[MARMAM] Marine Mammal Movement and Behavior (3MB) software release
biomimetica at cox.net
Sun Nov 1 18:55:13 PST 2009
Biomimetica is happy to make available the first public release of
its Marine Mammal Movement and Behavior (3MB) software package. The
3MB software is a component of the forthcoming Effects of Sound on
the Marine Environment (ESME) software package.
The 3MB software allows the creation of simulated aquatic species, or
animats. Each animat consists of a series of behavioral states with
probabilities of transition between states that can be modified
according to time of day. Each behavioral state contains controls for
dictating the various components of an animat's dive behavior,
including depth, ascent and descent speed, horizontal rate of travel,
surface time, etc. Animat movements may also be constrained by
bathymetric features and animats can be made responsive to simulated
sound exposures. Furthermore, animats may function as individuals or
be constrained to "pod" behavior.
The 3MB software permits the exploration of species dive behavior and
provides a cursory approach to estimating acoustic impacts to marine
mammals. Simple sound sources are made available in 3MB and a suite
of "aversive" behaviors that are triggered above a threshold response
can be programmed by the user. This permits the exploration of
possible response scenarios to sound exposure, including the
potential for beaching. The 3MB software also provides a "take"
estimate of marine mammals, as defined under the Marine Mammal
Protection Act. The criteria and metrics for estimating "take" are
based on approaches implemented by the National Marine Fisheries
Service and the United States Navy for mid-frequency active sound
sources. However, the criteria and thresholds implemented in 3MB
should not be considered to have the endorsement of either agency and
threshold values may vary in upcoming releases of the software.
The 3MB software package may be obtained from
http://members.cox.net/biomimetica/download%20page.htm. The package
contains the following:
Marine Mammal Movement and Behavior (3MB) executable
Species Builder executable
Bathymetry files (Bahamas, Mid-Atlantic Bight, Southern California Bight)
Sound Source files (one mobile and one stationary sound source)
Species files (a "generic" mysticete and odontocete)
Quick Start Guide
(MatLab scripts for processing 3MB output files are also available at
The 3MB software is free to the public. Its development was made
possible by support from the Office of Naval Research.
If you find bugs or errors in the software, I encourage you to report
them to matthewjancross at gmail.com. Recommendations for feature
enhancement should be sent to biomimetica at cox.net. We will attempt to
address bug-fixes and enhancements in future releases of 3MB.
Dorian S. Houser
Dorian S. Houser, Ph.D.
biomimetica at cox.net
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