[Rob Pastorok <address@hidden>] Call for Models

[Alex Lancaster]

Of interest to those in the ecological/resource management community
out there...
------- Start of forwarded message -------
Message-Id: <address@hidden>
From: Rob Pastorok <address@hidden>
To: "'address@hidden'" <address@hidden>
Subject: Call for Models
Date: Tue, 22 Jun 1999 16:02:06 -0700


CALL FOR ECOLOGICAL MODELS


The Chemical Manufacturer's Association (CMA) has funded a project to
evaluate ways to improve application of effects-based models in ecological
risk assessment.  The current practice of ecological risk assessment
typically relies on exposure modeling and simple effects-extrapolation
models for individual organisms.  Further development of population,
community, and ecosystem-level models is needed to increase the value of
ecological risk assessments for environmental management.  The objectives of
the CMA project are to:

*       Conduct a critical evaluation of extrapola-tion models, population
models, and eco-system models that are potentially useful for chemical risk
assessment
*       Rank the various candidate models based on evaluation criteria such
as scientific sup-port, regulatory acceptance, state of devel-opment, and
ability to predict relevant assessment endpoints
*       Select the best models and evaluate the feasibility of "validating"
selected models using case study data.

Developers and users of ecological-effects models should send their
suggestions for useful ecological models (excluding models focused on
chemical exposure and fate only) to Dr. Robert Pastorok, Exponent, 15375 SE
30th Place, Suite 250, Bellevue, WA 98007 or via e-mail to
address@hidden  Exponent has teamed with Applied Biomathematics,
Steven Bartell, Ph.D. (Cadmus Group), and S.E. Jørgensen, Ph.D. (Royal
Danish School of Pharmacy) for CMA's project.

If you respond to this request please organize information on your suggested
models as follows:

****************************************************************************
Name of model
Ecosystem type (e.g., field, forest, river, lake, estuary, etc.)
Category / subcategory (see list below)
Analysis level (screening-level or detailed)
Email address
Web site
Contact name and address
Variables predicted or decisions made (e.g., abundance, age structure, patch
occupancy, etc.)
Very brief description
References
****************************************************************************
*

Categories of ecological models to be considered are listed below:

Extrapolations (phenomenological models)
        Uncertainty factors
        Intertaxon regressions
        Inter-endpoint extrapolation
        Endpoint-exposure regressions
        Disease incidence-cluster models
        Species sensitivity distributions
        Quantitative Structure-Activity Relationships (QSARs)

Population-level models
        Classification models
        One-dimensional abundance models
        Harvest models
        Time-series and time-lag models
        Life-history models, including age- and stage-structured matrix
models
        Individual-based models
        Occupancy models, including patch models and cellular automata
        Metapopulation models
        GIS-based or single-species landscape models

Community and ecosystem models
      Biodiversity models
        Index of biotic integrity
        Island biogeography
      Trophic community models
        Predator-prey models
        Food-chain models
        Food-web models
      Single-ecosystem models
        Lake models
        River system models
        Forest stand models, gap models
Oldfield models
      Multispecies landscape models
        Individual-based models
        Watershed models



Rob Pastorok
Exponent Environmental Group
15375 SE 30th Place, Suite 250
Bellevue, WA 98007
phone   425/643-9803  ext. 216
fax        425/643-9827
e-mail   address@hidden



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