{"refrec":{"BRefID":99002,"RR":"<b>Prahl, F.G.; Small, L.F.; Eversmeyer, B.</b> (1997). Biogeochemical characterization of suspended particulate matter in the Columbia River estuary. <i>Mar. Ecol. Prog. Ser. 160</i>: 173-184","BEntID":94269,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>Mar. Ecol. Prog. 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The ETM was a trap for organic matter during all 3 seasons, which can explain the intense microbial activity and microcrustacean grazing observed previously. The organic matter was particularly rich in chlorophyll a in late spring to early summer. The source of this seasonal enrichment was mainly riverine phytoplankton. The organic matter contribution to ETM from the ocean was minor compared to the river, but apparently not negligible. Despite large seasonal variations in chlorophyll content, the delta<sup>13</sup>C of POC concentrated in ETM remained nearly constant between -26 and -25.5 ppt. Vascular plant debris, as depicted by lignin phenol content, always comprised a minor fraction of the organic matter in ETM, although ETM had higher lignin levels than the OM of surrounding waters. Intertidal mudflats are if not an additional source of organic matter at least an important site for transforming riverine organic matter that is ultimately concentrated in ETM.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Biogeochemical characterization of suspended particulate matter in the Columbia River estuary","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2025-07-02 08:33:14.980000","timezone_type":1,"timezone":"+00:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":1997,"MonPub":null,"DateUpdate":"2006-05-19","DateCreate":"2006-05-19","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000071722800016","VABBcode":null,"OpenAcc":0},"refs":null,"anarec":{"AnaID":99002,"PubliDate":1997,"Pagination":"173-184","XtraPublOfAnaID":null,"ISBN":null,"Volume":"160","Issue":null,"BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":43354,"SerRR":"Marine Ecology Progress Series. 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