Temporal patterns in ambient noise of biological origin from a shallow water temperate reef

Radford, Craig A.; Jeffs, Andrew G.; Tindle, C. T.; Montgomery, John C.

doi:10.1007/s00442-008-1041-y

Cited by 149 publications

(158 citation statements)

References 62 publications

(70 reference statements)

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“…This pattern is opposite to that recorded in temperate reefs, where benthic animals increase sound production during new moon (Radford et al 2008), resulting in a general increase in DP during full moon (How and de Lestang 2012). It is possible that noise production corresponding to time of day and lunar phase can differ depending on the habits of fauna in specific locations.…”

Section: Discussioncontrasting

confidence: 69%

“…This suggests that the impact of the thermocline should be assessed in highly stratified water, especially when the study species moves across the thermocline. Additionally warmer surface temperatures might also stimulate increased activity in ectothermic organisms like snapping shrimps (Radford et al 2008), which would negatively affect DP by producing noise in the tag's frequency range.…”

Section: Discussionmentioning

confidence: 99%

“…Snapping shrimps, in particular, can be the dominant source of background noise in shallow tropical waters (Vijayabaskar and Rajendran 2010) and are found in coral reefs worldwide (Kennedy 2007). They are more active in darker periods like night and new moon, when they are less susceptible to predation (Radford et al 2008) producing noise 2-5 dB higher (Morisaka et al 2005).…”

Section: Introductionmentioning

confidence: 99%

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Topography and biological noise determine acoustic detectability on coral reefs

2013

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Acoustic telemetry is an increasingly common tool for studying the movement patterns, behaviour, and site fidelity of marine organisms, but to accurately interpret acoustic data, the variability, periodicity and range of detectability between acoustic tags and receivers must be understood. The relative and interactive effects of topography with biological and environmental noise have not been quantified on coral reefs. We conduct two long-term range tests (one and four months duration) on two different reef types in the central Red Sea, to determine the relative effect of distance, depth, topography, time of day, wind, lunar phase, sea surface temperature and thermocline on detection probability. Detectability, as expected, declines with increasing distance between tags and receivers, and we find average detection ranges of 530 and 120 m, using V16 and V13 tags respectively, but the topography of the reef can significantly modify this relationship, reducing the range by ~70%, even when tags and receivers are in line-of-sight. Analyses that assume a relationship between distance and detections must therefore be used with care. Nighttime detection range was consistently reduced in both locations and detections varied by lunar phase in the four month test, suggesting a strong influence of biological noise (reducing detection probability up to 30%), notably more influential than other environmental noises, including wind-driven noise, which is normally considered important in open-water environments. Analysis of detections should be corrected in consideration of the diel patterns we find, and range tests or sentinel tags should be used for more than one month to quantify potential changes due to lunar phase. Some studies assume that the most usual factor limiting detection range is weather-related noise; this cannot be extrapolated to coral reefs.

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Section: Discussioncontrasting

confidence: 69%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Topography and biological noise determine acoustic detectability on coral reefs

2013

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“…An early study, based on short, daytime recordings from coral reefs, identified positive correlations between coral cover, fish density, and sound intensity (Kennedy et al, 2010); however, those acoustic records were too brief to account for the high temporal variability in biotic sound production that is found in many locations (Radford et al, 2008;Au et al, 2012;Staaterman et al, 2013). More recent work has identified appreciable variability within and among reefs over longer timescales (Staaterman et al, 2014;.…”

Section: Reef Soundscapes and Biodiversitymentioning

confidence: 99%

Coral reef soundscapes : spatiotemporal variability and links to species assemblages

Kaplan¹

2017

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Coral reefs are biodiverse ecosystems that are at risk of degradation as a result of environmental changes. Reefs are constantly in a state of flux: the resident species assemblages vary considerably in space and time. However, the drivers of this variability are poorly understood. Tracking these changes and studying how coral reefs respond to natural and anthropogenic disturbance can be challenging and costly, particularly for reefs that are located in remote areas. Because many reef animals produce and use sound, recording the ambient soundscape of a reef might be one way to efficiently study these habitats from afar. In this thesis, I develop and apply a suite of acoustics-based tools to characterize the biological and anthropogenic acoustic activity that largely comprises marine soundscapes. First, I investigate links between reef fauna and reef-specific acoustic signatures on coral reefs located in the U.S. Virgin Islands. Second, I compare those findings to a more expansive study that I conducted in Maui, Hawaii, in which the drivers of bioacoustic differences among reefs are explored. Third, I investigate the distances over which sounds of biological origin may travel away from the reef and consider the range within which these acoustic cues might be usable by pelagic larvae in search of a suitable adult habitat. Fourth, I assess the extent to which the presence of vessel noise in shallow-water habitats changes the ambient soundscape. Finally, I present the results of a modeling exercise that questions how ocean noise levels might change over the next two decades as a result of major projected increases in the number and size of and distance traveled by commercial ships. The acoustics-based tools presented here help provide insight into ecosystem function and the extent of human activity in a given habitat. Additionally, these tools can be used to inform an effective regulatory regime to improve coral reef ecosystem management.

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“…in the aphotic zone, at night, or in turbid water). Diel or seasonal periods of increased activity (Lammers et al 2008, Radford et al 2008b or correlations with particular physical conditions (e.g. temperature and salinity) can be tracked by monitoring soundscapes over time (Mann & Grothues 2009).…”

Section: Introductionmentioning

confidence: 99%

Temporal trends in cusk eel sound production at a proposed US wind farm site

Mooney

Mb²,

Izzi³

et al. 2016

Aquat. Biol.

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Many marine organisms produce sound during key life history events. Identifying and tracking these sounds can reveal spatial and temporal patterns of species occurrence and behaviors. We describe the temporal patterns of striped cusk eel Ophidion marginatum calls across approximately 1 yr in Nantucket Sound, MA, USA, the location of a proposed offshore wind energy installation. Stereotyped calls typical of courtship and spawning were detected from April to October with clear diel, monthly, and seasonal patterns. Acoustic energy increased in the evenings and peaked during crepuscular periods, with the dusk call levels typically higher in energy and more rapid in onset than those from near-dawn periods. Increased call energy and substantial overlap of calls during certain periods suggest that many cusk eels were often calling simultaneously. Call energy (measured in energy flux density) peaked in July and patterns followed seasonal changes in sunrise and sunset. Sound levels were high (over 150 dB re 1 µPa 2 s) during the summer, indicating that this cusk eel population is a substantial contributor to the local soundscape. The stereotyped cusk eel signals and clear temporal energy patterns potentially provide a bioacoustic signal that can be used to monitor changes to the local environment and its soundscape.

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Temporal patterns in ambient noise of biological origin from a shallow water temperate reef

Cited by 149 publications

References 62 publications

Topography and biological noise determine acoustic detectability on coral reefs

Topography and biological noise determine acoustic detectability on coral reefs

Coral reef soundscapes : spatiotemporal variability and links to species assemblages

Temporal trends in cusk eel sound production at a proposed US wind farm site

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