Funky_Bunch wrote: perhaps we could buy new zealand and turn that into tassie2 and plant it out lol.
volcboy wrote:I often feel bad commenting on forums like this when I read such disinformation by those whose scientific knowledge is lacking.
Some of the chemicals used in farming for pesticide and herbicide use have been shown to be extremely toxic to human beings (or whatever lab animal they choose to use). If you drink water in catchments where plantations and/or regrowth areas where forest operations have occurred, you run the risk of ingesting these compounds. Many of these compounds have been shown, scientifically, to have significant effects on the biochemistry of the body (i.e. they are carcinogenic, they mimic hormones, they interfere with natural biochemical processes in the body including the structure of DNA and RNA).
Some of the compounds that have been found to be present in catchments in Tasmania (including in town supplies) are introduced by spraying, particularly by the spraying of herbicide and pesticide on plantation or regrowth forestry. The relevant 'authorities' claim that the levels of these chemicals are below 'guidelines'. What people don't understand is that many of the 'guidelines' that the government sets have a few issues:
1. Because the effect of chemicals has never been tested over a significant time period, many chemicals are not tested directly in 'real world' conditions, but have their official guideline levels set based on laboratory only testing of similar chemicals on subject animals (i.e. rats). If you don't think this is a problem, try drinking methanol instead of ethanol, which are closely related (I'm joking, don't try this).
2. The 'safe' level of many toxic chemicals (e.g. mercury and many organic pesticides) is set at 0.005 mg/l or less, or around 10 parts per billion. Most labs in Australia cannot test to this level of accuracy.
3. The 'safe' level is only required to limit the increase in detrimental effects (i.e. increase in cancer rates for carcinogens) within the 95'th percentile. That means, even if the 'safe' level is maintained, based on the research (or otherwise) of the chemical substance, if 5% more people die because of ingestion of the substance, the guidelines would be considered to be met.
If you drink water from a stream or river in a catchment where the water may have been affected by runoff from agriculture or forestry, you need to take this into account. It disappoints me extremely when I read posters in this forum talking about a 'beat up' in the media that shouldn't be believed when this is an issue they don't have the training to understand or they have an personal agenda to push. Especially when they are starting other threads that ask suggest that we should 'keep politics of this forum' in other threads (not that I have mentioned politics at all!). God forbid we might actually have the training to actually approach some level where anybody may have dedicated their lives to learning about an issue to the point that they may approach an 'expert' understanding and be develop their compassion for fellow citizens to a point that encourages them to come forward and voice their concerns.
FWIW, I am a scientist with 20+ years experience, including as an Environmental Scientist managing soil and groundwater contamination issues at transitional industrial sites and teaching earth and chemical sciences at secondary and tertiary levels.
flyfisher wrote:I must ask , if anyone knows the answer, do the plantations HAVE to have all these chemicals o grow successfully?
flyfisher wrote:I think the helicopter which crashed in the n e would not have helped the water in that area.
I must ask , if anyone knows the answer, do the plantations HAVE to have all these chemicals o grow successfully?
ff
Joel wrote:volcboy - Thankyou for your information based on on science, rather than the hunches and mis-information provided by others. Why comment if you have done no research, haven't watched the show mentioned and have no scientific background or knowledge on the subject?
Robbo wrote:flyfisher wrote:
Answer to all this? I don't have one except to say the problem lies with all of us not just 'them'...
In the 70's, for those who are able, or wish, to remember back that far, a group called Supertramp released a song that included these words:
Who are these men of lust, greed, and glory?
Rip off the masks and let's see.
But that's not right - oh no, what's the story?
But, there's you and there's me…
TR
I wondered about that too, but if I was living in St Helens I wouldn't be drinking the water, you don't get clusters of rare cancers and immune system diseases without some reason.corvus wrote:As stated before if the water is polluted it must be fixed however the drinking water in this instance is sourced well under the foam that was tested
corvus
corvus wrote:Wow an expert Scientist working for whom ?? I am the devils advocate asking for real proof as I believe animals still live and survive in those waters![]()
corvus
Taurë-rana wrote:I wondered about that too, but if I was living in St Helens I wouldn't be drinking the water, you don't get clusters of rare cancers and immune system diseases without some reason.
sthughes wrote:So we're all gonna die from Gum tree poisoning! What an Australian way to go out!![]()
Okay so we've identified a potential problem, surely there is some way (short of banning plantation forests and ripping out the trees) that any potential risk can be minimised? For example inducing the water to froth, then removing it. Or perhaps introducing buffer zones around waterways (really should have these anyway).
Would it not be a very simple experiment to see if this "toxic" water is behind the Oyster issues. In a lab simply stick some in "toxic" water and some in "clean" water and see what happens?
I think a bit more science is needed before we start getting too panicked. It's just a shame the government is too one eyed about forestry to even consider funding it.
Brett wrote:Congratulations the likely cause appears to have been found. Can people that blamed the government and industry in a conspiracy theory of covering up spraying problems please have the common decency to apologise.
.Tasmanian Aquaculture and Fisheries Institute, have recently undertaken an
analysis of the Georges Bay area, see the report online
http://eprints.utas.edu.au/6768/.
• The Department of Primary Industries Water and Environment, have
extensively studied the Georges Bay Area and the issue of Oyster Health. See
report at http://www.dpiw.tas.gov.au/inter.nsf/Publications/LBUN-
63H354?open
The AS story was biased in the extreme and only questions their own motives
stepbystep wrote:
How about some congratulations for those that pursued this at great personal risk.
sthughes wrote:I wish Greenies and big business/major parties could work together more, it would serve them both much better.
Brett wrote: I have sat on the other side of a table wrangling money from Paul Lennon and while I can say many things about him (and did to his face) I can not believe that he would compromise people safety. You are looking at a person that despite huge lobbying hammered through smoke free pubs, while being a smoker himself.
Users browsing this forum: No registered users and 13 guests