Instantaneous areal population density of entire Atlantic cod and herring spawning groups and group size distribution relative to total spawning population
The wide-area group behaviour of spawning Atlantic cod and herring is investigated. By a combination of Ocean Acoustic Waveguide Remote Sensing (OAWRS) and conventional sensing methods, first-look images of the instantaneous population density are obtained of entire Atlantic cod spawning groups, str...
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| Format: | Article |
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Wiley Blackwell
2019
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| Online Access: | http://hdl.handle.net/1721.1/119848 https://orcid.org/0000-0003-4369-296X https://orcid.org/0000-0002-0261-4482 https://orcid.org/0000-0003-4926-2792 |
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| author | Godø, Olav Rune Macaulay, Gavin J. Jech, Josef Michael Ratilal, Purnima Makris, Nicholas Yi, Dong Hoon Jain, Ankita Deepak Cho, Byung Gu Gong, Zheng |
| author2 | Massachusetts Institute of Technology. Department of Mechanical Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Mechanical Engineering Godø, Olav Rune Macaulay, Gavin J. Jech, Josef Michael Ratilal, Purnima Makris, Nicholas Yi, Dong Hoon Jain, Ankita Deepak Cho, Byung Gu Gong, Zheng |
| author_sort | Godø, Olav Rune |
| collection | MIT |
| description | The wide-area group behaviour of spawning Atlantic cod and herring is investigated. By a combination of Ocean Acoustic Waveguide Remote Sensing (OAWRS) and conventional sensing methods, first-look images of the instantaneous population density are obtained of entire Atlantic cod spawning groups, stretching for tens of kilometres in the Nordic Seas. This structural information made it possible to quantify the spawning group size distribution of cod over a roughly 30-year period from conventional line-transect data acquired annually by vertical echo sounding in the Nordic Seas. The size distribution is found to be consistent with the log-normal probability density often found in growth processes that depend on many independent parameters. Nordic Seas cod populations are found to distribute into many vast behavioural groups during spawning with relatively stable mean size despite larger variations in total annual population. When sustained at pre-industrial levels, the total spawning population is found to greatly exceed the mean spawning group size. As an apparent consequence of this large differential, when the total population, or overall scale, declined to within a standard deviation of this mean cod spawning group quantum, or inner-group-behavioural scale, return to pre-industrial levels required decades. Findings for Atlantic herring are similar, where summing the spawning group populations measured in a single instantaneous OAWRS image per day over the 8-day peak spawning period enabled accurate enumeration of the entire Georges Bank herring spawning population to within 7% of the independent NOAA estimate for 2006. These results may be relevant to other oceanic fish. |
| first_indexed | 2024-09-23T13:57:45Z |
| format | Article |
| id | mit-1721.1/119848 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T13:57:45Z |
| publishDate | 2019 |
| publisher | Wiley Blackwell |
| record_format | dspace |
| spelling | mit-1721.1/1198482022-09-28T17:24:59Z Instantaneous areal population density of entire Atlantic cod and herring spawning groups and group size distribution relative to total spawning population Godø, Olav Rune Macaulay, Gavin J. Jech, Josef Michael Ratilal, Purnima Makris, Nicholas Yi, Dong Hoon Jain, Ankita Deepak Cho, Byung Gu Gong, Zheng Massachusetts Institute of Technology. Department of Mechanical Engineering Makris, Nicholas Yi, Dong Hoon Jain, Ankita Deepak Cho, Byung Gu Gong, Zheng The wide-area group behaviour of spawning Atlantic cod and herring is investigated. By a combination of Ocean Acoustic Waveguide Remote Sensing (OAWRS) and conventional sensing methods, first-look images of the instantaneous population density are obtained of entire Atlantic cod spawning groups, stretching for tens of kilometres in the Nordic Seas. This structural information made it possible to quantify the spawning group size distribution of cod over a roughly 30-year period from conventional line-transect data acquired annually by vertical echo sounding in the Nordic Seas. The size distribution is found to be consistent with the log-normal probability density often found in growth processes that depend on many independent parameters. Nordic Seas cod populations are found to distribute into many vast behavioural groups during spawning with relatively stable mean size despite larger variations in total annual population. When sustained at pre-industrial levels, the total spawning population is found to greatly exceed the mean spawning group size. As an apparent consequence of this large differential, when the total population, or overall scale, declined to within a standard deviation of this mean cod spawning group quantum, or inner-group-behavioural scale, return to pre-industrial levels required decades. Findings for Atlantic herring are similar, where summing the spawning group populations measured in a single instantaneous OAWRS image per day over the 8-day peak spawning period enabled accurate enumeration of the entire Georges Bank herring spawning population to within 7% of the independent NOAA estimate for 2006. These results may be relevant to other oceanic fish. United States. Office of Naval Research National Science Foundation (U.S.) Norwegian Institute of Marine Research 2019-01-04T14:53:58Z 2019-01-04T14:53:58Z 2018-11 2018-03 2018-12-13T16:20:31Z Article http://purl.org/eprint/type/JournalArticle 1467-2960 http://hdl.handle.net/1721.1/119848 Makris, Nicholas C. et al. “Instantaneous Areal Population Density of Entire Atlantic Cod and Herring Spawning Groups and Group Size Distribution Relative to Total Spawning Population.” Fish and Fisheries (November 5, 2018). © 2018 The Authors https://orcid.org/0000-0003-4369-296X https://orcid.org/0000-0002-0261-4482 https://orcid.org/0000-0003-4926-2792 http://dx.doi.org/10.1111/faf.12331 Fish and Fisheries Creative Commons Attribution 4.0 International License http://creativecommons.org/licenses/by/4.0/ application/pdf Wiley Blackwell Wiley |
| spellingShingle | Godø, Olav Rune Macaulay, Gavin J. Jech, Josef Michael Ratilal, Purnima Makris, Nicholas Yi, Dong Hoon Jain, Ankita Deepak Cho, Byung Gu Gong, Zheng Instantaneous areal population density of entire Atlantic cod and herring spawning groups and group size distribution relative to total spawning population |
| title | Instantaneous areal population density of entire Atlantic cod and herring spawning groups and group size distribution relative to total spawning population |
| title_full | Instantaneous areal population density of entire Atlantic cod and herring spawning groups and group size distribution relative to total spawning population |
| title_fullStr | Instantaneous areal population density of entire Atlantic cod and herring spawning groups and group size distribution relative to total spawning population |
| title_full_unstemmed | Instantaneous areal population density of entire Atlantic cod and herring spawning groups and group size distribution relative to total spawning population |
| title_short | Instantaneous areal population density of entire Atlantic cod and herring spawning groups and group size distribution relative to total spawning population |
| title_sort | instantaneous areal population density of entire atlantic cod and herring spawning groups and group size distribution relative to total spawning population |
| url | http://hdl.handle.net/1721.1/119848 https://orcid.org/0000-0003-4369-296X https://orcid.org/0000-0002-0261-4482 https://orcid.org/0000-0003-4926-2792 |
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