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one publication added to basket [2762]
Biomass transport to and from an upper estuarine area by migration of juvenile Atlantic herring Clupea harengus
Maes, J.; Ollevier, F. (2000). Biomass transport to and from an upper estuarine area by migration of juvenile Atlantic herring Clupea harengus. Can. J. Fish. Aquat. Sci. 57(7): 1404-1409. dx.doi.org/10.1139/cjfas-57-7-1404
In: Canadian Journal of Fisheries and Aquatic Sciences = Journal canadien des sciences halieutiques et aquatiques. National Research Council Canada: Ottawa. ISSN 0706-652X; e-ISSN 1205-7533
Peer reviewed article  

Available in  Authors 

Keywords
    Abundance
    Behaviour > Migrations
    Developmental stages > Juveniles
    Models > Mathematical models
    Population characteristics > Biomass
    Population functions > Mortality
    Clupea harengus Linnaeus, 1758 [WoRMS]
    Belgium, Zeeschelde [Marine Regions]
    Marine/Coastal; Brackish water

Authors  Top 
  • Maes, J.
  • Ollevier, F.

Abstract
    A model describing fish abundance resulting from fish migration and mortality in an upper estuary is presented. This model can be used to estimate biomass transports by fish migrations between estuary and sea and to assess production assimilated in the estuary. It was applied to herring Clupea harengus L., a marine species with 0+ juveniles that migrate during winter to temperate European estuaries. It was shown that different mortality regimes greatly affected the number of fish that eventually emigrated and, hence, the biomass that was exported during the seaward migration. The difference between imported and exported biomass was assessed under different growth conditions and varied from positive to negative as mortality rates increased. The discrepancy between export of biomass and in situ produced biomass showed that fish production was not necessarily transported to the sea when emigrating. It was tentatively concluded that export of biomass out of the estuary only occurs if populations move seaward before winter.

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