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Exploring the impact of offshore wind on whale deaths #ASA187

Some experts are worried wind farm survey noise adds stress and increases whale deaths.

Exploring the impact of offshore wind on whale deaths #ASA187
2024-11-21
(Press-News.org) MELVILLE, N.Y., Nov. 21, 2024 – In the winter of 2022-2023, nearly a dozen whales died off the coast of New Jersey, near the sites of several proposed wind farms. Their deaths prompted concern that related survey work being conducted in the area somehow contributed to their deaths.

Michael Stocker of Ocean Conservation Research will present his work Thursday, Nov. 21, at 3:29 p.m. ET in a session dedicated to examining the circumstances surrounding these whale deaths, as part of the virtual 187th Meeting of the Acoustical Society of America, running Nov. 18-22, 2024.

In pursuit of clean energy goals and to reduce atmospheric carbon emissions, developers are increasingly exploring building wind turbines in the waters off the East Coast of the United States. Three offshore wind farms are already in operation, with several more planned or underway. These wind farms stand to generate a significant amount of carbon-free electricity, which can help coastal states meet their decarbonization goals.

The increased presence of these turbines in coastal waters, along with the noise from construction and surveys, has led to concerns of their impact on marine life. In particular, cetaceans such as whales and dolphins are likely to be sensitive to the noises and increased marine traffic brought by these turbines.

However, the Marine Mammal Commission, a federal oversight agency, states there is no evidence linking the whales that died in the New Jersey region in the winter of 2022-2023 to wind energy development.

According to necropsies performed on recovered whales, many of them died from collisions with ships. The Marine Mammal Commission notes that this is not a particularly unusual occurrence, nor is the number of whale deaths in this period higher than average. A rise in ship strikes over the last decade is mostly due to a simple combination of more whales plus more ships.

“In the case of a lot of whales, population recoveries since the cessation of commercial whaling are coincident with increasing shipping traffic and increasing fishing efforts,” said Stocker. “This is resulting in increased interactions between whales and the industrialization of the ocean.”

Stocker, however, is concerned that the increased presence of survey ships in and around New Jersey waters may have exacerbated this issue.

“Were the ship strikes just a coincidence?” asked Stocker. “Or were they a product of compromised whale vigilance due to aggregated stress factors?”

Survey ships are employed by wind farm developers to map the seafloor in preparation for construction. These ships use underwater acoustic devices in their efforts, which can stress marine mammals such as whales. While one survey ship likely has little effect, Stocker highlights that 11 different surveys were operating in the region from December 2022 to March 2023, and that the cumulative impact of these surveys has not been properly evaluated.

Stocker hopes his Thursday session will spark a discussion among attendees with the goal of identifying approaches to minimize whale deaths in the future.

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Media are invited to attend a virtual press conference about this research and other sessions on Monday, Nov. 18. A full schedule is available at https://acoustics.org/asa-press-conference-schedule-for-monday-nov-18-asa187. To register for virtual press conferences or sessions, email media@aip.org.

———————– MORE MEETING INFORMATION ———————–

​Main Meeting Website: https://acousticalsociety.org/asa-virtual-fall-2024/  
Technical Program: https://eppro01.ativ.me/src/EventPilot/php/express/web/planner.php?id=ASAFALL24

ASA PRESS ROOM

In the coming weeks, ASA’s Press Room will be updated with newsworthy stories and the press conference schedule at https://acoustics.org/asa-press-room/.

LAY LANGUAGE PAPERS

ASA will also share dozens of lay language papers about topics covered at the conference. Lay language papers are summaries (300-500 words) of presentations written by scientists for a general audience. They will be accompanied by photos, audio, and video. Learn more at https://acoustics.org/lay-language-papers/.

PRESS REGISTRATION

ASA will grant free registration to credentialed and professional freelance journalists. If you are a reporter and would like to attend the virtual meeting and/or press conferences, contact AIP Media Services at media@aip.org. For urgent requests, AIP staff can also help with setting up interviews and obtaining images, sound clips, or background information.

ABOUT THE ACOUSTICAL SOCIETY OF AMERICA

The Acoustical Society of America is the premier international scientific society in acoustics devoted to the science and technology of sound. Its 7,000 members worldwide represent a broad spectrum of the study of acoustics. ASA publications include The Journal of the Acoustical Society of America (the world’s leading journal on acoustics), JASA Express Letters, Proceedings of Meetings on Acoustics, Acoustics Today magazine, books, and standards on acoustics. The society also holds two major scientific meetings each year. See https://acousticalsociety.org/.

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Exploring the impact of offshore wind on whale deaths #ASA187

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[Press-News.org] Exploring the impact of offshore wind on whale deaths #ASA187
Some experts are worried wind farm survey noise adds stress and increases whale deaths.