دورية أكاديمية
Observational study on the non-linear response of dolphins to the presence of vessels
| العنوان: | Observational study on the non-linear response of dolphins to the presence of vessels |
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| المؤلفون: | Roee Diamant, Alberto Testolin, Ilan Shachar, Ori Galili, Aviad Scheinin |
| المصدر: | Scientific Reports, Vol 14, Iss 1, Pp 1-14 (2024) |
| بيانات النشر: | Nature Portfolio, 2024. |
| سنة النشر: | 2024 |
| المجموعة: | LCC:Medicine LCC:Science |
| مصطلحات موضوعية: | Impact of underwater radiated noise, Dolphin whistles, Dolphin classification, Signal detection, Whistles clustering, Medicine, Science |
| الوصف: | Abstract With the large increase in human marine activity, our seas have become populated with vessels that can be overheard from distances of even 20 km. Prior investigations showed that such a dense presence of vessels impacts the behaviour of marine animals, and in particular dolphins. While previous explorations were based on a linear observation for changes in the features of dolphin whistles, in this work we examine non-linear responses of bottlenose dolphins (Tursiops Truncatus) to the presence of vessels. We explored the response of dolphins to vessels by continuously recording acoustic data using two long-term acoustic recorders deployed near a shipping lane and a dolphin habitat in Eilat, Israel. Using deep learning methods we detected a large number of 50,000 whistles, which were clustered to associate whistle traces and to characterize their features to discriminate vocalizations of dolphins: both structure and quantities. Using a non-linear classifier, the whistles were categorized into two classes representing the presence or absence of a nearby vessel. Although our database does not show linear observable change in the features of the whistles, we obtained true positive and true negative rates exceeding 90% accuracy on separate, left-out test sets. We argue that this success in classification serves as a statistical proof for a non-linear response of dolphins to the presence of vessels. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2045-2322 |
| Relation: | https://doaj.org/toc/2045-2322 |
| DOI: | 10.1038/s41598-024-56654-6 |
| URL الوصول: | https://doaj.org/article/d909d4ff4ab04940986a83b48cfeb9b4 |
| رقم الأكسشن: | edsdoj.909d4ff4ab04940986a83b48cfeb9b4 |
| قاعدة البيانات: | Directory of Open Access Journals |
Find this article in full text from Springer Verlag. 
Full Text Finder | تدمد: | 20452322 |
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| DOI: | 10.1038/s41598-024-56654-6 |