ORCID Profile
0000-0001-6663-627X
Current Organisation
Syracuse University
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Publisher: The Royal Society
Date: 10-2019
Abstract: Mammals with dependent young often rely on cryptic behaviour to avoid detection by potential predators. In the mysticetes, large baleen whales, young calves are known to be vulnerable to direct predation from both shark and orca predators therefore, it is possible that mother–calf pairs may show cryptic behaviours to avoid the attention of predators. Baleen whales primarily communicate through low-frequency acoustic signals, which can travel over long ranges. In this study, we explore the potential for acoustic crypsis, a form of cryptic behaviour to avoid predator detection, in North Atlantic right whale mother–calf pairs. We predicted that mother–calf pairs would either show reduced calling rates, reduced call litude or a combination of these behavioural modifications when compared with other demographic groups in the same habitat. Our results show that right whale mother–calf pairs have a strong shift in repertoire usage, significantly reducing the number of higher litude, long-distance communication signals they produced when compared with juvenile and pregnant whales in the same habitat. These observations show that right whale mother–calf pairs rely upon acoustic crypsis, potentially to minimize the risk of acoustic eavesdropping by predators.
Publisher: Elsevier BV
Date: 03-2018
Publisher: Elsevier BV
Date: 04-2016
Publisher: Informa UK Limited
Date: 16-05-2017
Publisher: Springer Science and Business Media LLC
Date: 16-12-2014
DOI: 10.1038/SREP07508
Publisher: The Royal Society
Date: 08-02-2012
Abstract: Baleen whales ( Mysticeti ) communicate using low-frequency acoustic signals. These long-wavelength sounds can be detected over hundreds of kilometres, potentially allowing contact over large distances. Low-frequency noise from large ships (20–200 Hz) overlaps acoustic signals used by baleen whales, and increased levels of underwater noise have been documented in areas with high shipping traffic. Reported responses of whales to increased noise include: habitat displacement, behavioural changes and alterations in the intensity, frequency and intervals of calls. However, it has been unclear whether exposure to noise results in physiological responses that may lead to significant consequences for in iduals or populations. Here, we show that reduced ship traffic in the Bay of Fundy, Canada, following the events of 11 September 2001, resulted in a 6 dB decrease in underwater noise with a significant reduction below 150 Hz. This noise reduction was associated with decreased baseline levels of stress-related faecal hormone metabolites (glucocorticoids) in North Atlantic right whales ( Eubalaena glacialis ). This is the first evidence that exposure to low-frequency ship noise may be associated with chronic stress in whales, and has implications for all baleen whales in heavy ship traffic areas, and for recovery of this endangered right whale population.
Publisher: Inter-Research Science Center
Date: 31-05-2016
DOI: 10.3354/ESR00735
Publisher: Springer New York
Date: 2016
DOI: 10.1007/978-1-4939-2981-8_142
Abstract: The ecological impacts of increasing levels of anthropogenic noise in marine and freshwater systems are of growing public interest. Recent emphasis on the physiological approaches to identifying the impacts of noise has led to increased recognition that anthropogenic noise is an environmental stressor. We briefly review the research on noise-induced physiological stress. Additionally, we summarize findings from a controlled playback experiment that explored the relationship between traffic noise and physiological stress in anurans (frogs and toads), an aquatic group that relies on acoustic communication for survival and reproduction.
Publisher: Acoustical Society of America
Date: 2016
DOI: 10.1121/2.0000247
Publisher: Oxford University Press (OUP)
Date: 18-08-2014
Publisher: Pensoft Publishers
Date: 06-2016
DOI: 10.1665/034.025.0101
Publisher: Springer Science and Business Media LLC
Date: 18-10-2017
DOI: 10.1038/S41598-017-13359-3
Abstract: Given new distribution patterns of the endangered North Atlantic right whale (NARW Eubalaena glacialis ) population in recent years, an improved understanding of spatio-temporal movements are imperative for the conservation of this species. While so far visual data have provided most information on NARW movements, passive acoustic monitoring (PAM) was used in this study in order to better capture year-round NARW presence. This project used PAM data from 2004 to 2014 collected by 19 organizations throughout the western North Atlantic Ocean. Overall, data from 324 recorders (35,600 days) were processed and analyzed using a classification and detection system. Results highlight almost year-round habitat use of the western North Atlantic Ocean, with a decrease in detections in waters off Cape Hatteras, North Carolina in summer and fall. Data collected post 2010 showed an increased NARW presence in the mid-Atlantic region and a simultaneous decrease in the northern Gulf of Maine. In addition, NARWs were widely distributed across most regions throughout winter months. This study demonstrates that a large-scale analysis of PAM data provides significant value to understanding and tracking shifts in large whale movements over long time scales.
Publisher: Wiley
Date: 12-07-2020
DOI: 10.1111/GCB.15191
Publisher: Wiley
Date: 19-10-2018
DOI: 10.1111/ACV.12457
Location: United States of America
No related grants have been discovered for Susan Parks.