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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, meer

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Beschikbaar in	Auteurs
VLIZ: Open access 263037 [ download pdf ]

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Trefwoorden

ANE, British Isles, Bristol Channel ANE, British Isles, Severn Estuary 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] Bristol Channel [Marine Regions]; Severn Estuary [Marine Regions] Marien/Kust

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Auteurs		Top
Power, M. Attrill, M.J. Thomas, R.M.

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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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