Small-Scale Spatiotemporal Pattern in the Spawning of Pacific Herring (<i>Clupea pallasii</i>) in the Jinhae Bay, Korea, Estimated Using Hydroacoustic Survey
Acoustic surveys were used to locate coastal Pacific herring (<i>Clupea pallasii</i>) spawning grounds, and the spatial and temporal patterns of their spawning in Jinhae Bay, Korea were examined. We deployed mooring with a newly designed autonomous echosounder for ~70 days during the Pac...
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MDPI AG
2021-02-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/11/5/2058 |
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| author | Hyungbeen Lee Jung Hwa Choi Seong Yong Moon Kyounghoon Lee Wooseok Oh Yang Jae Im Kangseok Hwang Doo Nam Kim |
| author_facet | Hyungbeen Lee Jung Hwa Choi Seong Yong Moon Kyounghoon Lee Wooseok Oh Yang Jae Im Kangseok Hwang Doo Nam Kim |
| author_sort | Hyungbeen Lee |
| collection | DOAJ |
| description | Acoustic surveys were used to locate coastal Pacific herring (<i>Clupea pallasii</i>) spawning grounds, and the spatial and temporal patterns of their spawning in Jinhae Bay, Korea were examined. We deployed mooring with a newly designed autonomous echosounder for ~70 days during the Pacific herring spawning season in Jinhae Bay, from January to April 2018. At the same time, ship-based acoustic surveys were conducted to identify the spatial distribution twice, at 38 and 120 kHz, onboard the fishing vessel in January and April 2018 in the bay. Fish school signals, including those from adult Pacific herring, are often detected through ship-based acoustic surveys in January, from outside the bay. In the spring, weak scattering signals from fish larvae and zooplankton were continuously detected inside the bay. Backscatter at the mooring in the center of Jinhae Bay was low from mid-January to early March, gradually increasing to higher levels until the end of March. The backscatter observed from the mooring correlated well with ship-based acoustic surveys in the center of the bay. This study proposes that the mooring type acoustic echosounder is a valuable tool for temporal abundance information and other aspects of fish behavior. |
| first_indexed | 2024-03-09T00:32:46Z |
| format | Article |
| id | doaj.art-b3ae8a5fcd3a40b1a615b523224e0c59 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-09T00:32:46Z |
| publishDate | 2021-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-b3ae8a5fcd3a40b1a615b523224e0c592023-12-11T18:25:53ZengMDPI AGApplied Sciences2076-34172021-02-01115205810.3390/app11052058Small-Scale Spatiotemporal Pattern in the Spawning of Pacific Herring (<i>Clupea pallasii</i>) in the Jinhae Bay, Korea, Estimated Using Hydroacoustic SurveyHyungbeen Lee0Jung Hwa Choi1Seong Yong Moon2Kyounghoon Lee3Wooseok Oh4Yang Jae Im5Kangseok Hwang6Doo Nam Kim7Fisheries Resources Research Center, National Institute of Fisheries Science (NIFS), Tongyeong 53085, KoreaJeju Fisheries Research Institute, National Institute of Fisheries Science (NIFS), Jeju 63038, KoreaSouth Sea Fisheries Research Institute, National Institute of Fisheries Science (NIFS), Yeosu 59780, KoreaDivision of Marine Technology, Chonnam National University, Yeosu 59626, KoreaDivision of Marine Technology, Chonnam National University, Yeosu 59626, KoreaDistant Water Fisheries Resources Division, National Institute of Fisheries Science (NIFS), Busan 46083, KoreaFisheries Resources Research Center, National Institute of Fisheries Science (NIFS), Tongyeong 53085, KoreaFisheries Resources Research Center, National Institute of Fisheries Science (NIFS), Tongyeong 53085, KoreaAcoustic surveys were used to locate coastal Pacific herring (<i>Clupea pallasii</i>) spawning grounds, and the spatial and temporal patterns of their spawning in Jinhae Bay, Korea were examined. We deployed mooring with a newly designed autonomous echosounder for ~70 days during the Pacific herring spawning season in Jinhae Bay, from January to April 2018. At the same time, ship-based acoustic surveys were conducted to identify the spatial distribution twice, at 38 and 120 kHz, onboard the fishing vessel in January and April 2018 in the bay. Fish school signals, including those from adult Pacific herring, are often detected through ship-based acoustic surveys in January, from outside the bay. In the spring, weak scattering signals from fish larvae and zooplankton were continuously detected inside the bay. Backscatter at the mooring in the center of Jinhae Bay was low from mid-January to early March, gradually increasing to higher levels until the end of March. The backscatter observed from the mooring correlated well with ship-based acoustic surveys in the center of the bay. This study proposes that the mooring type acoustic echosounder is a valuable tool for temporal abundance information and other aspects of fish behavior.https://www.mdpi.com/2076-3417/11/5/2058hydroacoustic surveyJinhae Bay<i>Clupea pallasii</i>spawning groundsspatiotemporal distribution |
| spellingShingle | Hyungbeen Lee Jung Hwa Choi Seong Yong Moon Kyounghoon Lee Wooseok Oh Yang Jae Im Kangseok Hwang Doo Nam Kim Small-Scale Spatiotemporal Pattern in the Spawning of Pacific Herring (<i>Clupea pallasii</i>) in the Jinhae Bay, Korea, Estimated Using Hydroacoustic Survey Applied Sciences hydroacoustic survey Jinhae Bay <i>Clupea pallasii</i> spawning grounds spatiotemporal distribution |
| title | Small-Scale Spatiotemporal Pattern in the Spawning of Pacific Herring (<i>Clupea pallasii</i>) in the Jinhae Bay, Korea, Estimated Using Hydroacoustic Survey |
| title_full | Small-Scale Spatiotemporal Pattern in the Spawning of Pacific Herring (<i>Clupea pallasii</i>) in the Jinhae Bay, Korea, Estimated Using Hydroacoustic Survey |
| title_fullStr | Small-Scale Spatiotemporal Pattern in the Spawning of Pacific Herring (<i>Clupea pallasii</i>) in the Jinhae Bay, Korea, Estimated Using Hydroacoustic Survey |
| title_full_unstemmed | Small-Scale Spatiotemporal Pattern in the Spawning of Pacific Herring (<i>Clupea pallasii</i>) in the Jinhae Bay, Korea, Estimated Using Hydroacoustic Survey |
| title_short | Small-Scale Spatiotemporal Pattern in the Spawning of Pacific Herring (<i>Clupea pallasii</i>) in the Jinhae Bay, Korea, Estimated Using Hydroacoustic Survey |
| title_sort | small scale spatiotemporal pattern in the spawning of pacific herring i clupea pallasii i in the jinhae bay korea estimated using hydroacoustic survey |
| topic | hydroacoustic survey Jinhae Bay <i>Clupea pallasii</i> spawning grounds spatiotemporal distribution |
| url | https://www.mdpi.com/2076-3417/11/5/2058 |
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