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Temporal abundance patterns and growth of juvenile herring and sprat from the Thames estuary 1977-1992
Power, M.; Attrill, M.J.; Thomas, R.M. (2000). Temporal abundance patterns and growth of juvenile herring and sprat from the Thames estuary 1977-1992. J. Fish Biol. 56: 1408-1426
In: Journal of Fish Biology. Fisheries Society of the British Isles: London,New York,. ISSN 0022-1112; e-ISSN 1095-8649, more
Peer reviewed article  
Available in  Authors 
Keywords
    Characteristics > Trends
    Community
    Developmental stages > Juveniles
    Dimensions > Size
    Populations
    Populations
    Properties > Physical properties > Thermodynamic properties > Temperature
    Trends
    Water bodies > Coastal waters > Coastal landforms > Coastal inlets > Estuaries
    Clupeidae Cuvier, 1816 [WoRMS]
    ANE, British Isles, Bristol Channel [Marine Regions]; ANE, British Isles, Severn Estuary [Marine Regions]
    Marine/Coastal
Authors  Top 
  • Power, M.
  • Attrill, M.J., more
  • Thomas, R.M.
Abstract
    Most herring Clupea harengus and sprat Sprattus sprattus sampled from West Thurrock power station intake screens, middle Thames estuary, between 1977 and 1992 were age-0 and followed regular patterns of seasonal occurrence. Juvenile herring entered the estuary in July, peaked in abundance November to March, and then declined. Juvenile sprat first appeared in September and peaked in abundance in January. Neither species was abundant in summer samples. While in the estuary, herring and sprat increased in length an average of 4.0 and 0.33 cm respectively. Abundance of both species was significantly affected by temperature, temporal trend, shoaling behaviour and seasonal variables, and of herring by suspended solids, interactions between environmental variates did not influence the abundance of either species. As estuarine clupeids were influenced by a complex set of events within and outside the estuary, estuarine monitoring studies alone will not be sufficient for understanding the changes in estuarine fish communities resulting from future human activity.
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