{"refrec":{"BRefID":73468,"RR":"<b>Hummel, H.; Moerland, G.; Bakker, C.</b> (1988). The concomitant existence of a typical coastal and a detritus food chain in the Westerschelde estuary. <i>Hydrobiol. Bull. 22(1)</i>: 35-41. <a href=\"https://dx.doi.org/10.1007/BF02256780\" target=\"_blank\">https://dx.doi.org/10.1007/BF02256780</a>","BEntID":11146,"PublicFlag":1,"CheckedFlag":0,"wosflag":0,"vabbflag":0,"RefStringPartII":". <i>Hydrobiol. Bull. 22(1)</i>: 35-41. <a href=\"https://dx.doi.org/10.1007/BF02256780\" target=\"_blank\">https://dx.doi.org/10.1007/BF02256780</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Hummel, H.; Moerland, G.; Bakker, C.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Hummel, H. <i>et al.</i>","Englishabstract":"Clear gradients could be found from the river to the sea for the abiotic as well as for the biotic features of the Westerschelde estuary. Two food chains were distinguished; a mainly detritus-based food chain in the upstream brackish part and a coastal food chain downstream. The centre of the area of the detritus food chain coincided with the zone of a turbidity maximum at the interface of salt and fresh water. This food chain is characterized by a low primary production but a year-round high concentration of suspended organic matter, aggregates of detritus and bacteria. The zooplankton and zoobenthos can reach high biomasses. The coastal food chain is mainly based on a seasonally changing high primary production. 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