The Impact of Hurricanes on the Acoustic Detection of Cetaceans
Passive acoustic monitoring (PAM) is valuable for understanding the presence, behavior, distribution, and population density of marine mammals. While long-term variability of ambient sound is typically evaluated, the impact of short-term variability due to episodic events has not been assessed until...
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ftuninhampshire:oai:scholars.unh.edu:thesis-2619 2023-05-15T17:33:37+02:00 The Impact of Hurricanes on the Acoustic Detection of Cetaceans Tripathy, Aditi 2022-05-01T07:00:00Z application/pdf https://scholars.unh.edu/thesis/1580 https://scholars.unh.edu/cgi/viewcontent.cgi?article=2619&context=thesis unknown University of New Hampshire Scholars' Repository https://scholars.unh.edu/thesis/1580 https://scholars.unh.edu/cgi/viewcontent.cgi?article=2619&context=thesis Master's Theses and Capstones text 2022 ftuninhampshire 2023-01-30T22:45:24Z Passive acoustic monitoring (PAM) is valuable for understanding the presence, behavior, distribution, and population density of marine mammals. While long-term variability of ambient sound is typically evaluated, the impact of short-term variability due to episodic events has not been assessed until now. Hurricanes Dorian (Category 5; 2019), Florence (Category 4; 2018), and Humberto (Category 3; 2019) impacted the soundscape as observed from the passive acoustic data at the Atlantic Deepwater Ecosystem Observatory Network (ADEON) locations in the US Mid- and South Atlantic Outer Continental Shelf. Hurricanes are increasingly prevalent in the North Atlantic and increase the ambient sound level at frequencies > 100 Hz, which may impact the detectability of cetaceans vocalizing at those frequencies. The probability of detection (Pd) of fin whales (low-frequency), minke whales (mid-frequency), and pilot whales (mid- to high frequency) was estimated at each ADEON location. Pd changed considerably during hurricane presence with site-specific impacts for each of the cetaceans, which may affect estimates of their population density from passive acoustic recordings. The findings from this study provide a baseline for impacts of episodic variability of varying intensities on signal detection, and can be translated to additional episodic events and sound sources of interest, to further enhance PAM efforts. Text North Atlantic University of New Hampshire: Scholars Repository Dorian ENVELOPE(-63.497,-63.497,-64.815,-64.815) |
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University of New Hampshire: Scholars Repository |
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ftuninhampshire |
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description |
Passive acoustic monitoring (PAM) is valuable for understanding the presence, behavior, distribution, and population density of marine mammals. While long-term variability of ambient sound is typically evaluated, the impact of short-term variability due to episodic events has not been assessed until now. Hurricanes Dorian (Category 5; 2019), Florence (Category 4; 2018), and Humberto (Category 3; 2019) impacted the soundscape as observed from the passive acoustic data at the Atlantic Deepwater Ecosystem Observatory Network (ADEON) locations in the US Mid- and South Atlantic Outer Continental Shelf. Hurricanes are increasingly prevalent in the North Atlantic and increase the ambient sound level at frequencies > 100 Hz, which may impact the detectability of cetaceans vocalizing at those frequencies. The probability of detection (Pd) of fin whales (low-frequency), minke whales (mid-frequency), and pilot whales (mid- to high frequency) was estimated at each ADEON location. Pd changed considerably during hurricane presence with site-specific impacts for each of the cetaceans, which may affect estimates of their population density from passive acoustic recordings. The findings from this study provide a baseline for impacts of episodic variability of varying intensities on signal detection, and can be translated to additional episodic events and sound sources of interest, to further enhance PAM efforts. |
format |
Text |
author |
Tripathy, Aditi |
spellingShingle |
Tripathy, Aditi The Impact of Hurricanes on the Acoustic Detection of Cetaceans |
author_facet |
Tripathy, Aditi |
author_sort |
Tripathy, Aditi |
title |
The Impact of Hurricanes on the Acoustic Detection of Cetaceans |
title_short |
The Impact of Hurricanes on the Acoustic Detection of Cetaceans |
title_full |
The Impact of Hurricanes on the Acoustic Detection of Cetaceans |
title_fullStr |
The Impact of Hurricanes on the Acoustic Detection of Cetaceans |
title_full_unstemmed |
The Impact of Hurricanes on the Acoustic Detection of Cetaceans |
title_sort |
impact of hurricanes on the acoustic detection of cetaceans |
publisher |
University of New Hampshire Scholars' Repository |
publishDate |
2022 |
url |
https://scholars.unh.edu/thesis/1580 https://scholars.unh.edu/cgi/viewcontent.cgi?article=2619&context=thesis |
long_lat |
ENVELOPE(-63.497,-63.497,-64.815,-64.815) |
geographic |
Dorian |
geographic_facet |
Dorian |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Master's Theses and Capstones |
op_relation |
https://scholars.unh.edu/thesis/1580 https://scholars.unh.edu/cgi/viewcontent.cgi?article=2619&context=thesis |
_version_ |
1766132173097664512 |