Dear Kelly:
Don´t know about the revutal to R. Carson's allegations, but there are
tons of info (I am in the middle of México, a bit far from a library, and so I
am at a disadvantage to give you relevant references ) on estrogen-like
compounds that result from the breakdown of DDT, and that`s the concern with
aquatic organisms, fish, amphibians and reptilians. I do remember a good paper
in American Scientiest a while back if you want a more precise answer.
Kelly Stettner <[EMAIL PROTECTED]> wrote:
Date: Mon, 27 Aug 2007 06:06:18 -0700
From: Kelly Stettner <[EMAIL PROTECTED]>
Subject: [ECOLOG-L] DDT question
To: [email protected]
While I whole-heartedly agree that the larger and long-term picture must be
considered with regards to ecology, I also think that emotional, knee-jerk
reactions need to be tempered with real scientific investigation. Before our
imaginations get too fired up over sensationalism, we need to be responsible
and look at ALL the evidence, not just that which supports our hypothesis.
For some reason, I thought that Rachel Carson's allegation about sea bird
eggshells had been disproven? Can someone point to some of the research on both
sides of the issue? Also, have there been studies on DDT's effects on animals,
through groundwater or as an airborne spray or some other vector?
What are these 'adverse impacts to polar bears and penguins' that you mention?
How does it get there, does it last that long in the upper atmosphere to be
carried to the poles on the wind?
Sex reversal in fish ~ I'd also like to know about studies on this particular
issue, since I've never heard of it, either. Are the fish affected when DDT
moves through groundwater? What happens to DDT when it hits soil or water? Does
it break down into component molecules?
Thank you for considering my questions.
Kelly Stettner
Springfield, Vermont
Black River Action Team (BRAT)
45 Coolidge Road
Springfield, VT 05156
[EMAIL PROTECTED]
http://www.blackriveractionteam.org
~Making ripples on the Black River since 2000! ~
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Terrestrial Plant Ecology
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