{"refrec":{"BRefID":120532,"RR":"<b>Guelinckx, J.; Geysen, B.; De Brabandere, L.; Dehairs, F.A.; Ollevier, F.P.</b> (2008). Spatial variability in d<sup>13</sup>C and d<sup>15</sup>N of estuarine and coastal benthic consumers derived from sand goby gut contents and muscle tissue, <b><i>in</i></b>: Guelinckx, J. <i>Estuarine habitat use by a goby species: a geochemical approach = Estuarien habitatgebruik door een grondelsoort: een geochemische benadering.</i> pp. 33-45","BEntID":114685,"PublicFlag":1,"CheckedFlag":0,"wosflag":null,"vabbflag":null,"RefStringPartII":", <b><i>in</i></b>: Guelinckx, J. <i>Estuarine habitat use by a goby species: a geochemical approach = Estuarien habitatgebruik door een grondelsoort: een geochemische benadering.</i> pp. 33-45","DocTypID":17,"DocType":"Book chapters","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Guelinckx, J.; Geysen, B.; De Brabandere, L.; Dehairs, F.A.; Ollevier, F.P.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Guelinckx, J. <i>et al.</i>","Englishabstract":"A prerequisite to trace animal movements between two areas using stable isotopes is that food sources of the species under study are isotopically different between both areas. Additionally, for clear interpretation, it is important that the migratory source population is relatively homogeneous in isotopic composition. This preliminary study examined both conditions with the prospect of investigating sand goby <i>Pomatoschistus minutus</i> (Pallas, 1770) immigration patterns from the North Sea to the upper Scheldt estuary (Belgium and The Netherlands) by means of C and N isotopes (δ<sup>13</sup>C and δ<sup>15</sup>N). Stable isotope analyses on monthly gut contents (June 2003 - March 2004) demonstrated that the δ<sup>13</sup>C value of sand goby prey items was on average 6 ‰ higher in the lower estuary than in the upper estuary. From June until November, δ<sup>15</sup>N was higher in the upper estuary than in the lower estuary, but this pattern reversed during winter and early spring. Sand goby muscle tissue showed no spatial δ<sup>13</sup>C variability along the Belgian coast, but our data revealed that coastal δ<sup>13</sup>C values were depleted relative to those offshore. Coastal δ<sup>15</sup>N values, on the other hand, increased considerably with increasing distance from the estuary during summer and autumn, but an inshore-offshore δ<sup>15</sup>N gradient was not detected. In contrast to δ<sup>13</sup>C, δ<sup>15</sup>N is not an appropriate tracer to study fish migration into the Scheldt estuary due to the alternating δ<sup>15</sup>N gradient in the estuary and the spatial heterogeneity of δ<sup>15</sup>N along the Belgian coast.","AbstractOtherLang":null,"BibLvlCode":"AM","StandardTitle":"Spatial variability in d<sup>13</sup>C and d<sup>15</sup>N of estuarine and coastal benthic consumers derived from sand goby gut contents and muscle tissue","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2024-12-10 01:33:17.368041","timezone_type":1,"timezone":"+01:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":2008,"MonPub":null,"DateUpdate":"2008-04-16","DateCreate":"2008-03-06","SecASFANote":null,"ConfID":null,"PeerRev":null,"VlizCoreFlag":1,"WoScode":null,"VABBcode":null,"OpenAcc":0},"refs":null,"anarec":{"AnaID":120532,"PubliDate":2008,"Pagination":"33-45","XtraPublOfAnaID":null,"ISBN":"978-90-8649-165-0","Volume":null,"Issue":null,"BRefMon":120527,"BRefMonRR":"<b>Guelinckx, J.</b> (2008). Estuarine habitat use by a goby species: a geochemical approach = Estuarien habitatgebruik door een grondelsoort: een geochemische benadering. PhD Thesis. Katholieke Universiteit Leuven, Laboratorium voor Aquatische Ecologie: Leuven. 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