Emmanuelle Leroy

Postdoctoral Research Fellow
Research Activities

I am interested in cetacean acoustics, and especially in large baleen whale vocalizations. I focus my research on long-term and fixed passive acoustic observations as a useful tool to provide information on seasonal and geographic patterns of distribution of calling whales, particularly endangered species such as the blue whale. This approach is particularly relevant in area where visual observations are limited (in the Southern Ocean for instance).

I am also particularly interested in the evolution of the frequency (i.e. pitch) of blue whale calls across time.

Through a multidisciplinary approach combining biology, oceanography and signal treatment, it is possible to increase our knowledge on whale acoustic behaviour and ecology, and ultimately interactions with their marine environment. 


In the News:

The Atlantic - Whale Songs Are Getting Deeper

Jezebel -Whales are plotting something

Le Monde - Pourquoi le chant des baleines bleues devient-il de plus en plus grave ?

The New York Times - These Whales Are Serenaders of the Seas. It’s Quite a Racket.

Time For Kids - Changing tunes


Journal articles
Samaran F; Berne A; Leroy EC; Moreira S; Stafford KM; Maia M; Royer J-Y, 2019, 'Antarctic blue whales (Balaenoptera musculus intermedia) recorded at the Equator in the Atlantic Ocean', MARINE MAMMAL SCIENCE, vol. 35, pp. 641 - 648, http://dx.doi.org/10.1111/mms.12559
Dreo R; Bouffaut L; Leroy E; Barruol G; Samaran F, 2019, 'Baleen whale distribution and seasonal occurrence revealed by an ocean bottom seismometer network in the Western Indian Ocean', DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY, vol. 161, pp. 132 - 144, http://dx.doi.org/10.1016/j.dsr2.2018.04.005
Leroy EC; Thomisch K; Royer J-Y; Boebel O; Van Opzeeland I, 2018, 'On the reliability of acoustic annotations and automatic detections of Antarctic blue whale calls under different acoustic conditions', JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, vol. 144, pp. 740 - 754, http://dx.doi.org/10.1121/1.5049803
Leroy EC; Royer JY; Bonnel J; Samaran F, 2018, 'Long-Term and Seasonal Changes of Large Whale Call Frequency in the Southern Indian Ocean', Journal of Geophysical Research: Oceans, vol. 123, pp. 8568 - 8580, http://dx.doi.org/10.1029/2018JC014352
Leroy EC; Samaran F; Stafford KM; Bonnel J; Royer J-Y, 2018, 'Broad-scale study of the seasonal and geographic occurrence of blue and fin whales in the Southern Indian Ocean', ENDANGERED SPECIES RESEARCH, vol. 37, pp. 289 - 300, http://dx.doi.org/10.3354/esr00927
Leroy EC; Thomisch K; Van Opzeeland I, 2017, 'Variability in ground-truth data sets and the performance of two automated detectors for Antarctic blue whale calls in different soundscape conditions', The Journal of the Acoustical Society of America, vol. 141, pp. 3604 - 3605, http://dx.doi.org/10.1121/1.4987713
Leroy EC; Samaran F; Bonnel J; Royer J-Y, 2017, 'Identification of two potential whale calls in the southern Indian Ocean, and their geographic and seasonal occurrence', JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, vol. 142, pp. 1413 - 1427, http://dx.doi.org/10.1121/1.5001056
Leroy EC; Samaran F; Bonnel J; Royer J-Y, 2016, 'Seasonal and Diel Vocalization Patterns of Antarctic Blue Whale (Balaenoptera musculus intermedia) in the Southern Indian Ocean: A Multi-Year and Multi-Site Study', PLOS ONE, vol. 11, http://dx.doi.org/10.1371/journal.pone.0163587
Tsang-Hin-Sun E; Royer J-Y; Leroy EC, 2015, 'Low-frequency sound level in the Southern Indian Ocean', JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, vol. 138, pp. 3439 - 3446, http://dx.doi.org/10.1121/1.4936855
Socheleau F-X; Leroy E; Carvallo Pecci A; Samaran F; Bonnel J; Royer J-Y, 2015, 'Automated detection of Antarctic blue whale calls', The Journal of the Acoustical Society of America, vol. 138, pp. 3105 - 3117, http://dx.doi.org/10.1121/1.4934271