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Subject: Download AD Model Builder Now
From: John Sibert <[log in to unmask]>
Reply-To:Scientific forum on fish and fisheries <[log in to unmask]>
Date:Mon, 8 Dec 2008 16:30:20 -1000

text/plain (97 lines)

Fisheries stock assessment software development tools now publicly 

The most widely used software package for the development of 
state-of-the-art fisheries stock assessment methods, AD Model Builder, 
or ADMB, can now be downloaded without charge from a public website,
ADMB-based computer models are used globally to monitor populations of 
many endangered and commercially valuable species, to develop 
place-based resource management policies, and to reconstruct movements 
of animals tracked with electronic tags. ADMB- based stock assessments 
are critical to the management of commercially important fisheries 
stocks worth billions of dollars as well as ecologically sensitive 
species, in the United States and internationally. Every NOAA Fisheries 
Science Center uses the ADMB software.

In 2007, scientists from the University of Hawai’i at Mānoa Pelagic 
Fisheries Research Program and the Inter-American Tropical Tuna 
Commission, in consultation with scientists from NOAA Fisheries, created 
the non-profit ADMB Foundation with the goal of increasing the number of 
ADMB users by making the software free and open source.
During its first year of operation, the UH Pelagic Fisheries Research 
Program provided a home and logistical support for the Foundation. In 
partnership with NOAA Fisheries and the National Center for Ecological 
Analysis and Synthesis (NCEAS), the Foundation drafted a proposal to the 
Gordon and Betty Moore Foundation, to acquire the copyright to the ADMB 
software suite, in order to make it broadly and freely available to the 
research community. A generous grant from the Moore Foundation to NCEAS 
enabled an agreement with Otter Research Ltd. to open the ADMB source.

ADMB has proven to be an essential tool for a wide range of statistical 
analysis, especially in fisheries stock assessments. With its recent 
emergence as free software, it is likely that ADMB will find application 
to a growing number of challenges in ecological modeling.

Many top fisheries scientists have testified to the importance of ADMB 
for creating sound stock and management models:

“Thanks to ADMB, it is no longer necessary to omit or transform data 
because they do not meet the arbitrary assumptions of some ‛canned’ 
software package. Instead, it is possible to include a diversity of data 
in statistical models. This power has revolutionized modeling of natural 
resources.” Dr. John Sibert, Manager, Pelagic Fisheries Research 
Program, University of Hawaii.

“It is no exaggeration to say that the scientific assessment of many 
fisheries would grind to a halt without ADMB. There are hundreds of 
other applications for this tool that will undoubtedly benefit greatly 
by making it a public piece of software.” Professor Ray Hilborn, School 
of Aquatic and Fisheries Sciences, University of Washington.

“ADMB has empowered an entire generation of fishery stock assessment 
scientists.” Dr. Richard Methot, Senior Scientist for Assessments, NOAA 

“Without ADMB, the Inter-American Tropical Tuna Commission would be 
unable to conduct the sophisticated [tuna stock] assessments that it 
currently does.” Dr. Mark Maunder, a Senior Scientist at the 
Inter-American Tropical Tuna Commission.

Creation of the public download web site is only the first step in 
making all aspects of ADMB publicly available. Over the next year, a 
team of software developers will improve documentation of the computer 
code with the goal of making ADMB an open source enterprise. Releases of 
binaries (executable code) for the Windows and Linux operating systems 
are currently freely available, with a port to OS X to follow. 
Ultimately, the full source code will be available, enabling researchers 
to contribute their own enhancements and add-ons, using the code 
repository and support forums established on the ADMB project web site 

More information on ADMB Project and Foundation can be found at and

The Gordon and Betty Moore Foundation, established in 2000, seeks to 
advance environmental conservation and cutting-edge scientific research 
around the world and improve the quality of life in the San Francisco 
Bay Area. For more information, visit

Download ADModel Builder from

In theory, there is no difference between theory and practice. In practice there is. Yogi Berra

John Sibert, Manager
Pelagic Fisheries Research Program
University of Hawaii at Manoa
1000 Pope Road, MSB 313
Honolulu, HI 96822
United States

Phone: (808) 956-4109
Fax: (808) 956-4104
Skype: john.sibert

PFRP Web Site:
email: [log in to unmask]

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