{"refrec":{"BRefID":195558,"RR":"<b>Schoo, K.L.; Aberle, N.; Malzahn, A.M.; Boersma, M.</b> (2010). Does the nutrient stoichiometry of primary producers affect the secondary consumer <i>Pleurobrachia pileus</i>? <i>Aquat. Ecol. 44(1)</i>: 233-242. <a href=\"http://dx.doi.org/10.1007/s10452-009-9265-4\" target=\"_blank\">http://dx.doi.org/10.1007/s10452-009-9265-4</a>","BEntID":188030,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":null,"RefStringPartII":" <i>Aquat. Ecol. 44(1)</i>: 233-242. <a href=\"https://dx.doi.org/10.1007/s10452-009-9265-4\" target=\"_blank\">https://dx.doi.org/10.1007/s10452-009-9265-4</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Schoo, K.L.; Aberle, N.; Malzahn, A.M.; Boersma, M.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Schoo, K.L. <i>et al.</i>","Englishabstract":"We investigated whether phosphorus limitations of primary producers propagate upwards through the food web, not only to the primary consumer level but also onto the secondary consumers' level. A tri-trophic food chain was used to assess the effects of phosphorus-limited phytoplankton (the cryptophyte Rhodomonas salina) on herbivorous zooplankters (the copepod Acartia tonsa) and finally on zooplanktivores (the ctenophore Pleurobrachia pileus). The algae were cultured in phosphorus-replete and phosphorus-limited media before being fed to two groups of copepods. The copepods in turn were fed to the top predator, P. pileus, in a mixture resulting in a phosphorus-gradient, ranging from copepods having received only phosphorus-replete algae to copepods reared solely on phosphorus-limited algae. The C:P ratio of the algae varied significantly between the two treatments, resulting in higher C:P ratios for those copepods feeding on phosphorus-limited algae, albeit with a significance of 0.07. The differences in the feeding environment of the copepods could be followed to Pleurobrachia pileus. Contrary to our expectations, we found that phosphorus-limited copepods represented a higher quality food source for P. pileus, as shown by the better condition (expressed as nucleic acid content) of the ctenophore. This could possibly be explained by the rather high C:P ratios of ctenophores, their resulting low phosphorus demand and relative insensitivity to P deficiency. This might potentially be an additional explanation for the observed increasing abundances of gelatinous zooplankton in our increasingly phosphorus-limited coastal seas.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Does the nutrient stoichiometry of primary producers affect the secondary consumer <i>Pleurobrachia pileus</i>?","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":"Phosphorus limitation; Ctenophores; Ecological stoichiometry; Marinefood webs; Gelatinous zooplankton; Trophic transfer","OtherDescriptors":null,"Notes":null,"AnaPub":2010,"MonPub":null,"DateUpdate":"2018-02-13","DateCreate":"2010-05-27","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000274707300022","VABBcode":null,"OpenAcc":1,"DOI":"10.1007/s10452-009-9265-4"},"refs":null,"anarec":{"AnaID":195558,"PubliDate":2010,"Pagination":"233-242","XtraPublOfAnaID":null,"ISBN":null,"Volume":"44","Issue":"1","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":42197,"SerRR":"Aquatic Ecology. 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