Sender: |
|
Date: |
Sun, 30 Jun 2013 17:07:37 -0700 |
Reply-To: |
|
Subject: |
|
MIME-Version: |
1.0 |
Message-ID: |
|
In-Reply-To: |
|
Content-Type: |
text/plain; charset=ISO-8859-1 |
From: |
|
Parts/Attachments: |
|
|
>Moreover, the authors say that diversity decreased at pesticide
> concentrations that European regulations deem environmentally protective.
> "It shows our risk assessments don't work," says Beketov. "I think we
> should care about this because invertebrates are an important part of the
> food web."
There is good science, and poor science. I have not yet reviewed the
paper, but benthic macroinvertebrate diversity decreases in agricultural
drainages independent of pesticides. I'm not saying that pesticides don't
hurt benthic macroinvertebrates (they do), but I have experience in such
sampling. There is a difference between correlation and causality.
What would be of far more interest would be to identify the specific
pesticides that indeed cause loss of benthics--mayflies, stoneflies, and
caddisflies are generally the most sensitive indicator species. Then
better regulate those pesticides, and agricultural runoff.
--
Randy Oliver
Grass Valley, CA
www.ScientificBeekeeping.com
***********************************************
The BEE-L mailing list is powered by L-Soft's renowned
LISTSERV(R) list management software. For more information, go to:
http://www.lsoft.com/LISTSERV-powered.html
|
|
|