WORKSHOP ON MULTIVARIATE STATISTICAL ANALYSIS IN ECOTOXICOLOGY

Tim Kedwards tim.t.j.kedwards at gbjha.zeneca.com
Fri Jul 5 01:04:47 EST 1996


Please find attached below details of the forthcoming workshop. If you 
require any further 
information feel free to contact me directly.

Regards,

Tim



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Dr Tim Kedwards
ZENECA Agrochemicals
Ecological Risk Assessment Section
Jealott's Hill Research Station
Bracknell, UK
RG42 6ET

Tel:            +44 (0) 1344 414107
Fax:            +44 (0) 1344 414124
Email:          Tim.T.J.Kedwards at gbjha.zeneca.com
Disclaimer:-    'The opinions expressed herein are my personal opinions
                and do not necessarily represent those of my employer'

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~



A WORKSHOP ON MULTIVARIATE STATISTICAL ANALYSIS IN ECOTOXICOLOGY

Saturday, 16 November 1996, 8:30 - 5:30, Washington Hilton and Towers
Presented in conjunction with the SETAC 17th Annual Meeting, 
Washington, D.C.

Introduction
Frameworks for ecological risk assessment often culminate in the 
evaluation of effects under simulated or actual environmental conditions.
 A fundamental objective of such semi-field and field studies is to 
investigate
effects at the community and ecosystem level.  To this end, data are 
collected on 
a large number of  ecological variables, including manipulative 
experiments (artificial
streams, mesocosms, terrestrial field trials), environmental monitoring 
(before/after,
upstream/downstream), and ecological surveys (plants, bird census).

Data from these studies are usually evaluated by using univariate 
statistics (e.g. analysis of variance, concentration-response 
regression).  These have 
limitations because it is only possible to look at a limited number of 
variables 
within the ecosystem at any one time, limiting effects determination to 
the 
population level, whereas the objective is normally to understand effects 
at higher 
levels of organization.

The advent of greater computing power and recent developments of new 
multivariate statistical tools has made available a variety of techniques 
(e.g. 
CANOCO, RIFFLE, PRIMER) with the potential to overcome some of these 
previous 
limitations.  Consequently, there is growing interest among 
ecotoxicologists in 
applying such techniques to field studies in order to be able to generate 
true 
community and ecosystem endpoints.  This workshop will provide an 
excellent 
opportunity for interested individuals to meet and exchange views on 
these approaches
and allow developers of the statistical approaches to discuss the 
development and
application of the techniques.  

The objective of this workshop is to provide information on and  generate 
discussion
of multivariate statistical techniques in ecotoxicological field studies, 
focusing on the
application of techniques for generating community and ecosystem level 
statistics,
rather than mathematical derivation.

Attendance will be limited to 100 people to maximize information 
exchange. 
Registration is first-come, first served.  The registration fee is 
$255, and forms can be obtained from the SETAC Office.

Workshop proceedings will be provided to all registrants at no 
additional cost, and will be available for purchase by others after the 
workshop.

                         SETAC Office
                    1010 North 12th Avenue
                   Pensacola, Florida  32501
     T 904-469-1500    F 904-469-9778    E setac at setac.org
                     http://www.setac.org






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