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To: All

To entice you to read what I posted on reply #60, here is the section on the bald eagle:


VII. Bald eagles

DDT was blamed for the decline in the bald eagle population.

Bald eagles were reportedly threatened with extinction in 1921 -- 25 years before widespread use of DDT.

[Van Name, WG. 1921. Ecology 2:76]

Alaska paid over $100,000 in bounties for 115,000 bald eagles between 1917 and 1942.

[Anon. Science News Letter, July 3, 1943]

The bald eagle had vanished from New England by 1937.

[Bent, AC. 1937. Raptorial Birds of America. US National Museum Bull 167:321-349]

After 15 years of heavy and widespread usage of DDT, Audubon Society ornithologists counted 25 percent more eagles per observer in 1960 than during the pre-DDT 1941 bird census.

[Marvin, PH. 1964 Birds on the rise. Bull Entomol Soc Amer 10(3):184-186; Wurster, CF. 1969 Congressional Record S4599, May 5, 1969; Anon. 1942. The 42nd Annual Christmas Bird Census. Audubon Magazine 44:1-75 (Jan/Feb 1942; Cruickshank, AD (Editor). 1961. The 61st Annual Christmas Bird Census. Audubon Field Notes 15(2):84-300; White-Stevens, R.. 1972. Statistical analyses of Audubon Christmas Bird censuses. Letter to New York Times, August 15, 1972]

No significant correlation between DDE residues and shell thickness was reported in a large series of bald eagle eggs.

[Postupalsky, S. 1971. (DDE residues and shell thickness). Canadian Wildlife Service manuscript, April 8, 1971]

Thickness of eggshells from Florida, Maine and Wisconsin was found to not be correlated with DDT residues.


61 posted on 12/08/2005 11:58:53 AM PST by GatĂșn(CraigIsaMangoTreeLawyer)
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To: GatĂșn(CraigIsaMangoTreeLawyer)
DDT was not banned for Malaria control.

I also encourage you to read some of the articles cited at junkscience. Some of their points are misinterpreted and ignore a lot of valid research that contradicts their carefully selected papers (checkout their disclaimer on the DDT death watch, LOL). The truth is we do not fully understand the effects of DDT but there are some pretty alarming correlates with DDT use. To ignore them, well, is ignorant.

Again let me state I am all for responsible use of DDT- though those who claim DDT is completely safe and harmless are doing a disservice by masking the facts.

64 posted on 12/08/2005 12:19:30 PM PST by GreenFreeper (Not blind opposition to progress, but opposition to blind progress)
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