the failures in laboratory work etc… but failed to criticize the NSW government's response to the “crisis”. The unedifying result of all of this was that the government's attempt to appease the population resulted in splitting Sydney Water in two, leading to the formation of the Sydney Catchment Authority.
It was in this environment that the government proposed to saddle the vast Sydney Water Catchment with the draconian Regional Environmental Plan Mk I. It was to represent the interests of farmers within that vast catchment in dealing with this piece of draconian beaureucratic nonsense that Mal Peters set up our Taskforce.
The work of the Taskforce over a long period has seen two re-drafts of the Draft Regional Environmental Plan with a third soon to be released.
I think it fair to say that we are very hopeful that Mk III of the Plan will deliver a document that we can all live and work with. Our Taskforce stands by to see that this is so.
Then on Wednesday, February 8th February 2006 came the bombshell for this Southern Highlands region.
On that day, Premier Iemma announced that the deeply unpopular $500 million desalination plant had been shelved indefinitely following the discovery of two deep groundwater sources in Sydney's west and down here in this very area where we are meeting today.
The announcement stated that the sources found underneath the Nepean River catchment are extensive enough to provide up to 30 billion litres of water a year for the next three to four years.
That is to say it will provide almost the same amount of water on a daily basis as the desalination plant.
It is the serious public alarm and concern that this announcement has caused that has brought us here today. These concerns are not idly held. I raised my own concerns and some specific questions with an eminent scientist who had this to say to me:
The NSWFA has pledged to play a full part with all the citizens of this community to have this very dangerous and ill thought out proposal by the Iemma Government reversed
Our current President of NSWFA, Jock Laurie, has extended the terms of reference of our NSWFA Task Force so that we can effectively fight this issue. We are now preparing a detailed brief, addressing the scientific issues raised, and pledge here today to work with this entire community to see that common sense and 'a fair go' prevail on this issue.
NSWFA believes the strategy announced by Premier Iemma on February 8th 2006 is deeply floored in that it puts the cart before the horse in a most worrying and irrational manner.
The 2004 Metropolitan Water Plan (Meeting the challenges. Securing Sydney's water future) states that, "It is a balancing act between having enough water in the short term and ensuring we manage our water resources sustainably in the longer term."
NSWFA does not agree with this. We say that it makes more sense in today's context to manage our waters sustainably in the short term so as to ensure enough water in the longer term.
We say that, instead of encouraging the population of Sydney to believe they can use as much water as they want, the government would be better advised to concentrate an intensive public education program to encourage households to use no more drinking water than they need to sustain household health, to encourage industries to use recycled water to sustain the health of their industries, and to discharge the recycled surplus back into the rivers to sustain the health of the rivers and estuaries.
The issue of recycling is the big sleeper in all of this. Many other major cities in Australia and throughout the western world, with the assistance of state of the art recycling and purification plants have adopted this option to secure their water needs.
NSWFA sees it as the major challenge to successfully advocate this recycling option to those who occupy the Treasury Benches in Macquarie Street.
So where do we start and how can we all, as individuals play, a part:
Our area is rich in talent and expertise of many different kinds. I would love to see our Council foster and encourage these rich talents to come together for the good of the whole community on the important aquifer issue. The benefits of combined wisdom can never be over-estimated in my opinion.
On behalf of our NSWFA President, Jock Laurie, I have been requested to say to all present here today that NSWFA will not be found wanting when the whips are cracking on this issue. We regard it as a vitally important issue confronting this community. We will be vitally involved with you on this one and would be very happy to serve on any Community Advisory Group that may be set up, if invited to do so.