None flew over the cuckoo's nest: A world without birds

[Laurie Knight <>]

For interested ecologists ...



http://www.disasterinthemaking.com/content.html


The Systematic Insecticides: A Disaster in the Making

Content
Preface             4

Index             6

The use of neo-nicotinoid insecticides             9

Contamination of Dutch surface water with imidacloprid             13

The potential toxicity to insects and other arthropods of Dutch
surface water contaminated with imidacloprid             17

The decline of invertebrate-dependent Dutch meadow birds             25

The decline of invertebrate-dependent Dutch marsh birds             31

The decline of invertebrate-dependent bird species on Dutch heath
land             37

The decline of invertebrate-dependent bird species at the Dutch
coast             41

The decline of invertebrate-dependent woodland birds in Britain,
France and Germany             49

The decline of invertebrate-dependent farmland birds in Britain, the
Low Countries, Germany, Switzerland, and France             53

The decline of invertebrate-dependent birds in settlements in Britain,  
France, Germany and Switzerland             61
The decline of invertebrate-dependent birds in alpine regions of
France, Germany and Switzerland             67

Conclusions             70

Artwork             72



Related Research


The significance of the Druckrey-Küpfmüller equation for risk
assessment--the toxicity of neonicotinoid insecticides to arthropods
is reinforced by exposure time.
Tennekes HA.

Toxicology. 2010 Sep 30;276(1):1-4.


Abstract
The essence of the Druckrey-Küpfmüller equation dtn = constant (where
d = daily dose and t = exposure time-to-effect, with n > 1) for
chemical carcinogens is that the total dose required to produce the
same effect decreases with decreasing exposure levels, even though the  
exposure times required to produce the same effect increase with
decreasing exposure levels. Druckrey and Küpfmüller inferred that if 
both receptor binding and the effect are irreversible, exposure time
would reinforce the effect. The Druckrey-Küpfmüller equation explains
why toxicity may occur after prolonged exposure to very low toxicant
levels. Recently, similar dose-response characteristics have been
established for the toxicity of the neonicotinoid insecticides
imidacloprid and thiacloprid to arthropods. This observation is highly  
relevant for environmental risk assessment. Traditional approaches
that consider toxic effects at fixed exposure times are unable to
allow extrapolation from measured endpoints to effects that may occur  
at other times of exposure. Time-to-effect approaches that provide
information on the doses and exposure times needed to produce toxic
effects on tested organisms are required for prediction of toxic
effects for any combination of concentration and time in the
environment.

On 16/11/2010, at 6:22 AM, Laurie Knight wrote:

> Move over DDT.  See 
> http://www.independent.co.uk/environment/nature/none-flew-over-the-cuckoos-nest-a-world-without-birds-2134031.html
>  <usual caveats regarding journalism apply>
> ===============================
>
> To unsubscribe from this mailing list,send the message:
> unsubscribe(in the body of the message, with no Subject line)
> to: 
>
> http://birding-aus.org
> ===============================
==============================
To unsubscribe from this mailing list,
send the message:
unsubscribe
(in the body of the message, with no Subject line)
to: 

http://birding-aus.org
=============================