Academic Journal
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: | Diamant R., Testolin A., Shachar I., Galili O., Scheinin A. |
| المساهمون: | Diamant, R., Testolin, A., Shachar, I., Galili, O., Scheinin, A. |
| بيانات النشر: | Nature Research |
| سنة النشر: | 2024 |
| المجموعة: | Padua Research Archive (IRIS - Università degli Studi di Padova) |
| مصطلحات موضوعية: | Dolphin classification, Dolphin whistle, Impact of underwater radiated noise, Signal detection, Whistles clustering |
| الوصف: | 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 in journal/newspaper |
| وصف الملف: | ELETTRONICO |
| اللغة: | English |
| Relation: | info:eu-repo/semantics/altIdentifier/pmid/38480760; info:eu-repo/semantics/altIdentifier/wos/WOS:001185520800063; volume:14; issue:1; journal:SCIENTIFIC REPORTS; https://hdl.handle.net/11577/3524624 |
| DOI: | 10.1038/s41598-024-56654-6 |
| الاتاحة: | https://hdl.handle.net/11577/3524624 https://doi.org/10.1038/s41598-024-56654-6 https://www.nature.com/articles/s41598-024-56654-6 |
| Rights: | info:eu-repo/semantics/openAccess |
| رقم الانضمام: | edsbas.97AA3612 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1038/s41598-024-56654-6 |
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