An update of the status of the witch flounder resource in NAFO divisions 2J, 3K and 3L / by W.R. Bowering.: Fs70-8/87-33E-PDF
"Catches of witch flounder in Div. 2J, 3K and 3L peaked at about 24,000 t in 1973, declined almost steadily to 1980 at about 3500 t, and remained stable to 1985. The 1986 catch of 1300 t is the lowest reported catch in more than 20 years. A biomass estimate for 1986 for the three divisions combined as determined from fall surveys indicates a minimum trawlable biomass of 25,000 t which is low compared to recent years. Age compositions from both research and commercial samples indicate a stable age structure in recent years at low levels of fishing pressure and despite this the age span has not increased. Long-term estimates of mortality suggest that fishing mortality in the late 1970's was probably 2-3 times the F0.1 level of 0.30"--Abstract, page 2.
Permanent link to this Catalogue record:
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| Title | An update of the status of the witch flounder resource in NAFO divisions 2J, 3K and 3L / by W.R. Bowering. |
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| Publication type | Monograph - View Master Record |
| Language | [English] |
| Format | Digital text |
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| Description | 1 online resource (17 pages) : graphs. |
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