Catchability Variations of Cod in the Marginal Ice Zone
- 1 September 1990
- journal article
- research article
- Published by Canadian Science Publishing in Canadian Journal of Fisheries and Aquatic Sciences
- Vol. 47 (9) , 1678-1683
- https://doi.org/10.1139/f90-192
Abstract
An analysis of results obtained during the winter groundfish surveys in the Gulf of St. Lawrence since 1978 was undertaken by relating the cod (Gadus morhua) catch to the distance from ice edge while taking temperature and depth variables into account. This analysis was prompted by anecdotal accounts and recently published data on increased abundance of many taxa related to an upwelling phenomenon in the marginal ice zone. Results indicate that large catches of cod occur in the marginal ice zone when depths are suitable. It is hypothesized that a strong thermal gradient close to the bottom would increase the concentration of cod and thus its catchability.This publication has 4 references indexed in Scilit:
- Atmosphere–Ocean Coupling and Atlantic Cod Migrations: Effect of Wind-Forced Variations in Sea Temperatures and Currents or Nearshore Distributions and Catch Rates of Gadus morhuaCanadian Journal of Fisheries and Aquatic Sciences, 1988
- Coastal Upwelling and Oikopleura Occurrence ("Slub"): A Model and Potential Application to Inshore FisheriesCanadian Journal of Fisheries and Aquatic Sciences, 1987
- Biological observations in the marginal ice zone of the East Greenland SeaJournal of Marine Research, 1985
- Partitioning ordered variables into discrete states for discriminant analysis of ecological classificationsCanadian Journal of Zoology, 1983