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Proceedings of OceanObs'09: Sustained Ocean Observations and Information for Society

COMMUNITY WHITE PAPER10.5270/OceanObs09.cwp.40

Toward a Global Ocean Ecosystem Mid-Trophic Automatic Acoustic Sampler (MAAS)

Nils Olav Handegard(1), David Demer(2), Rudy Kloser(3), Patrick Lehodey(4), Olivier Maury(5), Yvan Simard(6)

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Despite their huge biomass and pivotal role, the mid-trophic levels of marine ecosystems are not generally subject to systematic monitoring. Data from such monitoring is crucial for parameterizing, validating, and constraining numerical models of mid-trophic communities. In recent years, acoustic sampling technology has matured, and we argue that acoustic sampling technology, due to long-range propagation in water, is the only means to efficiently observe the large biomass of the mid-trophic levels at ecologically important temporal and spatial scales. We argue that it is timely to propose a collaborative effort to utilize these new techniques, and we propose to widely deploy automated acoustic recorders, using a variety of platforms, to achieve this goal. Without such large-scale coordinated monitoring, we will continue to lack an understanding of how the effects of climate variability are mediated from primary production up to the higher trophic levels and, conversely, how changes in higher trophic levels may affect the lower trophic levels. The objective of the MAAS (Mid-Tropic Automatic Acoustic Sampler) project is, therefore, to provide near-real-time global-scale monitoring of mid-trophic-level organisms.

1Institute of Marine Research, P.O. Box 1870 Nordnes, 5817 Bergen, Norway
2National Oceanic and Atmospheric Administration's Southwest Fisheries Science Center, 3333 North Torrey Pines Court, La Jolla, CA 92037-1022, USA
3CSIRO (Commonwealth Scientific and Industrial Research Organisation) - Marine and Atmospheric Research, PO Box 1538, Hobart 7001, Australia
4CLS (Collecte Localisation Satellites), MEMMS (Modélisation des Ecosystèmes Marins et Monitoring par Satellites), Département Océanographie Spatiale, 8-10 rue Hermès, 31520, Ramonville, France
5Institute of Marine Research, 44, boulevard de Dunkerque, CS 90009, F-13572 Marseille Cedex 02 France
6Fisheries and Oceans, Canada, Maurice Lamontagne Institute; AND Institute of Marine Sciences, University of Québec at Rimouski, 850 route de la Mer, Mont-Joli, Québec G5H 3Z4 Canada; and 310 Allée des Ursulines, Rimouski, Québec G5L 3A1, Canada

Correspondence should be addressed to E-mail: nilsolav@imr.no

This paper shall be cited as:

Handegard, N. & Co-Authors (2010). "Toward a Global Ocean Ecosystem Mid-Trophic Automatic Acoustic Sampler (MAAS)" in Proceedings of OceanObs’09: Sustained Ocean Observations and Information for Society (Vol. 2), Venice, Italy, 21-25 September 2009, Hall, J., Harrison, D.E. & Stammer, D., Eds., ESA Publication WPP-306, doi:10.5270/OceanObs09.cwp.40

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