[MARMAM] New publication: Marine Soundscape Planning

Ilse Van Opzeeland ilse.van.opzeeland at awi.de
Wed Apr 4 00:56:23 PDT 2018

Dear colleagues,

We are pleased to announce the publication of our paper in the Journal 
of Ecoacoustics, titled Marine soundscape planning: Seeking acoustic
niches for anthropogenic sound.


Both marine mammals and hydroacoustic instruments employ underwater 
sound to communicate, navigate or infer information
about the marine environment. Concurrent timing of acoustic activities 
using similar frequency regimes may result in
(potentially mutual) interference of acoustic signals when both sources 
are within audible range of the recipient. While marine
mammal fitness might be negatively impacted upon, both on individual and 
population level, hydroacoustic studies may
generate low quality data or suffer data loss as a result of bioacoustic 
interference. This article pursues, in analogy to landscape
planning, the concept of marine soundscape planning to reconcile 
potentially competing uses of acoustic space by
managing the anthropogenic sound sources. We here present a conceptual 
framework exploring the potential of soundscape
planning in reducing (mutual) acoustic interference between 
hydroacoustic instrumentation and marine mammals. The basis
of this framework is formed by the various mechanisms by which acoustic 
niche formation (i.e., the partitioning of the
acoustic space) occurs in species-rich communities that acoustically 
coexist while maintaining high fidelity (hi-fi)
soundscapes, i.e., by acoustically partitioning the environment on the 
basis of time, space, frequency and signal structure.
Hydroacoustic measurements often exhibit certain flexibility in their 
timing, and even instrument positioning, potentially offering
the opportunity to minimize the ecological imprint of their operation. 
This study explores how the principle of acoustic
niches could contribute to reduce potential (mutual) acoustic 
interference based on actual acoustic data from three recording
locations in polar oceans. By employing marine soundscape planning 
strategies, entailing shifting the timing or position of
hydroacoustic experiments, or adapting signal structure or frequency, we 
exemplify the potential efficacy of smart planning
for four different hydroacoustic instrumentation types: multibeam 
echosounders, air guns, RAFOS (Ranging and Fixing of
Sound) and tomographic sound sources.

The article is published under an open access license and can be 
accessed here: https://doi.org/10.22261/JEA.5GSNT8.

Best Regards,

Ilse Van Opzeeland

Dr I.C. Van Opzeeland
Ocean Acoustics Lab
Alfred Wegener Institute
Helmholtz Centre for Polar
and Marine Research

Am Alten Hafen 26
27568 Bremerhaven
(+49)(0)471 4831 1169
ilse.van.opzeeland at awi.de

More information about the MARMAM mailing list