Utility of 18-khz acoustic data for abundance estimation of atlantic herring (clupea harengus)
| العنوان: | Utility of 18-khz acoustic data for abundance estimation of atlantic herring (clupea harengus) |
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| المؤلفون: | Afra Egan, Ryan A. Saunders, Rolf J. Korneliussen, Dave G. Reid, Sascha M. M. Fässler, Maurice Clarke, Ciaran O'Donnell |
| المصدر: | ICES Journal of Marine Science 69 (2012) 6 ICES Journal of Marine Science, 69(6), 1086-1098 |
| بيانات النشر: | Oxford University Press (OUP), 2012. |
| سنة النشر: | 2012 |
| مصطلحات موضوعية: | 0106 biological sciences, 120-khz backscatter, Stock assessment, acoustic survey, mackerel, Aquatic Science, Visserij, 010603 evolutionary biology, 01 natural sciences, Herring, target-strength, Abundance (ecology), high-frequencies, celtic sea, 14. Life underwater, Target strength, oceanography, stock assessment, Ecology, Evolution, Behavior and Systematics, fish, Abundance estimation, Atlantic herring, Ecology, biology, 010604 marine biology & hydrobiology, swimbladder, Clupea, biology.organism_classification, 18-khz backscatter, Oceanography, Population model, identification, atlantic herring, krill |
| الوصف: | Saunders, R. A., O'Donnell, C., Korneliussen, R. J., Fässler, S. M. M., Clarke, M. W., Egan, A, and Reid, D. 2012. Utility of 18-kHz acoustic data for abundance estimation of Atlantic herring (Clupea harengus) – ICES Journal of Marine Science, 69: 1086–1098. Current acoustic survey protocols for Atlantic herring (Clupea harengus) abundance estimation are principally dependent upon 38-kHz backscatter data. This can constitute a substantial problem for robust stock assessment when 38-kHz data are compromised. Research vessels now typically collect multifrequency data during acoustic surveys, which could be used to remediate such situations. Here, we investigate the utility of using 18- and 120-kHz data for herring abundance estimation when the standard 38-kHz approach is not possible. Estimates of herring abundance/biomass in the Celtic Sea (2007–2010) were calculated at 18, 38, and 120 kHz using the standard 38-kHz target-strength (TS) model and geometrically equivalent TS models at 18 and 120 kHz. These estimates were compared to assess the level of coherence between the three frequencies, and 18-kHz-derived estimates were subsequently input into standard 38-kHz-based population models to evaluate the impact on the assessment. Results showed that estimates of herring abundance/biomass from 18 and 38 kHz acoustic integration varied by only 0.3–5.4%, and acoustically derived numbers-at-age estimates were not significantly (p > 0.05) different from 1:1. Estimates at 120 kHz were also robust. Furthermore, 18-kHz-derived estimates did not significantly change the assessment model output, indicating that 18-kHz data can be used for herring stock assessment purposes. |
| وصف الملف: | application/pdf; application/octet-stream |
| تدمد: | 1054-3139 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b3a7a7bdb0f9bceff6240afb1c0236c5 http://hdl.handle.net/10379/13799 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....b3a7a7bdb0f9bceff6240afb1c0236c5 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 10543139 |
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