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Gear-independent patterns of variation in catch of juvenile Atlantic cod (Gadus morhua) in coastal habitats
| Content Provider | Semantic Scholar |
|---|---|
| Author | Methven, David Alan Schneider, David C. |
| Copyright Year | 1998 |
| Abstract | Habitat and size of juvenile Atlantic cod (Gadus morhua) change substantially during the first 3 years after settlement, and hence, cohort size cannot be followed using a single gear. We investigated whether catch could be calibrated across gear types by deploying pairs of gears repeatedly in the same habitat. As expected, size selectivity differed substantially among gears. Trawls and seines generally collected individuals 150 mm. Size modes, corresponding to age-classes, were common to catches of most gears. Highest catches were taken by trawls and seines. Gillnet catches were orders of magnitude lower. Standardized catches could not be calibrated across pairs of gears deployed in the same habitat at approximately the same time. However, it was possible to identify spatial depth gradients and diel changes in catch that were independent of gear. Consistent spatial and temporal patterns across gears were interpreted as characteristic of fish populations... |
| Starting Page | 1430 |
| Ending Page | 1442 |
| Page Count | 13 |
| File Format | PDF HTM / HTML |
| DOI | 10.1139/f98-025 |
| Alternate Webpage(s) | http://www.mun.ca/biology/dschneider/Publications/1998MethvenDCS_CJFAS_JuvCodDepth.pdf |
| Alternate Webpage(s) | https://doi.org/10.1139/f98-025 |
| Volume Number | 55 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
