Monitoring ship noise to assess the impact of coastal developments on marine mammals.

The potential impacts of underwater noise on marine mammals are widely recognised, but uncertainty over variability in baseline noise levels often constrains efforts to manage these impacts. This paper characterises natural and anthropogenic contributors to underwater noise at two sites in the Moray Firth Special Area of Conservation, an important marine mammal habitat that may be exposed to increased shipping activity from proposed offshore energy developments. We aimed to establish a pre-development baseline, and to develop ship noise monitoring methods using Automatic Identification System (AIS) and time-lapse video to record trends in noise levels and shipping activity. Our results detail the noise levels currently experienced by a locally protected bottlenose dolphin population, explore the relationship between broadband sound exposure levels and the indicators proposed in response to the EU Marine Strategy Framework Directive, and provide a ship noise assessment toolkit which can be applied in other coastal marine environments.

[1]  Nathan D. Merchant,et al.  Averaging underwater noise levels for environmental assessment of shipping. , 2012, The Journal of the Acoustical Society of America.

[2]  E Sorensen,et al.  Small vessel contribution to underwater noise , 2010, OCEANS 2010 MTS/IEEE SEATTLE.

[3]  A. Foote,et al.  Environment: Whale-call response to masking boat noise , 2004, Nature.

[4]  H. Melling,et al.  Comparing marine mammal acoustic habitats in Atlantic and Pacific sectors of the High Arctic: year-long records from Fram Strait and the Chukchi Plateau , 2012, Polar Biology.

[5]  In Sarasota Bay,et al.  EFFECTS OF WATERCRAFT NOISE ON THE ACOUSTIC BEHAVIOR OF BOTTLENOSE DOLPHINS, TURSIOPS TR UNCATUS, , 2004 .

[6]  D. Lusseau,et al.  Effects of tourist boats on the behaviour of Indo-Pacific bottlenose dolphins off the south coast of Zanzibar. , 2010 .

[7]  J. Hildebrand,et al.  Increases in deep ocean ambient noise in the Northeast Pacific west of San Nicolas Island, California. , 2006, The Journal of the Acoustical Society of America.

[8]  Werner Stefanie,et al.  Marine Strategy Framework Directive - Task Group 11 Report Underwater Noise and Other Forms of Energy , 2010 .

[9]  J. Hildebrand,et al.  Underwater radiated noise from modern commercial ships. , 2012, The Journal of the Acoustical Society of America.

[10]  K. Macleod.  Atlas of cetacean distribution in North-West European waters, compiled and edited by James B. Reid, Peter G. H. Evans and Simon P. Northridge. Joint Nature Conservation Committee, Peterborough, 2003, 76 pp. Price £17.00. , 2004 .

[11]  P. Thompson,et al.  Effect of oceanographic features on fine-scale foraging movements of bottlenose dolphins , 2010 .

[12]  Barry Ma,et al.  Passive acoustic detection and measurement of rainfall at sea , 2005 .

[13]  A. Frankel,et al.  A New Context‐Based Approach to Assess Marine Mammal Behavioral Responses to Anthropogenic Sounds , 2012, Conservation biology : the journal of the Society for Conservation Biology.

[14]  David Lusseau,et al.  Do Marine Mammals Experience Stress Related to Anthropogenic Noise , 2007 .

[15]  P. Thompson,et al.  Integrating multiple data sources to assess the distribution and abundance of bottlenose dolphins Tursiops truncatus in Scottish waters , 2013 .

[16]  Alexander O. MacGillivray,et al.  Mapping cumulative noise from shipping to inform marine spatial planning. , 2012, The Journal of the Acoustical Society of America.

[17]  Peter I. Miller,et al.  Scale-dependent foraging ecology of a marine top predator modelled using passive acoustic data , 2014 .

[18]  R. Reeves,et al.  Narwhals and seismic exploration: Is seismic noise increasing the risk of ice entrapments? , 2013 .

[19]  D. Lusseau.  Effects of Tour Boats on the Behavior of Bottlenose Dolphins: Using Markov Chains to Model Anthropogenic Impacts , 2003 .

[20]  M. Strasberg.  Nonacoustic noise interference in measurements of infrasonic ambient noise , 1979 .

[21]  C. Erbe.  UNDERWATER NOISE OF WHALE‐WATCHING BOATS AND POTENTIAL EFFECTS ON KILLER WHALES (ORCINUS ORCA), BASED ON AN ACOUSTIC IMPACT MODEL , 2002 .

[22]  D. Bain,et al.  Behavioural responses of killer whales (Orcinus orca) to whale‐watching boats: opportunistic observations and experimental approaches , 2006 .

[23]  Michael B. Porter,et al.  Computational Ocean Acoustics , 1994 .

[24]  J. Hildebrand.  Anthropogenic and natural sources of ambient noise in the ocean , 2009 .

[25]  Paul M. Thompson,et al.  Functional mechanisms underlying cetacean distribution patterns: hotspots for bottlenose dolphins are linked to foraging , 2004 .

[26]  Mark P. Johnson,et al.  Vessel noise effects on delphinid communication , 2009 .

[27]  V. Janik.  Source levels and the estimated active space of bottlenose dolphin (Tursiops truncatus) whistles in the Moray Firth, Scotland , 2000, Journal of Comparative Physiology A.

[28]  Nathan D. Merchant,et al.  Assessing sound exposure from shipping in coastal waters using a single hydrophone and Automatic Identification System (AIS) data. , 2012, Marine Pollution Bulletin.

[29]  P. Welch.  The use of fast Fourier transform for the estimation of power spectra: A method based on time averaging over short, modified periodograms , 1967 .

[30]  B. Howe,et al.  Ocean ambient sound: Comparing the 1960s with the 1990s for a receiver off the California coast , 2002 .

[31]  P. Thorne.  Laboratory and marine measurements on the acoustic detection of sediment transport , 1986 .

[32]  Peter L. Tyack,et al.  Implications for marine mammals of large-scale changes in the marine acoustic environment , 2008 .

[33]  W. M. Carey,et al.  Low-frequency wind-generated ambient noise source levels , 1988 .

[34]  Kara C. Buckstaff.  EFFECTS OF WATERCRAFT NOISE ON THE ACOUSTIC BEHAVIOR OF BOTTLENOSE DOLPHINS, TURSIOPS TRUNCATUS, IN SARASOTA BAY, FLORIDA , 2004 .

[35]  G. Frisk.  Noiseonomics: The relationship between ambient noise levels in the sea and global economic trends , 2012, Scientific Reports.

[36]  W. Richardson.  Marine Mammals and Noise , 1995 .

[37]  S. Wiggins,et al.  Ocean noise in the tropical and subtropical Pacific Ocean. , 2013, The Journal of the Acoustical Society of America.

[38]  D. Ponirakis,et al.  Acoustic quality of critical habitats for three threatened whale populations , 2014 .

[39]  Paul M. Thompson,et al.  The Moray Firth Seal Management Plan: an adaptive framework for balancing the conservation of seals, salmon, fisheries and wildlife tourism in the UK , 2008 .

[40]  P. Tyack,et al.  Responses of cetaceans to anthropogenic noise , 2007 .

[41]  S. Wasser,et al.  Evidence that ship noise increases stress in right whales , 2012, Proceedings of the Royal Society B: Biological Sciences.

[42]  P. E. Nachtigall,et al.  MARINE MAMMAL NOISE-EXPOSURE CRITERIA: INITIAL SCIENTIFIC RECOMMENDATIONS , 2008 .

[43]  Brian Polagye,et al.  A vessel noise budget for Admiralty Inlet, Puget Sound, Washington (USA). , 2012, The Journal of the Acoustical Society of America.

[44]  C. Clark,et al.  Short- and long-term changes in right whale calling behavior: the potential effects of noise on acoustic communication. , 2007, The Journal of the Acoustical Society of America.

[45]  Robert D. McCauley,et al.  ANTHROPOGENIC SOUND: EFFECTS ON THE BEHAVIOR AND PHYSIOLOGY OF FISHES , 2003 .

[46]  James S. Clark,et al.  Modelling the biological significance of behavioural change in coastal bottlenose dolphins in response to disturbance , 2013 .

[47]  Arveson,et al.  Radiated noise characteristics of a modern cargo ship , 2000, The Journal of the Acoustical Society of America.

[48]  N. Chapman,et al.  Low frequency deep ocean ambient noise trend in the Northeast Pacific Ocean. , 2011, The Journal of the Acoustical Society of America.

[49]  Whitlow W. L. Au,et al.  The Sonar of Dolphins , 1993, Springer New York.

[50]  Adam S Frankel,et al.  Quantifying Loss of Acoustic Communication Space for Right Whales in and around a U.S. National Marine Sanctuary , 2012, Conservation biology : the journal of the Society for Conservation Biology.

[51]  Enrico Pirotta,et al.  Spectral probability density as a tool for ambient noise analysis. , 2013, The Journal of the Acoustical Society of America.

[52]  B. Polagye,et al.  Sediment-generated noise and bed stress in a tidal channel , 2013 .

[53]  G. M. Wenz.  Acoustic Ambient Noise in the Ocean: Spectra and Sources , 1962 .

[54]  C. Clark,et al.  Acoustic masking in marine ecosystems: intuitions, analysis, and implication , 2009 .